Results 121 to 130 of about 954 (262)

Leakage Current Analysis of Polymer and Porcelain Housed Metal Oxide Surge Arresters in Humid Ambient Conditions

Iranian Journal of Electrical and Electronic Engineering, 2015
This paper aims to measure and analyze of the leakage current of 20 kV polymer and porcelain metal oxide surge arresters under humid ambient conditions by applying different voltages to the arresters terminal.
K. Mokhtari, M. Mirzaie, M. Shahabi
doaj  

Staging concept for aging management: Definition, mechanism, and coping strategies

VIEW, EarlyView.
We divided the overall aging stage into “pre‐aging”, “aging compensation”, and “aging disability”. For each stage, we delineate the clinical presentations, biological phenomena, theoretical underpinnings, and key management priorities. Abstract Aging, as a gradual and largely irreversible biological process, characterized by declining organismal ...
Zhonghan Wang, Shixian Liu, Shangyu Du, Xiangran Cui, Bo Chao, Minglei Liu, Minfei Wu   +6 more
wiley   +1 more source

Thermal image and leakage current diagnostic as a tool for testing and condition monitoring of ZnO surge arrester

, 2013
This paper presents a study proposing a method to assess the condition of metal-oxide surge arresters. Thermal data using thermal imaging as well as the leakage current third harmonic component were used as tools to investigate the surge arrester aging ...
Shangkari a/p Rajan
core  

Condition monitoring on surge arrester using improvised Metal Oxide Surge Arrester Intelligent Monitoring System [PDF]

, 2014
A tool for condition monitoring for Metal Oxide Surge Arrester (MOSA) has been developed in Labview. The software (MOSAIMS) runs in Microsoft Windows operating system and features a user friendly graphic interface.
Ramanathan, Haribalan
core  

New criteria for metal oxide surge arrester condition monitoring based on leakage current analysis: Considering non‐uniform pollution effect

IET Generation, Transmission & Distribution
The role of surge arresters is vital in power systems' protection against transient overvoltages, which can arise due to occurrences like lightning strikes or switching operations.
Masume Khodsuz, Mohammad Hossein Teymourian, Seyyedmeysam Seyyedbarzegar   +2 more
doaj   +1 more source

Mechanism of Quasi‐Power‐Frequency Resonant Overvoltage Triggered by Multiple Lightning Strikes in High‐Voltage Alternating Current Systems Equipped With Shunt Reactor

High Voltage, EarlyView.
ABSTRACT This paper investigates the generation mechanism of quasi‐power‐frequency resonant overvoltage triggered by multiple lightning strikes in high‐voltage alternating current (HVAC) systems equipped with shunt reactors. Based on field measurements from a 500 kV AC system, equivalent and simplified circuit models have been established to analyse ...
Tao Liang, Tao Cui, Zhengxi Wang, Tongwei Guo, Xiaohui Wu, Hong Zeng, Jie Guo, Yanzhao Xie   +7 more
wiley   +1 more source

Sensing surface contamination of Metal Oxide Surge Arrester through resistive leakage currentsignal analysis by Mathematical Morphology

, 2020
Sensing surface contamination of Metal Oxide Surge Arrester through resistive leakage currentsignal analysis by Mathematical ...
Banibrata Ghosh (13060977), Sovan Dalai (21155075), Arup Kumar Das (21155081), Biswendu Chatterjee (21155078)   +3 more
core  

Optimisation of zinc oxide surge arrester design using gravitational search algorithm and imperialist competitive algorithm

, 2019
Reducing electric field stress near the energised end of surge arresters is very important because it may increase the lifetime of the highly stressed ZnO column in vicinity of the high voltage electrode.
Syahirah Abd Halim, Afida Ayob, Abu Bakar, Ab Halim, Mohamed, Azah, Ayob, Afida, Illias, Hazlee Azil, Nor Azwan Mohamed Kamari, Ab Halim Abu Bakar, Abd Halim, Syahirah, Azah Mohamed, Hazlee Azil Illias, Mohamed Kamari, Nor Azwan   +11 more
core   +2 more sources

Evaluation of the efficacy of transient overvoltages suppression measures in different wind farm topologies using SF6 circuit breaker. [PDF]

Sci Rep, 2023
Eliyan T, Wadie F.
europepmc   +1 more source

Comprehensive Design and Experimental Validation of 30 kV Ultra‐Fast Flexible Controllable Arresters for HVDC Systems

High Voltage, EarlyView.
ABSTRACT To effectively suppress transient overvoltages in HVDC systems, the design and experimental validation of a multi‐module series controllable arrester are presented. The voltage‐limiting performance, series voltage equalisation capability, and robustness under fault conditions in high‐voltage scenarios require further research.
Tai Yang, Xiangyu Zhang, Sihang Wu, Lei Qi, Xiang Cui   +4 more
wiley   +1 more source