摘要
三沪直流输电工程华新换流站的站用交流辅助电源系统,配置了1台500/10 kV站用变压器。其主保护针对不同的接线形式,均可以采用引线差动和变压器差动相结合的配置方式。为了确保电流互感器的可靠工作,电流互感器的变比既不能选得太小,又不能选得太大。这些特点可供特高压直流输电工程的站用变压器保护配置借鉴。
The auxiliary AC power supply system at Huaxin Converter Station of Three-Gorge to Shanghai DC transmission project has equipped with a 500/10 kV auxiliary transformer. Its main protection can adopt combined configuration of lead differential and transformer differential according to different wiring modes. For the purpose of current transformer reliable operation, the transformation ratio should not be too big or too small These characters can be the reference for auxiliary transformer protection configuration of EHV DC transmission projects.
出处
《电力建设》
2007年第12期18-20,共3页
Electric Power Construction
关键词
换流站
500
kv站用变压器
保护配置
电流互感器变比
converter station
500 kV auxil/ary transformer
protection configuration
current transformation ratio
