摘要
介绍了桐柏抽水蓄能电厂大容量发电电动机负序电流保护整定配合,讨论了其在实际运行中存在的问题。针对桐柏电厂机组内桥接线方式下的特点,提出符合系统需求和机组特性的负序电流保护整定改进方案,以满足大容量机组对保护选择性、灵敏性和可靠性的要求。
The negative-phase sequence current protection of large capacity generator/motor unit for Tongbai pumped storage power station （PSPS） is introduced. The related problems existing in practical operation are discussed. In view of the characteristics of internal bridge connection in unit of Tongbai station,an improving scheme of negative phase-sequence current protection which is in accordance with system requirement and unit characteristic is suggested,in order to satisfies the reliability and sensitivity of the protection.
出处
《水电自动化与大坝监测》
2010年第4期31-33,共3页
HYDROPOWER AUTOMATION AND DAM MONITORING
关键词
负序电流保护
内桥接线
定时限
反时限
negative-phase sequence current protection
internal bridge connection
definite time relay
inverse time relay
