Abstract
An optimal configuration planning of static var compensator (SVC) based on suppressing harmonic resonance is proposed. The installation of SVC changes the natural resonance frequency of the grid. A reasonable configuration of SVC can optimize the impedance distribution and shift the natural resonance frequency to the frequency band far away from the harmonic source. A siting and sizing planning to suppress harmonic resonance is proposed. Initially, the resonance frequency and modal frequency sensitivity (MFS) can be obtained by resonance modal analysis (RMA). Then, the optimal site can be obtained by calculating the participation factor (PF) of the resonance frequency. The static model of SVC is established, and the optimal installation capacity of SVC is obtained based on particle swarm optimization (PSO). Taking the maximum difference between harmonic source and resonance frequency as the objective function, simulations in Matlab/Simulink based on a modified IEEE-9 bus microgrid have been utilized to verify the effectiveness of the proposed planning.
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