CONTROL APPARATUS

• US 20130229057A1
• Filed: 03/26/2013
• Published: 09/05/2013
• Est. Priority Date: 11/02/2010
• Status: Abandoned Application

• Current Assignee: Panasonic Intellectual Property Management Co., Ltd. (Panasonic Holdings Corporation)
• Original Assignee: Sanyo Electric Company Limited (Panasonic Holdings Corporation)
• Inventors: TAIMA, Kenji
• Application Number:
  US13/850,625
• Publication Number:
  US 20130229057A1
• Time in Patent Office: Days
• US Class Current: 307/19
• CPC Class Codes: H02J 3/32 using batteries with converting means
• CPC Class Codes: H02J 7/0068 Battery or charger load switching, e.g. concurrent charging and load supply H02J7/0013 takes precedence

Abstract

Provided is a control apparatus for an ancillary service that utilizes storage batteries. The control apparatus, which is for controlling charging/discharging between a power storage unit and a power grid, and of discharging from the power storage unit to a load, allots the rechargeable batteries to a power-grid power-storage section that is for controlling discharging to the power grid on the basis of the amount of economical profit to be raised by this control and/or the state of rechargeable batteries contained in the power storage unit, and to a load power-storage section that is for controlling discharging to the load, to control discharging from the power-grid power-storage section to the power grid, and discharging from the load power-storage section to the load.

Claims

1. A control apparatus which performs control for charging or discharging between a power storage device and a power grid and discharging from the power storage device to a load,

wherein the control apparatus, on the basis of at least one of an amount of economical profit to be obtained by the control and a state of storage batteries included in the power storage device, allocates the storage batteries to a power-grid power-storage section for controlling discharging to the power grid and a load power-storage section for controlling discharging to the load, to control discharging from the power-grid power-storage section to the power grid and discharging from the load power-storage section to the load.

2. The control apparatus according to claim 1, wherein the power storage device includes a plurality of storage batteries, and

the plurality of storage batteries are grouped into storage batteries allocated to the power-grid power-storage section and storage batteries allocated to the load power-storage section.

3. The control apparatus according to claim 1, wherein

a first ratio of a storage power amount of the storage batteries is allocated to the power-grid power-storage section, and a second ratio of a storage power amount of the storage batteries is allocated to the load power-storage section.

4. The control apparatus according to claim 1, wherein

the control for charging and discharging between the power grid and the power storage device is performed on the basis of a charging and discharging instruction externally provided, and

the control for discharging from the power storage device to the load is performed on the basis of power required by the load.

5. The control apparatus according to claim 4, wherein

when the control for charging and discharging is being performed on the basis of the charging and discharging instruction externally provided, and the power required by the load within a predetermined time period from a predetermined time after the allocation between the power-grid power-storage section and the load power-storage section is temporarily performed on the basis of the amount of economical profit to be obtained by the control, the allocation between the power-grid power-storage section and the load power-storage section is modified on the basis of the amount of storage power of the storage batteries and economical loss to be caused by supplying power to the load from a commercial power source.

6. The control apparatus according to claim 4, wherein

the amount of economical profit to be obtained by the control includes power-grid side estimated profit, which is an estimated value of an amount of profit to be obtained when charging and discharging is performed between the power grid and the power storage device, and load side estimated profit, which is an estimated value of an amount of profit to be obtained when discharging is performed from the power storage device to the load, and

the control apparatus performs allocation between the power-grid power-storage section and the load power-storage section on the basis of the power-grid side estimated profit and the load side estimated profit.

7. The control apparatus according to claim 6, wherein

the power-grid side estimated profit is an estimated value of an amount of economical profit based on past profit information which was obtained when the control for charging and discharging was performed between the power grid and the power storage device in the past.

8. The control apparatus according to claim 6, wherein

the load side estimated profit is an estimated value of an amount of economical profit based on past profit information which was obtained when the power storage device was used in place of a commercial power source as a power supply source to the load.

9. The control apparatus according to claim 6, wherein

the load side estimated profit is an estimated value of an amount of economical profit based on past profit information which was obtained when peak-cut processing was performed in which the power storage device was used in place of a commercial power source as a power supply source to the load at the peak of the power required by the load.

10. The control apparatus according to claim 6, wherein

when the control for charging and discharging is performed on the basis of the charging and discharging instruction externally provided, and the power required by the load within a predetermined time period from a predetermined time after the allocation between the power-grid power-storage section and the load power-storage section is temporarily performed, the control for charging and discharging the storage batteries of the power storage device is performed such that the State of Charge (SOC) of the power storage device remains within an appropriate range.

11. The control apparatus according to claim 6, wherein

when the control for charging and discharging is being performed on the basis of the charging and discharging instruction externally provided, and the power required by the load within a predetermined time period from a predetermined time after the allocation between the power-grid power-storage section and the load power-storage section is temporarily performed, the allocation between the power-grid power-storage section and the load power-storage section is modified, when the load side estimated profit and the power-grid side estimated profit differ from respective actual amounts of profit, in accordance with the actual amounts of profit.