电力系统自动化2011，Vol.35Issue(7)：97-101,5.
一起纵联后加速保护误动事故分析及对策
Analysis and Countermeasures for Mal-operation of Pilot Post-acceleration Protection
张健康 1粟小华 1胡勇 1李怀强1
作者信息
- 1. 西北电力调度通信中心,陕西省,西安市,710048
- 折叠
摘要
Abstract
conventional line protection the return signal of contact in tripping position relay TWJ is usually employed as a criterion of post-acceleration protection startup after analyzing a mal-operation case of pilot post-acceleration protection, it is clear that the design of early TWJ circuit is unreasonable. It shows that the returning of TWJ contact is usually earlier than the tripping of circuit breaker, which frequently leads to the false input of acceleration protection. Meanwhile, there is defect in protection device software and the distance acceleration component may frequently fulfill the operation condition during open-phase operation mode. Factors mentioned above may cause acceleration protection mal-operation. Improvements on field wiring and protection software resulted from the mutual coordination between the secondary circuit and protection device are put forward.关键词
后加速保护/跳闸位置继电器/阻抗元件/非全相运行Key words
post-acceleration protection/tripping position relay/distance component/open-phase operation mode引用本文复制引用
张健康,粟小华,胡勇,李怀强..一起纵联后加速保护误动事故分析及对策[J].电力系统自动化,2011,35(7):97-101,5.
