Aiming at the large-scale power outage caused by frequent extreme disasters

a resilience improvement technology of distribution network considering demand response is proposed. Ba-sic concept of distribution network resilience is combed

and two comprehensive resilience indexes

load resilience and DG strength

are put forward to quantitatively evaluate the distribution network resilience. The incentive-based demand response node model and is--land resilience model of distribution network are established. Ac-cording to the characteristics of large fluctuation of DG output in distribution network

a three -stage distribution network resilience improvement strategy based on demand response is proposed. Considering the situation that the distribution network loses the power sup-ply of the main network in the event of extreme natural disasters

an initial island is formed firstly. Then

the demand response technology is used to expand the scope of the island

and finally the dynamic state of the island is updated. Through the improved IEEE 33 node example

the three-stage process of the strategy is described in detail

and two scenarios are set. By comparing the evaluation results of quantitative indicators

the effectiveness and resilience improvement ability of the strategy are verified.