To cause a person to be trained to undergo training of fault restoration operation for an arbitrary fault scenario by himself or herself at each control station by transmitting a data to a terminal, when a power system changes, as a result of state imitation of the power system by a system imitation means.

Only binary information having had a state change is packed in a transmisson packet. Next, the number of numerical information is begun to repeat. Only pieces of numerical information having had changes not smaller than a judging value are packed in a transmisson packet. The transmisson packet is delivered to an input/output processing means 41. Consecruently, it becomes possible to transmit information without any delay even to the terminal 31 of a control station at a remote place, and to perform training having an excellent responsibility, since transmission is performed from the power operation training simulator 25 of a training station to the terminal 31 of the control station, when there is a state change or variation not smaller than the judging value.