JP2019122057A - Energy management device and inter-area emergency power adaptation method - Google Patents

Abstract

To provide an energy management device and an inter-area emergency power adaptation method capable of easily adapting emergency power between areas, without requiring a large cost burden.SOLUTION: When a distribution status coordination portion 14A receives and transmits a distribution status regarding the distribution of power for an emergency with the other area which is coordinated via a coordination communication line LC, and a load distribution control portion 14B receives a power source adaptation request indicating that the power for the emergency of the other area cannot be supplied for priority load to be a top priority in the other area in the distribution status coordination portion 14A, one part of or all of the adaptable power except the power distributed to the load having the top priority in the power for the emergency is adapted to the other area through a linked power distribution line LP.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an inter-area emergency power interchange technology for coordinating emergency power among a plurality of areas when power is lost.

  Even if unforeseen situations occur such as earthquakes, fires or large-scale system failures, as a comprehensive risk management for companies and local governments to continue and restore their business, minimizing the damage. There is a management method called Business Continuity Management (BCM). One of the products of this business continuity management is BCP (Business Continuity Planning).

  In BCP, securing power is important in order to continue and restore business. Generally, when an incident occurs and the main power supply is lost at the time of normal use, such as commercial power supply, when a power loss occurs, a facility such as a building or factory or a private power generator installed in an area including a plurality of these facilities The emergency power supply is activated, and the obtained emergency power is sequentially distributed to each load in the area. At this time, emergency power can not be allocated to all the loads in the area because emergency power is not sufficient compared to the main power supply in peacetime.

  In BCP, the highest priority load (BCP load), which is indispensable for business continuity and restoration, is selected in advance as a load to which emergency power should be preferentially allocated when such power loss occurs. As a result, when power is lost, emergency power is preferentially allocated to the highest priority load in the area, and power necessary for business continuity and recovery is secured.

  According to BCP, when power is lost, power is distributed to the minimum load required for business continuity and restoration within each area, but in some areas individual problems may occur due to incidents There is. In such a case, the emergency power shortage will result in an emergency that can not supply sufficient power to the highest priority load in the area. Therefore, it is necessary to adapt emergency power between areas.

Conventionally, as a system for managing power demand / supply in a region in an integrated manner, CEMS (Community Energy Management System: Community Energy Management System) has been operated (see, for example, Non-Patent Document 1).
According to this CEMS, since power supply and demand in each area is centrally managed, even if individual troubles occur in any area due to an incident and the emergency power in the area is insufficient, the area Emergency power from other areas can be accommodated.

"Smart Community", Fuji Electric Co., Ltd., http://www.fujielectric.co.jp/products/smartcommunity/

  However, in such a conventional technology, since it is necessary to newly construct the CEMS itself as an infrastructure, a huge facility cost occurs when introducing the CEMS, and the CEMS operation also requires a certain cost. In addition, since the way of thinking about BCM and BCP in each company or local government is different, there is also a practical problem of who bears the cost of these costs. Therefore, there is a problem that the surrounding areas such as companies and local governments can not easily coordinate, and the introduction of CEMS does not proceed. In fact, as of the end of 2017, there are few cases where CEMS has been introduced domestically. For this reason, in order to carry out wide area use of the emergency distributed power supply at this point in time, it will wait for CEMS to spread widely in a plane.

  The present invention is intended to solve such problems, and it is an object of the present invention to provide an inter-area emergency power interchange technology in which emergency power can be easily interchanged between areas without requiring a large cost burden. And

  In order to achieve such an object, the energy management apparatus according to the present invention is configured to store a priority level indicating an allocation order of emergency power with respect to a plurality of loads existing in its own area. And the emergency power supplied from the emergency power supply at the time of power loss when the main power to be supplied to the plurality of loads is lost, at least the highest priority level with the highest priority level among the plurality of loads The load distribution control unit configured to distribute to the highest priority load, and the distribution status regarding the distribution of the emergency power, are exchanged via the cooperative communication line between the partner area to be cooperated And the load distribution control unit is configured to receive a power supply interchange request indicating that the other party emergency power can not be supplied to the other party highest priority load in the other party area. When received by the distribution situation cooperation unit from the other party area, some or all of the adaptable power excluding the power to be distributed to the highest priority load among the emergency power is accommodated to the other party area through the associated distribution line. It is intended to

  Further, in the above configuration example of the energy management apparatus according to the present invention, when the distribution situation cooperation unit can not distribute the emergency power to the highest priority load, the other party is connected via the cooperative communication line. The power distribution accommodation request is transmitted to the area, and the load distribution control unit transmits, according to the power supply accommodation request transmitted to the other party area, the other party emergency power accommodated from the other party area via the associated distribution line. It distributes to the said top priority load.

  Further, according to one configuration example of the energy management apparatus according to the present invention, the load distribution control unit may perform the emergency within the range of the supply capacity of the emergency power supply device among the plurality of loads when the power is lost. The emergency power is sequentially distributed to the load of the priority level to which power can be distributed.

  Further, in the above configuration example of the energy management apparatus according to the present invention, when the load distribution control unit receives the power supply accommodation request, the priority level is selected from among the distributed loads being allocated the emergency power. The flexible power is secured by selecting one or more arbitrary loads whose level is lower than the highest priority level as a load to be shut down and stopping distribution of the emergency power to the load to be shut down The

  In one configuration example of the energy management apparatus according to the present invention, the load distribution control unit selects at least the load in the lowest distribution level with the lowest priority level among the loads in distribution as the load to be blocked. It is intended to

  In one configuration example of the energy management apparatus according to the present invention, the load distribution control unit is configured to set a distribution target level indicating a priority level to which the emergency power is to be allocated. By raising the priority level one level above the low minimum distribution level, the load in the minimum distribution level is selected as the load to be shut down.

  Further, according to one configuration example of the energy management apparatus according to the present invention, the load distribution control unit raises the distribution target level indicating the priority level to which the emergency power is to be distributed to the highest priority level. Among the loads being distributed, all loads except the highest priority load are selected as the load to be shut off.

  The inter-area emergency power interchange method according to the present invention is characterized in that the emergency power supplied from the emergency power supply device is lost at the time of power loss when the main power to be supplied to a plurality of loads present in the own area is lost. An inter-area emergency power interchange method for use in an energy management apparatus for allocating to a plurality of loads, wherein a storage unit stores a priority level indicating an allocation order of the emergency powers for the plurality of loads. A load distribution control step of distributing the emergency power to the highest priority load having the highest priority level among the plurality of loads at least when the power is lost, the load distribution control step; The cooperation unit has an allocation situation cooperation step in which the allocation situation regarding the allocation of the emergency power is exchanged with the other area to be cooperated with via the cooperation communication line. The load distribution control step, when receiving a power supply interchange request from the other party area, indicating that the other party emergency power can not be supplied to the other party highest priority load in the other party area, It is intended to include the step of adapting part or all of the adaptable power except for the power to be allocated to the highest priority load to the other area through the associated distribution line.

  According to the present invention, at the time of power loss, an energy management device represented by a central monitoring device of BEMS, which has been widely introduced in recent years, cooperates among a plurality of areas to accommodate each emergency power. Become. Therefore, it is possible to restore and operate the top priority load (BCP load) of each area even when the power is lost, without requiring a large-scale facility independent of the energy management apparatus of each area such as CEMS. it can. Moreover, as for the linked distribution lines and linked communication lines connecting between linked areas, the existing distribution lines and communication lines may be used.

  Therefore, it is possible to easily continue and restore the business at a very small cost, such as changing the software of the existing energy management device. In addition, the problem of cost sharing as in the case of introducing CEMS is also eliminated, so it can be introduced very easily and widely in each company or local government unit and further in building and building units, and the risk of local society occurring at the time of wide area blackout It will be possible to reduce significantly.

It is a block diagram showing composition of an energy management system. It is an example of composition of load priority data. It is an example of assignment of priority levels. It is explanatory drawing which shows the reset / interruption | blocking order of the load based on a priority level. It is a power supply system diagram regarding the equipment in an area. It is a flowchart which shows accommodation control of emergency power. It is explanatory drawing which shows the flexible operation example (before accommodation) of emergency power. FIG. 7 is an explanatory view showing an example of an emergency power interchange operation (when a failure occurs). It is explanatory drawing which shows the interchange operation example (at the time of load interruption) of emergency electric power. It is explanatory drawing which shows the example of a change operation | movement of emergency power (at the time of change).

Next, an embodiment of the present invention will be described with reference to the drawings.
[Energy management device]
First, an energy management apparatus 10 according to the present embodiment will be described with reference to FIG. FIG. 1 is a block diagram showing the configuration of the energy management apparatus.

The energy management apparatus 10 as a whole comprises a computer such as a server device, and a main power source such as a commercial power source to be supplied is lost due to a power failure or the like with respect to a plurality of loads existing in its own area to be managed. It is a device that distributes the emergency power supplied from the emergency power supply to each load when the power is lost.
The energy management apparatus 10 is disposed in each of the areas A, B,..., N set in advance as cooperation targets for exchanging emergency power, and the energy management system 10 is configured by these energy management apparatuses 10 Be done.

  As one of the specific examples of the energy management system 10 according to the present invention, there is a central monitoring system of a building energy management system (BEMS).

BEMS is a system that performs facility management and energy saving control of buildings and facilities such as buildings, and also supports improvement of environment and energy saving performance by energy management. Such BEMS has been introduced since the 1990's, and has been widely disseminated with the support of the government for the purpose of energy saving, and it has been introduced into many buildings and put into practice in recent years.
The present invention is to adapt emergency power between areas when power is lost by adding a new configuration to the existing technology such as BEMS. For this reason, compared with the case where CEMS mentioned above is introduce | transduced, the cost which an installation and an operation require can be reduced significantly.

  As shown in FIG. 1, the energy management apparatus 10 according to the present embodiment includes, as main functional units, a communication I / F unit 11, an equipment I / F unit 12, a storage unit 13, and an arithmetic processing unit 14. These functional units are connected via the internal bus 15.

  The communication I / F unit 11 has a function of performing data communication among the areas A, B,..., N via the cooperative communication line LC. As the cooperative communication line LC, a dedicated communication line may be used, or a general data communication network such as the Internet or a wireless LAN may be used.

The facility I / F unit 12 performs data communication with the facility 20 existing in the area of the energy management apparatus 10 to collect various operation statuses from each facility 20, and the operation of each facility 20. And a function of transmitting a control instruction.
As main facilities 20, there are main power supply unit 21, emergency power supply unit 22, power receiving and feeding unit 23, top priority load 31, quasi priority load 32, and general load 34, and these facilities 20 are connected to bus B .

The main power supply unit 21 receives a commercial power supply AC from a general power system, transforms it into a main power supply such as a power supply or a light power supply, and supplies the function to each facility 20 in the area and the energy management device 10 Have.
The emergency power supply 22 comprises a general emergency generator such as a diesel generator or a gas turbine generator, or a storage device connected to a converter, and the main power supplied from the main power supply 21 is lost It has a function to start up and supply emergency power.
The power supply and reception device 23 has a function of adapting emergency power among the areas A, B,..., N via, for example, a cooperative distribution line LP using existing distribution lines such as private lines.

The top priority load (BCP load) 31 is a load to which emergency power should be allocated with top priority when power is lost. The highest priority load 31 is selected in advance from the facilities 20 and set in the storage unit 13. For example, in BCP, as a specific example of top priority load 31, equipment for emergency, security, disaster prevention, rescue, communication, etc. required for companies and local governments to continue and restore their business is selected. Ru.
The quasi-priority load 32 and the normal priority load 33 are loads that should be allocated by giving priority to emergency power sequentially after the highest priority load 31 when power is lost. The general load 34 is a load to which emergency power is not distributed when power is lost.

The storage unit 13 is formed of a storage device such as a hard disk or a semiconductor memory, and has a function of storing process data and programs used for various processes executed by the arithmetic processing unit 14.
The program is read from an external device or a recording medium (both not shown) connected to the energy management apparatus 10 and stored in advance in the storage unit 13.

As main processing data stored in the storage unit 13, there is load priority data indicating the distribution order of emergency power regarding each load.
FIG. 2 is a configuration example of load priority data. Here, as load priority data related to each load, a set of a load ID for identifying each load and a priority level assigned to the load is registered.

  FIG. 3 is an example of assignment of priority levels. Here, among the five priority levels 1 to 5, the priority levels 1 to 3 are assigned to the priority load to which emergency power is to be distributed when the power is shut off, and priority levels 4 to 5 are the emergency power distribution when the power is shut off It is assigned to the general load that is not targeted. Specifically, priority level 1 is assigned to the highest priority load (BCP load), and priority levels 2 and 3 are respectively assigned to the semi-priority load and the normal priority load following the highest priority load. Also, priority levels 4 and 5 are assigned to priority general load and normal general load.

FIG. 4 is an explanatory view showing a load return / cut order based on the priority level.
In general self-generated load distribution control used in an energy management system such as BEMS, a priority level is assigned to each load, and the order of recovery and cutoff of each load based on emergency power is controlled. Here, recovery refers to returning the load to a state before loss of power based on emergency power, and disconnection refers to stopping the supply of emergency power to the load.

  As shown in FIG. 4, in the self-generated load distribution control, each load is controlled to be restored / shutdown sequentially (in a priority scheme) according to the order of priority levels. Specifically, when five priority levels 1 to 5 are set, each load is controlled to return in the normal order of the priority levels 1 to 5 and cut off in the reverse order of the priority levels 5 to 1 in the shutoff control.

The arithmetic processing unit 14 has a CPU and its peripheral circuits, and the CPU executes the program read from the storage unit 13 so that hardware and software cooperate to realize various processing units. doing.
As main processing units realized by the arithmetic processing unit 14, there are a distribution situation cooperation unit 14 A and a load distribution control unit 14 B.

  The distribution status linking unit 14A has a function of exchanging the distribution status regarding the distribution of emergency power with the other area to be linked via the cooperative communication line LC, and the emergency power to the top priority load 31. If the allocation can not be made, it has a function of transmitting a power supply accommodation request to the other area via the cooperative communication line LC.

  When the power is lost, the load distribution control unit 14B sets the supply capacity of the emergency power supply device 22 based on the priority level registered in the load priority data of the storage unit 13 by the above-described self-generated load distribution control. It has a function of sequentially allocating emergency power to each load up to loads of priority levels to which emergency power can be distributed. As a result, when power is lost, emergency power is distributed to at least the highest priority load of the highest priority level where the priority level is the highest.

  In addition, the load distribution control unit 14B performs a power supply interchange request indicating that the other party emergency power can not be supplied to the other party's top priority load in the other party area to be cooperated, by the distribution situation cooperation part 14A from the other party area When received, the function of adapting part or all of the adaptable power excluding the power to be distributed to the highest priority load among the emergency power to the other area through the cooperative distribution line LP, and the other party from the distribution status cooperation unit 14A It has a function of distributing to the highest priority load 31 the other party emergency power that has been accepted from the other party area via the associated distribution line LP in accordance with the power source accommodation request sent to the area.

  Also, when the load distribution control unit 14B receives the power supply interchange request from the other area, one or more arbitrary priority levels whose priority level is lower than the highest priority level out of the allocation load during allocation of emergency power are Function of securing flexible power by selecting the load of the load as the load to shut down and stopping the distribution of emergency power to the load to be shut off, and at least the lowest distribution of the lowest priority level among the distributed loads It has a function of selecting a load of level as a load to be shut off.

In this case, more specifically, the load on the lowest allocation level is cut off by raising the allocation target level indicating the priority level to which emergency power should be allocated to the priority level one higher than the lowest allocation level. It may be selected as a load.
Alternatively, by raising the distribution target level indicating the priority level to which emergency power should be allocated to the highest priority level, all loads except for the highest priority load among the distributed loads can be selected as the load to be shut off. Good.

[Operation of this embodiment]
Next, the operation of the energy management apparatus 10 according to the present embodiment will be described.

[Power switching control at the time of power loss]
First, with reference to FIG. 5, power supply switching control to the equipment 20 at the time of power loss will be described. FIG. 5 is a power supply system diagram of equipment in the area. Here, the case where the priority levels shown in FIG. 5 are assigned to the highest priority load 31, the semi-priority load 32, the normal priority load 33, and the general load 34 will be described as an example.

  In the configuration example of FIG. 5, the bus B of FIG. 1 is separated into the main power supply side bus BS and the emergency power supply side bus BL by the switch SB. The main power supply 21 and the general load 34 are connected to the BS via the switch SAC and the switch SL, respectively. Also, the emergency power supply device 22, the power receiving and receiving device 23, the highest priority load 31, the semi-priority load 32, and the normal priority load 33 are connected to BL via switches SG, ST, S1, S2 and S3, respectively. There is.

  In normal times, the main power supply unit 21 is activated, whereby the commercial power supply AC from the power system is received by the main power supply unit 21 and is transformed into a main power supply such as a power supply or a lamp power supply, via the SAC It is supplied to the BS. At this time, SB is short-circuited, and the main power of BS is also supplied to BL. On the other hand, in normal times, the emergency power supply device 22 and the power supply / reception device 23 are shut off, and SG and ST are open. Therefore, by short-circuiting S1, S2, S3 and SL arbitrarily, top priority load 31, semi-priority load 32, normal priority load 33 and general load 34 are applied to the main power supply.

  When the power supply system fails and the main power supply is lost, the loss of power is detected by the undervoltage relay HUV connected to the secondary side of the main power supply device 21. The load distribution control unit 14B of the energy management apparatus 10 confirms the loss of power from the HUV via the facility I / F unit 12, and starts switching control from normal time to emergency time.

  First, the load distribution control unit 14B opens the SAC and opens the SB by the facility I / F unit 12, disconnects the BL from the BS, activates the emergency power supply device 22 and the power reception / reception device 23, and operates the emergency power supply After the emergency power from the device 22 stabilizes, the equipment I / F unit 12 shorts the SG. As a result, the emergency power generated by the emergency power supply device 22 is supplied only to the BL. When emergency power is also supplied to the general load, SB may be shorted to connect BS to BL, and SL of the general load to which emergency power should be supplied may be shorted.

  Subsequently, the load distribution control unit 14B executes self-generated load distribution control based on the priority level set in the storage unit 13. Under the present circumstances, when there is a margin in emergency power and it is possible to drive both the top priority load 31 and the semi-priority load 32, the load distribution control unit 14B first shorts the S1 by the facility I / F unit 12 and gives top priority. After loading the load 31 into the BL, the facility I / F unit 12 shorts S2 and loads the quasi-priority load 32 into the BL. As a result, emergency power is distributed to the highest priority load 31 and the low priority load 32.

[Emergency power interchange control]
Next, emergency power interchange control will be described with reference to FIG. FIG. 6 is a flowchart showing emergency power interchange control.

First, as shown in FIG. 6, the load distribution control unit 14B acquires the distribution status of emergency power from the top priority load 31 by the facility I / F unit 12 (step S100), and the emergency power is the top priority load 31. It is confirmed whether or not allocation is possible (step S101).
Here, if the emergency power can not be allocated to the top priority load 31 due to some trouble (step S101: NO), the distribution situation cooperation unit 14A requests the power source accommodation to each other area via the cooperative communication line LC. It transmits (step S102).

Next, the load distribution control unit 14B acquires the presence or absence of the power supply interchange from the partner area via the cooperative distribution line LP from the power reception / reception device 23 by the facility I / F unit 12 (step S103), and starts the power supply interchange. It waits until is confirmed (step S103: NO).
When the start of the power supply interchange is confirmed (step S103: YES), the load distribution control unit 14B shorts the S3 by the facility I / F unit 12 after the counterpart emergency power from the power supply / reception device 23 is stabilized. . As a result, the other party's emergency power, which is received from the other party area via the associated distribution line LP, is distributed and supplied only to the BL.

  Subsequently, the load distribution control unit 14B executes self-generated load distribution control based on the priority level set in the storage unit 13. At this time, since the emergency power on the BL is the partner emergency power received from the other area, the load distribution control unit 14B shorts the S1 by the facility I / F unit 12 to BL only the highest priority load 31. (Step S104). As a result, the other party's emergency power is distributed to the highest priority load 31, and it is possible to operate the minimum equipment necessary for companies and local governments to continue or restore their business.

  Thereafter, the load distribution control unit 14B confirms the restoration status of the commercial power AC with the HUV using the facility I / F unit 12 (step S110), and when the commercial power AC is not restored (NO in step S110). , And return to step S100. On the other hand, when the commercial power supply AC is restored (step S110: YES), a series of emergency power interchange control is ended.

In addition, when the emergency power can be distributed to the highest priority load 31 in step S101 (step S101: YES), the load distribution control unit 14B compares the self distribution level with the highest priority level to obtain the other area. In response to the power supply interchange request from the control unit 11, it is checked whether the emergency power of the own area can be accommodated (step S105).
Here, if the self allocation level does not exceed the highest priority level and is equal (step S105: NO), there is no adaptable power in the emergency power of the area, so the process proceeds to step S110 described above.

On the other hand, if the self-distribution level exceeds the highest priority level (step S105: YES), there is adaptable power in the emergency power of the own area, so the following emergency control of the emergency power to the other area is performed. Run.
First, the load distribution control unit 14B confirms the reception of the power supply accommodation request from the partner area via the cooperation communication line LC in the distribution situation cooperation unit 14A (step S106), and if there is no reception of the power supply accommodation request (step S106) S106: NO), the process proceeds to step S110 described above.

Further, when the power supply interchange request from the other area is received (step S106: YES), the load distribution control unit 14B sets the distribution target level indicating the priority level to which the emergency power should be allocated to the minimum distribution level. By raising the priority level to the next higher priority level, the priority load with the lowest distribution level is selected as the load to be shut down (step S107).
Next, the load distribution control unit 14B secures the adaptable power by blocking the priority load selected as the load to be blocked (step S108).

Thereafter, the load distribution control unit 14B shorts the ST by the facility I / F unit 12 and controls the power supply / reception device 23 by the facility I / F unit 12 so that the adaptable power secured from among the emergency power can be obtained. Are transferred to the other area via the cooperative communication line LC (step S109), and the process proceeds to step S110 described above.
Thereby, when there is a power supply interchange request from the other area, the accommodation control of emergency power to the other area is executed until the self-distribution level becomes equal to the highest priority level and the adaptable power disappears. It will be.

[Operation example]
Next, with reference to FIGS. 7 to 13, an example of the emergency power interchange operation according to the present embodiment will be described. FIG. 7 is an explanatory diagram of an emergency power interchange operation example (before interchange). FIG. 8 is an explanatory view of an emergency power interchange operation example (when a failure occurs). FIG. 9 is an explanatory view of an emergency power interchange operation example (during load interruption). FIG. 10 is an explanatory view showing an example of an emergency power interchange operation (during interchange). Here, four areas A, B, C, and D are set in advance as collaboration targets, and an example of an emergency power interchange operation after a wide area blackout occurs in an area including these areas A, B, C, and D. Will be explained.

As shown in FIG. 7, at the time before the interchange after power loss, priority loads of priority levels 1 to 3 exist in area A, and from the emergency power supply (G) to all these priority loads. Emergency power is allocated. Therefore, the self allocation level of the area A becomes the priority level 3 and is transmitted to the other areas B, C, D via the cooperative communication line LC.
Further, in the area B, only the highest priority load of the priority level 1 exists, and emergency power is distributed from the emergency power supply (G) to the highest priority load. Therefore, the self-distribution level of the area B becomes the priority level 1 and is transmitted to the other areas A, C, D via the cooperative communication line LC.

In addition, priority loads of priority levels 1 and 2 exist in area C, and emergency power is distributed from the emergency power supply (G) to all these priority loads. Therefore, the self allocation level of the area C becomes the priority level 2 and is transmitted to the other areas A, B, D via the cooperative communication line LC.
Further, in the area D, only the highest priority load of priority level 1 exists, and emergency power is distributed from the emergency power supply (G) to the highest priority load. Therefore, the self-distribution level of the area D becomes the priority level 1 and is transmitted to the other areas A, B, C via the cooperative communication line LC.

  Next, as shown in FIG. 8, when a failure occurs in area B and emergency power is not distributed to the highest priority load, the other management area A, C, D from the energy management device of area B In response to this, the power supply accommodation request is transmitted via the cooperative communication line LC.

  After that, as shown in FIG. 9, the power supply interchange request from area B is received by the energy management apparatus of area A, and the distribution target level of area A is raised from priority level 3 which is the self distribution level to priority level 2 Be As a result, the normal priority load of priority level 3 is cut off, and flexible power is secured out of the emergency power of area A.

Further, the power supply interchange request from the area B is received by the energy management apparatus of the area C, and the distribution target level of the area C is raised from the priority level 2 which is the self distribution level to the priority level 1. As a result, the normal priority load of priority level 2 is cut off, and flexible power is secured out of the emergency power of area C.
Also, although the power supply interchange request from area B is received by the energy management apparatus in area D, the self distribution level of area D is priority level 1 and can not be further increased. The emergency power will not be accommodated.

  Therefore, as shown in FIG. 10, the surplus of each emergency power is accommodated from area A and area C to area B via the linked distribution line LP. In response to this, the energy management device of area C receives emergency power received from area A and area C from the cooperative distribution line LP, and distributes the power to the highest priority load of priority level 1. As a result, the top priority load in area B is restored.

[Effect of this embodiment]
As described above, according to the present embodiment, the distribution situation cooperation unit 14A exchanges the distribution situation regarding the distribution of emergency power with the other area to be cooperated with via the cooperative communication line LC, and performs load distribution control. If the power distribution accommodation request indicating that the other party emergency power can not be supplied to the other party highest priority load in the other party area is received by the distribution status collaborating unit 14A from the other area, A part or all of the adaptable power except for the power to be distributed to the priority load is to be transferred to the other area through the associated distribution line LP.

  More specifically, when the distribution situation cooperation unit 14A can not distribute emergency power to the highest priority load 31, it transmits a power supply accommodation request to the other area via the cooperative communication line LC, and performs load distribution control. According to the power supply accommodation request transmitted to the other party area, the part 14 B distributes the other party emergency power that is accepted from the other party area via the cooperative distribution line LP to the highest priority load 31.

  As a result, when power is lost, the energy management apparatus 10 represented by the central monitoring device of BEMS, which has been widely introduced in recent years, cooperates among a plurality of areas to accommodate each emergency power. For this reason, the highest priority load (BCP load) 31 of each area is restored and operated even when the power is lost, without requiring a large-scale facility independent of the energy management apparatus 10 of each area such as CEMS. be able to. Further, for the cooperative distribution line LP and the cooperative communication line LC connecting the areas to be cooperated with each other, an existing distribution line or communication line may be used.

  Therefore, it is possible to easily continue and restore the business at a very small cost, that is, changing the software of the existing energy management device 10. In addition, the problem of cost sharing as in the case of introducing CEMS is also eliminated, so it can be introduced very easily and widely in each company or local government unit and further in building and building units, and the risk of local society occurring at the time of wide area blackout It will be possible to reduce significantly.

Further, in the present embodiment, when there is a loss of power, load distribution control unit 14 B is capable of distributing emergency power within the range of the supply capacity of emergency power supply device 22 among the plurality of loads, up to the load of the priority level. Emergency power may be distributed in order.
This enables effective use of limited emergency power.

  Further, in the present embodiment, when the load distribution control unit 14B receives the power supply interchange request by the distribution status cooperation unit 14A, the priority level is the highest priority level among the distribution load during the distribution of the emergency power. Flexible power may be secured by selecting one or more lower optional loads as the load to be shut down and stopping the distribution of emergency power to the load to be shut down.

  When the emergency power is interchanged, if there is sufficient remaining flexible power which allocates emergency power to each priority load within the range of the supply capacity of the emergency power supply 22, priority which is restored by the emergency power Although the load is not cut off, generally, the supply capacity of the emergency power supply 22 is minimized. As described above, if the priority level cuts off the priority load whose level is lower than the highest priority level, more flexible power can be secured compared to the case where the remaining flexible power allocated to emergency power is distributed to each priority load. can do.

Further, in the present embodiment, as a method of selecting the load to be shut off, the load distribution control unit 14B prioritizes the distribution target level indicating the priority level to which emergency power is to be allocated by one higher than the lowest distribution level. By raising the level to the level, the lowest distribution level load may be selected as the load to be shut down.
As a result, it is possible to adapt emergency power to the other area while minimizing the load to be cut off in the own area.

Further, in the present embodiment, as a method of selecting the load to be blocked, the load distribution control unit 14B raises the distribution target level indicating the priority level to which emergency power should be allocated to the highest priority level. Of the loads, all loads except the highest priority load 31 may be selected as the load to be shut off.
As a result, although the load cut off in the own area increases, it is possible to accommodate maximum emergency power to the other area.

[Extension of the embodiment]
As mentioned above, although this invention was demonstrated with reference to embodiment, this invention is not limited to the said embodiment. Various changes that can be understood by those skilled in the art can be made to the configuration and details of the present invention within the scope of the present invention.

  DESCRIPTION OF SYMBOLS 1 ... Energy management system, 10 ... Energy management apparatus, 11 ... Communication I / F part, 12 ... Equipment I / F part, 13 ... Storage part, 14 ... Arithmetic processing part, 14A ... Allocation condition cooperation part, 14B ... Load distribution Control unit 15 Internal bus 20 Equipment 21 Main power supply device 22 Emergency power supply device 23 Power receiving device 31 Highest priority load 32 Semi-priority load 34 General load AC Commercial power supply, B: Bus, LP: Cooperative distribution line, LC: Cooperative communication line, BS: Main power supply side bus, BL: Emergency power supply side bus, SB, SAC, SG, ST, S1, S2, S3, SL, ... Switch, HUV ... Undervoltage relay.

Claims (8)

A storage unit configured to store a priority level indicating a distribution order of emergency power with respect to a plurality of loads existing in the own area;
When power is lost when the main power to be supplied to the plurality of loads is lost, the emergency power supplied from the emergency power supply device is at least the highest priority of the highest priority level with the highest priority level among the plurality of loads. A load distribution controller configured to distribute to the load;
A distribution status coordination unit configured to exchange the distribution status regarding the distribution of emergency power with the other area to be linked via the coordination communication line,
When the load distribution control unit receives, from the partner area, the power distribution interchange request from the partner area, the load distribution control unit indicates that the partner emergency power can not be supplied to the partner highest priority load in the partner area. An energy management apparatus characterized in that a part or all of the adaptable power excluding the power to be distributed to the highest priority load among emergency powers is transferred to the other area via a cooperative distribution line. In the energy management device according to claim 1,
When the emergency power can not be allocated to the highest priority load, the distribution situation cooperation unit transmits a power supply accommodation request to the other area via the cooperative communication line,
The load distribution control unit distributes the other-party emergency power received from the other area via the cooperative distribution line to the highest priority load in response to the power source accommodation request sent to the other area. An energy management device characterized by In the energy management device according to claim 1 or 2,
The load distribution control unit controls the emergency power to a load of a priority level to which the emergency power can be distributed within the range of the supply capacity of the emergency power supply device among the plurality of loads when the power is lost. An energy management device characterized by distributing in order. In the energy management device according to any one of claims 1 to 3.
The load distribution control unit, when having received the power supply interchange request, one or more arbitrary loads whose priority level is lower than the highest priority level among distributed loads which are distributing the emergency power. The energy management apparatus as claimed in claim 1, wherein the flexible power is secured by selecting the load to be cut off and stopping the distribution of the emergency power to the load to be cut off. In the energy management device according to claim 4,
The energy management apparatus according to claim 1, wherein the load distribution control unit selects at least the lowest distribution level load having the lowest priority level among the distribution load, as the interruption target load. In the energy management device according to claim 4,
The load distribution control unit raises the distribution target level indicating the priority level to which the emergency power is to be allocated, to a priority level one higher than the lowest allocation level at which the priority level is the lowest among the allocation loads. An energy management apparatus characterized by selecting the load at the lowest allocation level as the cutoff target load. In the energy management device according to claim 4,
The load distribution control unit raises the distribution target level indicating the priority level to which the emergency power is to be distributed to the highest priority level, thereby all loads except the highest priority load among the loads being distributed. An energy management apparatus characterized in that it is selected as a load to be shut off. Inter-area emergency used by the energy management system that distributes emergency power supplied from the emergency power supply to the multiple loads when the main power supply to the multiple loads in the own area is lost and the power is lost When the power supply method is
A storage step of storing a priority level indicating a distribution order of the emergency power with respect to the plurality of loads;
A load distribution control step of distributing the emergency power to the highest priority load having the highest priority level among the plurality of loads at least when the power is lost, the load distribution control unit;
The distribution status linking step includes a distribution status linking step in which the distribution status regarding the distribution of the emergency power is exchanged with the partner area to be linked via the linking communication line,
The load distribution control step, when receiving a power supply interchange request from the other party area, indicating that the other party emergency power can not be supplied to the other party highest priority load in the other party area, A method for inter-area emergency power interchange comprising the step of interchanging part or all of the adaptable power except for the power to be allocated to the highest priority load to the other area through the associated distribution line.

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