Multi-objective planning of rural power network incorporating distributed generation

Access of DG to rural power network is closely related to the power energy loss, voltage quality and reliability of rural power network. In order to make full use of DG, a multi-objective planning method of DG in rural power network is presented in this paper, which takes location and capacity of DG as decision variables, the minimums of the equipment investment cost, system power loss, interruption cost and power purchasing cost as objective functions, power flow balances as equality constraints, maximum line current, upper and lower limit of node voltage, and capacity and quantity limit of DG as inequality constraints. The four objectives are graded according to their importance. Planning engineer can select the optimal scheme based on practical planning objectives and requirements. Simulation results demonstrate that the proposed method is feasible and effective for the optimal allocation of DG in the distribution network, and can effectively improve the investment efficiency and performance index of rural