短路试验法校验500kV自耦变压器套管CT电流计算
Study on Current Calculation Method for 500 kV Autotransformer Bushing Current Transformers During Short-Circuit Testing Verification
许庆超1
作者信息
摘要
通过分析大型自耦变压器验收过程中套管CT电流的幅值和相位,介绍了一种利用变压器铭牌参数计算套管CT在短路试验中电流的方法.同时,以某变电站自耦变压器套管 CT 的验收为例,对所提出的方法进行了分析和验证,可为变电专业工程人员验收自耦变压器套管CT提供借鉴.
Abstract
This paper reports a method for calculating the current of bushing current transformer(CT)during short-cir-cuit tests by using nameplate parameters of a large self-coupling transformer.The method is demonstrated and validated through a case of pre-acceptance examination of bushing CT in an actual substation.This paper contains helpful informa-tion for relevant professionals in conducting pre-acceptance examination of bushing CT.
关键词
自耦变压器/套管CT/短路试验法/等效电路Key words
autotransformer/bushing current transformer/short-circuit test method/equivalent circuit引用本文复制引用
出版年
2024
NETL
NSTL
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