Characteristics of Overvoltages in 500 kV Gas-Insulated Switchgears Caused by Multiple Direct Lightning Strokes

IF 1 4区工程技术 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEJ Transactions on Electrical and Electronic Engineering Pub Date : 2026-08-09 Epub Date: 2026-01-21 DOI:10.1002/tee.70254

Yamamoto Takashi, Tsuboi Toshihiro, Baba Yoshihiro

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引用次数: 0

Abstract

Generally, lightning protection design for a substation has been mainly based on the lightning overvoltage caused by a back flashover occurring at a transmission tower near a substation. It has been reported that electrical breakdown occurred between the moving and fixed contacts of a 500-kV gas circuit breaker (GCB) because of multiple direct lightning strokes. In a previous study, installing an additional lightning surge arrester (SA) close to the GCB was proposed to protect the GCB from steep-front subsequent lightning stroke currents. However, no lightning surge analysis for gas-insulated switchgears (GISs) considering multiple direct lightning strokes has been performed. In order to evaluate the need for countermeasures for GISs against multiple direct strokes, the lightning surge analysis results carried out for a 500-kV GIS are presented in this paper. © 2026 Institute of Electrical Engineers of Japan and Wiley Periodicals LLC.

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500kv气体绝缘开关柜多次直击引起的过电压特性

一般来说，变电站的防雷设计主要是基于变电站附近输电塔发生反闪络引起的雷电过电压。据报道，500千伏气体断路器的动触头和固定触头之间因多次直击雷击而发生电气击穿。在之前的一项研究中，建议在GCB附近安装一个额外的避雷器（SA），以保护GCB免受陡峭锋面后续雷击电流的影响。然而，考虑多重直接雷击的气体绝缘开关设备（GISs）的雷击浪涌分析尚未开展。为了评估GIS系统应对多重直击的必要性，本文介绍了500千伏GIS系统雷电浪涌分析结果。©2026日本电气工程师学会和Wiley期刊有限责任公司。

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来源期刊

IEEJ Transactions on Electrical and Electronic Engineering 工程技术-工程：电子与电气

CiteScore

2.70

自引率

10.00%

发文量

199

审稿时长

4.3 months

期刊介绍： IEEJ Transactions on Electrical and Electronic Engineering (hereinafter called TEEE ) publishes 6 times per year as an official journal of the Institute of Electrical Engineers of Japan (hereinafter "IEEJ"). This peer-reviewed journal contains original research papers and review articles on the most important and latest technological advances in core areas of Electrical and Electronic Engineering and in related disciplines. The journal also publishes short communications reporting on the results of the latest research activities TEEE ) aims to provide a new forum for IEEJ members in Japan as well as fellow researchers in Electrical and Electronic Engineering from around the world to exchange ideas and research findings.