中国电工网www.chinaet.net基于换相开关的配电变压器三相不平衡治理研究孙俐瑶,鲜于建川(上海电机学院商学院,上海201306)摘要:针对配电变压器三相不平衡现象,提出了一种基于换相开关的三相不平衡治理方案。为配电变压器低压台区设计了实时负荷调整策略,重点研究了优化算法的目标函数,使换相开关以较少的换相次数降低三相不平衡度、线路损耗及变压器损耗。改进粒子群算法的惯性权重、粒子速度和位置更新公式,并完成换相模型求解,得到最优换相方案。用MATLAB仿真验证了改进粒子群算法的优越性及优化后换相方案对降低配电变压器三相不平衡度的有效性。关键词:三相不平衡;负荷相序;换相开关;改进粒子群算法中图分类号:TM761DOI:10.19768/j.cnki.dgjs.2023.01.010ResearchontheThree-phaseUnbalanceManagementoftheDistributionTransformersBasedonCommutationSwitchSUNLiyao,XIANYUJianchuan(BusinessSchoolofShanghaiDianjiUniversity,Shanghai201306,China)Abstract:Aimingatthethree-phaseunbalancephenomenonofdistributiontransformers,athree-phaseunbalanceman-agementschemebasedonphasechangeswitchisproposed.Areal-timeloadadjustmentstrategyisdesignedforlowvolt-agesubstationofdistributiontransformer.Theobjectivefunctionoftheoptimizationalgorithmisstudiedtoreducethethree-phaseunbalance,linelossandtransformerlosswithfewercommutationtimes.Theinertiaweight,particlevelocityandpositionupdateformulasoftheparticleswarmoptimizationalgorit...