Results 21 to 30 of about 2,386,087 (130)
IEEE Access, 2020 This article focuses on the problem that the voltage recovery time of relay protection circuits in converter stations is too long under lightning surges.
Yuqi Zhang, Weidong Zhang, Jianfei Ji
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Reduction Reactive Power and Collapse Voltage Using Series Capacitors Compensation in Sudden Change Loads of Transmission Lines [PDF]
Engineering and Technology Journal, 2012 The continuous increase of disturbances on the interconnected electric power system resulting in its inability to reliably meet demands. This paper presents an application of a series capacitor compensation in transmission line and shunt reactors ...
Hussein Thani Rishag
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Frontiers in Energy Research, 2023 Series-compensated transmission lines (SCTLs) are increasingly preferred for transmitting bulk amounts of electricity generated from the present-day large-scale wind farm to the utility grid due to several technical and economic benefits. However, when a
M. S. Prabhu +4 more
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Experimental studies on the use of MOV in transformer windings inner protection
, 2005 This paper presents experimental investigations into the principle, connection schemes, and the use of a metal oxide varistor (MOV) in transformer winding inner protection. Experiments have been carried out on model transformer and on practical extremely
Zhou, Chengke, Yuanfang, Wen
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Gaoya dianqi, 2023 金属氧化物压敏电阻（metal oxide varistor,MOV）广泛应用于各种直流断路器中，用于抑制过电压、系统能量耗散与开断电压建立。受目前加工工艺限制，单MOV阀片通流能力有限，故断路器中多采用多柱并联结构。柱间电流分配不均会导致局部阀片超负荷耗能，造成开断失败甚至设备损坏。文中基于实验测量建立了一种直流开断工况下的MOV电气模型，基于该模型提出了MOV阀片均流选配方法。经实验验证，传统基于雷电冲击测试方法选配的MOV在直流开断工况的均流特性不能完全满足要求 ...
龙辰 +7 more
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Two basic ways to realise DC circuit breakers
The Journal of Engineering, 2019 As a key element of the DC grid, the technology of DC circuit breakers (DCCBs) still have difficulty to be widely used due to its large cost and volume. This paper studies the basic principle and its realisation methods for DCCBs.
Zheng Xu +3 more
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IET Generation, Transmission &Distribution, Volume 20, Issue 1, January/December 2026.A new evolutionary search algorithm based on improved Particle Swarm Optimisation (PSO) is introduced in this study to estimate the phasor. The performance has been evaluated through extensive simulations considering transient components, harmonics, and frequency changes in noiseless and noisy conditions.
Seyedeh Mina Abed Shiadeh +2 more
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A Self‐powered LVDC Solid‐State Circuit Breaker Using Low Voltage Step‐Up DC/DC Converter
IET Power Electronics, Volume 19, Issue 1, January/December 2026.This paper introduces a self‐powered LVDC solid‐state circuit breaker that harvests the forward drop of a Schottky diode via an ultra‐low voltage step‐up converter, eliminating the need for an auxiliary supply. A parallel MOSFET‐SCR conduction path and a Hall‐effect‐based electromagnet enable autonomous fault detection and tripping for both fast and ...
Dewan Mohammad Asad +3 more
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Performance comparison between Metal Oxide Varistor and Gas Discharge Tube against transient overvoltage due to lightning strike: article [PDF]
, 2014 This project presents the comparison of the performance protection devices of transient overvoltage due to lightning strike. There were two protection devices compared in this project which is Metal Oxide Varistor (MOV) and Gas Discharge Tube (GDT ...
Johari, Dalina, Ajut, Lawrence
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Journal of the American Ceramic Society, Volume 109, Issue 1, January 2026.Abstract Microstructure homogeneity and grain size reduction are needed to ensure the current uniformity and reliability required in metal oxide varistors for DC circuit breakers. Cold sintering (CS)–a low‐temperature digestive liquid and high‐pressure densification process–has previously shown reduced grain growth, but it is not clear how the lower ...
Kayla Y. Chuong +5 more
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