ELECTRIC POWER INTERCHANGE SYSTEM

• US 20120233060A1
• Filed: 11/02/2010
• Published: 09/13/2012
• Est. Priority Date: 11/06/2009
• Status: Active Grant

• Current Assignee: Panasonic Intellectual Property Management Co., Ltd. (Panasonic Holdings Corporation)
• Original Assignee: Panasonic Corporation (Panasonic Holdings Corporation)
• Inventors: Terano, Masaaki, Ichii, Yoshitaka
• Granted Patent: US 8,990,114 B2
• Time in Patent Office: Days
• US Class Current: 705/37
• CPC Class Codes: G06Q 30/06 Buying, selling or leasing transactions
• CPC Class Codes: G06Q 50/06 Energy or water supply
• CPC Class Codes: H02J 3/008 involving trading of energy or energy transmission rights
• CPC Class Codes: Y04S 50/10 Energy trading, including energy flowing from end-user application to grid

Abstract

In a power interchange system, a power generated by a power generation device is interchanged between power consumers which receive an electric power supply from a power supply system. The amount of electric power sold by a power consumer is defined as an amount of selling power, and the amount of electric power that the power consumer demands from another electricity consumer is defined as an amount of purchasing power. Power interchange groups are formed, in which power consumers interchanges an electric power thereamong, and each power consumer is provided with a power control device which manages the electric power from the power generation device.

Claims

1. A power interchange system for enabling a plurality of power consumers, 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 consumers 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 consumers, trades a power with one or more power consumers 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.

2. The power interchange system of claim 1, wherein:

the plurality of the power consumers forms a power interchanging group; and

the power control device of each power consumer manages the power from the power generation device in the corresponding power consumer, transmits and receives the power selling amount information and the power purchasing amount information to and from the other power consumers in the power interchanging group, establishes a power trade between two or more of the power consumers 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 consumer which sells the power and the one or more power consumers which purchase the power.

3. The power interchange system of claim 2, wherein the power control device has a function of setting a power trading condition between specific power consumers in advance, and executes a power trade between the specific power consumers based on the set power trading condition.

4. The power interchange system of claim 2, wherein each of the power consumers further comprises a battery for storing the power generated by the power generation device, and calculates the amount of the selling power based on an amount of a power stored in the battery above a threshold value.

5. The power interchange system of claim 2, wherein the amount of the selling power is a difference between an amount of the power generated by the power generation device and an amount of a power consumed by the corresponding power consumer when the amount of the generated power is larger than the amount of the consumed power.

6. The power interchange system of claim 2, wherein an electricity meter for measuring an amount of a power flowing through a base portion is provided in the base portion of the power supply system, the base portion being provided at upstream of a power supply junction branching into the individual power consumers, and the power trade by the power control device is restrained when a reverse flow of a current is detected by the electricity meter.