摘要
电力系统低频振荡事件在国内已发生了多起,严重地威胁着汽轮机组的安全运行。结合具体案例,分析了汽轮机组在电力系统低频振荡期间的不同反应,指出电力系统低频振荡主要通过转速测量值与汽轮机调节阀开度大幅晃动2个途径来威胁机组安全运行;通过实际测试,发现了某机组在低频振荡发生时控制油压力会持续下降。结合国内实际情况,建议采取措施,提高控制油系统的抗干扰能力,并做好事故控制预案。
The low frequency oscillation of the power system has occurred many times in China, which endangers the safe operation of the steam turbines. Based on the specific cases, the different reactions of the steam turbines during the low frequency oscillations of the power system are analyzed. It is pointed out that the low frequency oscillation of the power system is threatening the safe operation of the unit in two ways. One is the speed measurement and the other is the turbine valve opening fluctuation. Through the actual testing, it is observed that the control oil pressure of a unit declines continuously when the low frequency oscillation occurs. Taking China＇s situations into account, it is suggested that measures should be taken to improve the anti-interference ability of the control oil system, and contingency plans should be made.
出处
《中国电力》
CSCD
北大核心
2017年第10期120-123,共4页
Electric Power
关键词
汽轮机
电力系统
低频振荡
调速系统
转速
调节阀
steam turbine
power system
low frequency oscillation
turbine governor
speed
regulating valve
