United Power Quality Regulator Site Selection Strategy Based on Sensitivity Analysis

A location strategy for the United Power Quality Regulator (UPQR) is proposed to solve the negative impact of the distributed generation and power electronic equipment in modern distribution networks. For harmonic pollution and voltage deviation, reactive power/voltage sensitivity and harmonic sensitivity are calculated by the fundamental power flow and the harmonic power flow. By incorporating the idea of weighted average of node sensitivity, a multi-objective weight design method is proposed. Moreover, an optimal location model is established with the maximum voltage Total Harmonic Distortion (THD) and the Total Voltage Deviation (TVD) as the optimal objectives. The Genetic Algorithm (GA) is used to solve the location model of UPQR, and the optimal location scheme is achieved. Finally, the IEEE 33 bus system is taken as an example for analysis, and simulation results verify the effectiveness of the proposed strategy.