POWER MANAGEMENT METHOD, POWER MANAGEMENT APPARATUS, POWER CONVERSION APPARATUS, AND POWER MANAGEMENT SYSTEM

A power management method includes step A of performing communication of a predetermined command using a predetermined protocol between a power conversion apparatus and a power management apparatus. The power conversion apparatus is connected to first and second distributed power sources. The method further includes step B of converting, by the power conversion apparatus, DC power from the first and second distributed power sources into AC power. The step A includes a step of performing, in a manner capable of identifying a connection rated output of the power conversion apparatus in a grid connection state and a self-sustained rated output of the power conversion apparatus in a self-sustained operation state, communication of a command including an information element designating at least one of the connection rated output of the power conversion apparatus and the self-sustained rated output of the power conversion apparatus, as the communication of the predetermined command.