基于混合整数线性规划的含ZIP负荷有源配电网重构方法

Reconfiguration method of an active distribution network with a ZIP load model based on mixed integer linear programming

随着分布式电源并网和负荷类型的日益复杂,传统配电网重构模型尚未考虑复杂的综合负荷模型。提出了考虑ZIP综合负荷模型的有源配电网混合整数线性规划方法。在辐射状配电网二阶锥潮流模型的基础上,通过线性回归法将ZIP负荷模型等效为ZP负荷模型,建立基于混合整数二阶锥规划的有源配电网重构模型。通过多面体近似将二阶锥约束进行线性化,建立基于混合整数线性规划的有源配电网重构模型。在三个不同规模配电系统的仿真结果表明,基于混合整数线性规划的有源配电网重构模型精度与基于混合整数二阶锥规划的几乎相同,但优化效率提高了15%~30%,具有较高的优化精度和效率。

There is grid connection of distributed generation and an increasing complexity of load types.However,the traditional distribution network reconfiguration model has not considered an integrated load model.Therefore,this paper proposes a mixed integer linear programming model of an active distribution network considering the ZIP load model.Based on the second-order cone power flow model of a radial distribution network,the ZIP load model is equivalent to a ZP load model by linear regression method.The active distribution network reconfiguration model based on mixed integer second-order cone programming is established.The second-order cone constraint is linearized by polyhedron approximation,and the active distribution network reconfiguration model is established.The simulation results of three different scale distribution systems show that the accuracy of this active distribution network reconfiguration model is almost the same as that based on mixed integer second-order cone programming,but the optimization efficiency is improved by 15%~30%.This shows high optimization accuracy and efficiency.