Control device for railway power conditioner and control system for railway power conditioner

A railway power conditioner carries out power conversion according to the travelling status of a train supplied with power from a railway feeder. A control device for the railway power conditioner CON1 is connected to a first feeder LX1 connected to a load side of a transformer TrS1 in a first railway substation SS1, and a second feeder LX2 connected to a load side of a transformer TrS2 in a second railway substation SS2, and decides an amount of power interchanged between the first and second feeders. The control device decides the amount of power interchanged between the first and second feeders, using the received power in the first railway substation and power on the first feeder, and the received power in the second railway substation and power on the second feeder. The received power PL1, PL2 by the substations is directly measured using voltage transformers PT1A, P2TA and current transformers CT1A, CT2A.