POWER ROUTER, POWER NETWORK SYSTEM, POWER ROUTER OPERATION CONTROL METHOD, AND NON-TRANSITORY COMPUTER READABLE MEDIUM HAVING POWER ROUTER OPERATION CONTROL PROGRAM STORED THEREON

• US 20150311711A1
• Filed: 09/24/2013
• Published: 10/29/2015
• Est. Priority Date: 12/10/2012
• Status: Abandoned Application

• Current Assignee: NEC Corporation
• Original Assignee: NEC Corporation
• Inventors: OKABE, Toshiya
• Application Number:
  US14/650,649
• Publication Number:
  US 20150311711A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G05B 15/02 electric
• CPC Class Codes: H02J 13/00006 characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
• CPC Class Codes: H02J 2203/20 Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
• CPC Class Codes: H02J 3/00 Circuit arrangements for ac mains or ac distribution networks
• CPC Class Codes: H02M 1/008 Plural converter units for generating at two or more independent and non-parallel outputs, e.g. systems with plural point of load switching regulators
• CPC Class Codes: H02M 7/757 using semiconductor devices only
• CPC Class Codes: Y02B 90/20 Smart grids as enabling technology in buildings sector smart grids supporting the management or operation of end-user stationary applications in general, or like technologies with no associated climate change mitigation effect Y04S20/00
• CPC Class Codes: Y02E 60/00 Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
• CPC Class Codes: Y04S 40/12 characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment

Abstract

A power router is adequately managed or controlled to construct a power network system in which power cells are asynchronously connected with each other. A first leg (11) to a fourth leg (14) each include one end connected to a direct current bus (101), include an other end as an external connection terminal connected to an external connection party, and have a function of bidirectionally converting power. The control unit (19) controls an operation of each of the first leg (11) to the fourth leg (14). The control unit (19) includes a storage unit (191) and a CPU (192). The storage unit (191) includes a leg identification information database (194) including identification information of the first leg (11) to the fourth leg (14). The CPU (192) outputs an operation instruction to an instruction destination leg referring to the identification information of the leg identification information database (194).

Claims

1. A power router comprising:

a direct current bus that maintains a voltage at a predetermined voltage rating;

a plurality of power converting legs that each include a first connection terminal connected to the direct current bus, include a second connection terminal connected as an external connection terminal to an external connection party and include a function of bidirectionally converting power between the first connection terminal and the second connection terminal; and

a control unit that controls an operation of each of the plurality of power converting legs, wherein

the control unit includes first storage unit that holds first database that includes identification information of each of the plurality of power converting legs, and executes the operation of each of the power converting legs referring to the identification information of the first database.

2. The power router according to claim 1, wherein the identification information includes a type of an operation mode of each of the power converting legs.

3. The power router according to claim 2, wherein the operation mode includes at least an operation mode of maintaining the voltage of the direct current bus.

4. The power router according to claim 2, wherein

the first storage unit further holds a second database that includes an operation instruction specified by a management server, with respect to each of the plurality of power transforming legs, and

the control unit further includes a first arithmetic operation unit that reads the operation instruction with respect to each of the plurality power converting legs, from the second database, and outputting the operation instruction to each of the plurality of power converting legs referring to the identification information of the first database.

5. The power router according to claim 4, wherein

the second database includes information for specifying the operation mode of each of the plurality of power converting legs, and

the first arithmetic operation unit controls the operation mode of each of the plurality of power converting legs based on the second database.

6. The power router according to claim 4, wherein, in a situation that an additional power converting leg that includes a second storage unit that includes identification information of the additional power converting leg and that is other than the plurality of power converting legs is added,

the first arithmetic operation unit outputs a response request instruction to the additional power converting leg,

the additional power converting leg outputs the identification information of the additional power converting leg from the second storage unit to the first arithmetic operation unit, in response to the response request instruction, and

the first arithmetic operation unit embeds the received identification information of the additional power converting leg, in the first database to update.

7. The power router according to claim 6, wherein the first arithmetic operation unit notifies the management server of that the additional power converting leg has been added.

8. The power router according to claim 6, wherein

the plurality of power converting legs each include the second storage unit,

the second storage unit of each of the plurality of power converting legs holds a parameter for calculating operation performance of each of the power converting legs in which the second storage unit is embedded,

the plurality of power converting legs each output the parameter for calculating the operation performance of each of the power converting legs, to the first arithmetic operation means in response to the response request instruction, and

the first arithmetic operation unit calculates the operation performance of each of the plurality of power converting legs based on the received parameter for calculating the operation performance,

causes the first storage unit as a third database to hold the calculated operation performance of each of the plurality of power converting legs,

compares the operation performance of each of the plurality of power converting legs included in the third database, and the operation instruction included in the second database, and

notifies the management server of that the request is unacceptable when the operation instruction exceeds the operation performance.

9. The power router according to claim 8, wherein

the second storage unit of the additional power converting leg holds a parameter for calculating operation performance of the additional power converting leg,

the additional power converting leg further outputs the parameter for calculating the operation performance of the additional power converting leg, to the first arithmetic operation unit in response to the response request instruction, and

the first arithmetic operation unit calculates the operation performance of the additional power converting leg based on the parameter for calculating the operation performance of the additional power converting leg,

causes the first storage unit as the third database to hold the calculated operation performance,

compares the operation performance of the additional power converting leg included in the third database, and the operation instruction included in the second database, and

notifies the management server of that the request is unacceptable when the operation instruction exceeds the operation performance.

10. The power router according to claim 4, wherein

the plurality of power converting legs each include a second storage unit,

the second storage unit of each of the plurality of power converting legs holds a parameter for calculating operation performance of each of the power converting legs in which the second storage unit is embedded,

the first arithmetic operation unit outputs a response request instruction to the plurality of power converting legs,

the plurality of power converting legs each output the parameter for calculating operation performance of each of the power converting legs, to the first arithmetic operation unit in response to the response request instruction, and

the first arithmetic operation unit calculates the operation performance of each of the plurality of power converting legs, based on the received parameter for calculating the operation performance,

causes the first storage unit as a third database to hold the calculated operation performance of each of the plurality of power converting legs,

compares the operation performance of each of the plurality of power converting legs included in the third database, and the operation instruction included in the second database, and

notifies the management server of that the request is unacceptable when the operation instruction exceeds the operation performance.

11. The power router according to claim 6, wherein

the plurality of power converting legs each include the second storage unit and a second arithmetic operation unit,

the second storage unit of each of the plurality of power converting legs holds a parameter for calculating operation performance of each of the power converting legs in which the second storage unit is embedded,

the first arithmetic operation unit outputs a parameter of the power router for calculating the operation performance of each of the plurality of converting legs, to each of the plurality of power converting legs,

the second arithmetic operation unit of each of the plurality of power converting legs calculates the operation performance of each of the power converting legs in response to the response request instruction and the parameter of the power router, and outputs the operation performance to the first arithmetic operation unit, and

the first arithmetic operation unit causes the first storage unit as a third database to hold the received operation performance of each of the plurality of power converting legs,

compares the operation performance of each of the plurality of power converting legs included in the third database, and the operation instruction included in the second database, and

notifies the management server of that the request is unacceptable when the operation instruction exceeds the operation performance.

12. The power router according to claim 11, wherein

the additional power converting leg further includes the second arithmetic operation unit,

the second storage unit of the additional power converting leg holds a parameter for calculating operation performance of the additional power converting leg,

the first arithmetic operation unit further outputs to the additional power converting leg a parameter of the power router for calculating the operation performance of the additional power converting leg,

the second arithmetic operation unit of the additional power converting leg calculates the operation performance of the additional power converting leg in response to the response request instruction and the parameter of the power router, and outputs the operation performance to the first arithmetic operation unit, and

the first arithmetic operation unit causes the first storage unit as the third database to hold the received operation performance of the additional power converting leg,

compares the operation performance of the additional power converting leg included in the third database, and the operation instruction included in the second database, and

notifies the management server of that the request is unacceptable when the operation instruction exceeds the operation performance.

13. The power router according to claim 4, wherein

the plurality of power converting legs each include a second storage unit and a second arithmetic operation unit,

the second storage unit of each of the plurality of power converting legs holds a parameter for calculating operation performance of each of the power converting legs in which the second storage unit is embedded,

the first arithmetic operation unit outputs to each of the plurality of power converting legs a response request instruction, and a parameter of the power router for calculating the operation performance of each of the plurality of power converting legs,

the second arithmetic operation unit of each of the plurality of power converting legs calculates the operation performance of each of the power converting legs in response to the response request instruction and the parameter of the power router, and outputs the operation performance to the first arithmetic operation unit, and

the first arithmetic operation unit causes the first storage unit as a third database to hold the received operation performance of each of the plurality of power converting legs,

compares the operation performance of each of the plurality of power converting legs included in the third database, and the operation instruction included in the second database, and

notifies the management server of that the request is unacceptable when the operation instruction exceeds the operation performance.

14. The power router according to claim 6, wherein

the plurality of power converting legs each include the second storage unit,

the second storage unit of the plurality of power converting legs holds determination target information indicating whether or not each of the power converting legs in which the second storage unit is embedded is compatible with the power router,

the first storage unit further holds a fourth database that includes compatibility determination information that serves as a criterion for determining whether or not the additional power converting leg is compatible with the power router,

in a situation that the additional power converting leg is added,

the plurality of power converting legs each output the determination target information to the first arithmetic operation unit in response to the response request instruction, and

the first arithmetic operation unit compares the compatibility determination information and the determination target information, and

does not cause the additional power converting leg to operate when the compatibility determination information and the determination target information do not match.

15. The power router according to claim 14, wherein, when the compatibility determination information and the determination target information do not match, the first arithmetic operation unit embeds an incompatibility flag of the additional power converting leg in the fourth database,

does not cause a power converting leg corresponding to the incompatibility flag.

16. The power router according to claim 8, wherein

the second storage unit of the additional power converting leg holds determination target information indicating whether or not the additional power converting leg is compatible with the power router,

the first storage unit further holds a fourth database that includes compatibility determination information that serves as a criterion for determining whether or not the additional power converting leg is compatible with the power router,

in a situation that the additional power converting leg is added,

the additional power converting leg outputs the determination target information to the first arithmetic operation unit in response to the response request instruction, and

the first arithmetic operation unit compares the compatibility determination information and the determination target information, and

does not cause the additional power converting leg to operate when the compatibility determination information and the determination target information do not match.

17. The power router according to claim 16, wherein, when the compatibility determination information and the determination target information do not match, the first arithmetic operation unit embeds an incompatibility flag of the additional power converting leg in the fourth database, and

does not cause the additional power converting leg to operate.

18. The power router according to claim 17, wherein, when the compatibility determination information and the determination target information do not match, the first arithmetic operation unit sets to 0 a value indicating operation performance of the additional power converting leg in the third database.

19. The power router according to claim 16, wherein

the plurality of power converting leg each include the second storage unit,

the second storage unit of each of the plurality of power converting legs holds determination target information indicating whether or not each of the power converting legs in which the second storage unit is embeds is compatible with the power router,

the first storage unit further holds a fourth database that includes compatibility determination information that serves as a criterion for determining whether or not the additional power converting leg is compatible with the power router,

in a situation that the additional power converting leg is added,

the plurality of power converting legs each output the determination target information to the first arithmetic operation unit in response to the response request instruction, and

the first arithmetic operation unit compares the compatibility determination information and the determination target information,

does not cause the additional power converting leg to operate when the compatibility determination information and the determination target information do not match.

20. The power router according to claim 19, wherein, when the compatibility determination information and the determination target information do not match, the first arithmetic operation unit embeds an incompatibility flag of the additional power converting leg in the fourth database, and

does not cause a power converting leg corresponding to the incompatibility flag to operate.

21. The power router according to claim 20, wherein, when the compatibility determination information and the determination target information do not match, the first arithmetic operation unit sets to 0 a value indicating operation performance of the power converting leg corresponding to the incompatibility flag of the third database among the plurality of power converting legs.

22. The power router according to claim 1, wherein the first storage unit further holds a fifth database in which operation history information of each of the plurality of power converting legs is recorded.

23. A power network system comprising:

one or a plurality of power routers; and

a power system that the one or the plurality of power routers is directly or indirectly connected with, wherein

the one or the plurality of power routes each include

a direct current bus that maintains a voltage at a predetermined voltage rating,

a plurality of power converting legs that each include a first connection terminal connected to the direct current bus, include a second connection terminal connected as an external connection terminal to an external connection party and include a function of bidirectionally converting power between the first connection terminal and the second connection terminal, and

a control unit that controls an operation of each of the plurality of power converting legs, and

the control unit includes a first storage unit that holds a first database that includes identification information of each of the plurality of power converting legs, and

executes the operation of each of the power converting legs referring to the identification information of the first database.

24. A power router operation control method comprising, in a power router that includes

a direct current bus that maintains a voltage at a predetermined voltage rating, and

a plurality of power converting legs that each include a first connection terminal connected to the direct current bus, include a second connection terminal connected as an external connection terminal to an external connection party and include a function of bidirectionally converting power between the first connection terminal and the second connection terminal,

outputting an operation instruction to each of the plurality of power converting legs referring to the identification information of a first database that includes identification information of each of the plurality of power converting legs, and controlling an operation of each of the plurality of power converting legs.

25. A non-transitory computer readable medium having stored thereon a power router operation control program, the program causing a computer to, in a power router that includes

a direct current bus that maintains a voltage at a predetermined voltage rating,

a plurality of power converting legs that each include a first connection terminal connected to the direct current bus, include a second connection terminal connected as an external connection terminal to an external connection party and include a function of bidirectionally converting power between the first connection terminal and the second connection terminal;

and

the computer that configures a control unit that controls an operation of each of the plurality of power converting legs, and

in which the computer includes a first storage unit that holds in advance a first database that includes identification information of each of the plurality of power converting legs,

execute processing of outputting an operation instruction to each of the plurality of operation converting legs referring to the identification information of the first database, and controlling an operation of each of the plurality of power converting legs.

26. A power router comprising:

a direct current bus that maintains a voltage at a predetermined voltage rating;

a plurality of power converting legs that each include a first connection terminal connected to the direct current bus, include a second connection terminal connected as an external connection terminal to an external connection party and include a function of bidirectionally converting power between the first connection terminal and the second connection terminal; and

controlling means for controlling an operation of each of the plurality of power converting legs, wherein

the controlling means includes first storage means for holding a first database that includes identification information of each of the plurality of power converting legs, and executes the operation of each of the power converting legs referring to the identification information of the first database.

27. A power network system comprising:

one or a plurality of power routers; and

a power system that the one or the plurality of power routers is directly or indirectly connected with, wherein

the one or the plurality of power routes each include

a direct current bus that maintains a voltage at a predetermined voltage rating,

a plurality of power converting legs that each include a first connection terminal connected to the direct current bus, include a second connection terminal connected as an external connection terminal to an external connection party and include a function of bidirectionally converting power between the first connection terminal and the second connection terminal, and

controlling means for controlling an operation of each of the plurality of power converting legs, and

the controlling means includes first storage means for holding a first database that includes identification information of each of the plurality of power converting legs, and

executes the operation of each of the power converting legs referring to the identification information of the first database.

28. A non-transitory computer readable medium having stored thereon a power router operation control program, the program causing a computer to, in a power router that includes

a direct current bus that maintains a voltage at a predetermined voltage rating,

a plurality of power converting legs that each include a first connection terminal connected to the direct current bus, include a second connection terminal connected as an external connection terminal to an external connection party and include a function of bidirectionally converting power between the first connection terminal and the second connection terminal;

and

the computer that configures controlling means for controlling an operation of each of the plurality of power converting legs, and

in which the computer includes a first storage means for holding in advance a first database that includes identification information of each of the plurality of power converting legs,

execute processing of outputting an operation instruction to each of the plurality of operation converting legs referring to the identification information of the first database, and controlling an operation of each of the plurality of power converting legs.