A Case Study of Low Frequency Oscillation Caused by PSS Field Test

2019 4th Asia Conference on Power and Electrical Engineering

能源学;电工学

Guo, Siyuan^1 ; Zhang, Shoushou^2 ; Zuo, Jian^1 ; Li, Li^1 ; Cui, Ting^1

State Grid Hunan Electric Power Company Limited Research Institute, Changsha

410007, China^1

Bangor College, Central South University of Forestry and Technology, Changsha

410018, China^2

关键词: Disturbance source localizations;    Dominant mode;    Low frequency oscillations;    Low frequency power;    Non-periodic components;    Oscillation energy;    Power system stabilizer (PSS);    Steady state oscillation;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/486/1/012049/pdf
DOI  :  10.1088/1757-899X/486/1/012049

来源: IOP

【 摘 要 】

In this paper, the event of low-frequency power oscillation caused by power system stabilizer (PSS) field test in a power plant is introduced, and the mechanism of oscillation is analyzed. In view of the existence of several dominant components in this low frequency oscillation accident, an improved measure is proposed to achieve the disturbance source localization. Based on fast Fourier transform (FFT) decomposition of active power and frequency in steady-state oscillation, several dominant components of the oscillation are obtained. By superimposing the non-periodic components of the oscillation energy for several dominant modes, the disturbance source of the low frequency oscillation accident is determined.