| 摘要 |
PROBLEM TO BE SOLVED: To supply power from a power generation device to a load and a power system while eliminating the need of user operation, reducing cost and saving a space.SOLUTION: A system interconnection PCS 101 comprises: a power conversion part 20 which converts power received from a power generation device and outputs the converted power to a power system; a distribution part 22 which is connected between the power conversion part 20 and the power system, includes a connection with a load Z and supplies at least either the power converted by the power conversion part 20 or power received from the power system through the connection to the load Z; a connection switching part 23 for switching whether to connect the connection and the power system; volt meters Mv1, Mv2, Mv3 and Mv4; ampere meters Ma1 and Ma2; and a control part 151 which controls the power conversion part 20 on the basis of voltages measured by the volt meters and currents measured by the ampere meters, detects a power failure, and disconnects the connection and the power system by controlling the connection switching part 23 when the power failure is detected. |
