Reactive Power and Voltage Optimization Control Strategy in Active Distribution Network Based on the Determination of the Key Nodes

2017 2nd Asia Conference on Power and Electrical Engineering

能源学;电工学

Meng, Qingmeng^1 ; Che, Renfei^1 ; Gao, Shi^1

Key Laboratory of Power System Intelligent Dispatch and Control, School of Electrical Engineering, Shandong University, Jinan, China^1

关键词: Active distribution networks;    Closeness centralities;    Objective functions;    Particle swarm optimization algorithm;    Reactive power compensation device;    Reactive power output;    Voltage control strategies;    Voltage optimization;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/199/1/012101/pdf
DOI  :  10.1088/1757-899X/199/1/012101

来源: IOP

【 摘 要 】

The distributed generation which is integrated in the active distribution network changes power flow, bringing new challenges to the voltage control. When voltage limit violation happens, in order to make the voltage return to normal range and improve the voltage quality, a novel voltage control strategy is proposed. Considering the voltage quality and node importance, the electrical closeness centrality and key node contribution degree are defined, and the key nodes are determined by the orders of the key node contribution degree. This paper uses the reactive power compensation devices which are installed at the key nodes coordinated with the reactive power output of the distributed generation to realize the voltage optimization control. The voltage optimization control model is established by taking the minimum power loss as an objective function. Using the particle swarm optimization algorithm solves the model. The simulation results of the improved IEEE-33 bus system verify the effectiveness of the proposed method.