The integrated operation of wind/thermal/pumped-storage can realize energy complementation and im- prove wind power utilization. However，the uncertainty of wind power would have a negative impact on the econ- omy and reliability of the optimal dispatch for the integration system. In order to solve this problem and minimize the overall operating cost of the system，based on the probability distribution function of wind speed，the uncer- tainty distribution probability of wind power output was obtained. The confidence interval method was used to generate wind power of the extreme scenario，and an economic dispatch model of the wind/thermal/pumped-stor- age integration system based on the extreme scenario was established. In addition，this study analyzed the relia- bility constraints of the extreme scenario，the effects of confidence interval and the pumped-storage capacity on the combined operating cost and reliability of the multi-energy units with an example application. The results showed that the proposed method could effectively solve the problem of low permeability，and it worked better in economy and reliability.