摘要
通过换流站光隔继电器误动原因的分析,提出了将光隔继电器更换为固态继电器与普通继电器,消除了实际现场在投退压板过程中造成极保护与极控系统间信号的误传输及误闭锁的影响。现场试验结果表明:该改进方法可以有效避免直流闭锁,提升了运行操作的可靠性,保证了直流系统的安全稳定运行。
By the misoperation causes analysis on optical relay in the transfer station,the method of replacing the optical relay with a solid state relay and an ordinary relay was proposed.The influence of error signal transmission and blocking between the pole protection and the pole control system caused by the actual field during in-and-out of service of the pressure plate was eliminated.The field test results show that the improved method can effectively avoid DC blocking,promote the reliability of the operation,and ensure the safe and stable operation of DC system.
作者
杨晨
黄欣
YANG Chen;HUANG Xin(Maintenance Company of State Grid Ningxia Electric Power Co.,Ltd.,Yinchuan Ningxia 750011,China)
出处
《宁夏电力》
2019年第4期40-43,共4页
Ningxia Electric Power
关键词
光隔继电器
固态继电器
直流工程
电容充电
电容放电
optical relay
solid state relays
DC engineering
capacity charge
capacity discharge
