巨型水轮机调速器主配电气中位整定关键技术研究与应用

Study and Application of Key Technology for Electrical Neutral Setting of Main Distribution Valve of Giant Turbine Governor

水轮机调速器是控制水力发电过程的关键核心设备之一,其主配电气中位未整定准确会导致出现主配频繁调节现象,严重威胁机组和电网安全稳定运行。为解决主配频繁调节问题,科研小组对调速器液压随动系统进行了深入研究。通过建立数学模型,提出了静态和动态平衡理论,在明确主配频繁调节原因的基础上探索出了主配电气中位自动诊断方法、自动整定方法、直接整定方法及改进型直接整定方法等一系列可精确快速整定主配电气中位的技术方法。并将该技术方法成功应用于调速器现场控制软件中,实现了主配电气中位自动诊断及智能整定功能。现场测试和投运效果表明,本技术成果实现了机组检修时主配电气中位整定自动化,有效解决了调速器系统主配频繁调节问题,保证了机组和电网安全稳定运行。

The turbine governor is the key core equipment for controlling the process of hydroelectric power generation.The unsettled neutral position of main distribution gas will lead to frequent regulation of main distribution,which seriously threatens the safe and stable operation of units and power grid.In order to solve the problem of frequent adjustment of main distribution,the scientific research team has carried out in-depth research on the hydraulic servo system of the governor.By establishing a mathematical model,static and dynamic balance theory is put forward,and a series of technical methods such as automatic diagnosis method,automatic setting method,direct setting method and improved direct setting method for accurate and fast setting of neutral in main distribution gas are explored on the basis of defining reasons for the frequent adjustment of main distribution.This technical method is successfully applied in the field control software of governor,realizing the function of automatic diagnosis and intelligent setting of neutral position in the main distribution gas.Field test and operation results show that this technical achievement realizes the automation of neutral setting in main distribution gas during unit overhaul,solves the problem of frequent adjustment of main distribution in governor system effectively and ensures safe and stable operation of unit and power grid.