Substation Reactive Power Regulation Strategy

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: Economy and reliabilities;    On-load tap changer transformers;    Power supply quality;    Reactive power balance;    Reactive power regulation;    Reliability of distribution network;    Shunt compensation capacitors;    Substation;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/301/1/012117/pdf
DOI  :  10.1088/1757-899X/301/1/012117

来源: IOP

【 摘 要 】

With the increasing requirements on the power supply quality and reliability of distribution network, voltage and reactive power regulation of substations has become one of the indispensable ways to ensure voltage quality and reactive power balance and to improve the economy and reliability of distribution network. Therefore, it is a general concern of the current power workers and operators that what kind of flexible and effective control method should be used to adjust the on-load tap-changer (OLTC) transformer and shunt compensation capacitor in a substation to achieve reactive power balance in situ, improve voltage pass rate, increase power factor and reduce active power loss. In this paper, based on the traditional nine-zone diagram and combining with the characteristics of substation, a fuzzy variable-center nine-zone diagram control method is proposed and used to make a comprehensive regulation of substation voltage and reactive power. Through the calculation and simulation of the example, this method is proved to have satisfactorily reconciled the contradiction between reactive power and voltage in real-time control and achieved the basic goal of real-time control of the substation, providing a reference value to the practical application of the substation real-time control method.