电器与能效管理技术Issue(2)：28-32,38,6.DOI:10.16628/j.cnki.2095-8188.2024.02.005
Mayr电弧模型下GIS中快速暂态过电压的仿真分析
Simulation Analysis of Fast Transient Overvoltage in GIS Under Mayr Arc Model
摘要
Abstract
When the disconnector in SF6 gas insulated switchgear(GIS)is used to open and close the busbar,a very fast transient overvoltage(VFTO)with high amplitude and extremely fast rise rate is generated,which threats the insulation of GIS and adjacent equipment.The testing circuit of an 800 kV GIS disconnector switching on and off busbar is selected as the research object.The electromagnetic transient program(EMTP/ATP)is used for modeling and simulating,the Mayr arc model is used when the disconnector is ignited,and its influence on VFTO is analyzed.The voltage waveforms of the disconnector,circuit breaker side disconnector and transformer side disconnector considering the Mayr arc model are obtained,compared with the VFTO considering the time-varying resistance model.Discrete Fourier analysis of VFTO waveform is carried out to obtain the variation characteristics of overvoltage frequency and amplitude,and the research results provide a reference for GIS insulation design.关键词
SF6气体绝缘封闭组合电器(GIS)/快速暂态过电压(VFTO)/Mayr电弧模型/傅里叶分析Key words
SF6 gas insulated switchgear(GIS)/very fast transient overvoltage(VFTO)/Mayr arc model/Fourier analysis分类
信息技术与安全科学引用本文复制引用
杨帆,高有华..Mayr电弧模型下GIS中快速暂态过电压的仿真分析[J].电器与能效管理技术,2024,(2):28-32,38,6.
