Benefit analysis and evaluation of distributed generation in distribution network under active management

The renewable distributed generation such as solar energy and wind energy, which is connected to the distribution network, can enhance the reliability of the power system and produce more economic benefits. This paper analyzes the impact of distributed power access network under active management (AM) at first. And mainly establishes the voltage distribution index and compares the voltage distribution in different ways of reactive power control strategies. Meanwhile, a reasonable economic evaluation model is proposed according to the general model of line loss and pollutant discharge standards. Finally, the evaluation index and model of three kinds of DGs under different accesses are verified by computing and analyzing simulation case with IEEE30 node model. Results of numerical analysis show that reasonable planning for the access of distributed power can improve voltage profiles reduce line losses and produce greater economic benefits under active management.