Results 21 to 30 of about 10,217 (226)
IEEE Access, 2021 In this study, a LCC-VSC hybrid HVDC transmission system was taken as an example. The valve and neutral overvoltage of the hybrid HVDC system were simulated and then calculated at the VSC converter station by installing a blocking diode and a DC circuit ...
Wang Dongju, Zhou Hao
doaj +1 more source
Transactions of The Electrochemical Society, 1938 The overvoltage of hydrogen was measured on platinum, silver, copper, gold, tin, iron, zinc, lead, and nickel ; likewise the overvoltage of oxygen on platinum and on gold in potassium hydroxide solutions. Colloidal metal, if present in the electrolyte, changed the overvoltage. Rotating the electrode decreased the overvoltage.
Herschel Hunt +2 more
openaire +1 more source
Insulator fault feature extraction system of substation equipment based on machine vision
IET Networks, EarlyView., 2022 Abstract The artificial intelligence technology and intelligent automation are more and more widely used, the insulators play a supporting and insulating role in the operation of the grid. The use of machine vision inspection technology to detect insulator faults has become an inevitable trend of the times.
Keruo Jiang +4 more
wiley +1 more source
IEEE Access, 2021 The emergence of fast-switching wide-bandgap (GaN, SiC) power electronics devices has enabled motor drive systems to achieve high efficiency, power density, control bandwidth and high-level of integration.
Yipu Xu +6 more
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Evaluation of lightning overvoltage at neutral point of HVDC converter transformer based on EMTP
Energy Reports, 2022 In order to ensure the safe and stable operation of high voltage direct current (HVDC) systems, this paper studies the lightning overvoltage at the neutral point of the HVDC converter transformer.
Zhe Hu +4 more
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Energy Reports, 2023 Overvoltage is a critical problem of Thailand’ distribution system. The electrical protection device in the distribution system needs to be able to support this level of overvoltage.
Chaiyaporn Lothongkam +2 more
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PROTECTION OF 35 KV OVERHEAD TRANSMISSION LINE FROM THE INDUCED LIGHTNING OVERVOLTAGE
Elektrotehnìka ta Elektroenergetika, 2018 Purpose. Develop recommendations for determining the optimal places for the installation of nonlinear overvoltage limiters for the protection of overhead transmission lines from the influence of lightning overvoltage on the basis of the model of the ...
V. V. KYRYK, S. A. ABDULAIEV
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Influence of the VSC-HVDC System Structure on the Overvoltage of Single-Pole Grounding Fault
Zhongguo dianli, 2021 Flexible operation mode is one of the VSC-HVDC system’s advantages, and the power system may continue to operate in the future with different grid structures under maintenance and other working conditions.
Jialing WU, Tiebing LU
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Protection against lightning and overvoltage
, 2005 Tato bakalářská práce se zabývá ochranou technických prostředků pro ochranu majetku před bleskem a přepětím. V práci jsou uvedeny legislativní podmínky pro použití přepěťových ochran.
Horák, Martin
core +2 more sources