Reliability evaluation method of distribution network considering new energy access

With the development of new energy generation technology and grid-connected technology, more and more new energy sources are integrated into the distribution network, which brings various impacts on the operation and control of the distribution network. New energy access has changed the traditional power grid architecture, which has a very wide impact on the power supply reliability, power quality and network loss of the distribution network. However, the large-scale application of new energy is also facing some new technical difficulties and problems. In this paper, according to the characteristics of security situation assessment of new energy access distribution network, the index weight is optimized based on the chi-square distance. The security assessment of ER algorithm is proposed, which solves the one-sidedness of the previous static security situation assessment method and lays a foundation for the simulation analysis of security situation in the case of new energy access. The experimental results show that the new energy has a specific impact on the security situation of the distribution network, which has a certain guiding significance for the rational planning and operation of the new energy access distribution network system.