Статті в журналах: "Power supply quality"

1

Horton, S. "Power detectives [power supply quality checking]." Power Engineer 18, no. 5 (2004): 40. http://dx.doi.org/10.1049/pe:20040508.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

2

SAITOH, Hiroumi, Aung Ko Thet, Masahide UEHARA, Yusuke OISHI, Ryo SUYAMA, and Kouta MORIYA. "Discriminative Power Supply Based on Power Quality." Journal of The Institute of Electrical Engineers of Japan 127, no. 11 (2007): 705–8. http://dx.doi.org/10.1541/ieejjournal.127.705.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

3

Barker, S. "The hidden cost [power supply quality]." Computing and Control Engineering 18, no. 1 (February 1, 2007): 10–11. http://dx.doi.org/10.1049/cce:20070102.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

4

Kovernikova, Lidiia, and Roman Shamonov. "On power quality and reliability of supply." E3S Web of Conferences 25 (2017): 04001. http://dx.doi.org/10.1051/e3sconf/20172504001.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

5

Bandara, Sumangala, Civilai Leckie, Antonio Lobo, and Chandana Hewege. "Power and relationship quality in supply chains." Asia Pacific Journal of Marketing and Logistics 29, no. 3 (June 12, 2017): 501–18. http://dx.doi.org/10.1108/apjml-09-2016-0165.

Повний текст джерела

Анотація:

Purpose The purpose of this paper is to test the impact of power (coercive and non-coercive) on supply chain (SC) relationship success. In particular, this paper aims to examine the moderating effect of relationship quality (RQ) on the associations between power bases and relationship success. In turn, RQ and relationship success can impact the operational performance of the suppliers. Design/methodology/approach A survey of 284 Australian suppliers (growers of organic fruits and vegetables) was conducted to elucidate the associations among power, RQ, relationship success and operational performance. Findings RQ was found to only moderate the positive relationship between non-coercive power and relationship success. Moreover, RQ and relationship success were positively related to the suppliers’ operational performance. The findings conform those of previous research in which coercive power is negatively related to the supplier’s perception of relationship success while non-coercive power is positively related to the supplier’s perception of relationship success. Relationship success was found to mediate the relationships between the power bases and operational performance. Research limitations This study only collected data from one-side of the dyad (the suppliers). Another potential limitation is the existence of respondent bias, which can arise when a single respondent is asked to assess both the nature of the relationship and the performance outcomes of the relationship. Practical implications This study highlights the importance for managers to understand the dynamic shaping relationships when they want to signal their influence and RQ in inter-firm relationships associated with the SCs. Originality/value This study applies signaling theory as an alternative theoretical lens that looks into the moderating role of RQ on the associations between power bases and relationship success in the SC. This study argues that when the buyer increasingly develops RQ, the effect of non-coercive power on relationship success diminishes. Both RQ and relationship success positively influence the supplier’s operational performance.

Стилі APA, Harvard, Vancouver, ISO та ін.

6

Fabijański, Piotr. "Improving Power Quality in AC Supply Grids." Acta Energetica 4, no. 25 (December 2, 2015): 15–21. http://dx.doi.org/10.12736/issn.2300-3022.2015402.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

7

Hirose, Keiichi, Akiyoshi Fukui, Akira Matsumoto, Hideyuki Murai, Takashi Takeda, and Toshiro Matsumura. "Development of Multiple Power Quality Supply System." IEEJ Transactions on Electrical and Electronic Engineering 5, no. 5 (August 25, 2010): 523–30. http://dx.doi.org/10.1002/tee.20568.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

8

Valyanskii, A. V., I. I. Kartashev, and Yu V. Sharov. "Determination of power-supply reliability with regard to power quality." Russian Electrical Engineering 85, no. 5 (May 2014): 274–79. http://dx.doi.org/10.3103/s1068371214050125.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

9

Singh, Shikha, Bhim Singh, G. Bhuvaneswari, and Vashist Bist. "A Power Quality Improved Bridgeless Converter-Based Computer Power Supply." IEEE Transactions on Industry Applications 52, no. 5 (September 2016): 4385–94. http://dx.doi.org/10.1109/tia.2016.2575365.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

10

Singh, Shikha, Gurumoorthy Bhuvaneswari, and Bhim Singh. "Power Quality Improvement in Three-phase Telecommunication Power Supply System." Electric Power Components and Systems 43, no. 19 (October 9, 2015): 2105–15. http://dx.doi.org/10.1080/15325008.2015.1077486.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

11

Barros, Julio, Daniel Cando, and Iker Durana. "A Laboratory for Power Quality Analysis." International Journal of Electrical Engineering & Education 38, no. 3 (July 2001): 210–22. http://dx.doi.org/10.7227/ijeee.38.3.3.

Повний текст джерела

Анотація:

This paper describes a laboratory designed for electrical power quality analysis. Among the different types of disturbances in voltage supply that the laboratory allows us to generate are harmonics, voltage dips and short interruptions in voltage supply, voltage imbalance and frequency deviations. Using this laboratory we can test software for analysis, detection and classification of power quality disturbances and also study their effects on equipment.

Стилі APA, Harvard, Vancouver, ISO та ін.

12

Zheng, Liang, and Farzana Akter. "Power Quality Control System of High-Power-Density Switching Power Supply for Green Environment." Mathematical Problems in Engineering 2022 (September 16, 2022): 1–11. http://dx.doi.org/10.1155/2022/9692974.

Повний текст джерела

Анотація:

There is higher harmonics and electromagnetic interference caused by high-power-density switching power supply during high-frequency and normal operations which affects power quality of switching power supply and also impacts the environment. To solve this problem, this paper proposes a dual digital signal processor (DSP) controller suitable for unified power quality regulators and designs high-power-density switching power supply control system for promoting green environment. The overall structure of the system is divided into two parts, the power main circuit and the control circuit. In the main power circuit, the electromagnetic interference (EMI) filter is used to filter the input AC voltage and convert it into a stable DC voltage. A high-frequency inverter is used to invert the DC voltage into a high-frequency AC voltage to achieve harmonic control and reactive power compensation. In the control circuit, dual DSP controller is used to improve real-time detection, control of the output voltage, and current and driver temperature of the high-power-density switching power supply, while high-precision analysis and processing system collect different information and then achieve the power quality control of the switching power supply based on system software to keep this environment green. The experimental results suggest that the harmonic content of the experimental objects controlled by the system is reduced by 16.7% compared with the existing power quality control and the absolute error of the system is less than 0.02 V which improves the de-noising performance. The power generation systems require that the consumption of natural resources and renewable energy solutions can assist in saving the natural resources.

Стилі APA, Harvard, Vancouver, ISO та ін.

13

Ward, D. J. "Power quality and the security of electricity supply." Proceedings of the IEEE 89, no. 12 (2001): 1830–36. http://dx.doi.org/10.1109/5.975919.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

14

Roy, Sudhin, and L. Umanand. "Integrated Magnetics-Based Multisource Quality AC Power Supply." IEEE Transactions on Industrial Electronics 58, no. 4 (April 2011): 1350–58. http://dx.doi.org/10.1109/tie.2010.2049712.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

15

Femine, Antonio Delle, Daniele Gallo, Domenico Giordano, Carmine Landi, Mario Luiso, and Davide Signorino. "Power Quality Assessment in Railway Traction Supply Systems." IEEE Transactions on Instrumentation and Measurement 69, no. 5 (May 2020): 2355–66. http://dx.doi.org/10.1109/tim.2020.2967162.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

16

Kato, K., H. Nagasaka, A. Okimoto, T. Kunieda, and T. Nakamura. "Distribution automation systems for high quality power supply." IEEE Transactions on Power Delivery 6, no. 3 (July 1991): 1196–204. http://dx.doi.org/10.1109/61.85868.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

17

Wu, Jingtao, Pei Wang, Jin Cai, and Ying Liu. "Research on Civil Aircraft Flight Test of Power Supply Quality Analysis." Journal of Physics: Conference Series 2136, no. 1 (December 1, 2021): 012016. http://dx.doi.org/10.1088/1742-6596/2136/1/012016.

Повний текст джерела

Анотація:

Abstract In the process of civil aircraft airworthiness, analyzing power quality is the key to verify whether the power supply system meets the requirements of the clause. This paper makes deep research on the domestic and foreign power supply quality standard files and detailed introduces the characteristics of the power supply quality standard files. Then, comparative and analysis give suggestions which tally with power supply quality test requirements. Finally, define the special power supply quality test method for the practical engineering specifically, and power supply quality test characteristic in civil aircraft flight test, to provide guidance help for the future civil aircraft models.

Стилі APA, Harvard, Vancouver, ISO та ін.

18

Papaika, Yurii, Oleksandra Lysenko, and Grzegorz Kosobudzki. "Power Quality and Resonances in Power Supply Systems with Non-Sinusoidal Loads." Advanced Engineering Forum 25 (November 2017): 143–50. http://dx.doi.org/10.4028/www.scientific.net/aef.25.143.

Повний текст джерела

Анотація:

The stress is made on the necessity to take into account the impact of higher while analysing the quality of voltage in power supply systems of coal mine. The process of resonances in power supply systems is explained in terms of physics, the sources generating this kind of interference are described. Mathematical dependences that allow to identify resonances in power supply systems are provided. The focus is placed on the feasibility of using spectral analysis in computations. To investigate the understudied aspects of voltage quality and electromagnetic compatibility and provide mathematical description for the analysis of resonances in electrical networks with powerful non-sinusoidal loads.

Стилі APA, Harvard, Vancouver, ISO та ін.

19

Qu, Jun, Peng Fu, Yanan Wu, Jing Lu, Mingxing Zhu, Yan Liang, and Yunxiang Tian. "Power Quality Analysis for Poloidal Field Power Supply System in EAST." Fusion Science and Technology 77, no. 4 (May 5, 2021): 316–26. http://dx.doi.org/10.1080/15361055.2021.1880248.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

20

Kulikov, A. L., P. V. Ilyushin, and A. A. Sevostyanov. "Statistical Sampling for Power-Quality Monitoring in Modern Power-Supply Systems." Russian Electrical Engineering 93, no. 4 (April 2022): 254–60. http://dx.doi.org/10.3103/s1068371222040071.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

21

Anto, A. Ajith, and K. manivannan. "A Power Quality Improved Bridgeless KY Converter Based Computer Power Supply." International Journal of MC Square Scientific Research 9, no. 1 (April 16, 2017): 130–36. http://dx.doi.org/10.20894/ijmsr.117.009.001.015.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

22

Narula, Swati, Bhim Singh, and G. Bhuvaneswari. "Improved Power-Quality-Based Welding Power Supply With Overcurrent Handling Capability." IEEE Transactions on Power Electronics 31, no. 4 (April 2016): 2850–59. http://dx.doi.org/10.1109/tpel.2015.2454994.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

23

Yeh, Chia-Chou, and Madhav D. Manjrekar. "A Reconfigurable Uninterruptible Power Supply System for Multiple Power Quality Applications." IEEE Transactions on Power Electronics 22, no. 4 (July 2007): 1361–72. http://dx.doi.org/10.1109/tpel.2007.900486.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

24

Singh, Shikha, Bhim Singh, G. Bhuvaneswari, and Vashist Bist. "Improved Power Quality Switched-Mode Power Supply Using Buck–Boost Converter." IEEE Transactions on Industry Applications 52, no. 6 (November 2016): 5194–202. http://dx.doi.org/10.1109/tia.2016.2600675.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

25

Виноградов, Александр, Aleksandr Vinogradov, Алина Виноградова, and Alina Vinogradova. "ANALYSIS OF THE MAIN COMPONENTS OF EFFICIENCY OF POWER SUPPLY SYSTEMS TO RURAL CONSUMERS." Vestnik of Kazan State Agrarian University 14, no. 3 (October 30, 2019): 96–102. http://dx.doi.org/10.12737/article_5db967bc093eb8.49124573.

Повний текст джерела

Анотація:

Interpretation of the efficiency of power supply systems is proposed, according to which the main criterion of efficiency is minimization of costs for the operation of the power supply system under certain conditions related to the reliability of power supply, power quality and timing of technological connections. The methodological approach to improving the efficiency of power supply systems for rural consumers requires the development of efficiency criteria that would allow all measures to improve the reliability of electricity supply, power quality, shorten time and improve the quality of technological connections to lead to uniform indicators by which to evaluate the effectiveness of these measures. The costs arising from the operation of power supply systems can be divided into stimulating and providing. Both of these components, in turn, are also divided, while the stimulating costs include those components of costs that stimulate electricity supply companies to comply with the requirements of reliability of power supply, power quality, quality of services of technical connections. Regulation of incentive costs, which include damages from interruptions in power supply, compensation costs, lost profits, etc. allows you to manage the efficiency of power supply systems. Providing costs include investment and operating costs, since these types of costs provide the ability to fulfill the conditions of quality of services provided by electricity supply companies. All components of the costs associated with the values of the time of interruptions in the power supply, the time of the mismatch of the quality of electricity and the time of the technical connections. The dependencies of component costs on the time of interruptions in power supply are shown. These dependencies can be interpreted in the opposite version, as time dependencies on costs. This reading allows them to develop incentive mechanisms for energy companies and consumers to improve the reliability of power supply, power quality and quality of connection services.

Стилі APA, Harvard, Vancouver, ISO та ін.

26

Singh, Shikha, Bhim Singh, G. Bhuvaneswari, and Vashist Bist. "Power Factor Corrected Zeta Converter Based Improved Power Quality Switched Mode Power Supply." IEEE Transactions on Industrial Electronics 62, no. 9 (September 2015): 5422–33. http://dx.doi.org/10.1109/tie.2015.2415752.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

27

Nikhil, Mandapati, and K. Rajagopala. "Power Quality Enhancement using A Unified Power Quality Conditioner (UPQC)." International Journal of Engineering and Advanced Technology 11, no. 5 (June 30, 2022): 168–70. http://dx.doi.org/10.35940/ijeat.e3627.0611522.

Повний текст джерела

Анотація:

This project proposes effective work to increase the power quality in the power system by using a Unified Power Quality Conditioner (UPQC) The advanced use of power electronic devices introduces harmonics in the power system which creates a problem in the quality of power delivered. Although several methods are there for improving power quality standards, including the use of active and passive filters, and Hybrid filters have been developed, these methods face issues and are ineffective due to the growing number of applications. The UPQC is an advanced technique for mitigating voltage and load current supply fluctuations. In this project the combination of series active filter and shunt active filter is studied. UPQC is used to reduce the power quality issues like harmonics and sag. The shunt active filter and series active filter performs the simultaneous elimination of current and voltage problems. The project work presents the working of the UPQC filter in such a way that the harmonics are reduced.

Стилі APA, Harvard, Vancouver, ISO та ін.

28

Borodin, M., A. Psarev, T. Kudinova, and R. Mukhametzhanov. "Improving power quality by calculating voltage losses." E3S Web of Conferences 124 (2019): 01041. http://dx.doi.org/10.1051/e3sconf/201912401041.

Повний текст джерела

Анотація:

The problem of improving power quality (PQ) in the integrated power grid of Russia is an urgent task. The article analyzes the number of power consumers’ calls to Kromskiye District Power Networks “Orelenergo”, a branch of the PJSC “IDGC of the Center” for the issue that power quality indices go beyond the standards established in the regulations. The most common complaints of power consumers are low voltage, high voltage, voltage fluctuations. This is primarily due to physical and obsolete depreciation of the main power grid equipment of the power supply organization, disinterest of consumers and the power supply organization in maintaining power quality at the level of regulations, as well as the lack of power supply or-ganization’s software products that allow real-time voltage loss calculations and offer measures to improve the power quality. The presented algorithm, based on calculations of voltage losses, suggests measures to improve the power quality. The application of the proposed algorithm of the program will allow to increase PQ by means of timely determination of voltage losses.

Стилі APA, Harvard, Vancouver, ISO та ін.

29

Bolshev, Vadim E., Aleksandr V. Vinogradov, Alina V. Vinogradova, Aleksey V. Bukreev, and Aleksandr A. Lansberg. "Adjusting Electricity Cost Depending on Power Supply Outages." Elektrotekhnologii i elektrooborudovanie v APK 67, no. 2 (June 24, 2020): 44–50. http://dx.doi.org/10.22314/2658-4859-2020-67-2-44-50.

Повний текст джерела

Анотація:

During the functioning of power supply system, there can be situations where the culprit in interruptions of power supply to consumers and a power quality violation is a power supply company or a consumer himself. Therefore, the economic incentive for power supply companies and consumers to increase power supply reliability and power quality is an urgent task. To implement such incentives, it is necessary to control the facts and time of power supply outages and their values as well as cases and time of non-compliance of power quality with the requirements of standards. It is possible with the use of a monitoring system for power supply reliability and power quality. (Research purpose) The research purpose is in developing a technical and economic method for stimulating power supply companies and consumers to increase efficiency of power supply system. (Materials and methods) The article provides a review of the structural diagram of a system for monitoring power supply reliability and power quality including devices for monitoring the number and duration of power outages and voltage deviations. (Results and discussion). An economic method has been developed to stimulate power supply companies and consumers to increase power supply system efficiency. The essence of the method is to control the parameters of power supply reliability and power quality, identify the violation of these parameters, determine the culprit of the violation, determine the time characteristics of the violation, summarize the duration of violations for the reporting period, compare the actual amount of duration with the allowable one, determine the amount of compensation for the violation and impose sanctions on payment compensation by the perpetrators of violations of these parameters. The article presents an algorithm for adjusting the cost of electricity supplied to consumers depending on the number and duration of voltage deviations and the number and duration of outages. The algorithm serves to ensure the operation of the specified technical and economic method. (Conclusions) The algorithm works in conjunction with a system for monitoring power supply reliability and power quality based on signals from devices that control the number and duration of outages and voltage deviations.

Стилі APA, Harvard, Vancouver, ISO та ін.

30

Stawowy, Marek, Adam Rosiński, Mirosław Siergiejczyk, and Krzysztof Perlicki. "Quality and Reliability-Exploitation Modeling of Power Supply Systems." Energies 14, no. 9 (May 10, 2021): 2727. http://dx.doi.org/10.3390/en14092727.

Повний текст джерела

Анотація:

This article describes the issues related to the analysis of the reliability-exploitation of power supply systems in transport telematics devices (PSSs in TTDs). This paper characterizes solutions, which are applied in supply systems, and describes a PSS in a TTD from a main source and a standby one. This enables determining the dependencies denoting the probabilities of the system staying in full ability state, safety threat state, and safety unreliability state. A quality analysis of the PSS in TTD was conducted, and the indicator value of the supply continuity quality was evaluated. This indicator allows the demonstration of continuity quality of power supply (CQoPS) dependency on many quality dimensions, not just reliability. An example demonstrates the calculation of CQoPS factor for both the main and the standby power supply, employing three observations, each influencing the quality. The presented considerations in the field of quality and reliability-exploitation modeling of a PSS can be applied as well in other public utility facilities (including those classified as critical infrastructure). The character of functions performed by critical infrastructure facilities demands an operating continuity of these systems at an appropriate level. The co-first authors of the article once again address the issue of determining CQoPS factor, this time on the basis of modeling using mathematical evidence. TTD is an example in this article, because the presented methods can be used in any kind of system, especially in the power source of critical systems.

Стилі APA, Harvard, Vancouver, ISO та ін.

31

Mitsukuri, Yuki, Hiroyuki Kita, Ryoichi Hara, Eiichi Tanaka, and Jun Hasegawa. "Reliability Evaluation Considering Customized Power Quality Supply in FRIENDS." IEEJ Transactions on Power and Energy 124, no. 1 (2004): 43–52. http://dx.doi.org/10.1541/ieejpes.124.43.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

32

Collinson, A. "Power quality - the volts and amps of electricity supply." IEE Review 45, no. 3 (May 1, 1999): 122–24. http://dx.doi.org/10.1049/ir:19990309.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

33

Friesen, Brandon. "The Shocking Truth [About U.S. Electric Power Supply Quality]." EDPACS 26, no. 6 (December 1998): 18. http://dx.doi.org/10.1201/1079/43243.26.6.19981201/30234.4.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

34

Prousalidis, J., E. Styvaktakis, F. Kanellos, S. Perros, and E. Sofras. "Electric Power Supply Quality in ship systems: an overview." International Journal of Ocean Systems Management 1, no. 1 (2008): 68. http://dx.doi.org/10.1504/ijosm.2008.017782.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

35

Mitsukuri, Yuki, Hiroyuki Kita, Ryoichi Hara, Eiichi Tanaka, and Jun Hasegawa. "Reliability evaluation considering customized power quality supply in FRIENDS." Electrical Engineering in Japan 151, no. 4 (2005): 25–35. http://dx.doi.org/10.1002/eej.20053.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

36

Swapna Sai, P., G. G. Rajasekhar, T. Vijay Muni, and M. Sai Chand. "Power quality and custom power improvement using UPQC." International Journal of Engineering & Technology 7, no. 2.20 (April 18, 2018): 41. http://dx.doi.org/10.14419/ijet.v7i2.20.11742.

Повний текст джерела

Анотація:

The Series and Shunt units don’t have a typical dc link. So their control systems not exactly as same as the traditional UPQC control strategies.This device can improve power quality and composes power electronic series which was in MV/LV Substation, alongside a few electronic-shunt units associated near the end users.Additionally, the increment in power quality can be given to the users we require the shunt units.It reduces the disturbances for all customers that supply main series unit. It provides the customerwith the shunt units. A proposed solution model of LV grid is 400-KVA is considered as steady-state performance and functionalizing units. Outcomes acquired under enduring state conditions justify the design picked and great gadget execution.

Стилі APA, Harvard, Vancouver, ISO та ін.

37

Antsiferov, N. S. "Ways to Reduce Power Losses in Mining Power Supply Lines." Mining science and technology 4, no. 2 (August 25, 2019): 150–56. http://dx.doi.org/10.17073/2500-0632-2019-2-150-156.

Повний текст джерела

Анотація:

Electric energy is the most common and universal form of energy. It can be produced in large quantities near energy sources, transmitted to large distances, easily distributed between consumers and converted into mechanical, thermal, and light energy. Ensuring reliable and economical quality electric energy supply to mining enterprises with the optimal use of energy resources is one of the most important tasks facing the country's energy sector. In the Russian Federation, high degree of concentration of generating capacities at power plants has been achieved. The main capacities are concentrated in power plants with installed capacity of more than 1 million kW. High importance of the electric power industry is determined by the infrastructural nature of the industry and the direct relationship between the country's economic growth and the level of its development effectiveness. One of the most pressing problems of modern electricity supply is the problem of ensuring the quality of electric energy. The main reason for the deterioration in the electricity quality is widespread non-linear loads that create non-sinusoidal currents and voltage unbalance during their operation. The voltage unbalance is most often caused by the presence of an unbalanced load. Unbalanced load currents flowing through the elements of the power supply system cause unbalanced voltage losses in them. This results in appearance of unbalanced voltages on the terminals of electric apparatus. The voltage deviations at electric apparatus overdriven phase may exceed the normally acceptable values, while the voltage deviations at electric apparatus other phases may remain within the normal limits. In addition to the deterioration of the voltage mode at electric apparatus under the unbalanced voltage conditions, the operating conditions of both the electric apparatus and all the network elements are significantly worsened, and the reliability of the electrical equipment and the power supply system as a whole decreased. The paper considers the issues of reducing the voltage losses in power supply networks by improving quality of electric power.

Стилі APA, Harvard, Vancouver, ISO та ін.

38

Guan, Shangshu, Yidan Song, and Shun Tao. "Analysis of power quality problems in DC distribution network." Journal of Physics: Conference Series 2221, no. 1 (May 1, 2022): 012028. http://dx.doi.org/10.1088/1742-6596/2221/1/012028.

Повний текст джерела

Анотація:

Abstract With the application and popularization of distributed power supply and power electronic equipment in power grid, AC distribution is faced with problems such as low efficiency and low power quality. At the same time, due to the advantages of large power supply capacity, long power supply radius, high efficiency, good controllability and adaptability to renewable energy access, DC power distribution has become a crucial development direction of the future distribution system. Reasonable and systematic analysis of power quality problems of DC distribution network plays an important role in its construction and application. Firstly, this paper introduces the background, significance and status of the research on DC distribution network and its power quality. Then introduces the three main topology of DC distribution network structure and connection mode. After selecting pseudo bipolar structure to build the simulation circuit, the power quality phenomena such as voltage sag are simulated and analyzed by PSCAD. The results obtained are consistent with theoretical analysis.

Стилі APA, Harvard, Vancouver, ISO та ін.

39

Papaika, Yu A., O. H. Lysenko, Ye V. Koshelenko, and I. H. Olishevskyi. "Mathematical modeling of power supply reliability at low voltage quality." Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu, no. 2 (2021): 97–103. http://dx.doi.org/10.33271/nvngu/2021-2/097.

Повний текст джерела

Анотація:

Purpose. Finding dependence between reliability indexes and power quality. Working out methodology for calculation of reliability index reduction depending on poor power quality based on found dependency. Methodology. The method of harmonic analysis, the principle of superposition for instantaneous power and the methods of the theory of electric machines. The research objects are distribution processes, processes of transformation, transmitting and consumption of electrical energy in power systems of 6 and 0.4 kV with non-sinusoidal voltage in it. The subjects of the research are reliability indexes of separate power supply system units and its dependency of indexes of electromagnetic compatibility. Findings. Scientific explanation of equipment reliability index reduction depending on poor power quality in power system. Detection of the effect of non-sinusoidal voltage on the reliability of transformers and cable lines. Originality. The article analyzes the problems of electricity quality at the moment and describes the importance of solving these problems. The solutions are mainly based on the change in the level of harmonics affecting the power grids, thus improving the quality of electricity. In the work, the analysis of non-sinusoidal voltage influence on power system units reliability indexes is conducted based on typical city power supply scheme. Practical value. Finding of regularities of electromagnetic processes flaws in power system units of 6 and 0.4 kV depending on non-sinusoidal voltage level. Based on researched regularities, the process of reliability index change should be described depending on power quality. The research is conducted for such power system elements as transformers and cable lines. Based on the research, the characteristics of power system units reliability index change are built depending on the load level.

Стилі APA, Harvard, Vancouver, ISO та ін.

40

Modesto, Rodrigo Augusto, Sérgio Augusto Oliveira da Silva, and Azauri Albano Júnior. "Power quality improvement using a dual unified power quality conditioner/uninterruptible power supply in three‐phase four‐wire systems." IET Power Electronics 8, no. 9 (September 2015): 1595–605. http://dx.doi.org/10.1049/iet-pel.2014.0734.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

41

Zhang, Qin Ling, Lei Liu, and Xu Jiang. "Design and Power Supply‘s Quality Analysis of the Automatic Power Distribution System Based on SSPC." Advanced Materials Research 712-715 (June 2013): 1787–91. http://dx.doi.org/10.4028/www.scientific.net/amr.712-715.1787.

Повний текст джерела

Анотація:

In complex and severe electromagnetic environment with more electric aircraft (MEA) and aircraft missions diversity, the power supply quality analysis and its corresponding circuit design is a key technology for the design of automatic power distribution system on airborne platform. By analyzing the structure and the characteristics of automatic power distribution system and its executive component – SSPC, this paper improves the power supply quality through paralleling RC circuit to MOSFET to absorb current shock and voltage fluctuation,and gives the calculating method of the RC components. By experiments with principle prototype, it is verified that the method can reduce the dynamic voltage fluctuation of the power supply system.

Стилі APA, Harvard, Vancouver, ISO та ін.

42

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.

Повний текст джерела

Анотація:

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.

Стилі APA, Harvard, Vancouver, ISO та ін.

43

Feng, Ding, Hengkai Zhu, Xiaojun Sun, and Sheng Lin. "Evaluation of power supply capability and quality for traction power supply system considering the access of distributed generations." IET Renewable Power Generation 14, no. 18 (December 2020): 3644–52. http://dx.doi.org/10.1049/iet-rpg.2020.0120.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

44

S., NARASIMHA, and B. JHANSI RANI. "DESIGN AND DEVELOPMENT OF SMART POWER MODULE FOR RELIABLE POWER SUPPLY WITH POWER QUALITY FEATURE." i-manager's Journal on Power Systems Engineering 6, no. 2 (2018): 37. http://dx.doi.org/10.26634/jps.6.2.15107.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

45

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.

Повний текст джерела

Анотація:

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.

Стилі APA, Harvard, Vancouver, ISO та ін.

46

Metra, C., L. Schiano, and M. Favalli. "Concurrent detection of power supply noise." IEEE Transactions on Reliability 52, no. 4 (December 2003): 469–75. http://dx.doi.org/10.1109/tr.2003.821937.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

47

Antonenkov, D. V., E. A. Biketova, V. R. Kiushkina, and D. B. Solovev. "Climate Impacts on Quality of 6 kV Overhead Lines Operating at Mining Companies." IOP Conference Series: Earth and Environmental Science 988, no. 2 (February 1, 2022): 022001. http://dx.doi.org/10.1088/1755-1315/988/2/022001.

Повний текст джерела

Анотація:

Abstract Technological innovation in the mining industry involves the extensive use of new high-power, energy-intensive, and high-performance mining machinery that should be reliable in its operation. The key mining company equipment includes mining excavators, drilling rigs, crushing and screening units, and mine drainage facilities. Providing the fault-free power supply and the efficient operation of the electrical infrastructure of a mining company is a priority, and it depends on the quality of the power supply system and its elements. Power supply system failures reduce the operational efficiency of mining machinery, processing sections, and the mining company as a whole, which results in reduced power consumption, uneven loading schedule, failures to meet the output plans, and increased prime costs for the products. The analysis of the electrical infrastructure power supply system at a mining company shall help us assess the quality of operations and their efficiency and develop actions to reduce the idle times of electrical equipment, provide uninterrupted power supply and plan the activities of the mining company in the wholesale electrical power market more accurately.

Стилі APA, Harvard, Vancouver, ISO та ін.

48

Guo, Yan Yan, Xiao Yan Chen, and Yong Zheng Yang. "A Low Noise Power Design for Electrical Impedance Tomography System." Applied Mechanics and Materials 670-671 (October 2014): 1159–62. http://dx.doi.org/10.4028/www.scientific.net/amm.670-671.1159.

Повний текст джерела

Анотація:

This paper describes a quality power module design for Biological Electrical Impedance Tomography (BEIT) system based on FPGA. As the electrical signals on the boundary of subject are too weak to measure effectively, it is essential to design a data acquisition system with high SNR and extremely low noise. This paper is focus on the power module design because the quality of the power module impacts the performance of the data acquisition system directly. The BEIT system needs several kinds of power supply to work effectively, such as 12V, 5V. In this paper, the power module is supplied by DC18V, using Buck-type DC/DC and LDO technologies, a set of independent power supply scheme is carried out, and provides stability and low noise power sources. The expected powers with ripple less than 20mV are achieved, which can preferably meet the BEIT system power supply requirements.

Стилі APA, Harvard, Vancouver, ISO та ін.

49

Li, En, Baocheng Xie, and Yongqiu Chen. "Recent Patents about Pulse Power Supply of EDM." Recent Patents on Mechanical Engineering 13, no. 1 (February 12, 2020): 24–34. http://dx.doi.org/10.2174/2212797612666191127100146.

Повний текст джерела

Анотація:

Background: Electrical Discharge Machining (EDM) technique is an effective and reliable method for machining difficult-to-cut materials with complex shapes. Pulse power supply, a core component of the EDM machine tool, plays a major role in the processing efficiency and processing quality. Thus, more and more attention has been paid to the power types and control methods of pulse power supplies of EDM at present. Objective: To meet the increasing requirement of processing efficiency and processing quality of EDM, the power types and control methods of pulse power supplies are enhanced constantly. Methods: This paper sketches out various current representative patents relevant to the power types and control methods of pulse power supplies of EDM. Results: Through comparing the characteristics of the power types and control methods of pulse power supplies of EDM, the main problems in the present development such as low processing efficiency and poor processing quality are summarized and analyzed. Utilization and conservation of electric energy is also a concern. In addition, the further development tendency towards the power types and control methods of pulse power supplies of EDM is discussed. Conclusion: The optimization and development of the power types and control methods of pulse power supplies of EDM are beneficial to solve the problems of processing efficiency, processing quality and energy utilization in EDM. More interrelated patents on the pulse power supply of EDM will be invented later.

Стилі APA, Harvard, Vancouver, ISO та ін.

50

Do, Thanh Lich. "Research, assessment and proposals on resolving power quality problem for the power supply system of Lam Dong alumina refinery, Vietnam." Gornye nauki i tekhnologii = Mining Science and Technology (Russia) 6, no. 2 (July 14, 2021): 121–27. http://dx.doi.org/10.17073/2500-0632-2021-2-121-127.

Повний текст джерела

Анотація:

Alumina production is rather complex technological process of processing mineral raw materials that requires development of effective technological solutions, including in terms of efficiency of using electric energy. The paper is devoted to studying the power supply system of an alumina refinery inLam Dong Province,Vietnam. The tasks that need to be solved for improving the power quality in the power supply system were analyzed. It was shown that non-linear loads significantly degrade the power quality that in turn leads to equipment damage, malfunction and decreasing the refinery productivity. Models of the refinery power supply system were developed and, using which, the quality of power was assessed at the 6 kV voltage utility bus of the power supply system, as well as at the 6 kV and 0.4 kV buses of distribution substations of individual refinery’s subdivisions. Analysis of the simulation findings showed that the nonlinear loads lead to significant distortions of sinusoidal forms of voltages and currents, and decreasing the power factor. Based on the simulation results, it was concluded that voltage harmonics and current harmonics at nonlinear load at the low voltage buses of 0.4 kV and at the buses of 6 kV exceed the permissible limits of the harmonics in accordance with IEEEST519-1992 international standard. Proposals were developed for improving the power quality in the refinery power supply system. For suppressing higher harmonics of current and voltage, it was recommended to use special power quality regulators in the alumina refinery power supply system. It was proposed to use active harmonic filters as the power quality regulators. The proposed solutions allowed obtaining practically sinusoidal forms of voltages and currents in the alumina refinery power supply system.

Стилі APA, Harvard, Vancouver, ISO та ін.

Статті в журналах з теми "Power supply quality"

Оформте джерело за APA, MLA, Chicago, Harvard та іншими стилями