【摘要】 水电站计算机监控系统通常为分层分布、开放式的结构体系,监控系统能够根据需要进行水轮机组的有功功率和无功功率调节,主控层的操作员工作站给定水轮机组运行的有功功率和无功功率值,网络通讯使现地控制单元(LCU)的可编程控制器(PLC)运行功率控制流程,实现机组的功率调节。水轮发电机组的功率调节主要通过控制机组的调速器系统和励磁系统来实现,提出了二维模糊比例积分微分控制(PID控制)水轮发电机组功率调节的模式,可根据功率偏差和功率偏差变化率进行PID参数的在线自整定,机组能快速、准确、稳定地达到给定的功率值,使监控系统的功率调节具有良好的控制特性和鲁棒性,有利于延长机组的使用寿命。更多还原

【Abstract】 The computer monitor and control system for hydropower station is always a structure system of laminate distribution and open style. The system can adjudge active power and inactive power of water turbine according to the requirement. The operators in active-control level give the value of active power and inactive power for water turbine by computer workstation. PLC of LCU run the power control procedure by net communication in order to realize power adjust. The power adjust of water turbine mainly by speed control system and magnetization system. The 2-D Fuzzy PID Control Model is proposed in order to carry out power adjust of water turbine . In this new method the parameter of PID can self-neaten on line according to power deviation and power deviation rate. By means of this procedure the machine unit can obtain given power value rapidly, exactly and stably. It can make the power adjust of monitor and control system obtain good control characteristic and robust, and it is benefit to extend the work life of machine unit.更多还原