天广直流线路故障重启逻辑优化措施研究  

Research on Optimization Measures of DC Line Recovery Sequence Logic in Tian-Guang HVDC Project

作　　者：陈极升[1] 黄义隆[2] 吴健颖 李晋伟[2] CHEN Jisheng HUANG Yilong WU Jianying LI Jinwei(Liuzhou Bureau, EHV Power Transmission Company of CSG, Liuzhou 545006, China Maintenance ＆ Test Center, EHV Power Transmission Company of CSG, Guangzhou 510663, China)

机构地区：[1]中国南方电网超高压输电公司柳州局,广西柳州545006 [2]中国南方电网超高压输电公司检修试验中心,广东广州510663

出　　处：《中国电力》2016年第12期65-69,共5页Electric Power

摘　　要：针对天广直流线路短时连续遭受故障时,直流线路故障重启功能不正确执行的情况,从直流线路保护原理、保护动作过程和线路重启逻辑等方面,分析了第2次直流线路故障重启不正确的原因,通过仿真试验重现了现场故障情况,并证实了直流线路在重启次数计数器50 ms延时的时间间隔内再次遭受故障时,会导致直流线路故障重启功能执行不正确,提出了去除重启逻辑中重启次数计数器延时的优化建议,仿真结果表明了该优化方案可行且有效。Continuous faults in a short perid lead to malfunction of of Tian-Guang DC line fault restart device. Based on principles of DC line protection, protection sequence of events and line restart logic, failure reasons in second DC line fault restart are analyzed. Simulation test reproduces field fault. It is shown that if there is a second fault occurs during the 50 ms time delay of retart counter after first fault, the fault restart device will fail. Optimization measure is proposed to delete the time delay in the process. Simulation result proves feasibility and effectiveness of proposed method.

关 键 词：高压直流输电 线路保护动作 直流线路故障重启动 计数器延时 优化措施 

分 类 号：TM75[电气工程—电力系统及自动化]