Global climate changes have created intense natural disasters such as typhoons

which may cause serious damage to power systems. As an emerging renewable energy resource

off-shore wind power has great potential in power systems resilience enhancement with its rapid start-up capability and development of anti-typhoon technology. In this paper

a restoration strategy by offshore wind power considering risk is proposed to speed up the restoration process and enhance system resilience. Specifically

a failure risk model of an individual wind turbine and then the whole wind farm is built for predicting severe weather's impact

with focus on failure probability. Further

a quantification model of resilience enhancement and risk cost

based on customer interruption cost assessment method

is introduced. Then

a two-stage optimized decision-making model is proposed to solve the scheme of offshore wind power and conventional power units in load restoration process. Case studies are undertaken on a modified IEEE RTS-79 system and results indicate the proposed restoration strategy can shorten duration of restoration and reduce customers' economic losses meanwhile ensuring system safety.