摘要
在呼伦贝尔至辽宁直流输电工程换流阀直流开路试验中,由于换流阀多次保护触发动作引起系统跳闸,导致站系统试验无法进行。笔者结合该试验过程,从直流开路试验基本原理、换流阀监控和极控制保护几个方面进行分析讨论,提出阀控单元(VCU)对换流阀的保护完全可以保证换流阀设备的安全,极控制保护对换流阀保护触发动作的监控可只作为监视,不必产生系统跳闸,从而保证OLT试验顺利进行。
In the open-circuit test of converter valve in Hulunbeier to Liaoning HVDC transmission project,the sub-system test was interrupted because of frequent tripping operations due to protection of converter vale.In this paper,the basic principle of open-circuit test,and the converter valve monitoring and pole control protection in the test are analyzed,and conclusions are drawn that VCU protection of converter valve is sufficient,and the pole control system should merely monitor the triggering action of converter valve protection instead of lead to system tripping,which may let the open-circuit test be performed successfully.
出处
《高压电器》
CAS
CSCD
北大核心
2012年第3期86-89,共4页
High Voltage Apparatus
关键词
OLT试验
换流阀
VCU
保护触发
open line test（OLT）
converter valve
valve control unit（VCU）
protection triggering
