Overview of distributed generation planning in electric distribution networks

As the proportion of distributed generation (DG) in the electric distribution network continues to increase, the intermittent characteristic of DG and uncertain load have many effects on electric distribution network planning and operation. Reasonable planning of DG in the electric distribution network can reduce network losses, improve power quality, reduce line transmission power, and improve system reliability. Unreasonable DG planning will cause problems such as waste of facilities, harmonic pollution and voltage fluctuations. Therefore, reasonable planning of DG has important practical significance. In this paper, the modeling of uncertain factors, the models of DG planning and optimization algorithms for solving planning models are introduced. The advantages and disadvantages of various algorithms are analyzed, and DG planning in electric distribution networks is more comprehensively reflected.