BATTERY CONTROL DEVICE, BATTERY CONTROL SUPPORT DEVICE, BATTERY CONTROL SYSTEM, BATTERY CONTROL METHOD, BATTERY CONTROL SUPPORT METHOD, AND RECORDING MEDIUM

• US 20160274607A1
• Filed: 02/06/2014
• Published: 09/22/2016
• Est. Priority Date: 02/08/2013
• Status: Active Grant

• Current Assignee: NEC Corporation
• Original Assignee: NEC Corporation
• Inventors: KUDO, Koji, SAKUMA, Hisato, YANO, Hitoshi, AOKI, Kazuhiko, YANAGITA, Yoshiho, IWASAKI, Yuma, HASHIMOTO, Ryo, SANEYOSHI, Eisuke, TOIZUMI, Takahiro
• Granted Patent: US 10,365,675 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G05F 1/625 wherein it is irrelevant whether the variable actually regulated is ac or dc
• CPC Class Codes: G05F 1/66 Regulating electric power
• CPC Class Codes: H02J 13/00002 characterised by monitoring
• CPC Class Codes: H02J 13/00034 the elements or equipment being or involving an electric power substation
• CPC Class Codes: H02J 2300/20 The dispersed energy generation being of renewable origin
• CPC Class Codes: H02J 2300/22 The renewable source being solar energy
• CPC Class Codes: H02J 3/32 using batteries with converting means
• CPC Class Codes: H02J 3/381 Dispersed generators
• CPC Class Codes: H02J 7/0068 Battery or charger load switching, e.g. concurrent charging and load supply H02J7/0013 takes precedence
• CPC Class Codes: Y02E 10/56 Power conversion systems, e.g. maximum power point trackers
• CPC Class Codes: Y02E 10/76 Power conversion electric or electronic aspects
• 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: Y02E 70/30 Systems combining energy storage with energy generation of non-fossil origin
• CPC Class Codes: Y04S 10/123 the energy generation units being or involving renewable energy sources
• CPC Class Codes: Y04S 10/14 Energy storage units
• CPC Class Codes: Y04S 10/30 State monitoring, e.g. fault, temperature monitoring, insulator monitoring, corona discharge

Abstract

A battery control device controlling an operation of a battery connected to a power system includes detection means that detects battery-related information that shows a state of the battery, or a voltage of an interconnection point of the power system and the battery, first communication means that transmits a detection result of the detection means to an external device, and receives operation control information to control the operation of the battery from the external device, and control means that controls the operation of the battery, based on a state of the power system and the operation control information received by the first communication means.

Claims

1. (canceled)

2. A battery control device controlling an operation of a battery that is connected to a power system, the device comprising:

a detection unit that detects state information that shows a state of said battery;

a first communication unit that transmits a detection result of said detection unit to an external device, and receives from the external device the operation control information to control the operation of said battery that is generated based on;

the detection result of said detection unit, and

a power amount that is allotted to all batteries that are controlled by N (N is a number that is 1 or larger) battery control devices in order to adjust a power amount in said power system; and

a control unit that controls the operation of said battery, based on a state of said power system, and based on the operation control information received by said first communication unit.

3. The battery control device according to claim 2,

wherein said control unit further controls the operation of said battery based on the state information.

4. The battery control device according to claim 2,

wherein said detection unit detects battery information for determining a chargeable and dischargeable capacity of said battery, as the state information,

the operation control information is a ratio of a total amount of chargeable and dischargeable capacities of the batteries controlled by the N battery control devices, and the power amount allotted to all the batteries, and

said control unit determines an adjustment power amount that is obtained by adjusting the power amount, which is determined in accordance with the state of said power system, based on the ratio, and executes charge or discharge with the adjustment power amount for said battery.

5. The battery control device according to claim 2,

wherein said detection unit detects battery information for determining a chargeable and dischargeable capacity of said battery, as the state information,

the operation control information is a ratio of a total amount of chargeable and dischargeable capacities of the batteries controlled by the N battery control devices, and the power amount allotted to all the batteries, and

said control unit determines a correction power amount that is obtained by adjusting the power amount, which is determined in accordance with the state of said power system, based on the ratio and the state information, and executes charge or discharge with the correction power amount for said battery.

6. The battery control device according to claim 3,

wherein said first communication unit receives from the external device correction information, which is generated based on the state information, that shows a charge amount or a discharge amount that brings the state of said battery close to a reference state, and

said control unit controls the operation of said battery based on the correction information received by said first communication unit.

7. The battery control device according to claim 6,

wherein, in a case that, with respect to the charge amounts or the discharge amounts shown in respective pieces of correction information that are transmitted to M (M is a number that is two or more) battery control devices, the charge amount is a positive value and the discharge amount is a negative value, said first communication unit receives a piece of correction information that corresponds to its own device, from among the respective pieces of correction information in each of which a total sum of a charge amount and a discharge amount is zero.

8. The battery control device according to claim 6,

wherein, in a case that, with respect to the charge amounts or the discharge amounts shown in respective pieces of correction information that are transmitted to M (M is a number that is two or more) battery control devices, the charge amount is a positive value and the discharge amount is a negative value, said first communication unit receives a piece of correction information that corresponds to its own device, from among the respective pieces of correction information each of which is generated so that a speed of a change of a total sum of the charge amount and the discharge amount as time elapses becomes an upper limit of a response speed of a power stabilizing operation that is performed by an external power stabilizing device connected to said power system, or becomes lower.

9. The battery control device according to claim 3,

wherein said first communication unit receives operation information, which shows a relation of the state of said power system and an operation content of said battery, from the external device,

said control unit controls the operation of said battery based on the operation information received by said first communication unit,

the state of said power system is expressed in a numeric value,

the operation information is generated by using charge amounts or discharge amounts after correction, which are obtained by correcting the charge amounts or the discharge amounts, which bring states of respective batteries controlled by M (M is a number that is two or larger) battery control devices to target states, so that a total sum of the charge amounts or the discharge amounts of the respective batteries is in a linear relation with respect to the numeric value that shows the state of said power system in a situation in which the numeric value is within a predetermined range, and

the charge amounts or the discharge amounts before correction of the respective batteries are determined based on the state information of the batteries.

10. The battery control device according to claim 3,

wherein said first communication unit receives a reference state of said battery from the external device, and

said control unit controls the operation of said battery based on a difference between the reference state of said battery received by said first communication unit, and the state of said battery shown by the state information.

11. The battery control device according to claim 10,

wherein said first communication unit receives a speed-related state for determining a correction speed, at which the state of said battery is corrected, from the external device, and

said control unit corrects the difference with the speed-related information received by said first communication unit, and controls the operation of said battery based on a result of the correction.

12. The battery control device according to claim 2,

wherein said detection unit detects battery information for determining a chargeable and dischargeable capacity of said battery as the state information.

13. The battery control device according to claim 2,

wherein said control unit controls the operation of said battery based on a difference of the state of said power system with respect to a reference state of said power system.

14. A battery control device controlling an operation of a battery that is connected to a power system, the device comprising:

a detection unit that detects a state of an interconnection point of said power system and said battery;

a first communication unit that transmits a detection result of said detection unit to an external device, and receives from the external device operation control information to control the operation of said battery that is generated based on;

the detection result of said detection unit, and

an adjustment target voltage that is a voltage of a voltage adjustment target spot in said power system; and

a control unit that controls the operation of said battery, based on the state of the interconnection point, and based on the operation control information received by said first communication unit.

15. The battery control device according to claim 14,

wherein said first communication unit receives the operation control information that is correlation information that shows correlation between the state of the interconnection point and the adjustment target voltage,

said control unit calculates the adjustment target voltage from the state of the interconnection point by using the correlation information, and when a result of the calculation is outside a predetermined voltage range, the control unit controls the operation of said battery by using the correlation information so that the adjustment target voltage is within the predetermined voltage range.

16. The battery control device according to claim 15,

wherein said power system is provided with a voltage adjustment device that changes the adjustment target voltage to a voltage within a specific voltage range in the predetermined voltage range when the adjustment target voltage is continuously outside the specific voltage range for a specific time period, and

when the result of the calculation is larger than an upper limit value of the predetermined voltage range, said control unit controls the operation of said battery by using the correlation information so that the adjustment target voltage is included in a range between the upper limit value and an upper limit value of the specific voltage range, and when the result of the calculation is smaller than a lower limit value of the predetermined voltage range, said control unit controls the operation of said battery by using the correlation information so that the adjustment target voltage is included in a range between the lower limit value and a lower limit value of the specific voltage range.

17. (canceled)

18. A battery control support device communicating with a battery control device controlling an operation of a battery connected to a power system, the device comprising:

a second communication unit that communicates with said battery control device, and receives state information showing a state of said battery from each of N (N is an integer that is one or larger) battery control devices,

a recognition unit that recognizes a power amount that is allotted to all batteries that are controlled by the N battery control devices in order to adjust a power amount in said power system, and

a processing unit that generates operation control information to control the operation of said battery, based on the state information and the power amount that is recognized by said recognition unit, and transmits the operation control information from said second communication unit to said battery control device.

19. The battery control support device according to claim 18,

wherein the state information is battery information for determining a chargeable and dischargeable capacity of said battery, and

said processing unit generates a ratio of a total amount of chargeable and dischargeable capacities of the batteries controlled by the N battery control devices, and the power amount allotted to all of said batteries, as the operation control information.

20. The battery control support device according to claim 18,

wherein said processing unit generates correction information that shows a charge amount or a discharge amount that brings the state of said battery close to a reference state, based on the state information, and transmits the correction information from said second communication unit to said battery control device.

21. The battery control support device according to claim 20,

wherein the number N of said battery control devices is M (M is an integer that is two or larger), and

said processing unit generates each piece of correction information in which a total sum of a charge amount and a discharge amount becomes zero when the charge amount is a positive value and the discharge amount is a negative value with respect to the charge amount or the discharge amount shown in each piece of the correction information.

22. The battery control support device according to claim 20,

wherein the number N of said battery control devices is M (M is an integer that is two or larger), and

said processing unit generates each piece of correction information so that a speed of a change of a total sum of a charge amount and a discharge amount as time elapses becomes an upper limit of a response speed of a power stabilizing operation performed by an external power stabilizing device connected to said power system, or becomes lower, when the charge amount is a positive value and the discharge amount is a negative value, with respect to the charge amount or the discharge amount shown in each piece of the correction information.

23. The battery control support device according to claim 18,

wherein the number N of said battery control devices is M (M is an integer that is two or larger),

the state of said power system is expressed in a numeric value,

said processing unit:

determines a charge amount or a discharge amount that brings the state of said battery close to a target state based on the state information of said battery, for each of said batteries,

corrects the charge amounts or the discharge amounts so that a total sum of the charge amounts or the discharge amounts of the respective batteries is in a linear relation with respect to the numeric value in a situation in which the numeric value showing the state of said power system is within a predetermined range,

generates operation information that shows a relation between the state of said power system and operation contents of said batteries by using the charge amounts or the discharge amounts after correction, and

transmits the operation information from said second communication unit to said battery control devices.

24. The battery control support device according to claim 18,

wherein said processing unit transmits a reference state of said battery from said second communication unit to said battery control device.

25. The battery control support device according to claim 24,

wherein said processing unit transmits speed-related information for determining a correction speed, at which the state of said battery is corrected, from said second communication unit to said battery control device.

26. The battery control support device according to claim 18,

wherein said recognition unit accepts power amount information for determining power amounts, which are allotted to all of said batteries controlled by the N battery control devices, from an external control device that controls said power system.

27. The battery control support device according to claim 26,

wherein the state information is battery information for determining a chargeable and dischargeable capacity of said battery, and

said recognition unit transmits notification information that shows a total amount of chargeable and dischargeable capacities of batteries that are controlled by the N battery control devices, said total amount being determined by the state information from the N battery control devices, to the external control device, and receives the power amount information, which reflects the total amount of the chargeable and dischargeable amounts, from the external control device.

28. A battery control support device communicating with a battery control device controlling an operation of a battery connected to a power system, the device comprising:

a second communication unit that communicates with said battery control device, and receives a state of an interconnection point of said power system and said battery;

a recognition unit that recognizes an adjustment target voltage that is a voltage of a voltage adjustment target spot in said power system; and

a processing unit that generates operation control information to control the operation of said battery, based on the state of the interconnection point and the adjustment target voltage that is recognized by said recognition means, and transmits the operation control information from said second communication means to said battery control device.

29. The battery control support device according to claim 28,

wherein said processing unit generates correlation information that shows a correlation between the state of the interconnection point and the adjustment target voltage recognized by said recognition unit, as the operation control information.

30. A battery control system comprising a first control device that controls an operation of a battery connected to a power system, and a second control device that communicates with the first control device,

wherein said first control device comprises:

a detection unit that detects state information that shows a state of said battery,

a first communication unit that transmits a detection result of said detection unit to said second control device, and receives from said second control device operation control information to control the operation of the battery that is generated based on;

the detection result of said detection unit, and

a power amount that is allotted to all batteries that are controlled by N (N is a number that is 1 or larger) first control devices in order to adjust a power amount in said power system, and

a control unit that controls the operation of the battery based on a state of the power system and based on the operation control information received by said first communication unit, and

said second control device comprises;

a second communication unit that communicates with said first control unit, and receives the state information from each of the N first control devices,

a recognition unit that recognizes the power amount that is allotted to all batteries that are controlled by the N first control devices in order to adjust a power amount in said power system, and

a processing unit that generates the operation control information based on the state information received by said second communication unit and based on the power amount recognized by said recognition unit, and transmits the operation control information from said second communication unit to said first control device.

31. A battery control method that is performed by a battery control device that controls an operation of a battery connected to a power system, the method comprising:

detecting state information that shows a state of the battery;

transmitting the state information to an external device, and receiving from the external device operation control information to control the operation of the battery that is generated based on;

the state information, and

a power amount that is allotted to all batteries that are controlled by N (N is a number that is 1 or larger) battery control devices in order to adjust a power amount in said power system; and

controlling the operation of the battery based on a state of the power system and the operation control information.

32. A battery control support method that is performed by a battery control support device that communicates with a battery control device that controls an operation of a battery connected to a power system, the method comprising:

receiving state information that shows a state of the battery from each of N (N is an integer that is one or larger) battery control devices;

recognizing a power amount that is allotted to all batteries that are controlled by the N battery control devices in order to adjust a power amount in said power system; and

generating operation control information to control the operation of the battery, based on the state information and the power amount that is allotted to all batteries, and transmitting the operation control information to the battery control device.

33. A battery control method that is performed by a battery control system including a first control device that controls an operation of a battery connected to a power system, and a second control device that communicates with the first control device, wherein:

the first control device detects state information that shows a state of the battery,

the second control device recognizes a power amount that is allotted to all batteries that are controlled by N (N is a number that is 1 or larger) first control devices in order to adjust a power amount in said power system,

the first control device transmits the state information to the second control device,

the second control device receives the state information from the N first control devices,

the second control device generates operation control information to control the operation of the battery, based on the state information and the power amount that is allotted to all batteries,

the second control device transmits the operation control information to the first control device,

the first control device receives the operation control information, and

the first control device controls the operation of the battery, based on a state of the power system and the operation control information.

34. A non-transitory computer-readable recording medium recording a program for causing a computer to execute:

a detection procedure of detecting state information that shows a state of a battery connected to a power system;

a communication procedure of transmitting the state information to an external device, and receiving from the external device operation control information to control an operation of the battery that is generated based on;

the state information, and

a power amount that is allotted to all batteries that are controlled by N (N is a number that is 1 or larger) computers in order to adjust a power amount in said power system; and

a control procedure of controlling the operation of the battery, based on a state of the power system and the operation control information.

35. A non-transitory computer-readable recording medium recording a program for causing a computer to execute:

a reception procedure of receiving state information that shows a state of a battery, from each of N (N is a number that is 1 or larger) battery control devices that control an operation of the battery connected to a power system;

a recognition procedure of recognizing a power amount that is allotted to all batteries that are controlled by the N battery control devices in order to adjust a power amount in said power system; and

a processing procedure of generating operation control information to control the operation of the battery, based on the state information and the power amount that is allotted to all batteries, and transmitting the operation control information to the battery control device.