Research on the Limit Access Capacity and Key Influencing Factors of Distributed Generation Connected to Power Network

In recent years, along with increasing global concerns for environmental protection and energy saving issues, the Distributed Generation (DG) technology has become a hot research topic. After DG connected into the distribution network, the distribution network structure, and operation will be tremendous changed. Therefore, it is of practical significance to study the influence of DG access on the distribution network and the capacity of the network. This article first analyzes the influence of DG on voltage quality of distribution network, and proposed DG limit access capacity optimization model. The model takes the voltage deviation, voltage fluctuation, short circuit current, line load flow, tidal current equation constraint and distributed force constraint into consideration, and uses PSO algorithm to calculate the distribution network limit receptivity. The simulation and optimization results show that the proposed model and algorithm are effective.