摘要
水力机组振动停机是水电站安全的基础保护之一,到目前为止还没有可靠的解决办法能满足无人值班和智慧电厂的要求。笔者提供了一种可靠且算法科学的振动停机保护解决方法(该方法已获国家发明专利授权)。该方法依据水力机组的结构特点和振动特性,在机组振动事故时,其关键测点(第一测点)的振动值发生跃变,且符合结构特点和稳定性特征时的关联测点(第二测点)也出现相应的跃变时判断机组振动事故发生并停机,进而能够避免机组遭受严重损坏。
Shutdown by vibration of hydraulic generator units is one of the basics for safety protection of hydropower stations.So far,there is no reliable solution,which can meet the requirements of unattended and intelligent power plants.This paper provides a reliable and scientific algorithm for vibration shutdown protection solution,which has been authorized by the national invention patent.This technology is based on the structural and vibration characteristics of hydraulic generator units.In case of vibration accident of generator unit,the vibration value of the key measuring point(the first measuring point)will jump over and when the relevant measuring point(the second measuring point)which conforms to the structural and stability characteristics jumps over correspondingly,the generator will be shut down to avoid serious damage.
作者
赵国建
先嘉
方伟
王谦
ZHAO Guojian;XIAN Jia;FANG Wei;WANG Qian(Sichuan Zhongding Science and Technology Co., LTD, Chengdu, Sichuan, 610046)
出处
《四川水力发电》
2021年第2期6-8,13,共4页
Sichuan Hydropower
关键词
水力机组振动
停机保护
方法
跃变值
安全阈值
vibration of hydraulic generator unit
shutdown protection
method
jump value
safety threshold
