Operation Optimization of Active Distribution Network Considering Linearized Power Flow Constraints

To deal with the nonlinear problem of the active distribution network (ADN) flow equation model, a linearized power flow constraints is proposed. Taking the minimum power purchase cost and the operation cost of distributed generation power as the objective, and considering the flexible characteristics of the load in the ADN, a mathematical model of the flexible load is structured. Then, to improve the computational efficiency, linear change of AC Load Flow (AC-LF)equation in the proposed model; Finally, the validity of the put forward model is demonstrated by the simulation of the IEEE 33 -bus ADN and the IEE E 69-bus ADN.