Substation Reactive Power and Voltage Control Using Fuzzy Control Theory

In this paper, with analyzing the existing questions of conventional nine-area voltage and reactive power integrated control method, a new fuzzy control logic based dynamic reactive power boundary substation voltage and reactive power integrated control method is proposed. The fuzzy logic control strategies of this method can finish the decoupling control of voltage and reactive power in tight coupled zone to improve the control performance, dynamic reactive power boundary related to the system voltage can preferably adapted to the load characteristics. The system structure, fuzzy logic control rules and membership function of the proposed method are introduced. Simulation results and practical operating data have proved that this approach shows better robustness and performance compared with the conventional nine-area control method, it can reduce the adjust times of transformer tap and capacitors effectively and increase the service life of the transformer tap changer and capacitors switch.