自耦变压器零序差动保护问题  

DISCUSSION ABOUT ZERO-SEQUENCE CURRENT DIFFERENTIAL PROTECTIONS OF AUTOTRANSFORMER

作　　者：孙集伟[1] 

机构地区：[1]华北电力调度局

出　　处：《电力系统自动化》1999年第11期45-49,共5页Automation of Electric Power Systems

摘　　要：根据自耦变压器的特性，分析了自耦变压器发生区内、区外接地故障时的故障电流，讨论了３种形式的自耦变压器零序差动保护的优、缺点，并提出改进建议。According to the characteristics of autotransformer, the fault current of autotransformer is analyzed when the ground fault happens in and outside of the protected zone. The advantages and disadvantages of three kinds of zero-sequence current differential protections of autotransformer are discussed and some suggestions are given . This paper has something important to improve the application and sensitivity of zero-sequence current differential protection of autotransformer.

关 键 词：自耦变压器 接地故障 差动保护 电力系统 

分 类 号：TM411.307[电气工程—电器] TM77