KR20220079038A - Multi-microgrid integrated operation system using cloud energy storage - Google Patents

Abstract

The present invention relates to a system for integrating and operating various types of microgrids.
An object of the present invention is to provide a system that is integrated and operated using a cloud energy storage device.
A multi-microgrid integrated operating system using a cloud energy storage device according to a preferred embodiment of the present invention includes a microgrid cluster including a user microgrid, a provider microgrid and a storage microgrid; and an integrated operation center that allocates a virtual ESS to the user microgrid and the supplier microgrid according to the ESS resource sharing contract and provides a virtual ESS operating environment.
According to the present invention, energy independence of the microgrid cluster can be guaranteed and supply-demand balance can be maintained by optimally operating a plurality of user microgrids, storage microgrids, and supplier microgrids through resource sharing within the microgrid cluster.

Description

Multi-microgrid integrated operation system using cloud energy storage

The present invention relates to a system for integrating and operating various types of microgrids.

Micro Grid is similar to Smart Grid in that information technology is applied to the power grid to control the amount of power generation, and it requires functions such as generation and consumption prediction, but its application scale is lower than that of the smart grid. The difference is that large-scale power transmission facilities are not required because it is relatively small and the location of the power generation source and consumer (power consuming subject) is close.

The US Department of Energy (DOE) defines a micro grid as follows.

It is a group of 'consumers' and 'Distributed Energy Resource (DER)' interconnected within a clearly defined electrical range, and is a controllable entity with respect to the system, and can be connected and independent from the system.

The concept of microgrids is expanding. In addition to the form in which the consumer and DER are fused (supply-type MG), 1) the form in which only the consumer exists (demand-type MG) 2) the form in which only residual energy resources exist 3) 1) and 2) ESS (Energy Storage System) ) is a fused form.

Recently, an attempt is being made to overcome the operational limitations of a single microgrid by integrating and operating a plurality of microgrids.

From this point of view, the present invention focuses on a multi-microgrid integrated operating environment using a cloud energy storage device.

KR10-2011-0050030 (Application date: 2011.05.26.) KR10-2019-0055513 (Application date: 2019.05.13)

An object of the present invention is to provide a system that is integrated and operated using a cloud energy storage device.

A multi-microgrid integrated operating system using a cloud energy storage device according to a preferred embodiment of the present invention includes a microgrid cluster including a user microgrid, a provider microgrid and a storage microgrid; and an integrated operation center that allocates a virtual ESS to the user microgrid and the supplier microgrid according to the ESS resource sharing contract and provides a virtual ESS operating environment.

Here, the microgrid cluster may be in a form that is completely independent from the power system.

In addition, the integrated operation center includes: a contract signing unit for performing the ESS resource sharing contract signing procedure with the user microgrid and the supplier microgrid; a commonization unit that uses the ESS resources of the storage microgrid to allocate virtual ESS to the user microgrid and the provider microgrid that have signed the contract; a virtualization unit providing an operating environment of the virtual ESS allocated to the user microgrid and the provider microgrid to the user microgrid and the provider microgrid; and a settlement unit that settles the ESS sharing cost and power transaction cost.

Here, the user microgrid EMS fuses the discharge control operation of the virtual ESS to operate the user microgrid, and the supplier microgrid EMS fuses the virtual ESS charge control operation to operate the provider microgrid .

In addition, the virtualization unit may control the charging and discharging of the ESS of the storage microgrid only when the amount of charge requested by the provider microgrid is not the same as the amount of discharge requested by the user microgrid.

According to the present invention, energy independence of the microgrid cluster can be guaranteed and supply-demand balance can be maintained by optimally operating a plurality of user microgrids, storage microgrids, and supplier microgrids through resource sharing within the microgrid cluster.

And, the present invention can minimize the construction cost of a plurality of user microgrid, storage microgrid, and provider microgrid through resource sharing.

1 is a block diagram of a multi-microgrid integrated operating system using a cloud energy storage device according to a preferred embodiment of the present invention.
FIG. 2 is a functional block diagram of the integrated operations center of FIG. 1 ;
FIG. 3 is a flowchart of the operation operation of the multi-microgrid integrated operating system using the cloud energy storage device of FIG. 1 .
4 is a first diagram for explaining a processing process for a supply shortage condition.
5 is a second diagram for explaining a processing process for a supply shortage condition.

Since the present invention can have various changes and can have various embodiments, specific embodiments are illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the present invention to specific embodiments, and it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

In describing each figure, like reference numerals have been used for like elements. In describing the present invention, if it is determined that a detailed description of a related known technology may obscure the gist of the present invention, the detailed description thereof will be omitted.

Terms such as first, second, etc. may be used to describe various elements, but the elements should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another.

For example, without departing from the scope of the present invention, a first component may be referred to as a second component, and similarly, a second component may also be referred to as a first component.

and/or includes a combination of a plurality of related listed items or any of a plurality of related listed items.

The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention.

The singular expression includes the plural expression unless the context clearly dictates otherwise. In the present application, terms such as “comprise” or “have” are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, but one or more other features It should be understood that this does not preclude the existence or addition of numbers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

Terms such as those defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present application. does not

Hereinafter, a multi-microgrid integrated operating system using a cloud energy storage device according to a preferred embodiment of the present invention will be described with reference to FIGS. 1 to 5 . Hereinafter, in order to clarify the gist of the present invention, descriptions of previously known matters will be omitted or simplified.

* Structure of multi-microgrid integrated operating system using cloud energy storage device *

Referring to FIG. 1 , a multi-microgrid integrated operating system (hereinafter referred to as an 'operating system') using a cloud energy storage device includes a microgrid cluster 100, a communication network 200, and an integrated operation center 300, Total Operating Center. ) may be included. The EMS and BMS belonging to the microgrid in the microgrid cluster 100 may communicate with each other through the integrated operation center 300 and the communication network 200 . The integrated operation center 300 may be built as a server.

The microgrid cluster 100 may include various types of microgrids. The microgrid belonging to the microgrid cluster 100 may be of the following basic type.

1. Uer MicroGrid (UMG)

2. Provider MicroGrid (PMG)

3. Storage MicroGrid (SMG)

The microgrid cluster 100 may include a plurality of user microgrids, a storage microgrid, and a plurality of provider microgrids. A plurality of user microgrids, a storage microgrid, and a plurality of provider microgrids can be connected through DC power lines to exchange power with each other. The microgrid cluster 100 is a form that is completely independent from the power system (utility grid, bulk grid).

1 illustrates a case in which there are two user microgrids (UMG1, UMG2, hereinafter, collectively referred to as 'UMG'), one storage microgrid (SMG), and two provider microgrids (PMG1, PMG2). Reference numeral 10-1 denotes UMG1, reference numeral 10-2 denotes UMG2, reference numeral 30 denotes SMG, reference numeral 20-1 denotes PMG1, and reference numeral 20-2 denotes PMG2. Each of the plurality of user microgrids, the storage microgrid, each of the plurality of provider microgrids, and the operating entity of the integrated operation center may be different from each other.

In the supplier microgrids 20-1 and 20-2, the first supplier microgrid 20-1 is a distributed power source that cannot control the output (eg, a power generation source that cannot arbitrarily adjust the amount of power generation such as solar power generation and wind power generation) ) as a distributed power source, and the second supplier microgrid 20-2 is a distributed power source capable of output control (for example, a power generation source that can arbitrarily adjust the amount of power generation, such as a fuel cell). .

A plurality of user microgrids 10-1, 10-2, storage microgrid 30, and provider microgrid 20-1, 20-2 are interconnected by DC power lines DL, and DC power lines DL ) to transmit or receive power.

Each of the plurality of user microgrids (10-1, 10-2, hereinafter, collectively referred to as '10') and a power output terminal of each of the plurality of supplier microgrids (20-1, 20-2) have a meter 13 -1, 13-2, 23-1, 23-2) can be installed. The meters 13-1 and 13-2 installed at the power inlet end of each of the plurality of user microgrids 10 can measure the amount of power that each of the plurality of user microgrids 10 receives through the DC power line DL. have. From a power transaction point of view, the amount of power the user microgrid 10 receives through the DC power line DL may be the amount of power purchased by the user microgrid 10 . The meters 23-1 and 23-2 installed at the power output terminals of the plurality of supplier microgrids 20-1 and 20-2, respectively, have a DC power line ( DL) can measure the amount of power transmitted. From a power transaction point of view, the amount of power output by the supplier microgrids 20-1 and 20-2 to the DC power line DL may be power sales.

Each of the plurality of user microgrids 10 is referred to as an EMS (11-1, 11-2, hereinafter referred to as '11', Energy Management System) and a load (12-1, 12-2, hereinafter referred to as '12'), respectively. ) is composed of The user microgrid EMS 11 may operate a user microgrid (UMG) using a virtual ESS. At this time, the user microgrid EMS 11 may use the virtual ESS by utilizing the ESS 32 resource shared through the virtualization function of the TOC 300 .

The storage microgrid 30 may include a BMS (31, Battery Management System) and an ESS (32, Energy Storage System).

The first supplier microgrid 20-1 may include an EMS 21-1 and a first distributed power source 22-1. The first supplier microgrid EMS 21-1 may operate the first supplier microgrid 20-1 using a virtual ESS. In this case, the first provider microgrid EMS 21-1 may use the virtual ESS by utilizing the ESS 32 resource shared through the virtualization function of the TOC 300 . The first distributed power source 22-1 may be a distributed power source that cannot control the output.

The second supplier microgrid 20 - 2 may include an EMS 21 - 2 and a second distributed power source 22 - 2 . The second supplier microgrid EMS 21-2 may operate the second supplier microgrid 20-2 using the virtual ESS. In this case, the second provider microgrid EMS 21 - 2 may use the virtual ESS by utilizing the ESS 32 resource shared through the virtualization function of the TOC 300 . The second distributed power supply 22 - 2 may be a distributed power supply capable of output control.

Referring to FIG. 2 , the integrated operation center 300 may include a contract signing unit 310 , a commonization unit 320 , a virtualization unit 330 , and a settlement unit 340 . The integrated operation center 300 allocates a virtual ESS to the user microgrid 10, the first provider microgrid 20-1, and the second provider microgrid 20-2 according to the ESS resource sharing contract conclusion, A virtual ESS operating environment can be provided.

The contract signing unit 310 may perform a procedure for signing an ESS resource sharing contract with the user microgrid 10 , the first supplier microgrid 20 - 1 , and the second supplier microgrid 20 - 2 .

The commonization unit 320 uses the ESS 32 resources to provide a virtual ESS to the user microgrid 10, the first provider microgrid 20-1, and the second provider microgrid 20-2 that have signed a contract. can be assigned The user microgrid EMS 11 can operate the user microgrid by fusing the discharge control operation of the virtual ESS. The first supplier microgrid EMS 21-1 may operate the first supplier microgrid 20-1 by fusing the virtual ESS charging control operation. The second supplier microgrid EMS 21-2 may operate the second supplier microgrid 20-2 by fusing the virtual ESS charging control operation.

The virtualization unit 330 configures the operating environment of the virtual ESS allocated to the user microgrid 10, the first provider microgrid 20-1, and the second provider microgrid 20-2 to the user microgrid 10, It can be provided to the first supplier microgrid 20-1 and the second supplier microgrid 20-2.

The settlement unit 340 may settle the ESS sharing cost and power transaction cost.

* Operation of multi-microgrid integrated operating system using cloud energy storage device *

Referring to FIG. 3 , first, an ESS sharing contract may be concluded between the user microgrid 10 and the integrated operation center 300 ( S1 ). In this case, the contract signing unit 310 may receive ESS capacity information to be shared by the user microgrid 10 from the user microgrid 10 . In this case, the commonization unit 320 may allocate a virtual ESS for the ESS capacity that the user microgrid 10 wants to share to the corresponding user microgrid 10 . Here, the allocated virtual ESS capacity may be the ESS capacity requested by the corresponding user microgrid 10, and may always mean that the SOC is 100%. By always setting the SOC of the virtual ESS allocated to the user microgrid 10 to 100%, the EMS 11 of the user microgrid can always make a discharge request to the virtual ESS regardless of the SOC. In addition, when the virtual ESS is allocated, the commonization unit 320 may provide the control right of the virtual ESS having the allocated capacity to the user microgrid EMS 11 to which the corresponding virtual ESS capacity is allocated.

And, the ESS sharing contract may be concluded between the first supplier microgrid 20-1 and the integrated operation center 300 (S2-1). In this case, the contract signing unit 310 may receive ESS capacity information that the first supplier microgrid 20-1 wants to share from the first supplier microgrid 20-1. In this case, the commonization unit 320 may allocate a virtual ESS for the ESS capacity that the first provider microgrid 20-1 wants to share to the corresponding first provider microgrid 20-1. Here, the allocated virtual ESS capacity may be the ESS capacity requested by the corresponding first provider microgrid 20-1, and may always mean that the SOC is 0%. By always setting the SOC of the virtual ESS allocated to the first provider microgrid 20-1 to 0%, the first provider microgrid EMS 21-1 always sends a charging request to the virtual ESS regardless of the SOC. can do. In addition, when the virtual ESS is allocated, the commonization unit 320 may provide the control right of the virtual ESS having the allocated capacity to the first provider microgrid EMS 21-1 to which the corresponding virtual ESS capacity is allocated.

Then, a power transaction contract may be concluded between the second provider microgrid 20-2 and the integrated operation center 300 (S2-2). In this case, the content of the power transaction contract may include information on the maximum amount of daily power that the second supplier microgrid 20 - 2 must supply for supply and demand balancing.

In addition, the user microgrid EMS 11 may provide next-day demand forecast information to the virtualization unit 330 ( S3 ). Here, the user microgrid EMS 11 may generate next-day demand forecast information based on a past load usage pattern in the user microgrid.

In addition, the first supplier microgrid EMS 21-1 may provide next-day supply prediction information to the virtualization unit 330 (S4). The first supplier microgrid EMS 21-1 may generate next-day supply forecast information by synthesizing next-day supply forecast information, next-day weather information, past generation pattern, and the like. The next-day supply prediction information may be generation amount prediction information for a power source that cannot control the output.

Then, the virtualization unit 330 may establish a charge/discharge plan (S5). 4 shows a curve obtained by subtracting the next day usage based on the next day demand forecast information of the user microgrid EMS 11 from the next day supply amount curve based on the next day supply forecast information of the first supplier microgrid EMS 21-1. The virtualization unit 330 may generate curve information obtained by subtracting a usage amount from a supply amount as shown in FIG. 4 .

Then, the virtualization unit 330 may determine whether there is a supply shortage section in which the amount used exceeds the supply amount (S6). 6 exemplifies that a supply shortage period exists in the period t1-t2.

In S6 , if it is determined that there is a shortage section, the virtualization unit 330 may calculate the total amount of shortage in the shortage section. And, while providing the information on the total insufficient amount of supply and the start time t1 of the short supply period to the second supplier microgrid 20-2, it is possible to request the supply of the insufficient supply (S7).

And, the EMS (21-2) of the second supplier microgrid that has been requested to supply may respond to the supply request (S8). At this time, the EMS (21-2) of the second supplier microgrid may establish a supply plan of the total supply shortage. The supply plan may be established in such a way that the entire supply shortage is supplied before the start time t1 of the shortage period. In addition, the EMS 21 - 2 of the second supplier microgrid may provide the supply amount information to the virtualization unit 330 during the supply time (t3-t4 in FIG. 3 ). At this time, the virtualization unit 330 accumulates the supply amount information for the supply time provided by the EMS 21-2 of the second supplier microgrid to the next day supply curve, and the corrected curve information obtained by subtracting the usage from the generated supply curve. can create In FIG. 5, the curve before correction is curve information obtained by subtracting the amount of supply from the amount of supply generated by the virtualization unit in S5. In FIG. 5, the curve after correction is corrected curve information obtained by subtracting the amount of use from the supply amount curve generated by accumulating the supply amount information for the supply time provided by the EMS 21-2 of the second supplier microgrid to the next day supply curve. Thereby, the virtualization unit 330 can establish a supply-demand balancing plan by using the output controllable distributed power supply 22-2 of the second supplier microgrid 20-2 before the start of the next day.

And, when the next day is started, the virtualization unit 330 may receive a discharge request from the EMS 11 of the user microgrid and a charge request of the first provider microgrid 20-1 (S9, S10). And, at the supply time according to the supply plan according to S8, the virtualization unit 330 may receive a charging request transmitted by the EMS 21-2 of the second microgrid. At this time, the EMS 11 of the user microgrid may perform a control operation in the form of requesting a discharge to the virtual ESS for receiving power from the virtual ESS, and the EMS 21-1 of the first provider microgrid is the virtual ESS A control operation may be performed in the form of requesting charging to the virtual ESS for transmission to the ESS.

At this time, the virtualization unit 330 may determine whether the amount of charge requested by the first supplier microgrid 20-1 is greater than the amount of discharge requested by the user microgrid 10 (S11). If it is determined in S11 that the amount of charge requested by the first provider microgrid 20-1 is greater than the amount of discharge requested by the user microgrid 10, the virtualization unit 330 sends the first provider microgrid to the EMS 31 of the storage microgrid. A charge request may be made to charge the amount obtained by subtracting the amount of discharge requested by the user microgrid 10 from the amount of charge requested by the grid 20-1 (S12). At this time, the EMS 31 of the storage microgrid is the ESS 32 to charge the ESS 32 by subtracting the amount of discharge requested by the user microgrid 10 from the amount of charge requested by the first provider microgrid 20-1. ) can be controlled. And, at the same time as the charging request, the virtualization unit 330 may notify the EMS 11 of the user microgrid that the discharging operation by the virtual ESS has been completed, and the virtual ESS to the EMS 21-1 of the first provider microgrid It can be informed that the charging operation is completed by (S12). At this time, if there is a charging request from the second provider microgrid 20-2 in S10, the virtualization unit 330 may notify the second provider microgrid 20-2 that the charging operation is complete.

Contrary to this, if it is determined in S11 that the amount of charge requested by the first supplier microgrid 20-1 is not greater than the amount of discharge requested by the user microgrid 20, the virtualization unit 330 is the first supplier microgrid 20-1 ) can determine whether the amount of charge requested is smaller than the amount of discharge requested by the user microgrid 10 (S13). If it is determined in S13 that the amount of charge requested by the first provider microgrid 20-1 is smaller than the amount of discharge requested by the user microgrid 10, the virtualization unit 330 sends the user microgrid ( A discharge request may be made to discharge an amount obtained by subtracting the amount of charge requested by the first supplier microgrid 20-1 from the amount of discharge requested by 10) (S14). At this time, the EMS 31 of the storage microgrid causes the ESS 32 to discharge an amount obtained by subtracting the charge amount requested by the first provider microgrid 20-1 from the amount of discharge requested by the user microgrid 10. ) can be controlled. And, at the same time as the discharge request, the virtualization unit 330 may notify the EMS 11 of the user microgrid that the discharge operation by the virtual ESS has been completed, and the virtual ESS to the EMS 21-1 of the first provider microgrid may indicate that the charging operation has been completed. At this time, if there is a charging request from the second provider microgrid 20-2 in S10, the virtualization unit 330 may notify the second provider microgrid 20-2 that the charging operation has been completed.

In S13, if it is determined that the amount of charge requested by the first provider microgrid 20-1 is not smaller than the amount of discharge requested by the user microgrid 10, the virtualization unit 330 directly EMS of the user microgrid without a charge/discharge request operation The completion of the discharging operation by the virtual ESS may be notified to (11), and the completion of the charging operation by the virtual ESS may be notified to the EMS 21-1 of the microgrid of the first supplier (S15). At this time, if there is a charging request from the second provider microgrid 20-2 in S10, the virtualization unit 330 may notify the second provider microgrid 20-2 that the charging operation is complete. This means that in S13, it is determined that the amount of charge requested by the first provider microgrid 20-1 is not smaller than the amount of discharge requested by the user microgrid 10 is that the charge amount requested by the first provider microgrid 20-1 is the user micro This is because it means that the grid 10 is equal to the requested discharge amount.

In this way, only when the amount of charge requested by the first supplier microgrid 20-1 is not the same as the amount of discharge requested by the user microgrid 10, by controlling the charge/discharge of the ESS 22, the Lifespan can be extended. Through the above operation method, all or part of the electric power corresponding to the amount of charge requested by the first supplier microgrid 20 - 1 may be directly transmitted to the user microgrid 10 through the DC power line DL.

In S12, S14 and S15, by notifying the EMS (21 - 1, 21 - 2) of the first and second supplier microgrid that the charging operation is completed, the EMS (21-) of the first and second supplier microgrid 1, 21-2) can be recognized as the actual charging operation has been performed. And, in S12, S14, and S15, by notifying the EMS 11 of the user microgrid that the discharging operation is completed, the EMS 11 of the user microgrid can recognize that the actual discharging operation has been performed.

And, when the next day ends, the settlement unit 340 may perform the settlement by reflecting the power transaction result (S16). The settlement unit 340 through the meters 13-1 and 13-2 installed at the respective power inlet ends of the user microgrid 10, the user microgrid 10, each of the power received through the DC power line (DL) ( In other words, the amount of electricity purchased) can be determined. The settlement unit 340 may charge based on the power purchase amount of each user microgrid 10 . And, the settlement unit 340 through the meters (23-1, 23-2) installed in the power output terminal of each of the plurality of supplier microgrids (20-1, 20-2) is a plurality of supplier microgrids (20-1, 20-1, 20-2) It is possible to analyze the amount of electric power transmitted through each DC power line (DL) (in other words, electric power sales volume). The settlement unit 340 may make a payment based on the electricity sales volume of each of the plurality of supplier microgrids 20-1 and 20-2. In this case, the operator of the integrated operation device 300 may receive a brokerage fee according to the power transaction from the user microgrid and/or the provider microgrid.

In addition, the operator of the integrated operation device 300 shares ESS resources from a plurality of user microgrids 10-1 and 10-2, the storage microgrid 30 and the provider microgrids 20-1 and 20-2. Fees may be paid according to the provision of operating services. When the storage microgrid 30 operator is the same as the operator of the integrated operating device 300, the storage microgrid 30 fee may be omitted. When the operator of the storage microgrid 30 and the operator of the integrated operation device 300 are different, the integrated operation device 300 may pay a price according to the use of the ESS 32 of the storage microgrid 30 .

The integrated operating device 300 includes a plurality of user microgrids 10-1, 10-2, storage microgrids 30 and provider microgrids 20-1, 20- through resource sharing within the microgrid cluster 100. By operating 2) optimally, the energy independence of the microgrid cluster 100 can be guaranteed and supply-demand balance can be maintained. And, through resource sharing, it is possible to minimize the construction cost of the plurality of user microgrids 10-1 and 10-2, the storage microgrid 30, and the provider microgrid 20-1 and 20-2.

Of course, the above-described microgrid operating system can be implemented in a more evolved, more complex, and more diverse form to accommodate more diverse microgrids.

100: microgrid cluster
10-1, 10-2: User microgrid
20-1: First supplier microgrid
20-2: 2nd supplier microgrid
30: storage microgrid
200: communication network
300: Integrated Operations Center

Claims (5)

a microgrid cluster comprising a user microgrid, a provider microgrid, and a storage microgrid; and
A multi-microgrid integrated operating system using a cloud energy storage device including an integrated operation center that allocates virtual ESS to the user microgrid and the provider microgrid according to the ESS resource sharing contract agreement and provides a virtual ESS operating environment. The method of claim 1,
The microgrid cluster is a multi-microgrid integrated operating system using a cloud energy storage device, characterized in that it is completely independent from the power system and has an independent form. The method of claim 1,
The integrated operation center is
a contract signing unit for performing the ESS resource sharing contract signing procedure with the user microgrid and the supplier microgrid;
a commonization unit for allocating virtual ESS to the user microgrid and the provider microgrid that have signed the contract using the ESS resource of the storage microgrid;
a virtualization unit providing an operating environment of the virtual ESS allocated to the user microgrid and the provider microgrid to the user microgrid and the provider microgrid; and
A multi-microgrid integrated operating system using a cloud energy storage device, characterized in that it includes a settlement unit that settles the ESS sharing cost and power transaction cost. 4. The method of claim 3,
The user microgrid EMS fuses the discharge control operation of the virtual ESS to operate the user microgrid,
The provider microgrid EMS fuses the virtual ESS charging control operation to operate the provider microgrid. A multi-microgrid integrated operating system using a cloud energy storage device. 5. The method of claim 4,
The virtualization unit controls the charging and discharging of the ESS of the storage microgrid only when the amount of charge requested by the provider microgrid is not the same as the amount of discharge requested by the user microgrid. Multi-microgrid using a cloud energy storage device, characterized in that Integrated operating system.

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