Study on the Resilience Model of Power Distribution Networks Under Typhoon Disasters

The impact of typhoon disasters on power distribution networks (PDNs) has received increasing attention. It is significant to study the resilience model and select the typical fault scenarios with high occurring probability and impact degree on the PDNs under typhoon disasters. This paper investigates the resilience model of PDNs based on the principle of structural reliability. Firstly, the load influence of conductors and towers based on the physical model of the typhoon disasters is analyzed. Then, the time-varying failure rate model of overhead distribution lines is established, and the selection strategy of the typical failure scenarios in terms of system information entropy is presented for the PDNs. The approach validation is conducted using the improved IEEE 33-node distribution system, and the outcomes confirm the validity and rationality of the proposed resilience model.