Grid Interconnection Device And Power Control System

• US 20100213762A1
• Filed: 02/26/2010
• Published: 08/26/2010
• Est. Priority Date: 02/26/2009
• Status: Active Grant

• Current Assignee: Sanyo Electric Company Limited (Panasonic Holdings Corporation)
• Original Assignee: Sanyo Electric Company Limited (Panasonic Holdings Corporation)
• Inventors: MAKINO, Masahiro, HIRATA, Toshiyuki, ITOH, Kazuo
• Granted Patent: US 8,319,370 B2
• Time in Patent Office: Days
• US Class Current: 307/18
• CPC Class Codes: H02J 13/00016 using a wired telecommunication network or a data transmission bus
• CPC Class Codes: H02J 13/00034 the elements or equipment being or involving an electric power substation
• CPC Class Codes: H02J 3/12 for adjusting voltage in ac networks by changing a characteristic of the network load
• CPC Class Codes: H02J 3/381 Dispersed generators
• CPC Class Codes: Y02E 40/70 Smart grids as climate change mitigation technology in the energy generation sector
• CPC Class Codes: Y02E 60/00 Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
• CPC Class Codes: Y04S 10/12 Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
• CPC Class Codes: Y04S 10/16 Electric power substations
• CPC Class Codes: Y04S 40/124 using wired telecommunication networks or data transmission busses

Abstract

A grid interconnection device 100 comprises a receiver configured to receive an adjustment instruction and a controller configured to control a backward flow power on the basis of the adjustment instruction. The adjustment instruction includes group information indicating an application group to which the adjustment instruction is applied among a plurality of groups G. Customers 30 (each includes a power supply device) are grouped depending on the distance from a substation.

Claims

1. A grid interconnection device connected to a power distribution system electrically connecting a power distribution facility to a plurality of power supply devices, and connected to one of the plurality of power supply devices, the grid interconnection device configured to control backward flow power that is reversely provided from the one power supply device to the power distribution system, the grid interconnection device comprising:

a receiver configured to receive an adjustment instruction that is transmitted through a predetermined transmission path and that is an instruction to adjust the backward flow power; and

is a controller configured to control the backward flow power on the basis of the adjustment instruction, wherein

the adjustment instruction includes group information indicating an application group to which the adjustment instruction is applied among a plurality of groups formed by grouping the plurality of power supply devices depending on the distance from the power distribution facility, and

the controller controls the backward flow power on the basis of the adjustment instruction when an own group is designated as the application group by the group information.

2. A power control system comprising:

a power distribution facility configured to distribute alternating current power to a power distribution system; and

a plurality of customers each including a power supply device and a grid interconnection device configured to control backward flow power that is reversely provided from the power supply device to the power distribution system, wherein

the power distribution facility comprises;

an instruction generator configured to generate an adjustment instruction that is an instruction to adjust the backward flow power; and

a transmitter configured to transmit the adjustment instruction through a predetermined transmission path,

the plurality of customers are grouped into a plurality of groups depending on the distance from the power distribution facility, and

the grid interconnection device comprises;

a receiver configured to receive the adjustment instruction through the predetermined transmission path;

is a determination unit configured to determine whether or not an own group to which its customer belongs to is designated as an application group to which the adjustment instruction is applied among the plurality of groups, on the basis of group information included in the adjustment instruction and indicating the application group; and

a controller configured to control the backward flow power on the basis of the adjustment instruction when the determination unit determines that the own group is designated as the application group.

3. The power control system according to claim 2, wherein the group information indicates that the application group is a first group in the plurality of groups including the first group and a second group.

4. The power control system according to claim 2, wherein each of the plurality of groups comprises at least one customer provided with a power storage device as the power supply device.

5. The power control system according to claim 2, wherein

the plurality of groups include a first group and a second group having a smaller power storage capacity than the first group, and

in response to the adjustment instruction, the second group is allowed to provide the backward flow power for a longer time period than the first group.

6. The power control system according to claim 2, wherein

the plurality of groups include a first group and a second group having a smaller power storage capacity than the first group, and

the first group is closer to the power distribution facility than the second group.