Abstract the PLC S7-200/300 monitoring system in hydropower station LCU application and technical system of water supply in hydropower station of the function and application in the hydropower station hydraulic device; Again with the system of engineering drawing hydropower puter monitoring system structure diagram and the hardware configuration table; The last program the PLC control system. Key Words: Hydropower development trend ;S7-200 ;PLC programming ;System structure of the system 目录 第一章绪论·····················································4 ··························4 ···········································4 ···········································6 ·························11 ··················11 ,按计算机控制方式结构来分析下列几种模式系统·········14 第二章S7-200/300 PLC在水电站监控系统LCU的应用···············15 PLC现地控制器················································16 控制系统的功能···············································18 水力发电站排水系统控制系统··················&#