摘要
介绍了±1100kV特高压直流控制保护系统的整体结构和设计方案,重点探讨了特定冗余设备故障的系统自监视及故障处理方法。针对极层冗余控制装置故障,改进极层保护装置监视逻辑,避免极保护装置同时退出运行。对于换流器层冗余控制装置故障,由极控制装置发合旁通开关命令,退出换流器。所述方案有利于提升±1100kV特高压直流输电系统的可靠性,仿真结果也表明上述方案是可行和有效的。
This paper introduces the overall structure and design scheme of the control and protection system for ±1 100 kV UHVDC, the self-supervision and fault handles about its special redundant device faults are especially discussed. For the faults of redundant pole control units, the supervision logic of the pole protection units are improved, so as to prevent all protection units from out of service simultaneously. For the faults of redundant converter control devices, the correlative converter will exit by the bypass switch close order from the control device for this pole. The methods will improve the reliability of the ±1 100 kV UHVDC, and the simulation results show the effects and feasibility of the methods.
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2015年第21期148-153,共6页
Power System Protection and Control
基金
国家电网公司科技项目(SGKJ[2012]515)~~
关键词
特高压直流输电
控制保护系统
冗余故障
自监视
RTDS仿真
ultra high voltage direct current（UHVDC）
control and protection system
redundant faults
self-supervision
real-time digital simulation（RTDS）
