可编程微机调速器在水轮发电机组一级过速保护中的应用

Application of Programmable Microcomputer Governor in First Class Over-speed Protection of Hydro-generator

本文详细介绍了水轮发电机组在发生过速情况下调速器主配压阀的动作情况,分析了水轮发电机组常规一级过速保护容易引起保护误动的具体原因,并针对常规一级过速保护存在的问题,提出了一种利用可编程微机调速器解决水轮发电机组一级过速保护误动的实现方法,以及该方法在华能拉拉山水电站的成功应用。

This paper introduces the operation of the governor's main pressure-distribution valve in case of over-speed in hydro-generator.The reason of the protection misoperation of the hydro-generator is analyzed.Aiming at the problem of the conventional over-speed protection,a method to solve the misoperation of over-speed protection of hydro-generator by using programmable microcomputer governor is put forward,and the successful application of this method in Huaneng Lalashan Hydropower Station.