Research on Grouping Strategy of Feeders in Distribution Network Considering the Importance Degree of Tie Switches

This article proposes a quantitative method for the importance of tie switches in distribution networks. Firstly, a combination of stack and depth priority is used to search for the load supply path in the distribution network. Based on this, combined with the theory of load chain power supply, the substitutability of tie switches and their load recovery ability are analyzed to obtain a quantitative method for the importance of tie switches. Afterwards, a complex distribution network feeder grouping strategy based on redundant switches and non critical tie switches was proposed, which is conducive to the simplification analysis of complex distribution networks. Finally, through numerical analysis, the quantitative results of the importance of tie switches and the grouping situation of complex distribution networks were demonstrated.