基于线性化潮流模型的配电网电压无功控制策略OACSTPCD

The existing Volt/Var control models are mainly solved based on second-order conic relaxation,which cannot take the voltage deviation as the objective function and take up a lot of CPU time.In this paper,the Volt/Var control strategy of distribution network based on linearized power flow model is proposed.Based on the branch power flow equa-tion,the Volt/Var control model is built considering various regulating devices such as on load tap changer(OLTC),ca-pacitor bank(CB)and photovoltaic(PV).And the integer variables in the model are relaxed to continuous variables in order to construct a second-order conic programming(SOCP).Then,the power flow equations are expanded based on the benchmark state calculated by SOCP in order to linearize the model.The linearized power flow(LPF)is solved to mini-mize voltage deviation and restore the continuous variables to integer variables.The simulation on improved IEEE 33-bus distribution network system shows that the proposed LPF model has higher accuracy and fast solving speed,which is suit-able for real time Volt/Var control in distribution network.