主变差动回路的TA二次接线方式探讨  

Discussion of TA Secondary Wiring Mode of Differential Protection of the Transformer

作　　者：潘雪莉[1] 虞小林 江文波[1] 

机构地区：[1]湖北武汉供电公司,湖北武汉430015

出　　处：《湖北电力》2011年第1期1-2,共2页Hubei Electric Power

摘　　要：通过研究锅顶山子站2号主变保护更换后送电过程中主变差动回路接线不正确的现象,分析了主变各侧TA极性和TA回路接线方式、开关和母排与变压器相别一致性等诸多因素对差动保护回路的影响,并对变压器保护的TA极性及其二次接线方式的统一、规范化进行了阐述。By studying the incorrect phenomenon of the differential circuit of the No. 2 main transformer during energizing in Guodingshan substation, after its protection having been changed, the paper analyses many factors which influence the differential protection such as the polarity of CT at each side of the main transformer, wiring mode, the phases consistency of switch and bus, and so on. The CT＇s polarity and wiring mode＇s normalization are mainly emphasized.

关 键 词：电流互感器 二次接线方式 极性 差动回路 

分 类 号：TM774[电气工程—电力系统及自动化] TM452