大中型水电站电气防误系统设计

Discussion on electric anti-maloperation interlocking system design for large and medium hydropower stations

结合水电站电气"五防"设计要求,在分析了传统电气防误闭锁和微机防误闭锁方式的特点后,提出了在大中型水电站电气防误系统设计中将电气二次防误闭锁和微机防误闭锁相结合的必要性。微机防误闭锁系统结构分为站控层、间隔层、过程层3层;运行模式有隔离、实时在线、混合等多种模式。详细介绍了系统的闭锁方案及其功能等;结合工程实际应用说明了所设计的电气防误操作系统为电站的安全稳定运行提供了有力的保障。

After the characteristics of traditional and microcomputer anti-maloperation interlocking are analyzed, the necessity of combining the secondary electric interlocking with the microcomputer anti -maloperation interlocking in the design of hydropower station electric anti-maloperation system is introduced according to the requirements of hydropower station electric ＂five-preventions＂ design. The structure of microcomputer anti-maloperation interlocking system is divided into the station control layer,cell layer and process layer and its operating modes are the isolation mode,real-time online mode,hybrid mode,etc. Its interlocking programs and functions are detailed. Practical applications prove its importance in the safe and stable operation of hydropower stations.