中国煤炭
中國煤炭
중국매탄
CHINA COAL
2013年
9期
70-72
,共3页
越级跳闸%短路电流%纵联式保护%整定
越級跳閘%短路電流%縱聯式保護%整定
월급도갑%단로전류%종련식보호%정정
override trip%shortGcircuit current%longitudinal differential protection%setting
对井下高压电网越级跳闸引起的大面积停电原因进行了分析，提出将保护升级为纵联式保护以解决问题，并结合煤矿供电系统实际，采用信息化光缆进行信号传输，彻底解决井下高压电网的越级跳闸问题。
對井下高壓電網越級跳閘引起的大麵積停電原因進行瞭分析，提齣將保護升級為縱聯式保護以解決問題，併結閤煤礦供電繫統實際，採用信息化光纜進行信號傳輸，徹底解決井下高壓電網的越級跳閘問題。
대정하고압전망월급도갑인기적대면적정전원인진행료분석，제출장보호승급위종련식보호이해결문제，병결합매광공전계통실제，채용신식화광람진행신호전수，철저해결정하고압전망적월급도갑문제。
This article analyzed the large area blackout caused by grid transmission system's override trip in the underground. Longitudinal differential protection solutions have been proG posed.In view of the actual coal mine power supply systems,information cable has been adapted to do signal transmission,which solved grid transmission system's override trip.
