GRID SYSTEM, CONTROL DEVICE, CONTROL METHOD FOR GRID SYSTEM, AND POWER CONVERSION DEVICE

A grid system includes a voltage source, a plurality of consumers connected to the voltage source via a distribution grid, and a grid control unit for transmitting a power command value to a device provided to each consumer. The consumer is provided with a power generation device, a power storage device, and power conversion devices for converting respective powers of the power generation device and the power storage device. The power conversion devices respectively include power command correction means for correcting the power command value from the grid control unit on the basis of the frequency of voltage at a power receiving point X which is a connection point between the consumer and the distribution grid. The power command value for the power conversion device of the power generation device is set to be greater than the power command value for the power conversion device of the power storage device.