Research on the Under-voltage Optimal Control Method of Analytical Sensitivity for Power Simulation Training

2019 4th Asia Conference on Power and Electrical Engineering

能源学;电工学

Xu, Zhengqing^1 ; Yan, Faqi^2 ; Zhou, Chaofang^2 ; Xiao, Yanwei^3 ; Sun, Shu-Qin^4 ; Cao, Hua-Song^4 ; Liu, Yu-Jie^4

Beijing Kedong Electric Power Control System Co.Ltd., Beijing

100192, China^1

State Grid Huazhong Electric Power Control Subcenter, Wuhan

430077, China^2

State Grid Zhejiang Electric Power Co., Hangzhou

310007, China^3

College of Instrumentation and Electrical Engineering Jilin University, Lab. of Geo-Exploration and the Instrumentation Ministry of Education of China, Changchun

130026, China^4

关键词: Low voltage controls;    Optimal control methods;    Power system operations;    Power system simulations;    Reactive power compensation;    Sensitivity indices;    Sensitivity methods;    Training simulator;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/486/1/012047/pdf
DOI  :  10.1088/1757-899X/486/1/012047

来源: IOP

【 摘 要 】

As China increasingly interconnecting power system, more and more factors are interfering with the stable operation of the power system. Due to the lack of system reactive power and the overload, resulting in the increasingly problem of low voltage amplitude. Voltage is a measure of whether the power system operation is basically normal index, the voltage level of the power network determines whether the whole power system is stable or not. The dispatcher and operator need to answer any specific challenges to solve the under-voltage in training simulator. In this paper, based on the analytical sensitivity method, the basic principle of the low voltage problem is solved by the method of load shedding and reactive power compensation. Then the low voltage control method is optimized from two aspects of the load shedding load and reactive power compensation. The reactive power compensation with high sensitivity is presented. If the voltage of the compensation is not returned to the allowable range of the state, cutting the load operation according to the magnitude of the load-shedding sensitivity. Using power system simulation software to build a low voltage model of the IEEE-39 classic power system for the sensitivity index and the low voltage optimization control methods are analyzed and verified.