摘要
针对一起天广直流VBE系统故障跳闸导致极2闭锁事件,基于阀触发时序、触发回路及阀回检信号条件,分析了故障发生的过程,指出VBE系统阀触发脉冲丢失是导致换流阀闭锁的主要原因,直接原因是多个可控硅未向VBE系统返回回检信息。根据仿真试验结果,提出可通过优化TC处理器板至背板之间的接口芯片,以提高天广直流输电系统运行可靠性。
For the blocking of the pole 2 in Tianshengqiao converter station caused by the tripping fault of the VBE(valve-based control equipment)protective system,based on the valve trigger timing,trigger circuit and valve check back signals,this paper analyzes the process of the fault occurrence and points out that the main cause of valve blocking is the valve trigger pulse loss of the VBE system while the indirect one is that multiple thyristors do not return check back information to the VBE system.Based on the simulation result,it is proposed that the interface chip between the TC processor board and the back board can be optimized to improve the operational reliability of the Tian-Guang HVDC system.
作者
姬奎江
杨洁民
熊银武
邹复春
董朝阳
孟学磊
JI Kuijiang;YANG Jiemin;XIONG Yinwu;ZOU Fuchun;DONG Chaoyang;MENG Xuelei(Tianshengqiao Bureau,CSG EHV Power Transmission Company,Xingyi 562400,China;XJ Electric Corporation Ltd,Xuchang 461000,China)
出处
《电工技术》
2019年第22期97-100,共4页
Electric Engineering
关键词
VBE系统
触发脉冲丢失
触发回路
仿真
VBE protective system
trigger pulse loss
trigger circuit
simulation
