Multi evaluation method of distribution network with distributed generators

In this paper, the authors propose a multi evaluation method to evaluate the distribution network configuration candidates satisfied with constraints of voltage and line current limit from two viewpoints ((1) distribution loss and (2) voltage imbalance rate). In the proposed evaluation method, after several high-ranking candidates with small distribution loss are extracted by combinatorial optimization method, each candidate is evaluated from the two viewpoints using EMTP (Electro-Magnetic Transients Program). The standard analytical model of the distribution network based on the practical data is constructed to multi evaluate the distribution network configuration candidates. The constructed model has 4 distribution substations, 72 feeders, 450 switches, 1,728 single-phase loads, and 54 distributed generators (DG). This model has 2450 configuration candidates. In order to examine the validity of the proposed evaluation method, the numerical simulations are carried out for a standard analytical distribution network model with DGs.