Research On Power Source Operation Control Of Distribution System Including Distributed Generations

Distributed power supply has provided an effective way for the new energy and renewable energy grid connected power generation and improve the overall economic efficiency of the power grid, which is in line with our country and the world's demand for energy saving and emission reduction. China has made great efforts on the development of renewable energy and reduction of contaminative remissions. Several laws and industrial policies have been launched, creating a favorable policy environment for the rapid development of solar PV industry. However, in the context of the implementation in a real distribution system of large amount of distributed generations, which is mainly based on intermittent primary energy sources, it is difficult for the DNO to manage the large amount of intermittent PVs without supervision system. However real-time control of all of them would be economic and technical unfeasible.In this paper, the influence of the distributed power supply on the distribution network is analyzed, and the voltage regulation measures of the power system are briefly introduced. The simulation platform is vry important for power system study. This paper briefly introduces the GridLAB-D simulation platform. In order to improve the ability of GridLAB-D data processing, the GridLAB-D Assist simulation software is developed. And then use the IEEE-13 node system to simulate and analyze the influence of distributed power integrate to distribution network. Intermittent energy access network through inverter. In this paper, we analyze the reactive power of the inverter and analyze the economic performance of the inverter. At the end of the article, we mainly focused on operation personnel is difficult to control the problem of a large number of distributed power. And proposed a strategy by the cooperation of optimal configuration of DG's capacity and the inverter's capacity, and the conventional controls of tap changers and capacity banks to obtain an acceptable voltage profile. By which, the distribution system could gain more flexibility in their operation, increase the feasibility of the integration of large amount of distribution system.