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在高水头电站中,为满足技术供水水压的要求,经常采取多种减压措施,而利用可调式射流泵进行减压的技术供水系统,在国内还较为少见.结合越南儒桂水电站,采用可调式射流泵技术供水方式,介绍了其技术供水自动控制系统的构成.针对恒压供水系统具有多参数、非线性、大时滞的特点,设计了一种自适应模糊PID控制器.该控制器能够对供水系统中的水压调节进行有效控制.控制系统采用自适应模糊PID控制器后,控制系统的响应速度加快,超调量减小,过渡过程时间大大缩短,振荡次数少,具有较强的鲁棒性和良好的稳定性.实际运行结果验证了所提出方法的有效性和可行性.
In high head station, to meet the technical requirements of water pressure, often take a variety of decompression measures, and the use of adjustable jet pump technology to reduce the pressure of the water supply system is still relatively rare in China.Combined with the Vietnamese hydropower station in Guangxi, the use of This paper introduces the structure of water supply system with adjustable jet pump technology and introduces the structure of its automatic water supply control system.According to the characteristics of constant pressure water supply system with multi-parameter, nonlinear and large time delay, an adaptive fuzzy PID controller is designed. Which can effectively control the water pressure in the water supply system.The control system uses the adaptive fuzzy PID controller, the response speed of the control system is accelerated, the overshoot is reduced, the transition process time is shortened, the number of oscillations is small, Strong robustness and good stability.The actual operation results verify the effectiveness and feasibility of the proposed method.