Multi-objective optimization method for three-phase load imbalance in distributed photovoltaic distribution networks
WANG Huijuan
LIU Niu
DING Fei
XU Wenbin
Abstract：In view of the high randomness of the load in the low-voltage distribution network,the problem of three-phase load imbalance occurs frequently,resulting in three-phase voltage asymmetry and increased line losses.The grid connection of distributed photovoltaic power further aggravates the three-phase imbalance and raises the risk of voltage over-limit.It is proposed to take the comprehensive index of three-phase imbalance degree,the risk index of voltage over-limit and the investment minimization index as the minimization optimization objectives.Construct a multi-objective optimization model for three-phase load imbalance in the distributed photovoltaic distribution network to achieve the control of photovoltaic output power.The results show that this method can effectively improve the three-phase load imbalance problem of the distribution network and reduce the risk of node voltage exceeding the limit.
Keywords：three-phase imbalancerisk of voltage exceeding the limitdistributed photovoltaicmulti-objective optimizationgenetic algorithm
Publication Date：2025-06-25
Online Publishing Date：2025-09-01(First online date of this platform, not the publication date of the document)
Pages：5( 37-41 )