Hunan Electric Power ›› 2023, Vol. 43 ›› Issue (1): 103-109.doi: 10.3969/j.issn.1008-0198.2023.01.018

• Experience and Discussion • Previous Articles     Next Articles

Three-Phase Load Imbalance Management Method Based on Improved Knapsack Algorithm for Manual Phase Change Station Area

ZHAO Ruolan1, JIANG Fei1, HE Zhenwu1, YAO Peng2, GUO Qi3, PEI Xiangyu1   

  1. 1. School of Electric and Information Engineering, Changsha University of Science & Technology, Changsha 410004,China;
    2. Zhuhai Wanlida Electric Automation Co., Ltd., Zhuhai 519000,China;
    3. National Electric Power Transformation and Control Engineering and Technology Research Center (Hunan University),Changsha 410082,China
  • Online:2023-02-25 Published:2023-03-03

Abstract: In view of the high degree of three-phase unbalance in the distribution station area and the low efficiency of the traditional manual phase change, a manual phase change optimization method based on the improved knapsack algorithm is proposed. The multi-objective phase change optimization model is constructed by considering the degree of three-phase unbalance and the number of phase changes. The phase change problem is abstractly transformed into a multi-pack model, and the algorithm is improved by introducing the idea of layered partitioned parallel search (LPPS). The actual data of a residential distribution area are used to analyze the case, and the improved knapsack algorithm is used to calculate the phase change scheme of the distribution area. Compared with the traditional knapsack algorithm, the number of phase changes is reduced while ensuring the treatment effect, which is conducive to improving the economic operation efficiency of the distribution area.

Key words: three-phase imbalance, phase change strategy, improved knapsack algorithm, manual phase change

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