Patent ID: 8990114
Filing Date: 2015-03-24
Classification: G06Q,H02J,Y04S

Abstract:
1. A power interchange system for enabling a plurality of power consuming units, which are supplied with a power from a power supply system, to interchange a power generated by their power generation devices among themselves, wherein each of the power consuming units comprises a power control device which transmits and receives power selling amount information indicating an amount of a selling power and power purchasing amount information indicating an amount of a purchasing power to and from the other power consuming units, trades a power with one or more power consuming units based on the power selling amount information and the power purchasing amount information and issues an instruction to discharge a power corresponding to the amount of the selling power to the power supply system based on a power trading condition, wherein: the plurality of the power consuming units form a power interchanging group; the power control device of each power consuming unit manages the power from the power generation device in the corresponding power consuming unit, transmits and receives the power selling amount information and the power purchasing amount information to and from the other power consuming units in the power interchanging group, establishes a power trade between two or more of the power consuming units based on the power selling amount information and the power purchasing amount information, and issues an instruction to discharge a power corresponding to the amount of the selling power to the power supply system based on the power trading condition that have been made between the corresponding power consuming unit which sells the power and the one or more power consuming units which purchase the power; each of the power consuming units further comprises a battery for storing the power generated by the power generation device; when a charge level of the battery exceeds a first threshold value, each of the power consuming units determines the amount of the selling power based on an amount of a power stored in the battery above the first threshold value; when the charge level of the battery is lower than a second threshold value, each of the power consuming units determines the amount of the purchasing power based on an amount of a power corresponding to a shortage to reach the second threshold value.