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{"title":"Table-Lookup Estimation of Overvoltages at 275 kV Gas-Insulated Switchgears","authors":"Takashi Yamamoto, Toshihiro Tsuboi, Yoshihiro Baba","doi":"10.1002/tee.70235","DOIUrl":null,"url":null,"abstract":"<p>The lightning impulse withstand voltage (LIWV) of electric power equipment in substations has been determined and specified on the basis of lightning surge analyses. The lightning surge analysis needs a huge computation time and considerable expertise. In order to simplify the LIWV estimation, a table-lookup method based on parametric analyses of lightning surges conducted in advance was proposed for 275-kV transformers. In this study, lightning surge analyses of a 275-kV substation with gas-insulated switchgears (GISs) have been carried out to create a lookup table for estimating the LIWV of a 275-kV GIS. Evaluations for the correlation between parameters and required LIWV have been shown, and examples to use the table-lookup estimation have also been explained. © 2025 Institute of Electrical Engineers of Japan and Wiley Periodicals LLC.</p>","PeriodicalId":13435,"journal":{"name":"IEEJ Transactions on Electrical and Electronic Engineering","volume":"21 8","pages":"1179-1184"},"PeriodicalIF":1.0000,"publicationDate":"2026-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEJ Transactions on Electrical and Electronic Engineering","FirstCategoryId":"5","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/tee.70235","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/12/22 0:00:00","PubModel":"Epub","JCR":"Q4","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
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Abstract
The lightning impulse withstand voltage (LIWV) of electric power equipment in substations has been determined and specified on the basis of lightning surge analyses. The lightning surge analysis needs a huge computation time and considerable expertise. In order to simplify the LIWV estimation, a table-lookup method based on parametric analyses of lightning surges conducted in advance was proposed for 275-kV transformers. In this study, lightning surge analyses of a 275-kV substation with gas-insulated switchgears (GISs) have been carried out to create a lookup table for estimating the LIWV of a 275-kV GIS. Evaluations for the correlation between parameters and required LIWV have been shown, and examples to use the table-lookup estimation have also been explained. © 2025 Institute of Electrical Engineers of Japan and Wiley Periodicals LLC.
275kv气体绝缘开关设备过电压的表查找估计
在分析雷电浪涌的基础上，确定并规定了变电站电力设备的耐雷击电压。雷电浪涌分析需要大量的计算时间和大量的专业知识。为了简化LIWV的估计，提出了一种基于预先进行的雷击浪涌参数分析的查找表方法。在本研究中，对一个275千伏气体绝缘开关设备（GISs）的变电站进行了雷击浪涌分析，以创建一个查找表，用于估计275千伏地理信息系统的LIWV。已经展示了参数和所需LIWV之间的相关性的评估，并且还解释了使用表查找估计的示例。©2025日本电气工程师协会和Wiley期刊有限责任公司。
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