Patent ID: 9671842
Date: 2017-06-06
CPC Classifications: G06F,H02J,Y02P

Claim:
1. A control device for a plurality of distributed generators connected to a main grid, the control device comprising: a load power measuring unit measuring power consumption of loads connected to the plurality of distributed generators; a distributed generator power measuring unit measuring power output from the plurality of distributed generators; a power flow reference value determining unit determining a power flow reference value of a power line connected to the main grid based on the power consumption and the power output from the plurality of distributed generators; and a mode control unit changing an operation mode of at least one of the plurality of distributed generators such that a flow power of the power line connected to the main grid maintains the power flow reference value, wherein the plurality of distributed generators operate in a first mode in which the flow power of the power line is constantly maintained, or in a second mode in which the power output from the plurality of distributed generators are constantly maintained, and wherein, when the determined power flow reference value exceeds a maximum value, the power flow reference value determining unit changes the power flow reference value to the maximum value.