电力系统保护与控制
電力繫統保護與控製
전력계통보호여공제
POWER SYSTM PROTECTION AND CONTROL
2015年
15期
132-136
,共5页
杨浚文%朱余启%姚勇%黄宋波%王珍意
楊浚文%硃餘啟%姚勇%黃宋波%王珍意
양준문%주여계%요용%황송파%왕진의
断路器%闭锁分合闸%缺陷处理%实例分析%调度运行
斷路器%閉鎖分閤閘%缺陷處理%實例分析%調度運行
단로기%폐쇄분합갑%결함처리%실례분석%조도운행
breaker%open-close blocked%defect treatment%case analysis%dispatching operation
断路器闭锁分合闸是调度运行中会遇到的一类重大缺陷。该缺陷若不及时处理,在电网发生故障时可能扩大停电范围,甚至造成系统运行失稳风险。首先对断路器闭锁分合闸前后的系统运行极限进行了对比分析,表明断路器闭锁分合闸后电网已进入紧急状态,需对相关断面进行潮流控制。然后对一些典型接线方式下断路器闭锁分合闸的如何处理进行讨论,提出在不能带电处理情况下,典型接线方式下隔离处理闭锁断路器的方法。最后对断路器隔离处理期间的风险进行了分析,提出相关防控要求,避免处理过程中再发生N-1故障导致局部电网解列或系统失稳。
斷路器閉鎖分閤閘是調度運行中會遇到的一類重大缺陷。該缺陷若不及時處理,在電網髮生故障時可能擴大停電範圍,甚至造成繫統運行失穩風險。首先對斷路器閉鎖分閤閘前後的繫統運行極限進行瞭對比分析,錶明斷路器閉鎖分閤閘後電網已進入緊急狀態,需對相關斷麵進行潮流控製。然後對一些典型接線方式下斷路器閉鎖分閤閘的如何處理進行討論,提齣在不能帶電處理情況下,典型接線方式下隔離處理閉鎖斷路器的方法。最後對斷路器隔離處理期間的風險進行瞭分析,提齣相關防控要求,避免處理過程中再髮生N-1故障導緻跼部電網解列或繫統失穩。
단로기폐쇄분합갑시조도운행중회우도적일류중대결함。해결함약불급시처리,재전망발생고장시가능확대정전범위,심지조성계통운행실은풍험。수선대단로기폐쇄분합갑전후적계통운행겁한진행료대비분석,표명단로기폐쇄분합갑후전망이진입긴급상태,수대상관단면진행조류공제。연후대일사전형접선방식하단로기폐쇄분합갑적여하처리진행토론,제출재불능대전처리정황하,전형접선방식하격리처리폐쇄단로기적방법。최후대단로기격리처리기간적풍험진행료분석,제출상관방공요구,피면처리과정중재발생N-1고장도치국부전망해렬혹계통실은。
The open-close block of breaker is one of the serious defects in power dispatching. It may expand the range of outage and even cause power system instability after fault if not be treated in time. Analysis on system sending limitation before and after the open-close blocked of breaker is proposed to prove power grid has been operated into the state of emergency and power flow of the corresponding transmission section should be limited. Discussion on treatment of open-close blocked breaker in typical connection modes without outage of equipment is presented. Finally, risk analysis during the isolation of breaker is proposed and the corresponding prevention and control requirements are introduced to avoid local grid islanding or system instability after N-1 fault during defect treatment.