Ynd11与Dyn11变压器短路电流的一种简便分析方法  

A Simple Analysis Method of Short Circuit Currents in Ynd11 and Dyn11 Transformers

作　　者：梁刚 李能昌 李家汉 张欢 肖闯[1] 骆佳勇 LIANG Gang;LI Nengchang;LI Jiahan;ZHANG Huan;XIAO Chuang;LUO Jiayong(Baihetan Hydropower Plant,China Yangtze Power Co.,Ltd.,Ningnan 615400,China)

机构地区：[1]中国长江电力股份有限公司白鹤滩水力发电厂,四川宁南615400

出　　处：《水电与新能源》2021年第6期1-3,25,共4页Hydropower and New Energy

摘　　要：通过电流在变压器绕组中的传变特性分析,可得出一种简便的变压器短路电流分析方法。由故障侧电流推导出绕组电流,再利用绕组电流推导出非故障侧相电流或线电流的特征,或者根据现场变压器各侧电流特征推断出故障类型及可能的故障点。对一线运行维护人员进行变压器故障性质和保护动作的快速分析与故障排除有重要作用。A simple analysis method of short circuit currents in transformers is proposed based on the analysis of the current transmission characteristics in transformer windings.From the fault side current,the winding currents can be derived.Then,the characteristics of the non-fault side phase current or line current can be obtained.The type of the faults and the possible locations can be determined according to the characteristics of the currents of each side.It could be of great use for the in-situ operation and maintenance personnel to analyze and fix the faults and protection actions of transformers.

关 键 词：Ynd11变压器 Dyn11变压器 短路电流 传变特性 

分 类 号：TM41[电气工程—电器]