短路试验法校验500 kV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

作　　者：许庆超 XU Qingchao(Guangzhou Power Supply Bureau,Guangzhou 510000,China)

机构地区：[1]广州供电局,广东广州510000

出　　处：《电工技术》2024年第6期139-141,共3页Electric Engineering

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。This paper reports a method for calculating the current of bushing current transformer(CT)during short-circuit 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 information 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 

分 类 号：TM11[电气工程—电工理论与新技术]