Research on Optimization Method of Distributed Generation Hosting Capacity for Distribution Network

The demand for renewable energy has driven the large scale development of the distributed generation (DG) integration, and the DG access restrictions problem of the distributed network is gradually becoming prominent. In order to evaluate DG accessing to distribution network and search the maximum hosting capacity of distribution network to improve renewable energy accommodation, this paper proposes a hosting capacity comprehensive evaluation method of DG, which considering the aspects of DG access capacity, thermal stability, voltage deviation, and network losses. Furthermore, for the purpose of enhancing the DG hosting capacity and and ensuring that distribution system operates within an optimal range, an optimization problem is formulated in this article, which considering branch flow of second-order cone constraints to deal with optimal power flow, and using segmentation algorithm to address the issue. Finally, the proposed optimization method effectiveness is demonstrated by a typical radial distribution network.