An Improved Low Frequency Oscillation Disturbance Source Localization Method in Control Devices of Generator

2019 3rd International Conference on Environmental and Energy Engineering

生态环境科学

Guo, Siyuan^1 ; Zhang, Shoushou^2 ; Zhao, Yongsheng^1 ; Li, Gang^1 ; Song, Junying^3

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

State Grid Hunan Electric Power Company Limited, Changsha

410004, China^3

关键词: Electrical signal;    Excitation system;    Forced power oscillations;    Governor system;    Low frequency oscillations;    Non-periodic components;    Oscillation disturbance;    Oscillation energy;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/281/1/012031/pdf
DOI  :  10.1088/1755-1315/281/1/012031

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

In this paper, an improved oscillation disturbance source localization method in control devices of generator is investigated. Using the dominant component of the electrical signals by the fast Fourier transform (FFT), the oscillation energy for governor system and excitation system is obtained separately. Then, based on the direction of the non-periodic component of the oscillation energy for the two systems, the control device level locating of the oscillation disturbance source is realized. Taking the forced power oscillation accident caused by too strong primary frequency modulation as an example, the oscillation energy based on FFT for the two systems show that the proposed method can locate the disturbance source accurately.