ELECTRIC POWER CONTROL METHOD AND ELECTRIC POWER CONTROL DEVICE

• US 20150340900A1
• Filed: 05/14/2015
• Published: 11/26/2015
• Est. Priority Date: 05/21/2014
• Status: Active Grant

• Current Assignee: Panasonic Intellectual Property Management Co., Ltd. (Panasonic Holdings Corporation)
• Original Assignee: Panasonic Intellectual Property Management Co., Ltd. (Panasonic Holdings Corporation)
• Inventors: SUGIMOTO, TAKAHIRO, FUNAKURA, MASAMI, ZHANG, WEI
• Granted Patent: US 9,685,788 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H02J 2310/64 The condition being economic, e.g. tariff based load management
• CPC Class Codes: H02J 3/14 by switching loads on to, or off from, network, e.g. progressively balanced loading
• CPC Class Codes: H02J 3/32 using batteries with converting means
• CPC Class Codes: Y02B 70/3225 Demand response systems, e.g. load shedding, peak shaving
• CPC Class Codes: Y04S 20/222 Demand response systems, e.g. load shedding, peak shaving
• CPC Class Codes: Y04S 50/10 Energy trading, including energy flowing from end-user application to grid

Abstract

An electric power control method for an electric power load and an electric power storage device including assigning one of a peak shaving control or other services to at least one of time slots that are divided by a specific time unit, obtaining a consumption power of the electric power load of each of the time slots, determining power-purchase electric power according to the consumption power of each of the time slots, restricting a consumption power of the electric power load at one or more peak slots where the consumption power of the electric power load is more than or equal to a target power-purchase electric power upper limit, restricting the restricted consumption power of the electric power load and discharging the electric power storage device at one or more peak slots if the restricted consumption power of the electric power load is more than or equal to a target power-purchase electric power upper limit and the peak shaving is assigned.

Claims

1. An electric power control method for an electric power load and an electric power storage device disposed in customer, the method comprising:

assigning one of a peak shaving control or other services to at least one of time slots that are divided by a specific time unit;

obtaining a consumption power of the electric power load of each of the time slots;

determining power-purchase electric power according to the consumption power of each of the time slots;

restricting a consumption power of the electric power load at one or more peak slots where the consumption power of the electric power load is more than or equal to a target power-purchase electric power upper limit;

restricting the restricted consumption power of the electric power load and discharging the electric power storage device at one or more peak slots if the restricted consumption power of the electric power load is more than or equal to a target power-purchase electric power upper limit and the peak shaving is assigned.

2. The electric power control method according to claim 1, further comprising receiving an environmental index changing in accordance with output of the electric power load, and restricting the consumption power of the electric power load when the environmental index is within a predetermined range.

3. The electric power control method according to claim 2, wherein discharging the electric power storage device and increasing the consumption power of the electric power load furthermore when the environmental index is outside the predetermined range.

4. The electric power control method according to claim 1, wherein increasing the electric power consumption of the electric power load before the time slot in which the consumption power of the electric power load is more than or equal to a target power-purchase electric power upper limit.

5. The electric power control method according to claim 1, wherein discharging the electric power storage device within a scope in which a remaining capacity required to perform the other service if the other service is assigned after the peak shaving in the peak slots.

6. The electric power control method according to claim 1, wherein determining power-purchase electric power after the peak slots, and discharging the electric power storage device after the peak slots if power-purchase electric power is more than or equal to a target power-purchase electric power upper limit and the peak shaving is assigned.

7. The electric power control method according to claim 1, wherein stopping restricting a consumption power of the electric power load after the slots where the consumption power of the electric power load is more than or equal to a target power-purchase electric power upper limit;

8. An electric power control device for an electric power load and an electric power storage device, the device comprising:

one or more memories; and

circuitry operative to;

assign one of a peak shaving control or other services to at least one of time slots that are divided by a specific time unit;

obtain a consumption power of the electric power load of each of the time slots;

determine power-purchase electric power according to the consumption power of each of the time slots;

restrict a consumption power of the electric power load at one or more peak slots where the consumption power of the electric power load is more than or equal to a target power-purchase electric power upper limit;

restrict the restricted consumption power of the electric power load and discharging the electric power storage device at one or more peak slots if the restricted consumption power of the electric power load is more than or equal to a target power-purchase electric power upper limit and the peak shaving is assigned.