摘要
当前,PSS-2B型电力系统稳定器已大量应用于大型机组的负阻尼及低频振荡特性的改善。然而对PSS的工作原理及其参数整定的理解不足,使得PSS控制机组精确性和正确性仍存在着隐患。为此关注2B型PSS的工作原理并综合多个电厂PSS-2B的现场情况,实证性地讨论了其对阻尼特性、对低频振荡特性的改善,系统反调及其在不正常工况下的隐患问题等,并提出了参数优化整定建议。
At present,PSS-2B power system stabilizer has been widely used to improve the negative damping and low frequency oscillation characteristics of large units.However,theinsufficient understanding of the working principle and parameter setting of PSS makes the operator still have hidden trouble in the accuracy and correctness of PSS control unit.Focusing on the working principle of PSS-2B and integrating the site situation of PSS-2B in several power plants,this paper empirically discusses and analyzes the improvement of damping characteristics and low frequency oscillation characteristics,system inversion and its hidden trouble under abnormal working conditions.Finally,it puts forward some suggestions for the parameters optimization and setting of PSS-2B stabilizer.
作者
雷阳
李春丽
何信林
李茂
LEI Yang;LI Chunli;HE Xinlin;LI Mao(Xi′an Thermal Power Research Institute Co.,Ltd.,Xi′an 710054,China;Huaneng Yunnan Diandong Energy Co.,Ltd.,Kunming 650214,China)
出处
《电工技术》
2019年第21期31-35,共5页
Electric Engineering
关键词
阻尼特性
电力系统稳定器
低频振荡
参数整定
系统反调
damping characteristic
power system stabilizer
low frequency oscillation
parameters setting
system inversion
