Research on Maximum Capacity of Grid-Connected Distributed Generation in Distribution Network

In this paper the allowable maximum capacity of grid-connected DG(Distributed Generation) in distribution network is calculated.The research model of calculating allowable maximum capacity of DGs is established after analyzing the influencing factors like location,capability,connection method of grid-connected DGs.Voltage,power flow,and DG capacity constraints are formed simultaneously.The mathematical model is realized based on Genetic algorithm and Newton—Raphson iterative method.The correctness is proved by the numerical example of distribution network in Jiangxi Gongqingcheng Demonstration Park.