Patent ID: 11942787
Assignee: MITSUBISHI ELECTRIC CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A power conversion device disposed between a distributed power supply and an AC distribution system, the power conversion device comprising:
an inverter to convert power output from the distributed power supply into AC power;
an effective voltage calculator to calculate an effective voltage of an AC voltage in the AC distribution system; and
a controller to control active power and reactive power output from the inverter based on the effective voltage, wherein
when a change in the effective voltage is caused by an operation of a system stabilization facility provided in the AC distribution system, the controller controls an operation of the inverter to suppress a change in the reactive power caused by the change in the effective voltage, wherein
the controller includes a system voltage monitor to monitor the effective voltage in the AC distribution system, and
when an amount of change in the effective voltage monitored by the system voltage monitor exceeds a threshold value, the controller determines that the change in the effective voltage is caused by the operation of the system stabilization facility.