Optimal Compensation Method for Multi-node Voltage Harmonics Based on SAPF

doi:10.11930/j.issn.1004-9649.202007182

Abstract

Abstract: With the decentralized access of non-linear loads in the local distributed network, the traditional shunt active power filter (SAPF) configuration method with the objective of local compensation of harmonics requires integration of a large number of control equipment, which leads to both low control efficiency and high control cost. Therefore, the optimization of SAPF configuration is needed for global comprehensive suppression of harmonics in the local distributed network. Firstly, the Norton equivalent method is used to establish an objective function for optimal compensation of the harmonic voltage in local distributed network. Secondly, the optimization problem is solved using the non-linear programming principle and the geometric aided analysis method to determine the installation position and optimal configuration capacity of SAPF in the system, and a comprehensive suppression algorithm is proposed for harmonic voltage in the power network based on SAPF. Finally, a simulation model of an IEEE-18 node system is established to verify the feasibility of the proposed algorithm. The results show that in the case of different distribution of nonlinear loads, all the configuration results have good control effects, and the overall harmonic distortion of the distributed network can be effectively suppressed through fewer SAPFs with less capacities.

Key words: shunt active power filter (SAPF), harmonics, local power network, aided geometric method, harmonic suppression

YIN Xiaoqing, YI Hao, YANG Zebin, ZHUO Fang, WANG Meng, LIU Xiayu, ZHU Chengzhi. Optimal Compensation Method for Multi-node Voltage Harmonics Based on SAPF[J]. Electric Power, 2021, 54(8): 2-10.

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