Analysis of Power System Low Frequency Oscillation Based on Energy Shift Theory

5th Annual International Conference on Material Science and Environmental Engineering

材料科学;生态环境科学

Zhang, Junfeng^1 ; Zhang, Chunwang^2 ; Ma, Daqing^3

Training Center of Jilin Electric Power Company, China^1

Control Center of State Grid Changchun Power Supply Company, China^2

Jilin Electric Power Company, China^3

关键词: Case analysis;    Dynamic behaviors;    Energy coefficients;    Energy exchanges;    Energy functions;    Low frequency oscillations;    Operating condition;    Power System;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/301/1/012083/pdf
DOI  :  10.1088/1757-899X/301/1/012083

来源: IOP

【 摘 要 】

In this paper, a new method for analyzing low-frequency oscillation between analytic areas based on energy coefficient is proposed. The concept of energy coefficient is proposed by constructing the energy function, and the low-frequency oscillation is analyzed according to the energy coefficient under the current operating conditions; meanwhile, the concept of model energy is proposed to analyze the energy exchange behavior between two generators. Not only does this method provide an explanation of low-frequency oscillation from the energy point of view, but also it helps further reveal the dynamic behavior of complex power systems. The case analysis of four-machine two-area and the power system of Jilin Power Grid proves the correctness and effectiveness of the proposed method in low-frequency oscillation analysis of power system.