COL逻辑模块在直流输电控制系统中的应用  

The application of the COL logic module in DC transmission control system

作　　者：刘敏 姚致清[1,2] 张培珍 杨广羽 曹森 

机构地区：[1]许继电气股份有限公司直流输电系统部,河南许昌461000 [2]华中科技大学,湖北武汉430074

出　　处：《电力系统保护与控制》2011年第4期137-140,共4页Power System Protection and Control

摘　　要：在高岭直流输电工程中,出现逻辑切换模块COL与VCU设备接口时信号相互依赖,造成直流系统停机现象。针对COL模块在工程应用中出现的问题,对COL模块的信号逻辑和VCU信号接口逻辑进行了分析,得出VCU发出的'VCU正常'信号对极控系统的'极控系统正常'信号的依赖,直接导致了VCU故障之后,VCU故障信号将一直存在,以致极控系统不可用,造成直流系统停机。并提出了改进方案,避免工程应用中出现盲点,造成不必要的系统停机,提高直流输电系统的安全稳定和可控性。The signal interdependence between the logical switch module COL and the VCU device on DC power transmission project in Gaoling results in the phenomenon of DC system downtime.The signal logic of the COL module and interface logic of VCU signals are analyzed,and it is concluded that because＂VCU OK＂signal of VCU device depends on＂PC OK＂signal of the pole control system,after VCU fault,＂VCU fault＂signal will always exist,which result in the control pole system unavailable and then DC system downtime.The modified scheme is proposed to avoid the appearance of blind spots in engineering applications which reaults in unnecessary system downtime, which can ensure DC system a reliable and safe operation.

关 键 词：极控系统 逻辑切换模块 VCU 反逻辑 冗余 

分 类 号：TM721.1[电气工程—电力系统及自动化]