Journal articles on the topic 'Electric power systems – Quality control'
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1
Garcia-Torres, Felix, Sergio Vazquez, Isabel M. Moreno-Garcia, Aurora Gil-de-Castro, Pedro Roncero-Sanchez, and Antonio Moreno-Munoz. "Microgrids Power Quality Enhancement Using Model Predictive Control." Electronics 10, no. 3 (February 1, 2021): 328. http://dx.doi.org/10.3390/electronics10030328.
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In electric power systems, any deviation with respect to the theoretical sinusoidal waveform is considered to be a disturbance in the power quality of the electrical grid. The deviation can alter any of the parameters of the waveform: frequency, amplitude, and symmetry among phases. Microgrid, as a part of the electric power system, has to contribute providing an adequate current waveform in grid connected-mode, as well as to guarantee similar voltage features than the standard requirement given for public distribution grids under normal exploitation conditions in islanded mode. Adequate power quality supply is necessary for the correct compatibility between all the devices connected to the same grid. In this paper, the power quality of microgrids is managed using a Model Predictive Control (MPC) methodology which regulates the power converters of the microgrids in order to achieve the requirements. The control algorithm is developed for the following microgrids working modes: grid-connected, islanded, and interconnected. The simulation results demonstrate that the proposed methodology improves the transient response in comparison with classical methods in all the working modes, minimizing the harmonic content in the current and the voltage even with the presence of non-balanced and non-harmonic-free three-phase voltage and current systems.
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Savenko, A. E., and P. S. Savenko. "Features of operation of ship electrical power systems with electrical propulsion systems." Power engineering: research, equipment, technology 24, no. 3 (June 14, 2022): 91–100. http://dx.doi.org/10.30724/1998-9903-2022-24-3-91-100.
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THE PURPOSE. Consider the issue of the presence of distortions in the form of sinusoidal voltage and current in autonomous electrical power systems with electrical propulsion systems, built on the principle of the unified electric power system. Compare the results of the study of voltage distortion for electrical power systems with electrical propulsion systems of various structures and give recommendations for their application.METHODS. For research, unified electric power systems with DC electrical propulsion systems on the Yeysk ferry and alternating current on the asymmetric icebreaker Baltika are considered. The possibilities of programming with frequency control of modern drives of rudder propellers with AC motors are analyzed.RESULTS. Oscillograms of voltages and currents of generators were obtained using thyristor converters and inverters to control electrical propulsion systems in various modes. Significant ripples and distortions of the sinusoidal voltage and generator currents were noted when thyristor converters are used to power DC propulsion electric motors. Also, small deviations from the sinusoidal form of the ship's network voltage were recorded when inverters were used to control AC propulsion motors as part of rudder propellers.CONCLUSION. The issue of ensuring the quality of electricity produced in autonomous electrical power systems of sea vessels is of great relevance and importance. To ensure the best results, it is advisable to use azimuthing podded drive with AC electric motors, the rotation speed of which is implemented by inverter frequency converters with a DC link.
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Afanasov, A. M., S. V. Arpul, V. Y. Vasyliev, O. O. Hololobova, and S. M. Holik. "Automated Control Systems for Mutual Loads of Traction Electric Machines." Science and Transport Progress, no. 1(97) (October 17, 2022): 50–58. http://dx.doi.org/10.15802/stp2022/265336.
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Purpose. Testing of electric machines should be as objective as possible and contain reliable information about the quality of manufacture or repair of electric machines. During the tests, the parameters of the total power of the test bench sources, energy efficiency of each test process, the difference in thermal loads of the armature windings and excitation windings change. To perform the full test of the electric machine, it is necessary to equip test benches with systems for automatic control of the process of mutual loading. The analysis of different variants of automatic control systems is performed in the work. Methodology. Theoretical studies of electromagnetic processes using a mathematical model of the system “voltage source – traction motor” were performed. This system allows determining the energy performance of electric machines in the entire range of changes in loads and voltages during the tests. The methods of theoretical research and analytical calculation of electrical circuits, theoretical foundations of electrical engineering, mathematical modelling of electrical and energy processes were used in the analysis. Findings. The analysis of rational variants of functional schemes’ construction of automatic control systems with various quantity of power supplies, automatic control loops, mechanical and electric power converters is performed. Rational functional schemes of automatic control systems for testing various collector electric machines of direct and pulsating current are developed. Originality. Rational variants of construction of test benches with electric and mechanical moment converters taking into account variable processes of loading of electric cars during the test are offered. The analysis of energy efficiency of various variants of construction of test benches for testing electric machines in entire range of change of test loadings and voltage of power supplies in the case of using the automatic control system of mutual loading process is performed. Practical value. The conducted research will allow creating recommendations for the design of automated control systems for test benches in order to improve the technical and economic characteristics, reduce the consumption of electricity consumed for testing.
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Shende, Divya, Prashant Jagtap, and Rutuja Hiware. "Enhanced power quality using unified power flow controller systems." Journal of Physics: Conference Series 2089, no. 1 (November 1, 2021): 012035. http://dx.doi.org/10.1088/1742-6596/2089/1/012035.
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Abstract Electrical system frequently finds and issue due to unstable nature and power quality because of, in relation to great number of nonlinear charges. So, there is need to limit inside of these difficulties and produce fine voltage quality concerns. The Flexible Alternate Flow Transmission Systems (FACTS) are the framework made out of static gear works for the AC transmission of electrical energy. Unified_Power_Flow Controls (UPFC) are the excellent FACTS tools to attach series and shunt together and it could use for framing Power transmission sensitive and active power. Here in the paper, Unified Power Flow Control (UPFC) used to clear the voltage sink and Surge. Unified Control was developed and engineered using amplifiers and rectifiers. The real and reactive modifications in congruous control orientations at the receiver side. Use of Simulink of MATLAB checks quality of energy in the use of Unified Control.
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Afonso, Joao L., Mohamed Tanta, José Gabriel Oliveira Pinto, Luis F. C. Monteiro, Luis Machado, Tiago J. C. Sousa, and Vitor Monteiro. "A Review on Power Electronics Technologies for Power Quality Improvement." Energies 14, no. 24 (December 20, 2021): 8585. http://dx.doi.org/10.3390/en14248585.
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Nowadays, new challenges arise relating to the compensation of power quality problems, where the introduction of innovative solutions based on power electronics is of paramount importance. The evolution from conventional electrical power grids to smart grids requires the use of a large number of power electronics converters, indispensable for the integration of key technologies, such as renewable energies, electric mobility and energy storage systems, which adds importance to power quality issues. Addressing these topics, this paper presents an extensive review on power electronics technologies applied to power quality improvement, highlighting, and explaining the main phenomena associated with the occurrence of power quality problems in smart grids, their cause and effects for different activity sectors, and the main power electronics topologies for each technological solution. More specifically, the paper presents a review and classification of the main power quality problems and the respective context with the standards, a review of power quality problems related to the power production from renewables, the contextualization with solid-state transformers, electric mobility and electrical railway systems, a review of power electronics solutions to compensate the main power quality problems, as well as power electronics solutions to guarantee high levels of power quality. Relevant experimental results and exemplificative developed power electronics prototypes are also presented throughout the paper.
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Su, Chun Lien, and Ruei Hung Weng. "A Novel Control Model for Electric Propulsion Systems in All-Electric Ships." Advanced Materials Research 433-440 (January 2012): 2541–45. http://dx.doi.org/10.4028/www.scientific.net/amr.433-440.2541.
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In recent sea and undersea vehicles, implementation of all-electric ships (e-ships) technologies that employ various types of semiconductor switching devices based power conversion modules has brought revolution. These power converters that are nonlinear loads can produce non-sinusoidal distorted currents and these currents are then delivered and broadcasted through the power network and thus bus voltages are distorted. This effect can be more obvious while large loads fed and controlled through power conversion modules, such as electric propulsion system, operate for different purposes of missions. In order to improve the harmonic distortion due to operation of electric propulsion systems, a novel control model for electric propulsion motors is proposed in this paper. The electric motor drivers are controlled through three inverter triggering signals including pulse width modulation (PWM), Quasi-Six Step, and Six-Step for different ship navigation scenarios. Simulation results of application of the proposed model to a practical ship with electric propulsion system are presented. Test results have demonstrated that with the proposed model the harmonic distortions produced by electric propulsion systems under different speed situations can be effectively mitigated and consequently the system supply quality is maintained.
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Babenko, Vladimir Vladimirovich, Ilya Aleksandrovich Haichenko, and Yurij Vasilyevich Nefedov. "FEATURES OF REACTIVE POWER COMPENSATION IN ELECTRIC POWER NETWORKS AND SYSTEMS." National Association of Scientists 1, no. 30(57) (August 10, 2020): 48–52. http://dx.doi.org/10.31618/nas.2413-5291.2020.1.57.264.
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The article considers the conceptual issues of the specifics of optimizing the modes of electric power systems by compensating for reactive power, taking into account the voltage level. Taking into account the level of electric power quality, load change modes, specific cost of the control means and functional tasks, it is determined the algorithmic requirements for the optimization process: according to the criterion of the minimum loss of electric power in the networks and the minimum damage of specific consumers (consumer groups), respectively. The most efficient hardware based on static devices of the FACTS process platform is proposed.
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Sigitov, O. Yu, N. Sh Chemborisova, and I. D. Chernenkov. "Formalized reliability analysis during the electric power systems modes management." E3S Web of Conferences 216 (2020): 01008. http://dx.doi.org/10.1051/e3sconf/202021601008.
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The current problem of the selection of the electric power system control nodes, which can be used to solve multicriterial problems of the consumers reliable supply with the electric power of the necessary quality of maximum efficiency is investigated. At the same time, a new method of making decisions while choosing electric power system control nodes is proposed. It is necessary to take into account a set of different types of indicators which characterize different properties of these nodes.
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Bezbozhnov, Oleg, and Denis Chadaev. "Smart Grid: Monitoring the Quality of Electric Power." NBI Technologies, no. 2 (April 2022): 5–10. http://dx.doi.org/10.15688/nbit.jvolsu.2022.2.1.
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The issues of monitoring the normalized parameters of electricity, in smart grid networks, as a means of ensuring control of the quality of electricity, are considered. In the context of constantly growing consumption of electrical energy, the most important task is its rational distribution and use. State-of-the-art prototypes of intelligent power distribution networks include means of controlling power distribution and consumption processes to ensure that these processes comply with applicable regulations. The purpose of our study is to create a monitoring device for normalized power quality parameters, such as voltage, signal shape, harmonic coefficient, with the possibility of detecting deviations of these parameters from the norm, with the possibility of transmitting the results obtained via infocommunication networks. The developed device allows collecting, analyzing and transmitting data on power quality indicators in the distribution electrical network, with their further use in order to manage energy supply and energy consumption in smart power supply systems, and improve the energy efficiency of power supply systems through the introduction of smart grid technologies. The device can be integrated into energy systems based on the smart grid concept, which are a single energy-information complex, as part of a situation assessment system and emergency automation.
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Tsetskhladze, Merab, and Nata Dzagania. "Optimization of the Control System for the Movement of Electrodes in Electric Furnaces." Works of Georgian Technical University, no. 2(524) (June 6, 2022): 140–45. http://dx.doi.org/10.36073/1512-0996-2022-2-140-145.
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It’s known that the efficient operation of electrical appliances used in production significantly improves the quality and quantity of products. Competent control of technological processes is especially important for such a heavy industry as metallurgical production, where one of the most important issues is the optimal control system for electric motors of moving electrodes, which in turn ensures the required dynamics of arc power control and high productivity. The existing arc power control systems do not fully meet the basic requirements, such as insufficient sensitivity of the regulating parameter, speed and reliability of the electrode movement motor control system. The study of electric motor control systems is an important scientific and technical task in this regard. The optimization of the electric motor control system for moving the electrodes of an electric arc furnace based on the use of logic in control is discussed.
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Milashkina, Olga, and Vadim Zlobin. "Improving quality of ac electric power supply of autonomous power sources using in agriculture." E3S Web of Conferences 193 (2020): 01024. http://dx.doi.org/10.1051/e3sconf/202019301024.
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Autonomous AC electricity supply systems are now widely introduced in agriculture. As the experience of operation of these electricity supply systems has shown, their various properties, determined largely by the type of voltage regulators and sensors used, do not always fully meet the constantly growing requirements for the quality of electricity. Further improvement of voltage regulation systems, and, consequently, the quality of electricity, is associated with the use of technology in them that can implement optimal control laws.
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Xiao, Lei. "Construction Technology and Quality Control of Power and Electrical Engineering Based on Convolutional Neural Network." Security and Communication Networks 2021 (December 17, 2021): 1–15. http://dx.doi.org/10.1155/2021/8964532.
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In the context of the Internet era, more and more parties have begun to store, process, and analyze data, but the accompanying question is whether people are reasonable about the data under the impact of massive data, effective and efficient analysis, especially the problems faced in this project. This article aims to study the quality control problems faced by electric power and electrical engineering in the construction process through the use of convolutional neural networks. Under this idea, this article proposes a multilayer convolution method. The experimental results show that the use of the improved multilayer convolution method for the convolution method of the convolutional neural network can effectively improve the multiple analysis problems of small datasets in the construction of electric power and electrical engineering; in this way, the relevant data are analyzed; by controlling the quality of construction, the quality problem has been greatly improved. After comparison, it is concluded that the overall construction quality has increased by 35%.
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Rabie, Afaf, Abdelhady Ghanem, Sahar S. Kaddah, and Magdi M. El-Saadawi. "Electric vehicles based electric power grid support: a review." International Journal of Power Electronics and Drive Systems (IJPEDS) 14, no. 1 (March 1, 2023): 589. http://dx.doi.org/10.11591/ijpeds.v14.i1.pp589-605.
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<span lang="EN-US">Grid connected electric vehicles (EVs) can provide energy quality services to ease intermittent renewable energy sources dependent, enhance grid stability performance, reliability and load balancing in the power system. Moreover, incorporating sufficient EVs into the power grid will assist reduce greenhouse gases. However, the unrestrained EVs charging impact the raise of peak request, frequency deflection, voltage instability, power quality from the acceptable limits. It can also cause overloading of the power system equipment and an increase in power losses. In this paper, the influences EV technologies on various energy systems, control scheme strategy, benefits, and motivational challenges are investigated. An overview of the impacts of uncontrolled EV loading on the electric power system and how controlled charging becomes benefit impacts is presented. Moreover, a review of the controlled charge and discharge benefits of EVs and the electrical serving involved in reduction of frequency deviation, voltage stability, power quality improvement is introduced. This review shows that integration of optimal control of EVs with a suitable optimization technique can improve and provide on time multi ancillary services of EV integrated with weak grid. In addition, this review provides research tracks which can be followed by researchers.</span>
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BULATOV, Yury N., Andrey V. KRYUKOV, and Edward K. SHUMANSKY. "Application of Asynchronized Generators in Electric Networks with Degraded Electric Power Quality." Elektrichestvo 7, no. 7 (2021): 33–40. http://dx.doi.org/10.24160/0013-5380-2021-7-33-40.
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For decentralized power generation, small-capacity asynchronized generators (AGs) can be used, which are able to yield a number of positive effects in comparison with conventional synchronous machines: higher stability limits, wider reactive power adjustment ranges, simpler synchronization with the grid due to the ability to control the EMF phase, and the possibility to maintain synchronous operation in case of failure in one of the field windings. The article describes the model of a grid equipped with asynchronized generators with automatic excitation and rotor speed control systems, which is developed in the MATLAB software package environment. Normal and emergency operation modes of a 35 kV grid with distributed generation plants based on asynchronized machines under the conditions of degraded electric power quality due to the presence of electric traction loads are simulated. The influence of AGs on emergency and post-emergency modes are determined, and the harmonic distortion levels are estimated. For comparison, the grid operation modes are simulated for the case of using synchronous machines as generation sources. The influence of higher harmonic components on the performance of the proposed automatic control system is analyzed. The obtained study results have shown that with using asynchronized generators, better control processes and better quality of electric power are obtained in comparison with those in a grid equipped with synchronous machines; in addition, the stability limits are increased, and the synchronization processes are simplified.
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Akkilah, Mohammed, and Murtaza Farsadi. "Power Quality Control for Mixed Renewable Energy Systems." Frontier Energy System and Power Engineering 3, no. 1 (January 1, 2021): 1. http://dx.doi.org/10.17977/um049v3i1p1-9.
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Electrical energy is one of the famous and easiest used forms of energy. Electrical energy can be converted to many forms of energy. With the development of technology, the dependency on the electrical energy has been increased greatly nowadays. Such as Computer and telecommunication networks field, railway network banking, post office, life support system are few application that just cannot run without electricity. In this article we will discuss the power quality issues for distributed generation systems based on renewable energy sources, as an example solar and wind energy. A brief explanation about the power quality issues is conducted here.This article starts with the power quality issues, followed by discussions of basic standards. A brief study of power quality in the power system, it includes the systems with dc and renewable sources are done in this article. In addition to the power quality monitoring techniques and its possible solutions for the power quality issues for the power system are briefly discussed. Later we will go through the analyzing step for the methods of mitigation of these problems using custom power devices, such as D-STATCOM, UPQC, UPS, TVSS, DVR, etc., for micro grid systems. As an example for the renewable energy systems, such as the statcom can be an efficient choice due to its several advantages, whereas the spinning reserve can enhance the power quality in traditional systems. Finally, we will discuss the power quality in dc systems. Two Main advantages for a DC system, is the Simple arrangements and higher reliability. Even though it faces many power quality issues such as, instability and poor detection of faults.
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Halilov, E. D. "ON THE SIMULATION OF MODES ОF ELECTRIC POWER SYSTEMS WITH FACTS." ENERGETIKA. Proceedings of CIS higher education institutions and power engineering associations 60, no. 4 (July 7, 2017): 341–51. http://dx.doi.org/10.21122/1029-7448-2017-60-4-341-351.
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Power flow control is an important task of development of electric power systems. It is necessary to reduce the power loss, improve the reliability and quality of power supply and increase the power transmission. Currently, on the basis of modern power electronics effective FАСТS devices for flexible control of power system operation modes have been developed. FАСТS devices are able to simultaneously influence the voltage, the reactance, the angle between the voltages. As it is known, the calculations of the established modes of electric systems are the most frequently performed tasks at all the territorial and time levels of control and planning operations. These calculations are significant by themselves, being also an integral part of software systems of calculation of losses of power and energy in electrical networks, calculation of optimal modes and also sustainability. The need for multiple mode calculation imposes high requirements to the methods of calculation of the established modes in real time in terms of performance and reliability of the results of the solution being obtained under operating conditions of electric power systems. In traditional calculations of the established modes of electrical networks, shunt reactors, current-limiting reactors, capacitor banks, longitudinal compensation devices were accounted in the simulation as passive elements. In regard with the introduction of FACTS devices in power systems, there is an arising need to develop appropriate algorithms and implement them in the form of software for analyzing and controlling the established modes of power systems. The methodology and software for calculation of the established modes of electric networks with consideration of FACTS devices have been developed. The software makes it possible to obtain practically acceptable solutions in three outer iterations. Based on the results of numerical simulation of modes of the power system of the “Azerenergy” JSC it was determined that the application of FACTS devices can significantly increase the transmission line active power, improve voltage levels and reduce losses of active power. The dependences of flows and power losses on the control parameter of FACTS devices have been derived.
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Agunov, A. V., T. S. Titova, and V. A. Kruchek. "On the construction of power quality control systems." Russian Electrical Engineering 87, no. 5 (May 2016): 251–55. http://dx.doi.org/10.3103/s1068371216050023.
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Panpean, Chakrit, Kongpol Areerak, Phonsit Santiprapan, Kongpan Areerak, and Seang Shen Yeoh. "Harmonic Mitigation in Electric Railway Systems Using Improved Model Predictive Control." Energies 14, no. 7 (April 5, 2021): 2012. http://dx.doi.org/10.3390/en14072012.
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An electric multiple unit (EMU) high-speed train is the dynamic load that degrades the power quality in an electric railway system. Therefore, a power quality improvement system using an active power filter (APF) must be considered. Due to the oscillating load current in the dynamic load condition, a fast and accurate harmonic current-tracking performance is required. As such, this paper proposes the design of a model predictive control (MPC) since the minimization of cost function in the MPC process can suitably determine APF switching states. The design technique of MPC is based on the APF mathematical model. This controller was designed to compensate the time delay in the digital control. Moreover, the synchronous detection (SD) method applied the reference current calculations, as shown in this paper. To verify the proposed MPC, the overall control of APF was implemented on a eZdsp F28335 board by using the hardware-in-the-loop technique. The testing results indicated that the proposed MPC can provide a fast and accurate harmonic current-tracking response compared with the proportional-integral controller. In the load changing condition, the MPC was still effective in providing a good result after compensation. The percentage of total harmonic distortion, the percentage current unbalance factor, and the power factor would also be kept within the IEEE Standard 519 and IEEE Standard 1459.
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Savenko, A. E., and P. S. Savenko. "Use and improvement of automatic systems for control of reduced electric power sources in local electric networks." Power engineering: research, equipment, technology 24, no. 4 (August 17, 2022): 105–15. http://dx.doi.org/10.30724/1998-9903-2022-24-4-105-115.
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THE PURPOSE. Consider the use of automatic systems for controlling reduced sources of electricity in local electrical networks. Explore the possibilities of expanding the functions of such automatic control systems to improve the quality of electricity in terms of eliminating power exchange and common-mode oscillations. METHODS. Studies of diesel generator units operating in parallel in local electrical networks were carried out using mathematical modeling methods. The mathematical model takes into account the presence of the "backlash" phenomenon in the speed control loops. RESULTS. The expediency of using batteries, rectifier and inverter converters in local electrical networks is noted. Experimental studies in the local electrical network revealed the existence of power exchange and common-mode oscillations. Mathematical modeling also confirmed the occurrence of power exchange oscillations in the local electrical network due to the “backlash” in the frequency controller circuit, as well as power common-mode oscillations due to the difference in the frequency controller transmission coefficients for diesel generator units operating in parallel. A map of the dependence of the amplitude of power exchange oscillations on backlash gaps and a map of the dependence of the amplitude of power common-mode oscillations on the values of the gain of the frequency controller are obtained. CONCLUSION. The possibility of eliminating power exchange and common-mode oscillations by reducing and ensuring equality of the transmission coefficients of frequency controllers has been established. Adding the function of eliminating power exchange and common-mode oscillations to automatic control systems for reduced sources of electricity in local electrical networks ensures that the required quality of electricity is maintained in quasi-steady operating modes.
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Oliveira, Tiago, Luís Caseiro, André Mendes, and Sérgio Cruz. "Finite Control Set Model Predictive Control for Paralleled Uninterruptible Power Supplies." Energies 13, no. 13 (July 3, 2020): 3453. http://dx.doi.org/10.3390/en13133453.
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Nowadays, uninterruptible power supplies (UPS) play an important role in feeding critical loads in the electric power systems such as data centers or large communication hubs. Due to the increasing power of these loads and frequent need for expansion or redundancy, UPS systems are frequently connected in parallel. However, when UPS systems are parallel-connected, two fundamental requirements must be verified: potential circulating currents between the systems must be eliminated and the load power must be distributed between the systems according to UPS systems availability. Moreover, a high-quality load voltage waveform must be permanently ensured. In this paper innovative control strategies are proposed for paralleled UPS systems based on Finite Control Set Model Predictive Control (FCS-MPC). The proposed strategies simultaneously provide: controlled load power distribution, circulating current suppression and a high-quality load voltage waveform. A new dynamic converters deactivation mechanism is proposed. This new technique provides improved overall system efficiency and reduced power switches stress. In this paper, two multilevel based UPS systems are parallel-connected. Each UPS contains two three-level Neutral Point-Clamped-Converters (3LNPC) and a three-level DC-DC converter. The presented experimental results demonstrate the effectiveness of the proposed control strategies in several operating conditions.
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Deaconu, Sorin Ioan, Marcel Topor, Gabriel Nicolae Popa, and Feifei Bu. "Hybrid Electric Vehicle with Matrix Converter and Direct Torque Control in Powertrains Asynchronous Motor Drives." MATEC Web of Conferences 292 (2019): 01066. http://dx.doi.org/10.1051/matecconf/201929201066.
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Electric transportation has made rapid developments and significant steps toward the full electrical powertrain systems. With the increased use of electric vehicles energy conversion systems several technologies have been developed and reached a high degree of performance. Since electric vehicles and hybrid are the more cost competitive technology available today, the evolution toward a more reliable powertrain combining different electric powertrain systems is needed. Induction machine and permanent magnet generators/motors integrated powertrains have some significant advantages over other types of systems such as no need of excitation, low volume and weight, high precision, and no use of a complex gearbox for torque/speed conversion. A electric vehicle powertrain for EV propulsion with a induction motor and a matrix converter is proposed in this paper. The induction motor is controlled using the direct torque flux algorithm. The traditional power conversion stages consist of a rectifier followed by an inverter and bulky DC link capacitor. It involves 2 stages of power conversion and, subsequently, the efficiency of the overall EV is reduced because of power quality issues mainly based on total harmonic distortion. The proposed solution incorporates a matrix converter is mainly utilized to control the induction electric motor for propulsion. The matrix converter is a simple and compact direct AC-AC converter. The proposed EV with matrix converter is modeled using PSIM.
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Zhang, Hao, and Zeyu Zhang. "Design of the Power System and Remote Control System for the Unmanned Ship." Journal of Physics: Conference Series 2121, no. 1 (November 1, 2021): 012021. http://dx.doi.org/10.1088/1742-6596/2121/1/012021.
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Abstract In lakes and reservoirs with high environmental protection requirements, it is necessary to adopt pure electric intelligent water quality monitoring ships, adopt pure electric power systems and intelligent remote control systems. This article specifically completed the design of the power system and remote control system of the smart ship, and elaborated the design method in detail. The system has the characteristics of high reliability, miniaturization, and modularization. The successful development of the system has greatly improved the intelligence of water quality monitoring ships, and has a positive effect on small intelligent ships in lakes and reservoirs.
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Pana, L. "Simulation of protection functions in LV shipboard electrical power systems." Scientific Bulletin of Naval Academy XXV, no. 1 (August 15, 2022): 8–15. http://dx.doi.org/10.21279/1454-864x-22-i1-001.
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The basic function of a shipboard electric power systems is to supply all consumers, both essential and non-essential, with electrical energy, as economically as possible and with an acceptable degree of quality. A shipboard electrical power system comprises three principal subsystems: generation (naval power plant-island mode plant), distribution and protection and automation. During operation all these subsystems may be affected by faults. In this aim all electrical installations on shipboards are to be protected against over-currents due to short- circuits or accidental overloads. The new ABB air circuit-breakers Emax 2 and Tmax T series can be used both as main circuit-breaker in low voltage generation and distribution systems. In addition to protection, the new air ABB circuit-breakers offer possibility of communication which are particularly suitable for automation, control, measurements, grid analysis, and energy savings. ABB Relays are high-performance electronic units for these circuit breakers. Their basic function is to monitor and protect the electric systems against fault current. The units also includes: measuring, data storage, communication, self-test, load control and zone selectivity functions for these circuit-breakers. This paper presents the analysis of protections and simulates how to trigger protections within shipboard power systems.
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Sinchuk, Oleg, Yulii Filipp, Albert Somochkyn, Ryszard Strzelecki, and Mila Baranovska. "Methods of improving power indices of electric drive active rectifiers for mine hoists." E3S Web of Conferences 280 (2021): 05014. http://dx.doi.org/10.1051/e3sconf/202128005014.
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The research deals with analyzing peculiarities of using active rectifiers in frequency controlled electric drives of underground mine hoists. There are developed MATLAB models aimed at comparing two types of control systems – hysteresis-based and the one with pulse-width modulation. The research aims to analyze power modes and parameters of active rectifiers, quality of voltage control, current and power of active rectifiers and to determine ways of improving power indices of electric equipment of hoists as well as provide power compatibility of electric equipment and underground mines’ grids. Main attention is paid to analyzing circuitry of control systems of active rectifiers, parameters of power transformers and reactor equipment at underground mines’ substations, frequency converters and synchronous slow-speed motors. There are also analyzed statistic data on power consumption at underground mines equipped with automated systems of commercial and technical power meters and specific consumption of power. The research results reveal advantages of the pulse-width modulation control system as compared with the hysteresis one by using such indices as speed-performance, quality of control, potential of controlling reactive power and the power factor. Application of the research results will enable determining structures and methods of adjusting control over the active rectifier in the frequency-controlled drive of underground mine hoists.
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Vagin, Gennady, Alexander Kulikov, Alexander Sevostyanov, and Anatoly Fitasov. "On the influence of electric power quality on the decimation of currents and voltages of utility frequency." E3S Web of Conferences 288 (2021): 01022. http://dx.doi.org/10.1051/e3sconf/202128801022.
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The electric power industry cannot develop without analyzing the factors that affect the shape of currents and voltages when determining the parameters of the electric network mode in the context of the introduction of modern means of intellectualization into the structure of power supply systems. The share of equipment affecting the electric power quality reaches 90% in modern electrical networks. This leads to the appearance of noise in the network that reduces the quality of electrical energy, voltage distortion by higher harmonic components in particular, and affects the adequacy of the parameters of the electrical network adopted by automatic control devices. The article presents the results of digital signal processing containing distortions in the form of a harmonic component with a decrease in the sampling frequency. It is shown that a decrease in the sampling frequency does not exclude the effect of higher harmonics on the result of processing signals, including high-frequency distortions.
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Zygarlicki, Jarosław, and Janusz Mroczka. "Prony’S Method Used for Testing Harmonics and Interharmonics in Electrical Power Systems." Metrology and Measurement Systems 19, no. 4 (December 1, 2012): 659–72. http://dx.doi.org/10.2478/v10178-012-0058-z.
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Abstract The article presents an application of Prony’s method with some known components in the analysis of electric power quality. Modifications of the Prony algorithm broaden the scope of method application. Modification of the filter of known components enables more accurate analysis of the parameters of unknown components and components with known or assumed frequencies. This article presents a comparison of the results of analyses conducted with the proposed algorithm for simulated and real signals and the results obtained by means of a commercial electric power quality testing device, operating in class A and using the Fourier transform. The proposed method enables to estimate the levels of the harmonic components, the frequency of the fundamental signal and real parameters of the interharmonic components, which are grouped and averaged in the contemporary monitoring equipment. Knowledge of the individual parameters of the interharmonics has considerable diagnostic importance while removing causes of incorrect operation affecting sensitive equipment in some electric power systems. Additionally, the algorithm is capable of analyzing exponentially damped components and finds its application in analysis of disturbances, for example, transient oscillations.
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Gwóźdź, Michał. "The Application of Tuned Inductors in Electric Power Systems." Energies 15, no. 22 (November 13, 2022): 8481. http://dx.doi.org/10.3390/en15228481.
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This work focuses on the possibility of using a tuned inductor in electric power systems with adaptive features. The presented idea of inductor operation, using an interaction of the magnetic fluxes, is a new approach to designing such devices. Examples of power adaptive systems are devices for improving the quality of electricity. Therefore, various types of ‘compensators’ of reactive power (or both reactive and distortion power) are used in electrical systems as a preventive measure. The tuned inductor, presented in this work, offers wider possibilities for power compensation in electric systems, compared to the classic solutions of compensators based on fixed inductors. Another possible implementation of such an inductor solution is in static power electronic devices, installed in AC transmission grids to increase power transfer capability, stability, and controllability, through a series and/or shunt compensation. Nevertheless, the use of the proposed device in the aforementioned electric systems is only one example of the possible implementations in the power electronics area. In this work, the following issues are presented: exemplary solutions of compensators with the adaptive features, rules of the tuned inductor operation, test results of the 3D field model of the inductor, and test results of the laboratory model of the electric system with this device.
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Bharati, Servesh, and Mrs Madhu Upadhyay. "Review on Electric Traction Systems Driving Induction Motor and Associated Power Quality Issues." SMART MOVES JOURNAL IJOSCIENCE 6, no. 3 (March 10, 2020): 23–26. http://dx.doi.org/10.24113/ijoscience.v6i3.278.
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The traction systems for electric vehicles have advanced considerably over recent years, with the application of different topologies of power converters for the control of various types of electric induction motors and permanent magnet. Furthermore, the evolution of power semiconductor elements of Si to SiC wideband have opened up lines of research and development in this area. The trend of manufacturer’s traction systems is to reach compact systems where the power dissipation is high and the reduction of losses is minimal, for it the implementation of topologies of converters with SiC devices seems to be a good alternative of use to improve the performance of these systems. This paper studies the basic topologies of back to back converter in traction systems als well as the powr quality issues arriving in these systems.
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Bharati, Servesh, and Mrs Madhu Upadhyay. "Review On Electric Traction Systems Driving Induction Motor and Associated Power Quality Issues." IJOSTHE 7, no. 1 (February 19, 2020): 4. http://dx.doi.org/10.24113/ojssports.v7i1.120.
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The traction systems for electric vehicles have advanced considerably over recent years, with the application of different topologies of power converters for the control of various types of electric induction motors and permanent magnet. Furthermore, the evolution of power semiconductor elements of Si to SiC wideband have opened up lines of research and development in this area. The trend of manufacturer’s traction systems is to reach compact systems where the power dissipation is high and the reduction of losses is minimal, for it the implementation of topologies of converters with SiC devices seems to be a good alternative of use to improve the performance of these systems. This paper studies the basic topologies of back to back converter in traction systems als well as the powr quality issues arriving in these systems.
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Sokólski, Paweł, Tomasz A. Rutkowski, Bartosz Ceran, Daria Złotecka, and Dariusz Horla. "The Influence of Cooperation on the Operation of an MPC Controller Pair in a Nuclear Power Plant Turbine Generator Set." Energies 15, no. 18 (September 13, 2022): 6702. http://dx.doi.org/10.3390/en15186702.
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The paper discusses the problem of cooperation between multiple model predictive control (MPC) systems. This approach aims at improving the control quality in electrical energy generation and forms the next step in a series of publications by the authors focusing on the optimization and control of electric power systems. Cooperation and cooperative object concepts in relation to a multi MPC system are defined and a cooperative control solution for a nuclear power plant’s turbine generator set is proposed. The aim of enabling information exchange between the controllers is to improve the performance of power generation. Presented and discussed simulation tests include various variants of information exchange between the turbine and synchronous generator MPC controllers of the nuclear power plant.
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Melnykov, V. "DESIGN OF THE POWER TRANSISTOR ENERGY CONVERTERS FOR AUTOMATED DC-DRIVE SYSTEMS." Electromechanical and energy saving systems 2, no. 53 (2021): 31–39. http://dx.doi.org/10.30929/2072-2052.2021.2.54.31-39.
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Purpose. One of the integral parts of modern mechatronic motion modules, where electric motors provide the conversion of electrical energy into useful mechanical action, are power semiconductor converters. At the current stage of industrial development, the use of energy converters as a part of a fully controlled semiconductor switches opens wide opportunities for the development and implementation of highly efficient resource- and energy-saving devices. Methodology. Two types of converters are widely used in automated DC electric drive systems: controlled thyristor rectifiers and pulse-width DC converters, the principle of operation of which is based on the key mode of operation of the regulating semiconductor, which periodically connects the source voltage to the output circuit. The paper presents a laboratory sample of a power semiconductor DC energy converter, which can ensure reliable motor operation in both motor and braking modes. Results. The presented transistor energy converter consists of two main parts: the first part performs the main role – control, and it includes a control unit, a microcontroller, and a device for displaying current information. The second part is a power module, which includes the necessary power supply modules, control drivers and power transistor switches of the converter. To obtain high quality transients of the electric drive system, the circuit is equipped with additional sensors of current, voltage and speed, which takes part in the formation of the control signal and in the protection systems against overvoltage and current jumps. Practical value. The paper substantiates the parameters of the components and proposes developed technical solutions for the construction of a microprocessor control system for a transistor DC energy converter. It is shown that in order to ensure a constant generator mode in automated electric drive systems, where the primary energy converter is an uncontrolled rectifier, it is expedient to install an energy discharge circuit in the DC link. References 18, figures 14.
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Lei, Tao, Zhihao Min, Qinxiang Gao, Lina Song, Xingyu Zhang, and Xiaobin Zhang. "The Architecture Optimization and Energy Management Technology of Aircraft Power Systems: A Review and Future Trends." Energies 15, no. 11 (June 2, 2022): 4109. http://dx.doi.org/10.3390/en15114109.
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With the development of More/All-Electric Aircraft, especially the progress of hybrid electrical propulsion or electrical propulsion aircraft, the problem of optimizing the energy system design and operation of the aircraft must be solved regarding the increasing electrical power demand-limited thermal sink capability. The paper overviews the state of the art in architecture optimization and an energy management system for the aircraft power system. The basic design method for power system architecture optimization in aircraft is reviewed from the multi-energy form in this paper. Renewable energy, such as the photo-voltaic battery and the fuel cell, is integrated into the electrical power system onboard which can also make the problem of optimal energy distribution in the aircraft complex because of the uncertainty and power response speed. The basic idea and research progress for the optimization, evaluation technology, and dynamic management control methods of the aircraft power system are analyzed and presented in this paper. The trend in optimization methods of engineering design for the energy system architecture in aircraft was summarized and derived from the multiple objective optimizations within the constraint conditions, such as weight, reliability, safety, efficiency, and characteristics of renewable energy. The cost function, based on the energy efficiency and power quality, was commented on and discussed according to different power flow relationships in the aircraft. The dynamic control strategies of different microgrid architectures in aircraft are compared with other methods in the review paper. Some integrated energy management optimization strategies or methods for electrical propulsion aircraft and more electric aircraft were reviewed. The mathematical consideration and expression of the energy optimization technologies of aircraft were analyzed and compared with some features and solution methods. The thermal and electric energy coupling relationship research field is discussed with the power quality and stability of the aircraft power system with some reference papers. Finally, the future energy interaction optimization problem between the airport microgrid and electric propulsion aircraft power system was also discussed and predicted in this review paper. Based on the state of the art technology development for EMS and architecture optimization, this paper intends to present the industry’s common sense and future trends on aircraft power system electrification and proposes an EMS+TMS+PHM to follow in the electrified aircraft propulsion system architecture selection
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Vlasov, A. B., S. A. Buev, V. V. Kucherenko, and V. I. Urvantsev. "Analysis of the traction motor electrical parameters of the trolleybus." Vestnik MGTU 25, no. 4 (December 22, 2022): 334–44. http://dx.doi.org/10.21443/1560-9278-2022-25-4-334-344.
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The technical equipment of modern trolleybuses (increased power of traction motors, regenerative-rheostatic braking, anti-slip and anti-lock systems, an on-board computer for monitoring and controlling the operation of the traction drive, GLONASS satellite systems, Internet access) increases the requirements for the quality of electrical energy and the electromagnetic compatibility of the installed equipment. In the course of the study, the electrical performance of the trolleybus traction asynchronous motor (voltage, current, voltage sinusoidal shape, total coefficient of harmonic voltage components) has been analyzed. Due to difficulties in the supply of foreign electrical equipment, primarily power electronics elements used to control the operation of the traction motor, there is an increasing need to improve measures for the maintenance of trolleybuses to increase the reliability and uptime of the equipment. The advantages of using the methods of quantitative thermography, analysis of the quality of electrical energy and control of the hardness of cable insulation have been experimentally established. With the help of an analyzer of electric energy quality, measurements of the quantitative indicators of the operation of the electric motor have been carried out; the thermal imager has been used to assess the thermal state of contact connections and cable routes. The use of new diagnostic methods is of particular relevance in the course of continuous long-term operation of electric transport in the Far North.
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Gibadullin, R. R., M. F. Nizamiev, I. V. Ivshin, A. N. Tsvetkov, O. V. Vladimirov, and Z. M. Shakurova. "A stand for the study of the operability and quality of functioning of electrical complexes and electric drive systems with frequency regulators." Power engineering: research, equipment, technology 24, no. 1 (May 24, 2022): 164–75. http://dx.doi.org/10.30724/1998-9903-2022-24-1-164-175.
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THE PURPOSE. To develop a stand for the study of the operability and quality of functioning of electrical complexes and electric drive systems with frequency regulators that have undergone major repairs.METHODS. When solving this problem, the method of direct evaluation of the mechanical characteristics of the system Source-Frequency ConverterMotor-Load was used, methods of direct evaluation of input parameters with subsequent calculation of indicators, methods of increasing algorithmic redundancy, mathematical methods of checks, logical control methods and complex control methods (the method of control tests, the method of control programs) were used. RESULTS. The analysis of test methods of frequency regulators was carried out, the necessary equipment was selected, stand control algorithms were determined, design documentation was developed, a stand was made to study the operability and quality of functioning of electrical complexes and electric drive systems with frequency regulators, the software of its control system was debugged, frequency converters were tested according to the developed methodology in accordance with GOST requirements.CONCLUSION. One of the most effective ways to determine the state of the frequency controller before sending it for installation is to check on a test bench to determine the degree of operability of the control and protection system, as well as the power part. The developed stand makes it possible to solve a wide range of tasks for the study of the operability and quality of functioning of electrical complexes and electric drive systems with frequency regulators that have undergone major repairs.
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Ogunboyo, Taiwo. "A Survey of Power Quality Enhancement in Distribution of System of Lines Using Distribution Static Synchronous Compensator." Science View Journal 3, no. 1 (April 15, 2022): 163–70. http://dx.doi.org/10.55989/babz6904.
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Distribution Static Synchronous Compensator (DSTATCOM) is a power electronics tool joined in parallel to the system of lines to mitigate the power quality disruptions such as electric potential swell, sag, electric potential imbalance, electric potential and current harmonics voltage spike, flicker, electric potential fluctuations related to the secondary system of lines.. DSTATCOM provides electric potential control and adequate mitigation for disturbances related with distribution of system lines in community. DSTATCOM is a3-phase device that produces/ take in the dynamic power which the final outcome can transformed suitable situation to deal with specific and accurate able to change quantity of the system of lines. This article offers a critical look to the researches on the DSTATCOM for energy quality enhancement in electric distribution systems. It explains the basic elements and configuration of DSTATCOM, the operation mode of DSTATCOM, principle of operation of DSTATCOM, DSTATCOM configurations, and DSTATCOM control strategies in the electric distribution network.
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Fedotov, Ilya, and Vyacheslav Tikhonov. "Simulation of Traction Electric Drive with Vector Systems of Direct Torque Control." Environment. Technology. Resources. Proceedings of the International Scientific and Practical Conference 2 (August 8, 2015): 106. http://dx.doi.org/10.17770/etr2013vol2.846.
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The article deals with investigation of electromechanical and energetic characteristics of traction electric drive with vector systems of direct torque control. As a controlled object the traction asynchronous motor ДТА-1У1, which is used to drive the trolley-bus is considered. At the present time the usage of traction asynchronous electric drives for town transport is relevant. Due to development of power electronic devices and microprocessor-based control systems it became possible to replace DC electric drives with electric drives with asynchronous motors. The article contains brief description of two different types of control systems: field-oriented control (FOC) and direct torque control (DTC). Principles of work for both systems are considered and the main advantages and disadvantages associated with the use of these systems are pointed out. The models of both systems for traction asynchronous electric drive, built in modeling environment MATLAB/Simulink, are given in this article for further comparative analysis. As the main quality factor of control total harmonic distortion (THD) is used.
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Kaliberda, I. V., S. S. Nefedov, and A. V. Pomerantsev. "Problems of Ensuring Seismic Resistance of Power Grid Facilities during Earthquakes." Occupational Safety in Industry, no. 10 (October 2020): 40–47. http://dx.doi.org/10.24000/0409-2961-2020-10-40-47.
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The electric grid system is the basis for functioning of the Unified electric power system of Russia and technologically isolated electric power systems. One of the most serious problems in the electric power industry is the aging of the fixed assets of already built and operating power grid facilities. The second problem is to clarify the seismic hazard of the territories of the Russian Federation in the direction of its growth. As a result, the number of power grid facilities fall into the zones of increased seismic hazard. In the zone of 7 points or more, approximately 30 % of the entire length of electric networks and transformer capacities are located. Information is provided about the characteristics of seismic load and how the objects respond to an earthquake. The experience of earthquakes testifies to the high vulnerability of the overhead power lines, cable power lines, substations, power transformers, relay protection equipment and automation under intense seismic loads. Information is provided about massive damage to the power grid during earthquakes in the territory of Russia, Armenia, and other countries of the world. Frequently occurring short circuits during earthquakes in electrical networks, at transformer substations, in electrical equipment elements of power grid facilities lead to fires. It is determined that power grid facilities have less seismic resistance than electric power generation facilities, than buildings and structures where electrical equipment is located. The problem of insufficiency of the current regulatory framework for ensuring seismic resistance of electric power facilities was also identified. Possible measures to prevent accident rate and increase the resistance, reliability, and seismic stability of power grid facilities in case of earthquakes are considered. The development of normative regulation will allow to take measures to ensure the seismic stability of power grid facilities in operation, and to ensure that control and supervision activities are carried out at a higher level.
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Chuyen, Tran Duc, Roan Van Hoa, Hoang Dinh Co, Tran Thi Huong, Pham Thi Thu Ha, Bui Thi Hai Linh, and Tung Lam Nguyen. "Improving control quality of PMSM drive systems based on adaptive fuzzy sliding control method." International Journal of Power Electronics and Drive Systems (IJPEDS) 13, no. 2 (June 1, 2022): 835. http://dx.doi.org/10.11591/ijpeds.v13.i2.pp835-845.
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In this paper, a solution to improve the precision in speed control for permanent magnet synchronous motors (PMSM) based on fuzzy adaptive sliding mode controller (FASMC) is proposed. In order to tackle the nonlinear tracking problem, continuously switching topologies are embedded. The designed algorithm and the closed electric drive system stability is examined by employing corresponding Lyapunov candidate functions. The results are numerically simulated and experimentally verified in the environment of MATLAB-Simulink, control Desk with dSPACE 1104 card, proving the applicability of the control algorithm which not only works well in simulations but also in practice for possible industrial traction drive applications.
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Shapoval, I. A., V. M. Mikhalsky, M. Yu Artemenko, V. V. Chopyk, and S. Y. Polishchuk. "CONTROL STRATEGIES TO ELIMINATE HARMONICS IN POWER GENERATION SYSTEMS BASED ON A DOUBLY-FED INDUCTION GENERATOR." Praci Institutu elektrodinamiki Nacionalanoi akademii nauk Ukraini, no. 61 (May 25, 2022): 13–24. http://dx.doi.org/10.15407/publishing2022.61.013.
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The variable speed power generation system based on a doubly-fed induction generator is the most popular in the wind industry. The stator is connected directly to the mains in such a generator, while the rotor is connected to the mains via a semiconductor converter. Low electric power quality increases energy and economic losses, leading to operational problems of production. Many publications discuss improving the electric power quality, particularly methods for eliminating harmonics for a power generation system based on a doubly-fed induction generator. Critical evaluation is needed to choose a method of eliminating harmonies for a particular case. The article presents an overview of different control methods for harmonic elimination in power generation systems based on a doubly-fed induction generator. Various strategies are used, which are used both in autonomous systems and in the mode of connection to the network. During the review of control methods for harmonic elimination, their different characteristics were noted, and the ad-vantages and disadvantages of each method were considered. Ref. 53, fig. 6.
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Shen, Guang, Shen Ye, Shuming Shen, Yongjin Xu, and Huaiying Shang. "Quality Data Collection and Quality Monitoring of Smart Electric Energy Meter Based on Acceleration Sensor." Journal of Sensors 2022 (June 14, 2022): 1–10. http://dx.doi.org/10.1155/2022/7583712.
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In order to solve the problem of frequent switching and tripping of intelligent power meter and ineffective power failure, a quality data collection and quality monitoring based on acceleration sensor is proposed. Firstly, this paper briefly describes the objects and methods of quality data acquisition and quality monitoring of intelligent watt hour meter. At the same time, based on the analysis of the requirements of quality data acquisition and quality monitoring of intelligent watt hour meter and based on B/S architecture, the quality data acquisition and quality monitoring framework of intelligent watt hour meter is designed. Finally, an intelligent power meter quality monitoring interface with friendly interactive and real-time display acceleration sensor is built using SVG and JavaScript technology. The results show that the collection and monitoring data based on acceleration sensor, three batches of three-phase 0.2 intelligent electric energy meters, meet the operation requirements. Among them, the batch failure rate and classification failure rate in the operation of the third batch are low, and the sampling qualified rate is high, which is an excellent level. The intelligent power meter quality data collection and monitoring system of acceleration sensor can also meet the requirements of full life cycle monitoring of intelligent energy meter quality. It provides a new method for the data acquisition of intelligent electric energy meter and hopes to provide some references for the timely discovery and solution of the quality problems of intelligent electric energy meter in the future.
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Haroon, Ayesha, Irfan Shafqat Javed, Huma Rehmat Baig, and Ali Nasir. "Modeling, Control and Placement of FACTS Devices: A Review." Mehran University Research Journal of Engineering and Technology 39, no. 4 (October 1, 2020): 719–33. http://dx.doi.org/10.22581/muet1982.2004.04.
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Over the past two decades, developing distributed energy sources in electric power grid have created new challenges related to the power quality, voltage adjustment and proficient energy utilization. Power electronic converters are widely used to interface the emerging energy systems (without and with energy storage) and smart buildings with the transmission and distribution systems. Flexible Ac Transmission Systems (FACTS) and Voltage-Source Converters (VSC), with smart dynamic controllers, are emerging as stabilization and power filtering equipment to improve the power quality. FACTS devices are of vital significance for tackling the problem of voltage instability which is inevitable and leads to losses in transmission system networks. These devices provide fast voltage regulation, ensure system stability and reactive power compensation. In this regard, modeling, control and appropriate placement of these devices in the transmission lines have been of great importance for researchers of power transmission systems. By using high speed power electronic converters, FACTS perform many times faster than the conventional compensation techniques. FACTS not only provide fast voltage regulation but also damping of active power oscillations and reactive power compensation. Hence, they increase the availability and reliability of the power systems. But, the functioning of a FACTS device extremely reckons upon its parametric quantity, appropriate placement, and sizing in the power network. In this paper, an extensive literature survey is presented to discuss and investigate these parameters of FACTS devices.
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Sachenko, Artem, Sergii Plieshkov, Petro Plieshkov, and Vasyl Zinzura. "Optimal Control of the Modes of Distribution Electrical Networks With Solar Power Plants Under Unbalanced Load." Central Ukrainian Scientific Bulletin. Technical Sciences 1, no. 6(37) (2022): 37–44. http://dx.doi.org/10.32515/2664-262x.2022.6(37).1.37-44.
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The article is devoted to improving the system of automatic control of modes of distribution electric networks containing solar power plants in order to achieve a simultaneous reduction of steady-state voltage deviations, voltage asymmetry at the terminals of consumers while maximizing the level of electricity generation by solar power plants. Ensuring normal permissible levels of electricity quality indicators in distribution networks is one of the most pressing issues that arise in the design and operation of modern distribution networks. Deterioration of the quality of electricity in electrical networks leads to the appearance of such negative phenomena, increase in additional losses in the elements of the electrical network, reduce the service life of electrical equipment, reduce the productivity of production equipment and others. The most significant negative impact on the functioning of the elements of electrical distribution networks, including electricity consumers, is observed with increasing levels of steady-state deviation and voltage asymmetry above the normative values. Modern solar inverters allow you to control the level of steady voltage deviation at the point of their connection to the mains. The design features of the construction of inverters of solar power plants allow them to change (within certain limits) not only the level of steady-state voltage deviation, but also to affect the level of voltage asymmetry and the parameters of the reactive power mode. In view of this, the task of improving automatic control systems for the distribution of electric networks with solar power plants, the implementation of which will take into account the multifunctional influence of solar inverters on the parameters of these networks is quite relevant. For the research, a fragment of a typical distribution electrical network with a nominal voltage of 10 kV was used, which contains a solar power plant that connects directly to the 10 kV busbars. The authors of the article set the problem of controlling the parameters of the mode of distribution electric network with solar power plants in the form of the problem of multicriteria optimization. An approach to solving this problem is also proposed, which is based on the method of solving problems of multicriteria optimization by approaching the utopian point in the space of criteria. Approximate calculations are carried out, which confirm the possibility of applying the proposed approach to the construction of systems for automatic control of the parameters of the mode of distribution electrical networks with solar power plants
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Harish, Basaralu Nagasiddalingaiah, and Usha Surendra. "A review on power quality issues in electric vehicle interfaced distribution system and mitigation techniques." Indonesian Journal of Electrical Engineering and Computer Science 25, no. 2 (February 1, 2022): 656. http://dx.doi.org/10.11591/ijeecs.v25.i2.pp656-665.
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Electric vehicles (EV) penetration in the distribution systems is evident and intended to grow day by day. Power quality issues pop up in the distribution system with an increase in EV penetration. Distribution networks need to consider the power quality issues developed due to the penetration of EVs for planning and designing the system. The power quality issues, including voltage imbalance, total harmonic distortion, distribution transformer failure, and related issues, are anticipated due to EV penetration in distribution systems. Detailed review of power quality issues and mitigation techniques are detailed in this paper. Discussion on the effect of these power quality issues on the distribution systems and corresponding mitigation measures are detailed. Power quality impact mitigation techniques have been discussed recently, which exploits the bidirectional power flow of vehicle to grid vehicle to grid (V2G) and grid to vehicle grid-to-vehicle (G2V). Methods and methodologies that mitigate power quality problems in the EV penetrated distribution system is discussed. Bidirectional power flow during EV charging and discharging and power quality issues in this topology is detailed in this review paper. A discussion on future trends and different possible future research paradigms is discussed as the review's conclusion.
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Kolosok, Irina, Elena Korkina, and Alexander Tikhonov. "Application of FACTS devices for flexibility control of transmission networks." E3S Web of Conferences 209 (2020): 02016. http://dx.doi.org/10.1051/e3sconf/202020902016.
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Maintenance of power balance at each time moment in every node and in the electric power system as a whole is a mandatory condition for supplying the electric power of required quality (frequency, voltage levels). Property of the system to be considered as its ability to control power balance is referred to as flexibility. Technologies for operating conditions control or systems services are an efficient means of regulating the flexibility of HV transmission networks in the cycle of on-line and anti-emergency control. Present-day FACTS of the second generation based on power electronics whose control systems ensure high efficiency of control and stabilization are the most perspective means of flexibility regulating and control. The paper considers potentials of using those devices for regulating the flexibility of 500/200 kV network that is a section of a real EPS. Calculations were performed in the simulation experiment and were based on real telemetry measurements using the State Estimation Software. The results of the studies have showed that substitution of the first-generation FACTS devices by the controlled second-generation FACTS devices and installation of new present-day FACTS allows notable enhancement of HV electric networks controllability and ensures the required level of networks flexibility.
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Leou, Rong-Ceng, Jen-Hao Teng, Heng-Jiu Lu, Bo-Ren Lan, Hong-Ting Chen, Ting-Yen Hsieh, and Chun-Lien Su. "Stochastic analysis of electric transportation charging impacts on power quality of distribution systems." IET Generation, Transmission & Distribution 12, no. 11 (June 19, 2018): 2725–34. http://dx.doi.org/10.1049/iet-gtd.2018.0112.
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Рева, Вадим Сергеевич, Константин Николаевич Земляной, and Виктор Петрович Фролов. "ОСОБЛИВОСТІ КОНТРОЛЮ І УПРАВЛІННЯ В СИСТЕМАХ ЕЛЕКТРОПОСТАЧАННЯ НАЗЕМНИХ КОМПЛЕКСІВ." Aerospace technic and technology, no. 7 (November 10, 2018): 25–31. http://dx.doi.org/10.32620/aktt.2018.7.04.
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The article shows the power quality indicators that are most important for electric consumers: high and low voltage, high-voltage pulses, harmonic distortion, unstable voltage, voltage dips. Possible contingencies in power supply systems of the ground complex (PSS GK) connected with a deviation from the norm of the quality of electric power parameters are analyzed. In accordance with this, the power quality indicators that affect the cyclogram of the preparation for the launch of a space rocket (SR), which need to be monitored, are determined. The objects of management of separate components for operational withdrawal from an emergency situation (ES) are considered. In order to improve the PSS structures and improve the quality and reliability of PSS GK, taking into account the operating modes, at the design stages of the power supply system of GK, it is necessary to create and allocate an automated remote control and monitoring system (ARKMS) as a separate structure within PSS NK. The main requirements for the ARKMS providing control of the power parameters at the terminals of the electrical consumers of the process equipment (PE) are determined by monitoring the oscillograms of the AC voltage, the voltage, frequency and the non-sinusoidal voltage of the alternating current voltage. In addition, ARKMS performs registration and display of power supply parameters of electric consumers, monitoring of the operation of PSS as a whole and their components with reference to a single-time system. In case of exceeding the permissible limits of the power quality indicators, ARKMS will allow to take operational measures necessary for parrying contingencies, thanks to the operation of the elements of the power supply system. Information support was provided with the construction of the generally accepted structural block diagram of such systems, on the basis of which the three-level structure of ARKMS is implemented. The algorithm and basic principles of the ARKMS operation in the normal mode and the mode of exceeding the norms of the power quality indicators (PQI) are considered. A brief description of the structure is given, as well as an example of an algorithm for input control of ARKMS.
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Nadweh, Safwan Mhrez, G. Hayek, and Bassam Atieh. "A New Central Control Scheme for Future Micro-Grid Systems Considering Variable Speed Drive Systems and Fuzzy Logic Control System." International Journal of Energy Optimization and Engineering 8, no. 2 (April 2019): 25–46. http://dx.doi.org/10.4018/ijeoe.2019040102.
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The increased use of nonlinear loads in power systems have caused problems with the quality of electrical power systems, which affects its performance. One of the most important nonlinear loads is variable speed drive systems (VSDS) which causes issues to the industrial plants power supply. In this article, the authors compare different control methods to apply the bias voltages required to operate transistors in the four-quadrant chopper which added to the dc- link of the variable-speed drive system in order to improve power quality, considering future micro-grid systems. A selection is then made of the appropriate one that improves power quality specifications. This article discusses the issues related to VSDS, such as total harmonic distortion factor THD%; the ripple factor of the DC current and voltage of the VSDS; and its harmful effects on the power system.
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Mutharasan, Anburaj, and Perumal Chandrasekar. "Fault detection and power quality analysis of wind turbine system using integrated systems." International Journal of Power Electronics and Drive Systems (IJPEDS) 13, no. 1 (March 1, 2022): 576. http://dx.doi.org/10.11591/ijpeds.v13.i1.pp576-585.
Full textAbstract:
Growth in the need for electric energy and fossil fuel scarcity endorses renewable energy generation sources. The generation cost of electric power utilizing wind turbines is cost-effective and straightforward compared to other renewable energy sources (RES). Recently, hasty research and developments have been presented in wind turbines (WT) by researchers globally. Although wind-based energy production is more content, planting the WT is challenging. Maintaining the WT from fault incidence is highly crucial. The fault in the WT distresses the power quality of the produced energy. This condensed power quality affects the transmission systems, substations, and loading end of the renewable source. Also, gear malfunctioning is the primary reason for most of the downtime in wind turbines. This work successfully proposed and implemented a deoxyribonucleic acid (DNA) sequencing-based control technique to reduce the drive train vibration. Therefore, fault detection and monitoring in WTs play an active part in power production and quality maintenance. In this work, a vibration-grounded WT gearbox fault observing scheme is proposed to increase the power quality. Precisely, a wavelet is executed to chart the vibration gesture. Also, the current sensor gesture is implemented to discover the power quality variances associated with the WT's vibration magnitude.
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Bulatov, Yuri, Andrey Kryukov, and Grigory Arsentyev. "Application of energy routers in railway power supply systems." MATEC Web of Conferences 239 (2018): 01047. http://dx.doi.org/10.1051/matecconf/201823901047.
Full textAbstract:
The development of electric power industry requires transition to the technological platform, encouraging implementation of smart grids. To set up these grids it is necessary to apply smart technologies of power supply system control modes, as well as interfaces, ensuring the connection of renewable energy sources. These interfaces may be represented by energy routers. The paper discusses the results of simulating emergency modes, caused by short circuits in 10 kV and 0.4 kV grids of non-traction users, connected via energy routers to the railway power supply system. The studies were performed in MATLAB system. Simulation results showed that the application of controlled energy routers for the non-traction user power supply completely removes electric power quality problems, allows for reliable integration of distributed generation plants into the power supply system, and limits short circuit currents and reduces the depth of the AC failure.
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Hadi, Ayad Mahmood, Ekhlas M. Thajeel, and Ali K. Nahar. "A novel optimizing PI control of shunt active power filter for power quality enhancement." Bulletin of Electrical Engineering and Informatics 11, no. 3 (June 1, 2022): 1194–202. http://dx.doi.org/10.11591/eei.v11i3.3225.
Full textAbstract:
In this paper, shunt active power filter (SAPF) is designed to address the problem of current harmonics in the source current arising from a nonlinear load and improve the quality of electric power. That will be by compensating reactive power and harmonic currents. The PI controller responsible for DC-link energy storage tuning was developed using the Lévy flight distribution algorithm (LFA). It is a novel, previously unused optimization approach to suggest relative gain Kp and integration gain Ki gain values for the PI controller. This approach aims to get the best dynamic performance of SAPF, speed up the convergence rate, get the fastest best stability and bypass constant voltage advancement for DC-link. The model was tested and implemented in MATLAB simulation software. The result of total harmonic distortion THD showed the efficiency of this method compared with the results of traditional PI. The design of the model in the current reference frame was based on instantaneous reactive power (pq) theory.