考虑不同变电站电压差异的配电网重构

摘要

配电网网络结构复杂,不同变电站之间常通过网络重构实现互为备用.该文针对多变电站网络重构电压差异问题,根据节点是否与变电站相连对不同变电站电压差异进行处理.基于配电网重构的二阶锥规划(second order cone programming,SOCP)模型,提出考虑不同变电站电压差异的网络重构求解思路,分析不同变电站电压差异对网络重构结果及网络损耗的影响.选择TPC 84节点算例进行验证,结果表明:不考虑电压差异的网络重构实际运行时有可能出现电压越限,给系统运行带来隐患;考虑电压差异的网络重构比不考虑电压差异时的网络损耗下降0.25% ~0.62%.%The distribution network has complex structure, the different substations often complement each other through distribution network reconfiguration. Aiming at solving the distribution network reconfiguration problem considering substation voltage difference,the voltage difference of substations are given different treatment according to the judgment whether the buses are connected to the substations. This paper proposes the solving outline of the distribution network reconfiguration considering voltage difference of multiple substations based on the second order cone programming (SOCP) model, and analyzes the impact of the voltage difference of multiple substations on the reconfiguration result and power loss. The TPC 84 case is selected for the verification. The results show that the distribution network reconfiguration without considering voltage difference of multiple substations may cause voltage violation and bring operation risks; the power loss of TPC 84 case considering voltage difference has decreased about 0.25% ~0.62% compared with non-considering voltage difference.