Bibliografie tematiche / Electric power systems – Mathematical models

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Letteratura scientifica selezionata sul tema "Electric power systems – Mathematical models"

Autore: Grafiati
Pubblicato: 4 giugno 2021
Ultima modifica: 31 gennaio 2023

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Articoli di riviste sul tema "Electric power systems – Mathematical models"

1

Ruiz Florez, Hugo A., Gloria P. López, Álvaro Jaramillo-Duque, Jesús M. López-Lezama e Nicolás Muñoz-Galeano. "A Mathematical Modeling Approach for Power Flow and State Estimation Analysis in Electric Power Systems through AMPL". Electronics 11, n. 21 (1 novembre 2022): 3566. http://dx.doi.org/10.3390/electronics11213566.

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Abstract (sommario):
This paper presents a mathematical modeling approach by which to solve the power flow and state estimation problems in electric power systems through a mathematical programming language (AMPL). The main purpose of this work is to show the advantages of representing these problems through mathematical optimization models in AMPL, which is a modeling language extensively used in a wide range of research applications. The proposed mathematical optimization models allow for dealing with particular issues in that they are not usually considered in the classical approach for power flow and state estimation, such as solving the power flow problem considering reactive power limits in generation buses, as well as the treatment of errors in state estimation analysis. Furthermore, the linearized mathematical optimization models for both problems at hand are also presented and discussed. Several tests were carried out to validate the proposed optimization models, evidencing the applicability of the proposed approach.
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2

Vikharev, D. Yu, e N. A. Rodin. "Model of implicit pole electric machine based on mathematical formulation of magnetic field in air gap". Vestnik IGEU, n. 6 (28 dicembre 2021): 27–37. http://dx.doi.org/10.17588/2072-2672.2021.6.027-037.

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When modeling transient processes in electric power systems, the issue of designing reliable models of electrical machines is of great interest. The most difficult task is to design the models of synchronous and asynchronous machines. The purpose of the project is to develop mathematical models of synchronous and asynchronous machines based on a generalized model of an implicit-pole machine that considers the change of rotor speed, geometric shapes, and the type of rotor and stator windings. Methods of mathematical modeling of electromagnetic fields in the air gap based on Maxwell equations and methods of the theory of electrical circuits are applied. A system of nonlinear differential equations is considered as a mathematical model of a generalized implicit-pole machine. The key assumption made is the high magnetic permeability of the stator and rotor cores. Technical data of real electric machines have been used for verification. Mathematical models of an implicit pole synchronous machine and an asynchronous machine with a phase rotor have been developed. These models can be used to analyze transient processes in the aggregate without dividing them into electromagnetic and electromechanical ones. The novelty of the models is the fact of non-sinusoidal distribution of the magnetic field in the air gap, various types of multiphase AC windings and rejecting the principle of constant rotation frequency at the time step of the simulation. The proposed mathematical models can be used to solve design problems, to analyze the modes of electric power systems, the operation of relay protection and automation of electric power facilities, and emergency automation. In the future, the equations that consider the influence of the damper circuits and the peculiarities of the windings will be added to the developed mathematical models. The purpose of further research is to develop models of salient-pole synchronous machines and asynchronous machines with a squirrel-cage rotor.
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Bitimanova, Saltanat Serikbaevna, e Asel Asylbekovna Abdildaeva. "Algorithm for optimal control of electric power systems". Bulletin of Toraighyrov University. Energetics series, n. 4.2020 (17 dicembre 2020): 78–91. http://dx.doi.org/10.48081/wddo6475.

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This paper provides information about the current state of the energy system in Kazakhstan. Also, analyzing the technical condition of the structure of the Kazakhstan electro power station, a mathematical model for complex power systems is developed. Algorithms of control with Adams-Bashforth multistep method are developed. There has been conducted the analysis and assessment of significant factors affecting the forecasted dynamics of electric power consumption, built based on multivariate regression and cointegration models.
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Mehta, U., R. Prasad e K. Kothari. "VARIOUS ANALYTICAL MODELS FOR SUPERCAPACITORS: A MATHEMATICAL STUDY". Resource-Efficient Technologies, n. 1 (9 maggio 2020): 1–15. http://dx.doi.org/10.18799/24056537/2020/1/218.

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Supercapacitors (SCs) are used extensively in high-power potential energy applications like renewable energy systems, electric vehicles, power electronics, and many other industrial applications. This is due to SCs containing high-power density and the ability to respond spontaneously with fast charging and discharging demands. Advancements in material and fabrication techniques have induced a scope for research to improve the application of SCs. Many researchers have studied various SC properties and their effects on energy storage and management performance. In this paper, various fractional calculus-based SC models are summarized, with emphasis on analytical studies from derived classical SC models. Study prevails such parameterized resistor–capacitor networks have simplified the representation of electrical behavior of SCs to deal with the complicated internal structure. Fractional calculus has been used to develop SC models with the aim of understanding their complicated structure. Finally, the properties of different SC models utilized by various researchers to understand the behavior of SCs are listed using an equivalent circuit.
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Manusov, Vadim, e Javod Ahyoev. "Technical Diagnostics of Electric Equipment with the Use of Fuzzy Logic Models". Applied Mechanics and Materials 792 (settembre 2015): 324–29. http://dx.doi.org/10.4028/www.scientific.net/amm.792.324.

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The possible technical diagnostics method of electrical power systems (EPS) has been considered, in particular, the electric equipment of substations and electric networks by means of using mathematical apparatus of indistinct sets and fuzzy logic theory. It is shown that on the basis of indistinct expert estimates it is possible to do a prediction for possible causes of failures if preliminary estimates of the failures signs available are known.
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Iakubovsky, Dmitry, Dmitry Krupenev e Denis Boyarkin. "A minimization model of the power shortage of electric power systems with regard to the restrictions on controlled sections". Analysis and data processing systems, n. 2 (18 giugno 2021): 95–120. http://dx.doi.org/10.17212/2782-2001-2021-2-95-120.

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A steady trend towards the development of electric power systems leads to their continuous enlargement and sophistication. As a result, new ways of their control appear. In this regard, the existing models and complexes for adequacy assessment may work inadequately and ineffectively in terms of the obtained results adequacy. To assess the current state of the existing models and complexes, we reviewed and analyzed the domestic and foreign software and computer systems. In particular, we considered mathematical models of minimizing the power shortage. This work is based on the problem of modifying mathematical models of minimizing the power shortage used in adequacy assessment of the electric power systems of one of the complexes under consideration. As a modification of mathematical models, it is proposed to exclude the existing method of using the line capacities and start use correct accounting for the maximum permissible active power flow in controlled sections. The experimental part reflected in the paper concerns the testing of options for models to minimize the power shortage, as well as the proposed modifications on various systems, including those consisting of three and seven reliability zones with a variable number of controlled sections and power lines included in them. The results of the study have shown that the proposed modifications are efficient and can be used in the future. The authors also obtained the most adequate results in terms of the physical laws of electric power system operation due to the model of minimizing the power shortage with quadratic losses which takes into account the limitations of power transmission over controlled sections.
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Bebikhov, Yuriy Vladimirovich, Dar'ya Vital'yevna Kazazaeva, Vasiliy Vasil'yevich Fedotov e Il'ya Anatol'yevich Yakushev. "DESIGN AND DEVELOPMENT OF MATHEMATICAL MODELS OF ELECTRIC POWER SYSTEMS OF INDUSTRIAL ENTERPRISES". Materials. Technologies. Design 4, n. 2 (2022): 5–13. http://dx.doi.org/10.54708/26587572_2022_4285.

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Popov, Denis I. "Mathematical modeling of electric power processes in integrated test benches with dc machines operating on the principle of mutual load". Yugra State University Bulletin 18, n. 2 (7 agosto 2022): 61–67. http://dx.doi.org/10.18822/byusu20220261-67.

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The subject of the study is electric power processes in integrated test benches with DC machines and induction machines operating on the principle of mutual loading. The purpose of the study is to obtain a mathematical model that allows us to study the operation of DC machines under specified conditions. Methods of mathematical modeling, well-known mathematical models of elements of two-link frequency converters, numerical methods for solving differential equations systems using the Runge-Kutta method of the fourth order of accuracy implemented in the Mathcad computer algebra system are used for the study. Mathematical modeling takes into account the nonlinearity of the magnetization curve of the magnetic circuits of electric machines and the pulsations of constant voltage supplied to their windings caused by the operation of converters. As a result of the study, mathematical models of electric power processes in test benches were obtained, which allow calculating currents in all branches of the considered electrical circuits, electromagnetic moments and the rotation frequency of the common shaft. The developed mathematical models can be applied in the design of integrated stands for testing DC machines and asynchronous machines by the method of mutual loading.
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SHEINA, G. "Analysis of mathematical models of transmission lines." Journal of Electrical and power engineering 23, n. 2 (23 dicembre 2020): 16–19. http://dx.doi.org/10.31474/2074-2630-2020-2-16-19.

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This paper investigates a mathematical model of one elements of the power supply system - power transmission lines. The type of models depends on the initial simplifications, which in turn are determined by the complexity of the physics of processes. The task of improving the accuracy of modeling of emergency processes in the power system is due to the significant complexity of modern power systems and their equipment, high-speed relay protection, automation of emergency management and the introduction of higher-speed switching equipment. One of the reasons for a significant number of serious emergencies in the system is the lack of complete and reliable information for modeling modes in the design and operation of power systems. The development of a mathematical model of a three-phase power line, which provides adequate reflection of both normal and emergency processes, is relevant. The advanced mathematical model of power transmission lines allows to investigate various operational modes of electric networks. The improved mathematical model of the power transmission line reflects all the features of physical processes at state modes and transient process and provides sufficient accuracy of the results. The type of mathematical model of power transmission lines depends on the accepted simplifications, depending on the task of research. The purpose of this work is to analyze the mathematical model of the power transmission line to study the modes of operation of the power supply system, with the possibility of its application to take into account all the design features of overhead and cable power lines. The mathematical model of the power line for the study of the modes of operation of the power supply system is analyzed. It is used to take into account the design features of overhead and cable power lines, skin effect.
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Shornikov, Yury, e Evgeny Popov. "Modeling and simulation of transients in electric power systems using hybrid system theory". ITM Web of Conferences 24 (2019): 02012. http://dx.doi.org/10.1051/itmconf/20192402012.

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Abstract (sommario):
Transients in electric power systems are of great interest to power engineers when designing a new or maintaining an existing system. The paper deals with using hybrid system theory for modeling and simulation of an electric power system with controllers. The presented technique is rather convenient and recommended as mathematical models of transients in electric power systems with controllers in general contain both continuous and discrete components. The modeling and simulation were carried out in the modeling and simulation environment ISMA, which is briefly presented in the paper.
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Tesi sul tema "Electric power systems – Mathematical models"

1

Altamirano, Chavez Armando. "An efficient algorithm using Householder's formulas for the solution of faulted power systems". Thesis, Kansas State University, 1986. http://hdl.handle.net/2097/9896.

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Wang, Yuanzhe, e 王远哲. "Macromodeling, passivity enforcement and fast simulation/verification for interconnects, power grids and large circuits". Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2011. http://hub.hku.hk/bib/B46604376.

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Landford, Jordan. "Event Detection Using Correlation within Arrays of Streaming PMU Data". PDXScholar, 2016. http://pdxscholar.library.pdx.edu/open_access_etds/3031.

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This thesis provides a synchrophasor data analysis methodology that leverages both statistical correlation techniques and a statistical distribution in order to identify data inconsistencies, as well as power system contingencies. This research utilizes archived Phasor Measurement Unit (PMU) data obtained from the Bonneville Power Administration in order to show that this methodology is not only feasible, but extremely useful for power systems monitoring, decision support, and planning purposes. By analyzing positive sequence voltage angles between a pair of PMUs at two different substation locations, an historic record of correlation is established. From this record, a Rayleigh distribution of correlation coefficients is calculated. The statistical parameters of this Rayleigh distribution are used to infer occurrences of power system and data events. To monitor an entire system, a simple solution would be observing each of these parameters for every PMU combination. One issue with this approach is that correlation of some PMU pairs may be redundant or yield little value to monitoring capabilities. Additionally, this approach quickly encounters scalability issues as each additional PMU adds considerably to computation - for example, if the system contains n PMUs the amount of computations will be n(n-1)/2. System-wide monitoring of these parameters in this fashion is cumbersome and inefficient. To address these issues, an alternative scheme is proposed which involves monitoring only a subset of PMUs characterized by electrically coupled zones, or clusters, of PMUs. These clusters include both electrically-distant and electrically-near PMU sites. When monitored over an event, these yield statistical parameters sufficient for detecting event occurrences. This clustering scheme can be utilized to significantly decrease computation time and allocation of resources while maintaining optimal system observability. Results from the statistical methods are presented for a select few case studies for both data and power system event detection. In addition, determination of cluster size and content is discussed in detail. Lastly, the viability of monitoring pertinent statistical parameters over various clustering schemes is demonstrated.
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Hall, David Eric. "Transient thermal models for overhead current-carrying hardware". Thesis, Georgia Institute of Technology, 1993. http://hdl.handle.net/1853/17133.

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Li, Xiaojuan. "Estimations of power system frequency, phasors and their applications for fault location on power transmission lines". University of Western Australia. School of Electrical, Electronic and Computer Engineering, 2008. http://theses.library.uwa.edu.au/adt-WU2008.0125.

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The thesis is devoted to the development of new algorithms for estimation of system frequency, power system phasors and transmission line fault location in the context of power system protection and control. A z-transform signal model combined with a nonlinear post-filtering scheme to estimate the operating frequency in a power system is first developed in the thesis. The signal model parameters are identified by an optimisation method in which the error between the model output and the actual signal that represents a voltage or current in the power system is minimised. The form and the structure of the signal model do not require iterations in the optimisation process for parameter identification. The system operating frequency is directly evaluated from the model parameters. Effects of noise and any frequency components other than the operating or supply-frequency on the accuracy are countered very effectively by applying a median post-filtering on the time series representing the frequency estimates derived from the model. Extensive simulation studies and comparisons with previously-published frequency estimation techniques confirm the high performance of the method developed in the thesis in terms of accuracy and time delay. With respect to power system phasor estimation, a method is developed based on waveform interpolation in the discrete time-domain to counter the spectral leakage errors arising in forming, by discrete Fourier transform (DFT), the supply frequency phasors representing power system voltages and currents when there are system frequency deviations from the nominal value. The interpolation scheme allows DFT evaluation to be performed with a time window length which is exactly equal to the fundamental period of the voltage or current waveform. Comparative studies presented in the thesis confirm the improvements achieved by the method proposed over other previouslypublished techniques in terms of accuracy and computing time. With the availability of accurate operating frequency and phasor estimates, an optimal fault location method based on multi-conductor distributedparameter line model is developed. The method is a general one which is applicable to any transmission line configurations, including multi-terminal lines. The fault location method is based on the minimisation of an objective function in which the fault distance is a variable. The objective function is formed from combining the phase-variable distributed-parameter equations of individual line sections from the fault point to the line terminals. The multivariable minimisation leads to high accuracy and robustness of the fault location algorithm in which any voltage/current measurement errors, including sampling time synchronisation errors, are represented in the estimation procedure as variables in addition to the fault distance. Extensive simulation studies are performed to verify that the method developed is highly accurate and robust. The thesis is supported by two international publications of which the candidate is a joint author.
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Khosravi-Dehkordi, Iman. "Load flow feasibility under extreme contingencies". Thesis, McGill University, 2007. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=100252.

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This thesis examines the problem of load flow feasibility, in other words, the conditions under which a power network characterized by the load flow equations has a steady-state solution. In this thesis, we are particularly interested in load flow feasibility in the presence of extreme contingencies such as the outage of several transmission lines.
Denoting the load flow equations by z = f(x) where z is the vector of specified injections (the real and reactive bus demands, the specified real power bus generations and the specified bus voltage levels), the question addressed is whether there exists a real solution x to z = f( x) where x is the vector of unknown bus voltage magnitudes at load buses and unknown bus voltage phase angles at all buses but the reference bus. Attacking this problem via conventional load flow algorithms has a major drawback, principally the fact that such algorithms do not converge when the load flow injections z define or are close to defining an infeasible load flow. In such cases, lack of convergence may be due to load flow infeasibility or simply to the ill-conditioning of the load flow Jacobian matrix.
This thesis therefore makes use of the method of supporting hyperplanes to characterize the load flow feasibility region, defined as the set the injections z for which there exists a real solution x to the load flow equations. Supporting hyperplanes allow us to calculate the so-called load flow feasibility margin, which determines whether a given injection is feasible or not as well as measuring how close the injection is to the feasibility boundary. This requires solving a generalized eigenvalue problem and a corresponding optimization for the closest feasible boundary point to the given injection.
The effect of extreme network contingencies on the feasibility of a given injection is examined for two main cases: those contingencies that affect the feasibility region such as line outages and those that change the given injection itself such as an increase in VAR demand or the loss of a generator. The results show that the hyperplane method is a powerful tool for analyzing the effect of extreme contingencies on the feasibility of a power network.
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Al-Gobaisi, Darwish M. K. F. "Economic scheduling in electric power systems : a mathematical model for the U.A.E". Thesis, Loughborough University, 1988. https://dspace.lboro.ac.uk/2134/7288.

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Wang, Minnan, e 王旻楠. "Islanding of systems of distributed generation using optimization methodology". Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2010. http://hub.hku.hk/bib/B44914933.

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Liu, Xinghua, e 刘兴华. "Power system operation integrating clean energy and environmental considerations". Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2009. http://hub.hku.hk/bib/B43085866.

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Uong, Hoang. "The application of the ordered list method and the dynamic programming to the unit commitment". PDXScholar, 1989. https://pdxscholar.library.pdx.edu/open_access_etds/3948.

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Libri sul tema "Electric power systems – Mathematical models"

1

Computational methods for electric power systems. 2a ed. Boca Raton: CRC Press, 2010.

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Crow, Mariesa. Computational methods for electric power systems. 2a ed. Boca Raton, FLA: CRC Press, 2010.

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Computational methods for electric power systems. Boca Raton, FL: CRC Press, 2003.

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4

A, Soliman S., a cura di. Optimal long-term operation of electric power systems. New York: Plenum Press, 1988.

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J, Arrillaga, a cura di. Power system harmonic analysis. Chichester: Wiley, 1997.

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Anders, George J., e Alfredo Vaccaro. Innovations in power systems reliability. London: Springer, 2011.

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Pardalos, P. M. Handbook of Power Systems I. Heidelberg: Springer, 2010.

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Anderson, P. M. Subsynchronous resonance in power systems. New York: IEEE Press, 1990.

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Momoh, James A. Electric power system applications of optimization. 2a ed. Boca Raton: Taylor & Francis, 2008.

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Electric power system applications of optimization. New York: Marcel Dekker, 2001.

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Capitoli di libri sul tema "Electric power systems – Mathematical models"

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Hobbs, Benjamin F., e Richard E. Schuler. "Evaluation of Electric Power Deregulation Using Network Models of Oligopolistic Spatial Markets". In Lecture Notes in Economics and Mathematical Systems, 208–54. Berlin, Heidelberg: Springer Berlin Heidelberg, 1985. http://dx.doi.org/10.1007/978-3-642-46548-2_9.

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Ghassemi, Afshin, Laura Soares, Hao Wang e Zhimin Xi. "A Novel Mathematical Model for Infrastructure Planning of Dynamic Wireless Power Transfer Systems for Electric Vehicles". In Handbook of Smart Energy Systems, 1–19. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-72322-4_99-1.

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Cutsem, Thierry, e Costas Vournas. "Mathematical Background". In Voltage Stability of Electric Power Systems, 137–73. Boston, MA: Springer US, 1998. http://dx.doi.org/10.1007/978-0-387-75536-6_5.

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Baldick, Ross. "Computing the Electricity Market Equilibrium: Uses of Market Equilibrium Models". In Restructured Electric Power Systems, 139–65. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2010. http://dx.doi.org/10.1002/9780470608555.ch4.

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Rezinkina, Marina M., Yevgen I. Sokol, Artur O. Zaporozhets, Oleg G. Gryb, Ihor T. Karpaliuk e Sergiy V. Shvets. "Mathematical Models of Electric Fields of Electric Transmission Lines". In Control of Overhead Power Lines with Unmanned Aerial Vehicles (UAVs), 79–84. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-69752-5_5.

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Yao, Jian, Shmuel S. Oren e Benjamin F. Hobbs. "Hybrid Bertrand-Cournot Models of Electricity Markets with Multiple Strategic Subnetworks and Common Knowledge Constraints". In Restructured Electric Power Systems, 167–92. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2010. http://dx.doi.org/10.1002/9780470608555.ch5.

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Lu, Qiang, Yuanzhang Sun e Shengwei Mei. "Basic Mathematical Descriptions for Electric Power Systems". In Nonlinear Control Systems and Power System Dynamics, 165–98. Boston, MA: Springer US, 2001. http://dx.doi.org/10.1007/978-1-4757-3312-9_5.

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Magdziarz, Andrzej, e Zbigniew Zagan. "Mathematical simulation model of power transformer for electrical power system protective schemes". In System Modelling and Optimization, 567–76. Berlin, Heidelberg: Springer Berlin Heidelberg, 1986. http://dx.doi.org/10.1007/bfb0043881.

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Christensen, G. S., e S. A. Soliman. "Mathematical Optimization Techniques". In Optimal Long-Term Operation of Electric Power Systems, 9–30. Boston, MA: Springer US, 1988. http://dx.doi.org/10.1007/978-1-4684-5493-2_2.

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Denysiuk, Serhii, Denys Derevianko e Halyna Bielokha. "Synthesis of Models of the Complex Electric Power Systems". In Power Systems Research and Operation, 107–31. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-17554-1_6.

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Atti di convegni sul tema "Electric power systems – Mathematical models"

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Andreev, Mikhail, Alexander Gusev, Almaz Sulaymanov e Yury Borovikov. "Setting of relay protection of electric power systems using its mathematical models". In 2017 IEEE PES Innovative Smart Grid Technologies Conference Europe (ISGT-Europe). IEEE, 2017. http://dx.doi.org/10.1109/isgteurope.2017.8260093.

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Bebikhov, Yuriy V., Darya V. Kazazaeva e Ilya A. Yakushev. "Designing and Developing Mathematical Models for the Electric Power Systems of Industrial Companies". In 2022 International Russian Automation Conference (RusAutoCon). IEEE, 2022. http://dx.doi.org/10.1109/rusautocon54946.2022.9896300.

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Valiev, Rustam, Sergey Gusev e Vladislav Oboskalov. "Mathematical models and optimal load shedding strategies for power system generation adequacy problem". In 2017 14th International Conference on Engineering of Modern Electric Systems (EMES). IEEE, 2017. http://dx.doi.org/10.1109/emes.2017.7980377.

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Vantsevich, Vladimir V., Jesse R. Paldan e Jeremy P. Gray. "A Hybrid-Electric Power Transmitting Unit for 4x4 Vehicle Applications: Modeling and Simulation". In ASME 2014 Dynamic Systems and Control Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/dscc2014-5855.

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Abstract (sommario):
In this paper, a technical concept is described for a hybrid-electric power transmitting unit (HE-PTU) to control the split of power between the drive axles of a 4×4 hybrid-electric vehicle. This new power transmitting unit is a mechatronic systems by its design and uses a planetary gear set and eddy current brake to provide a continuously variable (dynamic) gear ratio that can be integrated into the vehicle driveline between the transfer case and front axle. The paper details the electrical and mechanical characteristics of the device, including its various operation modes, its mathematical model built from the equations of the planetary gear set and eddy current brake, an optimization condition by which the device will be controlled to improve vehicle energy efficiency, as well as its torque and electrical current usage. Computer simulations are performed on a mathematical model of a 4×4 military truck using the power transmitting unit in conjunction with a series hybrid-electric configuration transmission.
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Trancossi, Michele, e Mauro Madonia. "The Efficiency of an Electric Turbofan vs. Inlet Area: A Simple Mathematical Model and CFD Simulations". In SAE 2012 Power Systems Conference. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2012. http://dx.doi.org/10.4271/2012-01-2217.

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Scoba, A. N., V. K. Mikhaylov e A. N. Panfilov. "Mathematical Models for Determining the Reliability Characteristics of Distributed Information Processing Systems in the Electric Power Industry". In 2020 International Russian Automation Conference (RusAutoCon). IEEE, 2020. http://dx.doi.org/10.1109/rusautocon49822.2020.9208193.

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7

Serebryakov, Artem, Alexey Steklov e Damir Kocheganov. "Neural Network Model to Diagnose Stand-alone Electric Power System". In 2021 3rd International Conference on Control Systems, Mathematical Modeling, Automation and Energy Efficiency (SUMMA). IEEE, 2021. http://dx.doi.org/10.1109/summa53307.2021.9632229.

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Kocheganov, Damir, Artem Serebryakov e Alexey Steklov. "Wind-Solar Electric Power System Simulation Model with Equipment Condition Assessment System". In 2020 2nd International Conference on Control Systems, Mathematical Modeling, Automation and Energy Efficiency (SUMMA). IEEE, 2020. http://dx.doi.org/10.1109/summa50634.2020.9280613.

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Freund, Mary K., Es’hagh Farzaneh Joubaneh, Oumar R. Barry e Emad Y. Tanbour. "Study of Vibration of Electric Power Steering Systems Using a Continuous System Model". In ASME 2017 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/imece2017-70755.

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Electric power steering systems (EPS) offer better fuel efficiency than hydraulic power steering system. However, EPS systems are plagued with noise and vibrations, which can undermine the comfort of drivers. In previous works, steering systems have been analyzed using two degree of freedom system. In this paper, a mathematical model of an electric power steering system is presented using a continuous system to model the steering column. The equations of motion and boundary conditions are derived using Lagrangian method. Explicit expressions are presented for the characteristic equation and mode shapes. Parametric studies are conducted to study the effects of different parameters on natural frequency.
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Nikolov, Nikola, e Dimo Stoilov. "Comparison of the conductors' mechanical mode calculations using different mathematical models". In 2017 15th International Conference on Electrical Machines, Drives and Power Systems (ELMA). IEEE, 2017. http://dx.doi.org/10.1109/elma.2017.7955460.

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Rapporti di organizzazioni sul tema "Electric power systems – Mathematical models"

1

Modlo, Yevhenii O., Serhiy O. Semerikov, Ruslan P. Shajda, Stanislav T. Tolmachev e Oksana M. Markova. Methods of using mobile Internet devices in the formation of the general professional component of bachelor in electromechanics competency in modeling of technical objects. [б. в.], luglio 2020. http://dx.doi.org/10.31812/123456789/3878.

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The article describes the components of methods of using mobile Internet devices in the formation of the general professional component of bachelor in electromechanics competency in modeling of technical objects: using various methods of representing models; solving professional problems using ICT; competence in electric machines and critical thinking. On the content of learning academic disciplines “Higher mathematics”, “Automatic control theory”, “Modeling of electromechanical systems”, “Electrical machines” features of use are disclosed for Scilab, SageCell, Google Sheets, Xcos on Cloud in the formation of the general professional component of bachelor in electromechanics competency in modeling of technical objects. It is concluded that it is advisable to use the following software for mobile Internet devices: a cloud-based spreadsheets as modeling tools (including neural networks), a visual modeling systems as a means of structural modeling of technical objects; a mobile computer mathematical system used at all stages of modeling; a mobile communication tools for organizing joint modeling activities.
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2

Little, Charles, e David Biedenharn. Technical assessment of the Old, Mississippi, Atchafalaya, and Red (OMAR) Rivers : channel geometry analysis. Engineer Research and Development Center (U.S.), agosto 2022. http://dx.doi.org/10.21079/11681/45147.

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The Old River Control Complex (ORCC) consists of the Low Sill, Auxiliary, and Overbank structures as features of the Old River Control Structure (ORCS) and the privately owned hydro-electric power plant. Operations of the ORCC manage the hydrologic connectivity between the Mississippi River and the Atchafalaya River/Red River systems. The morphology of the Old, the Mississippi, the Atchafalaya, and the Red Rivers (OMAR) has been influenced by the flow distribution at the ORCC, as well as the accompanying bed sediments. A geomorphic assessment of the OMAR is underway to understand the morphological changes associated with operation of the ORCC. Supporting the geomorphic assessment, a channel geometry analysis herein documents observed adjustments of the affected river channels. Historical hydrographic survey data were used in the Geographic Information System to create river channel geometric models, which inform the analysis. Geometric parameters for cross sections and volume polygons were computed for each survey and evaluated for morphological trends which may be ascribed to the influence of the ORCC. Additionally, the geometric parameters for the Atchafalaya River were used to extend the geometry analyses from the 1951 Mississippi River Commission report on the Atchafalaya River, which was the primary catalyst for the initial development of the ORCS.
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Rusk, Todd, Ryan Siegel, Linda Larsen, Tim Lindsey e Brian Deal. Technical and Financial Feasibility Study for Installation of Solar Panels at IDOT-owned Facilities. Illinois Center for Transportation, agosto 2021. http://dx.doi.org/10.36501/0197-9191/21-024.

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The Smart Energy Design Assistance Center assessed the administrative, technical, and economic aspects of feasibility related to the procurement and installation of photovoltaic solar systems on IDOT-owned buildings and lands. To address administrative feasibility, we explored three main ways in which IDOT could procure solar projects: power purchase agreement (PPA), direct purchase, and land lease development. Of the three methods, PPA and direct purchase are most applicable for IDOT. While solar development is not free of obstacles for IDOT, it is administratively feasible, and regulatory hurdles can be adequately met given suitable planning and implementation. To evaluate IDOT assets for solar feasibility, more than 1,000 IDOT sites were screened and narrowed using spatial analytic tools. A stakeholder feedback process was used to select five case study sites that allowed for a range of solar development types, from large utility-scale projects to small rooftop systems. To evaluate financial feasibility, discussions with developers and datapoints from the literature were used to create financial models. A large solar project request by IDOT can be expected to generate considerable attention from developers and potentially attractive PPA pricing that would generate immediate cash flow savings for IDOT. Procurement partnerships with other state agencies will create opportunities for even larger projects with better pricing. However, in the near term, it may be difficult for IDOT to identify small rooftop or other small on-site solar projects that are financially feasible. This project identified two especially promising solar sites so that IDOT can evaluate other solar site development opportunities in the future. This project also developed a web-based decision-support tool so IDOT can identify potential sites and develop preliminary indications of feasibility. We recommend that IDOT begin the process of developing at least one of their large sites to support solar electric power generation.
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