ORIGINAL RESEARCH article
Front. Mech. Eng.
Sec. Mechatronics
Research on Harmonic Optimization and Suppression of Distributed Photovoltaic Storage and Distribution Networks by Improving PSO
Provisionally accepted
- 1State Grid Yuncheng Electric Power Supply Company, Yuncheng, China
- 2State Grid Taiyuan Electric Power Supply Company, Taiyuan, China
- 3State Grid Shanxi Marketing Service Center, Taiyuan, China
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With the continuous increase in the penetration rate of distributed photovoltaic and energy storage systems in distribution networks, the deterioration of harmonic pollution problems poses a threat to the safe operation of the power grid. This paper proposes an improved particle Swarm optimization algorithm (IPSO) for optimizing the harmonic suppression strategy of distributed photovoltaic energy storage distribution networks. By introducing weighted average and fuzzy control, the problems of poor search accuracy and local optima in traditional algorithms can be solved. Based on the harmonic distortion rate objective function of the filter device, the optimal configuration of the capacity and position of the filter device is achieved through an improved algorithm, effectively suppressing the harmonics in the distribution network and improving the power quality of the distribution network. To test the feasibility of the strategy, simulation experiments were conducted. The results showed that after the harmonic suppression device was installed in the distribution network, the distortion rate of the grid-connected current decreased from 19.99% to 2.54%, verifying the effectiveness of the proposed strategy in reducing current harmonic distortion and improving the quality of the current waveform. It can be seen that it is feasible to optimize and suppress harmonics in distributed photovoltaic storage distribution networks by improving the Particle Swarm Optimization (PSO)algorithm, providing new ideas for harmonic control in distribution networks under the high proportion of renewable energy access and promoting the development of the domestic power industry.
Keywords: Improve PSO Distributed, Photovoltaic storage and distribution network, Harmonic optimization Inhibition, Power system operation and control, power marketing technology
Received: 17 Jul 2025; Accepted: 26 Nov 2025.
Copyright: © 2025 Pei, Yan, Zhao, Zhang and Xiao. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence: Chun Xiao
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