基于PSS配置的电力系统低频振荡研究

Study of Low Frequency Oscillation of Power Systems Based on PSS Configuration

首先介绍了电力系统低频振荡的原理、研究概况和抑制措施,然后利用PSASP进行系统的小干扰稳定计算,找出系统存在的失稳模态以及引起该失稳模态的主要原因和相关设备,在此基础上提出采用按规律配置电力系统稳定器(PSS)及随意配置PSS这两种方法来抑制系统的低频振荡。经过比较得知,按规律配置PSS较随意配置PSS具有一定的优越性。

This paper introduces the principle of low frequency oscillation of power systems,research survey and its restraining measure,calculates the small signal stability of the system to find out the system modes of instability,the main cause of instability mode as well as related equipments by PSASP.Based on which the paper puts forward the low frequency oscillation can be restrained by PSS with regular and irregular configuration.After comparing these two methods,it is found that the PSS with regular configuration is superior to that with irregular configuration.