A distributed dispatcher training simulator（DTS） for interconnected wide area with a“distributed modeling， distributed simulation and distributed training” framework is proposed， which supports associated anti-failure maneuver between provincial and prefectural power grids. First， the main technical characteristics of this distributed system are presented. Then， the whole framework and software modules of DTS to meet the new needs are described and some key techniques including the development of the network model， generation of the training scenario both for provincial and prefectural power grids， and the decomposition and coordination calculation for the interconnected power grids are analyzed. Finally， numerical results of a real system are described.