Results 71 to 80 of about 916,905 (189)
The events for prevention of resonant overvoltages in main power electrical networks
Electronics and Communications, 2016 science , pr. Peremogy, 56, с. Kyiv, 03680, Ukraine. The study of the origin of conditions and possible consequences of abnormal modes power electrical networks with extreme values parameters, such as overvoltage, traditionally performed using mathematical models with linear and symmetrical elements.
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The resonance overvoltages in nonsinusoidal modes of extra high voltage transmission lines [PDF]
Electronics and Communications, 2017 Due to the rising role of overhead lines extra high voltage there is a need of application of modern electronic devices that allow controlling modes of bulk electricity system. Durable resonance overvoltage may cause damage of electrical power equipment.
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Frequency and Time Series Analysis of Surge Arrester in Power Distribution Systems [PDF]
Advances in Engineering and Intelligence SystemsSurge arresters are essential protective devices in power systems that redirect excess voltage and prevent damage to sensitive equipment. Extensive research has been conducted in electro-thermal modeling for surge arresters to better understand and ...
Alireza Zabihi, Mohammad Parhamfar
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Mathematical model of corona discharge for assessing impact on resonant overvoltages
Bulletin of the National Technical University "KhPI". Series: Energy: Reliability and Energy EfficiencyУ статті представлено математичну модель коронного розряду, спрямовану на кількісну оцінку його впливу на резонансні перенапруги в повітряних лініях електропередавання надвисокої напруги під час паузи однофазного автоматичного повторного вмикання. Запропоновано математичну модель, в якій корона описується через нелінійну ємність Ccor(V) та нелінійну ...
Volodymyr Kuznetsov +2 more
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, 2014 Актуальность работы: На данном этапе развития сетей стран СНГ приоритетной является проблема повышения надежности работы трансформаторов, основная часть парка которых давно выработала свой ресурс.
Никонец, Алексей Леонидович +3 more
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Известия Томского политехнического университета: Инжиниринг георесурсов, 2019 The relevance of the study. At the present stage of development of CIS countries network the first-priority problem is increase of operation reliability of transformers, the main part of which has been out of date long ago.
Aleksey Nykonets +2 more
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Overvoltage control strategy of series-parallel wind power DC collection system based on RES-CCS
电力工程技术Wind power DC collection system can effectively solve the harmonic resonance problems of AC collection system, and the series-parallel topology can effectively reduce the system cost compared with other structures, so it is very important to study the ...
Luwen FAN +4 more
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Photovoltaic system overvoltage protection
, 2011 This paper deals with overvoltage protection strategy and methods for photovoltaic systems as renewable energy source. It describes some sample circuit connection with overvoltage protection devices and some overvoltage protection device ...
Balogh, Jozef, Petráš, Jaroslav
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IEEE Access, 2019 Aiming at the high-frequency resonance (HFR) and low-frequency oscillation (LFO) phenomena in high-speed railways, a comprehensive suppression method named voltage constant transient active oscillation compensation (VCT-AOC) is proposed.
Xinyu Zhang +3 more
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Research of New Method of Harmonic Elimination of Power Supply System of Mine Industry
Gong-kuang zidonghua, 2012 For problems of poor filtering effect and easily leading to resonance overvoltage and harmonic amplification of existing passive filter, the paper proposed a new method of harmonic elimination based on fundamental resonance principle. The method seriesly
LIAO Qing-hua, YANG Liu-lin, LI Can
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