Results 61 to 70 of about 2,095 (173)
Detection of failures in HV surge arrester using chaos pattern with deep learning neural network
IET Science, Measurement &Technology, Volume 18, Issue 9, Page 603-615, November 2024.This paper proposes a fault diagnosis method for HV surge arresters based on the chaotic system and CNN. Compared to AlexNet, HOG+BPNN, HOG+SVM, HOG+DT, and HOG+KNN detection methods, the accuracy of the method proposed in this paper is 97%. Abstract As a protective component of HV equipment, the primary function of a surge arrester is to mitigate the ...
Chun‐Chun Hung +3 more
wiley +1 more source
Influence of Intrinsic Trapping on The Performance Characteristics of ZnO-Bi 2 [PDF]
, 1994 The lumped parameter/complex plane analysis technique reveals several contributions to the ac small-signal terminal immittance of the ZnO-Bi2O3 based varistors' grain-boundary response.
Mohammad A. Alim
core +2 more sources
IET Generation, Transmission &Distribution, Volume 18, Issue 14, Page 2397-2405, July 2024.The damped alternating current (DAC) testing system has emerged as an effective tool for inducing partial discharge (PD) events. This research contributes to the development of more efficient and affordable DAC generation technology for power cable testing applications.
Li Wang +3 more
wiley +1 more source
基于经验傅里叶分解的混合式高压直流断路器耗能支路故障检测方法研究 [PDF]
全球能源互联网为实现更强的能量耗散能力，混合式高压直流断路器的耗能支路需串并联大量金属氧化物压敏电阻（metal oxide varistor，MOV），耗能支路的可靠性将直接影响混合式高压直流断路器的可靠性。但是，现有的耗能支路故障检测方法并不能适应整个能量耗散阶段。为此，提出一种基于经验傅里叶分解的混合式高压直流断路器耗能支路故障检测方法，具体为：首先是信号预处理，对耗能支路每个子模块的分支电流进行归一化和一阶差分计算来获取分析电流；然后是故障特征提取，利用经验傅里叶分解（empirical Fourier ...
彭兆伟 +5 more
doaj +1 more source
Rural Facility Electric Power Quality Enhancement [PDF]
, 1991 Electric power disturbances are known to be more prevalent in small, isolated power systems than in larger interconnected grids which service most of the United States. This fact has given rise to a growing concern about the relative merits of different
Aspnes, J.D. +3 more
core
Impact of converter interface type on the protection requirements for DC aircraft power systems [PDF]
, 2012 The utilization of converter interfaces has the potential to significantly alter the protection system design requirements in future aircraft platforms.
Burt, Graeme +3 more
core +1 more source
Research of simulation and experiment on arc characteristics of gas mechanical switch
High Voltage, Volume 9, Issue 3, Page 626-635, June 2024.Abstract An arc is the high‐temperature discharge plasma produced in the opening process of mechanical switches, which directly affects the breaking capability of a hybrid DC circuit breaker. According to the physical mechanism of an electric arc, the construction of an arc model for simulation analysis is an important technical means in the electrical
Cheng Jiang +7 more
wiley +1 more source
IET Generation, Transmission &Distribution, Volume 18, Issue 7, Page 1325-1342, April 2024.This study proposes an optimal approach to improve the quality of a weak electrical power distribution system using thyristor‐controlled series capacitors (TCSC). The approach considers components like shunt capacitors and distributed generators, which are influenced by weather conditions.
Mohamed Abd‐El‐Hakeem Mohamed +2 more
wiley +1 more source
A new technicque for metal oxide surge arresters failure diagnostic using return voltage measurement [PDF]
, 2009 Due to their reliability and accuracy, many modern diagnostics based on dielectric voltage response, such as polarization/depolarization current (PDC), voltage decay (VD) and return voltage (RV) measurements, have been used in monitoring ageing processes
Abdul Malek, Zulkurnain
core
Active and Passive Electronic Components, Volume 2024, Issue 1, 2024.DC technologies constitute essential components within the scope of DC distribution networks. All DC networks confront inherent threats, such as DC short‐circuit faults, necessitating robust protective measures. Utilizing DC circuit breakers (DCCBs) emerges as a pivotal strategy for safeguarding these networks.
Sabah Daniar +2 more
wiley +1 more source