Impact Of Distributed Generation On The Distribution Network In Wuzhong And Its Configuration

Along with the development of the era, the development and utilization of environmental protection and new energy gradually get the attention of the people, due to the distributed generations can realize the development and utilization of local energy, reduce the loss of the long-distance transmission,efficient,flexible,environmental protection, has become an important part of clean energy in the future.With the national policy support for clean energy, distributed generations development is very rapid, access number becomes more and more, the scale becames larger and larger, however, distributed generations access will influence the power quality, relay protection,network flow and network losses of distribution network. With more and more distributed generations access to the distribution network, people pay more and more attention to the influence that the distributed generations have on the distribution network,how to accept distributed generations and reduce the influence that distributed generations have on the distribution network will also become a problem faced by the distribution network.In recent years, the Wuzhong area distributed generations developed very rapidly, in order to effectively accept distributed generations, this paper investigation and reaserch the access status of Wuzhong area distributed generations, the influence that the distributed generations access to the Wuzhong power grid are analyzed in detail, focuses on the influence that the photovoltaic plants have on Wuzhong power grid. It is explained from the aspects which includes power quality, reliability, safety, economy and relay protection.Based on the above contents, this paper also researches on the selection of the access capacity and location of the distributed generations, and taking the minimum network losses as the goal, in consideration of the construction conditions, economy, safety, power quality constraints, the calculation example of Wuzhong distributed generations access configuration problems is carried out, and the optimal access capacity and optimal access location are obtained under the specified target network. This paper lays the foundation of the research on the access of the distributed generations to the distribution network.