Research on the Influence of Different Types of Distributed Power Supply on Distribution Network Voltage

High-permeability distributed power (DG) access to the distribution network has become the latest trend in the development of renewable energy, which has led to some questions, such as the changes in distribution network voltage, complex power flow calculation, difficult protection, and increased harmonics, which are more complex and random as compare with the conventional distribution networks, and affect the reliability of the distribution networks. This article starts from the perspective of the impact of different types of DG access to the distribution network on the node voltage. Based on the standard IEEE33 node distribution network, specific examples are used to compare the effects of different types on the distribution network. The simulation results show that the role of the node voltage of different types' DG in the distribution network is very different. When protecting the DG access to the distribution network, it is necessary to consider the type of DG.