PSL603G型线路保护远跳二次回路技术改进措施

The Technical Improvement Method of Secondary Circuit in PSL603G Type Line Protection Remote Tripping

远方跳闸及远传是国电南自PSL603G型光纤线路保护所具有的功能之一,在某些故障情况下,保证了保护动作的可靠性,但是目前PSL603G型线路保护远跳功能不能够通过装置外回路操作实现投退,存在误跳对侧断路器的潜在危险,文中作出分析,并提出改进措施。

Remote tripping and remote transmission are one of the fiber differential protection＇s functions,the type of which is PSL603G in Guodian Nanjing Automation Company.In some fault situations,it ensures the reliability of line protection.But the remote tripping in PSL603G type line protection is not able to achieve deblocking and blocking by the operation of the outer loop,which brings some potential danger.The paper gives an analysis for it,and brings an improvement method.