An Active Distribution Grid Reliability Assessment Method Considering Source Load Response and Equipment Maintenance

With the extensive access of new energy sources and new energy storage, the distribution network is gradually transformed from a single power distribution network to a new type of distribution network that integrates and interacts with source-network-load-storage, which puts forward new requirements for the reliability assessment and overhaul strategy of the distribution network. In this paper, a distribution network reliability assessment method considering source-load response and equipment maintenance is proposed to address this issue. First, an optimization model of maintenance strategy considering distributed power output and network reconfiguration is established. Second, a distribution network reliability assessment method considering source-load response is proposed for the actual situation of a large number of new source-load accesses in the distribution system. Finally, an arithmetic example is analyzed with the IEEE 69-node distribution system. The results of the arithmetic example show that the method exhibits significant advantages in improving maintenance efficiency, reducing outage losses and enhancing system reliability.