摘要
根据宝安换流站的一次冗余极控系统的COL故障引起的跳闸事件,通过现场实际情况的描述和对受损模块PCB板的详细观察和分析,找到了导致故障的原因所在——电容击穿而产生的非极低阻性短路导致的模块被烧毁。并根据现场电气接线提出了COL安装接线和COL电源回路改进方案。新方案可很好地避免由前述类似单元器件故障引起的系统跳闸,极大地提高了系统的可靠性和稳定性。
According to a trip event of redundant pole control system in Baoan converter station, based on onsite description and observation and analysis for spoiled COL module, we found out that a capacitor breakdown led to the COL fault. The capacitor breakdown produced a nonlinear and low resistance short circuit. This translated into that COL was burned down. An improved scheme is given for COL installation and power supply circuit in pole control cubicle. The improved scheme can avoid trip caused by COL fault, and greatly improve the reliability and stability of pole control system.
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2016年第2期151-154,共4页
Power System Protection and Control
关键词
极控系统
冗余
COL
跳闸
电容击穿
电源回路
pole control system
redundant
COL
trip
capacitor breakdown
power supply circuit
