Analysis of DG Influences on System Losses in Distribution Network

Nowadays distributed generation is often associated with the distribution network. Distributed power supply will have an important impact on the system network loss when it connects to distribution network. Change rate of the network loss and distribution rate of the network loss is mentioned after introducing the types and the grid-connected modes of distributed power supply. Theoretical analysis of distributed power supply influences on system net losses in distribution network is done by the way of treating distributed power supply as the special load which can output active power. The result shows the relation of distributed power supply influences on system losses with its capacity connected to the grid, its location and its operation mode. This provides a theoretical basis for grid-connected of the actual distributed power supply.