摘要
采用"PLC+微机准同期装置"的方法实现了电站监控系统并网环节的设计。系统中PLC采用三菱公司的FX2N系列,利用内部程序逻辑控制,确保任何时候只输出一路通道选择信号,实现可靠选线控制。而微机准同期装置则可以精确地计算出导前时间,确保在零相位差点准确合闸。该系统因结构简单、功能完善、实现方便,适合在电站监控系统中进行推广。
A new idea is introduced to realize the design of grid-connected module in power station monitoring system.In this system, FX2N PLC of MITSUBISHI is selected,which can insure only one output singnal and achieve credible selecting control using the program logic. While the micro-computer synchronization device can calculate accurately the leading time and ensure that the switch on take place in the zero phase. This system with simple structure,perfect function, realizing convenience, is suitable to spread.
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2008年第24期88-89,96,共3页
Power System Protection and Control
关键词
并网
同期
监控系统
零相位
选线
grid-connected
synchronization
monitoring system
zero phase
selecting control
