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武汉三联水电控制设备公司、武汉交通科技大学、武汉冶金科技大学,通过几年的科研合作,研制出了一种新型水轮机调速设备-SLT 全数字逻辑式电液调速器,采用全标准化液压元件单元组合的脉宽调制式逻辑电液随动系统,电气部分采用当今工业领域中使用最为广泛的可编程控制器作为调节控制核心,控制方式为 PWM 脉宽调制输出,简化了硬件电路,全部由软件程序实现,大大地提高了整个系统的可靠性。该调速器已于1998年2月在四川万县市双河电厂2号机组正式投
Wuhan Sanlian Hydroelectric Control Equipment Co., Ltd., Wuhan Jiaotong University, Wuhan Metallurgical University of Science and Technology, through a few years of scientific research and cooperation, developed a new type of hydraulic turbine speed control equipment - SLT all-digital logic type electro-hydraulic governor, using fully standardized hydraulic pressure. The pulse width modulation type logic electrohydraulic servo system of the element unit combination, the electrical part adopts the most widely used programmable controller in the industry today as the regulation control core, the control method is PWM pulse width modulation output, and the hardware circuit is simplified. Realized by the software program, greatly improves the reliability of the entire system. The governor was officially put into operation in Unit 2 of Shuanghe Power Plant in Wanxian City, Sichuan Province in February 1998.