Study on the Impact of Distributed Generation on Distribution Power Losses

Abstract

The impact of distributed generation (DG) on distribution power losses is closely related to DG technologies and load distribution. DG units are modeled as PQ, PQ(V) and PV nodes in power flow calculation. A revised back/forward power flow method is employed to calculate distribution power flow with various types of DG units. Power losses are computed when different types of DG units are connected to heavy load, general load and light load area apart. Simulation on IEEE 33-bus distribution network shows that connecting DG to heavy load area helps to maximize the loss reduction. And the installation of DG consuming reactive power will increase network losses unless reactive power compensation device is installed accordingly.

Analysis and Optimization of the Impact of Distributed Generation Integration on Distribution Network Loss

“…In the medium voltage distribution network, a bus contains multiple feeders with load, and each feeder has similar characteristics [7] . Therefore, when analyzing the impact of distributed generation on the distribution network, we can only analyze the feeder directly connected to the distributed generation, that is, to study a single feeder [8] . Various types of loads are connected to the distribution network, and it is difficult to describe the characteristics of each load in detail, so the constant power model is used to replace the load in this paper.According to the above analysis, this paper will study the following typical radial distribution network.…”