主变压器差动保护装置电流极性的探讨  

Discussion on Current Polarity of Differential Protection Device for Main Transformer

作　　者：王彦荣[1] 程生戬[1] 徐冰[1] 李延军[1] 

机构地区：[1]北京铁路局石家庄供电段

出　　处：《电气化铁道》2013年第2期1-3,共3页Electric Railway

摘　　要：分析了京石武客专邢台东变电所验收试验中出现的差动保护装置误动原因,提出了用直流法和电流方向法相结合进行电流互感器极性校核的新思路,并用于京石武客专验收试验,收效良好。可供新建高速铁路的验收试验借鉴。During the acceptance testing in Xingtai East traction substation, the author found there was malfunction of differential protection. By the analysis of the caused reason, the article forwarded a method with DC and current direction to test the current transformer＇s polarity. The method used widely in the acceptance test of Beijing - Shijiazhuang - Wuhan High Speed Rail and the result was good. It has reference value to new High Speed Rail traction substation acceptance test.

关 键 词：牵引变电所 差动保护 电流 极性 探讨 

分 类 号：U224.1[交通运输工程—道路与铁道工程]