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| Research on harmonic control in low voltage distribution system of water supply project |
| LI Wanxin1,2 |
1. Shanghai Municipal Engineering Design Institute (Group) Co., Ltd, Shanghai 200092;
2. Shanghai Urban Transportation Design Institute Co., Ltd, Shanghai 200025 |
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Abstract There are a large number of nonlinear loads in water supply project, which lead to harmonics, affect the power quality of the power supply and distribution system, and then affect the reliability of water supply. It is essential to conduct systematic research on the hazards of harmonics, harmonic mitigation solutions, and their actual effectiveness, taking into account the equipment characteristics of water supply projects and the requirements at different design stages. This paper analyzes the main harmonic source, harmonic content, distortion rate and main control methods in the water supply industry. Combined with the engineering practice, the harmonic control work of existing water supply projects in water plants and pumping stations is investigated on the spot, and the relevant data of compensation equipment such as reactors, active filters and passive filters are collected. The current harmonic control measures and the demand of operating units for high-quality power distribution are collected. According to the investigation and the result of model analysis, this paper studies the fine harmonic control design with different topology and different harmonic sources, and designs a harmonic calculation software tool based on Excel VBA environment, which has a certain reference for the harmonic control of low-voltage distribution system in water supply projects.
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Received: 20 January 2026
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2026, Vol. 27 
