KR20200110589A - System, Apparatus, and Method for controlling energy - Google Patents

Abstract

The present invention relates to an energy control system, an energy control device, and a method thereof, which can reduce design cost or installation cost by performing energy storage function without using an energy storage system. The energy control system according to the present disclosure includes: a communication unit that communicates with a building; and the energy control device that determines thermal dynamic properties based on the insulation properties of the building received by the communication unit, groups buildings based on thermal dynamic properties, schedules the timing to control the group, and controls the group according to the scheduled timing when a current time is a management time.

Description

Energy control system, energy control device, and method thereof {System, Apparatus, and Method for controlling energy}

The present disclosure relates to an energy control system, an energy control device, and a method thereof.

Currently, electricity bills consist of a basic charge and a usage charge. The basic rate is aimed at recovering fixed costs such as depreciation costs due to investment in power supply facilities, and the usage fee is mainly aimed at recovering variable costs such as fuel costs incurred by electricity usage. Recently, in order to limit excessive energy use, a power peak rate system has been introduced in which the basic rate of electricity is charged based on the power peak.

The power peak is the average power for 15 minutes (ie, power consumption [kWh]/supply time [h]), and the maximum monthly value among the readings at a certain time becomes the power peak for the current month. As such, the power peak is the main cause of increasing the electricity rate, that is, the base rate, and thus it is necessary to control the power peak in order to reduce the base rate.

However, the conventional power peak control method is a method of reducing the power peak by cutting off power for each single building, so there is a problem that the building load cannot be efficiently managed.

In addition, according to the conventional power peak control method, when the power peak occurs during the power peak time, the power of the building's air conditioning and heating facilities is cut off, which impairs the comfort felt by the occupants of the building.

Meanwhile, the power peak can be reduced by using an energy storage system (ESS) in addition to the conventional power peak control method, but there is a problem in that the installation cost of the ESS is high.

Against this background, the present disclosure aims to provide an energy control system, an energy control device, and a method for efficiently reducing power peaks by grouping buildings in an area where a plurality of buildings are arranged and controlling them for each group.

In addition, the present disclosure is to provide an energy control system, an energy storage device, and a method thereof, which greatly reduces power bills according to power peaks by efficiently controlling the building load during a time when the building load increases.

In addition, the present disclosure is to provide an energy control system, an energy storage device, and a method thereof capable of appropriately maintaining the comfort felt by occupants even if the power peak is controlled during a time when the building load increases.

In addition, the present disclosure is to provide an energy control system, an energy control device, and a method thereof capable of reducing design cost or installation cost by performing an energy storage function without using an energy storage system.

In order to solve the above-described problem, in one aspect, the present disclosure determines a thermal dynamic property based on a communication unit in communication with one or more buildings and a thermal insulation property of a building received by the communication unit, and groups the buildings based on the thermal dynamic property. , It provides an energy control system including an energy control device that schedules a timing for controlling a group, and controls the group according to the scheduled timing when the current time is a management time.

In another aspect, the present disclosure provides a thermal dynamic property determination unit for determining a thermal dynamic property based on the thermal insulation property of a building, a group setting unit for grouping a plurality of buildings based on the thermal dynamic property, and a load adjustment time of the group based on the thermal dynamic property. An energy control device including a facility controller that determines for each group, schedules a timing for controlling the group based on the load adjustment time, and outputs a control signal for controlling the group according to the timing. to provide.

In another aspect, the present disclosure provides a thermal dynamic characteristic determination step of determining a thermal dynamic characteristic based on the thermal insulation characteristic of a building, a group setting step of grouping a plurality of buildings based on the thermal dynamic characteristic, and a load control of the group based on the thermal dynamic characteristic Energy control including a facility control step of determining a time for each group, scheduling a timing for controlling the group based on the load adjustment time, and outputting a control signal for controlling the group according to the timing Provides a way.

As described above, according to the present disclosure, the present disclosure provides an energy control system, an energy control device, and a method for efficiently reducing power peaks by grouping buildings in an area where a plurality of buildings are arranged and controlling them for each group. Can provide.

In addition, according to the present disclosure, the present disclosure can provide an energy control system, an energy storage device, and a method thereof that greatly reduce power charges according to power peaks by efficiently controlling the building load during a time when the building load increases.

In addition, according to the present disclosure, the present disclosure can provide an energy control system, an energy storage device, and a method thereof capable of appropriately maintaining the comfort felt by the occupants even if the power peak is controlled during a time when the building load increases.

Further, according to the present disclosure, the present disclosure can provide an energy control system, an energy control device, and a method thereof capable of reducing design cost and installation cost by performing an energy storage function without using an energy storage system.

1 is a diagram schematically showing an energy control system and a building according to the present disclosure.
2 is a block diagram illustrating an energy control device according to the present disclosure.
3 is a diagram illustrating an example of a change rate of indoor temperature for each building stored in a database according to the present disclosure.
4 is a timing diagram illustrating an embodiment of controlling a plurality of groups at a management time according to the present disclosure.
5 is a timing diagram for explaining another embodiment of controlling a plurality of groups at a management time according to the present disclosure.
6 is a flowchart illustrating an energy control method according to the present disclosure.
7 is a flowchart illustrating a method of controlling a plurality of groups at a management time according to the present disclosure.
8 is a flowchart illustrating a method of determining a thermal dynamic characteristic according to the present disclosure.

Hereinafter, some embodiments of the present disclosure will be described in detail through exemplary drawings. In describing the constituent elements of the present disclosure, terms such as first, second, A, B, (a), and (b) may be used. These terms are only used to distinguish the component from other components, and the nature, order, or order of the component is not limited by the term. When a component is described as being "connected", "coupled" or "connected" to another component, the component may be directly connected or connected to that other component, but another component between each component It should be understood that elements may be “connected”, “coupled” or “connected”.

1 is a diagram schematically illustrating an energy control system 100 and buildings 10, 20, and 30 according to the present disclosure.

Referring to FIG. 1, the energy control system 100 according to the present disclosure may manage power usage of load facilities of one or more buildings 10, 20, and 30 existing in a unit area. Specifically, the energy control system 100 may control the power consumption of the heating and cooling facilities by controlling the heating and cooling facilities included in each of the plurality of buildings 10, 20, and 30 existing in a certain area.

In the present specification, the energy control system 100 controls the cooling and heating facilities means a control that temporarily increases or decreases the set temperature of an operating cooling and heating facility for a certain period of time, a control that operates the cooling and heating facilities or stops the operation of the cooling and heating facilities, etc. Includes. However, it is not limited thereto.

Meanwhile, the energy control system 100 may control the heating and cooling facilities of the buildings 10, 20, and 30 according to whether the current time corresponds to the management time.

Here, the management time may mean a time when the power consumption of the load facility of the building 10, 20, and 30 or the load consumption intensively rises. For example, the management time may mean at least one of an intermediate load time zone and a maximum load time zone applied according to the power peak system. Since the above-described intermediate load time zone or maximum load time zone may be adjusted according to quarters, seasons, and the like, the management time may also be changed according to quarters, seasons, and the like.

For example, if the current time corresponds to the management time, the energy control system 100 temporarily suspends the operation of the cooling and heating facilities of the buildings 10, 20, and 30 according to the control sequence determined by a certain standard or The power consumption can be reduced by performing a control that temporarily changes (increases or decreases) the set temperature. As a method of reducing power consumption by changing the set temperature of the cooling and heating facility, for example, it may be performed by lowering the target temperature in the case of cooling facilities and increasing the target temperature in the case of heating facilities.

The management time may be set in advance, may be set based on a demand response (DR) with an upper control device (not shown) that controls the power system, or may be determined as a time period in which power consumption needs to be reduced for other reasons.

Meanwhile, when the energy control system 100 manages the building load and power peak for each single building for a plurality of buildings 10, 20, and 30, excessive power charges may occur due to the power peak.

In order to control load equipment included in each of the plurality of buildings 10, 20, 30, the energy control system 100 can communicate with each of the buildings 10, 20, and 30. That is, the energy control system 100 may receive information on the buildings 10, 20, and 30 required to control the load facility, and transmit a control signal accordingly.

Here, the information of the building (10, 20, 30) is the thermal insulation characteristics of the building (10, 20, 30), the indoor temperature of the building (10, 20, 30), the presence or absence of the heating and cooling facilities, the set temperature of the heating and cooling facilities, the building (10, 20, 30) It may include the presence or absence of occupants in the interior, the amount of insolation flowing into the building (10, 20, 30). However, it is not limited thereto.

In addition, the energy control system 100 may group a plurality of buildings 10, 20, and 30 according to a predetermined criterion to perform group control.

Therefore, although not shown, the energy control system 100 according to the present disclosure may include a communication unit that communicates with one or more buildings 10, 20, and 30, an energy control device, and a database.

The energy control device determines the characteristics of each of the plurality of buildings 10, 20, 30 based on the information of the buildings 10, 20, 30 received by the communication unit, and the plurality of buildings 10, 20, 30 Buildings 10, 20, and 30 having similar characteristics are set as a group, and a timing for controlling the group is scheduled to control each group according to a timing determined for each group.

Hereinafter, the energy control device according to the present disclosure will be described in detail.

2 is a block diagram for describing the energy control device 200 according to the present disclosure.

Referring to FIG. 2, the energy control device 200 according to the present disclosure may include a thermal dynamic property determination unit 210, a group setting unit 220, a facility control unit 230, and the like.

The thermal dynamic property determination unit 210 may determine the thermal dynamic property based on the thermal insulation property of the building included in the building information.

Here, the insulation properties of the building may be variously determined according to the insulation material used in the building, the construction year of the building, the thickness of the outer wall of the building, and the area.

Here, the dynamic characteristic may mean the output characteristic of the output for the input that fluctuates in the operated and controlled system, and the thermal dynamic characteristic of the building according to the present disclosure controls the cooling and heating facilities of the building within the range of maintaining thermal comfort. It can be a control time. These thermal and dynamic characteristics can be determined by the outer shell of the building, the insulation performance of the windows, the capacity and performance of the cooling and heating facilities, the construction year, the insulation material, and the like.

At this time, thermal comfort may be calculated by predicted mean vote (PMV).

Meanwhile, the thermal dynamic characteristic determination unit 210 may determine the thermal dynamic characteristic based on the thermal insulation characteristic of the building and the indoor temperature change rate for each building previously stored in the database.

Here, the rate of change of the indoor temperature may mean a rate of change of the indoor temperature of the building per unit time. Since the indoor temperature change rate varies depending on the insulation characteristics of the building, it can be calculated for each building and stored in a database. A detailed description of the rate of change of the indoor temperature will be described later with reference to FIG. 3.

On the other hand, when the communication unit included in the energy control system 100 according to the present disclosure receives information on the set temperature of the building's heating and cooling facilities and the current indoor temperature of the building, the thermal dynamic characteristic determination unit 210 is The thermal and dynamic characteristics of each building can be determined by additionally using the set temperature of and the current indoor temperature of the building. A detailed description will be described later with reference to FIG. 8.

The group setting unit 220 may group a plurality of buildings based on thermal dynamic characteristics. Specifically, the group setting unit 220 may classify buildings having the same or similar thermal dynamic characteristics among a plurality of buildings into the same group.

On the other hand, the group setting unit 220 may differently set a range of the minimum and maximum values for the thermal dynamic characteristics for each group, and determine whether the thermal dynamic characteristics of a specific building are included in a specific range, thereby grouping a plurality of buildings.

Referring to FIG. 1, for example, both the first thermal dynamic characteristics of the first building 10 and the second thermal dynamic characteristics of the second building 20 are included in the first range for the thermal dynamic characteristics of the first group. 3 When the third thermal dynamic characteristic of the building 30 is included in the second range for the thermal dynamic characteristic of the second group, the group setting unit 220 selects the first building 10 and the second building 20 as the first. Classify into groups, and classify the third building 30 into a second group.

The facility control unit 230 determines the load adjustment time of the group for each group based on the thermal dynamic characteristics, schedules a timing for controlling the group based on the load adjustment time, and controls the group according to the timing. It is possible to output a control signal for doing so.

Here, the meaning that the facility control unit 230 controls the group may mean that it controls the cooling and heating facilities of the building belonging to the group, and at this time, the facility control unit 230 controls the cooling and heating facilities similarly to the one described with reference to FIG. To do this may mean a control that temporarily changes the set temperature of the heating and cooling facilities, operates the cooling and heating facilities, or stops the operation of the cooling and heating facilities according to the thermal and dynamic characteristics of the building.

In accordance with the present disclosure described below, the facility control unit 230 controls the heating and cooling facilities by reducing the set temperature of the heating and cooling facilities for a certain period of time according to the thermal dynamic characteristics, and thermally reducing the set temperature of the heating and cooling facilities during the cooling operation. It may mean a control that increases for a certain period of time according to the dynamic characteristics, a control that operates a cooling/heating facility or stops the operation according to a thermal dynamic characteristic.

Therefore, although the present specification describes an embodiment in which the facility control unit 230 operates or stops the operation according to thermal and dynamic characteristics, another embodiment in which the facility control unit 230 controls to change the set temperature of the heating and cooling facility is also described. Likewise can be applied.

Here, the load adjustment time may be a thermal dynamic characteristic representing a group, and within this time may mean a time arranged to control the heating and cooling facilities of one or more buildings belonging to a specific group. In this case, when the thermal dynamic characteristic is the control time, the load adjustment time of the specific group may be equal to or greater than the thermal dynamic characteristic of one or more buildings belonging to the specific group.

For example, when the thermal dynamic characteristic is the control time, the facility control unit 230 performs control for each group belonging to the group to stop the operation of the cooling and heating facilities of the building belonging to the group within the control time within the load adjustment time.

Here, when the thermal comfort is expressed by PMV, a range in which the thermal comfort is maintained may satisfy a range in which the predicted mean vote (PMV) is -0.5 or more and 0.5 or less.

As another example with reference to FIG. 1, when the first building 10 belongs to the first group, the facility control unit 230 controls the air conditioning and heating facilities of the first building 10 within the first load adjustment time of the first group. The operation is stopped during the first control time of the first building 10.

On the other hand, if the current time corresponds to the management time, the facility control unit 230 may schedule the timing in the order of increasing the load adjustment time from when the current time corresponds to the management time.

For example, when the first load adjustment time of the first group is greater than the second load adjustment time of the second group, the facility control unit 230 first starts the control of the first group when the current time corresponds to the management time zone. And, after the control of the first group is ended or during the first load adjustment time, control of the second group is started. A detailed description will be described later with reference to FIGS. 4 and 5.

On the other hand, if the operation of the cooling and heating facilities of the building is temporarily stopped during the management time, it may be difficult to maintain an appropriate indoor temperature in the building. Therefore, it is necessary to operate the cooling and heating facilities in advance during the period when the electricity bill, energy price is low, or when the building load is low.

That is, if the current time corresponds to the management time, the facility control unit 230 controls the heating and cooling facilities of the building belonging to the group according to the respective thermal and dynamic characteristics, and if the current time does not correspond to the management time, the management time Air conditioning and heating facilities can be controlled in advance.

For example, when the current time does not correspond to the management time, the facility control unit 230 may operate the cooling and heating facilities in advance during a time period when energy prices are low or a time period when the building load is low.

As described above, the energy control device 200 according to the present disclosure may reduce a power peak by utilizing the thermal dynamic characteristics of a building as an energy storage device.

3 is a diagram illustrating an example of a change rate of indoor temperature for each building stored in a database according to the present disclosure.

3, in the database according to the present disclosure, in the database according to the present disclosure, each building (A, B, C, etc., in a state in which the cooling and heating facilities of the building are not operated and no people are present in the building (non-occupied state)). The indoor temperature change rate (a1, b1, c1, etc.) determined by) is stored.

Here, the rate of change of the indoor temperature may be determined according to the temperature difference between the indoor temperature and the external temperature in the non-occupied situation of the building, and the amount of insolation flowing into the building. The occupant situation in the building, the indoor temperature of the building, the external temperature, and the amount of insolation are detected or measured by sensors or other measuring devices included in the building, and may be transmitted to the energy storage system.

On the other hand, the indoor temperature change rate (a1, b1, c1) for each building in the non-occupancy state is a value that does not take into account the occupants of the building, heating devices such as lighting installed in the building, and the operation of the cooling and heating facilities. It is difficult to apply the rate of temperature change.

Accordingly, the rate of change of the indoor temperature (a1, b1, c1) in the non-occupied state needs to be corrected based on the occupant, the operating state of the air conditioner and the like.

That is, the thermal dynamic property determination unit 210 may correct the indoor temperature change rate data a1, b1, and c1 for each building based on at least one of whether there are occupants of the building or whether the cooling and heating facilities of the building are operating for cooling and heating.

As an example, when the information on the occupants of the building is input, the thermal dynamic characteristic determination unit 210 corrects the indoor temperature change rates (a1, b1, c1) in the non-occupied state to correct the indoor temperature change rates (a2, b2) in the occupied state. , generate data for c2). Then, the thermal dynamic characteristic determination unit 210 updates the database by storing the corrected indoor temperature change rate in the database.

As another example, the thermal dynamic characteristic determination unit 210 reduces the indoor temperature change rates (a1, b1, c1) according to a preset correction value when the cooling and heating facility is in operation, and the corrected indoor temperature change rates (a3, b3, c3) You can create data for

This is because the indoor heating effect is generated by the heating operation of the cooling/heating facility in cold weather, so that the degree to which the indoor temperature of the building is lowered by the heating effect is delayed according to the rate of change of the indoor temperature in the non-occupancy situation.

As another example, when the cooling and heating facility is operating, the indoor temperature change rate (a1, b1, c1) may be increased according to the correction value to generate data on the corrected indoor temperature change rate (a4, b4, c4).

This is because the indoor heating effect is generated by the cooling operation of the heating/cooling facility in hot weather, and thus the indoor temperature of the building is accelerated by the heating effect to the extent that the indoor temperature of the building increases according to the change rate of the indoor temperature in the non-occupancy situation.

As described above, the energy control device 200 according to the present disclosure can accurately classify buildings having the same type into the same group by correcting the rate of change of indoor temperature by reflecting the actual state of the building, and increase the accuracy of scheduling. It provides the effect that can be made.

Hereinafter, an embodiment of controlling a plurality of groups classified according to the aforementioned thermal dynamic characteristics will be described in detail in terms of timing.

4 is a timing diagram illustrating an embodiment of controlling a plurality of groups at a management time according to the present disclosure.

If the current time corresponds to the management time, the facility control unit 230 included in the energy control device 200 according to the present disclosure can schedule the timing in the order of increasing the load adjustment time from when the current time corresponds to the management time. have.

Referring to FIG. 4, for example, the group setting unit 220 groups a plurality of buildings into two or more groups including different first groups and second groups, and the first load adjustment time of the first group (T _{If 1-off} ) is greater than the second load adjustment time (T _2-off ), and the current time corresponds to the management time zone (T _peak ), the facility control unit 230 first starts the control of the first group and sequentially Control of the second group is started.

Here, the control of the first group means controlling the cooling and heating facilities of the buildings belonging to the first group during the first load adjustment time, and the control of the second group is the cooling and heating facilities of the buildings belonging to the second group during the second load adjustment time. Means to control.

On the other hand, the facility control unit 230 starts the control of the second group after the first load adjustment time (T _1-off ) has elapsed when scheduling the timing to control the group, and the second load adjustment time (T _{2- off} ), control of the second group may be performed, and control of the second group may be started during the first load adjustment time T _1-off .

In view of a control signal controlling a group, referring to FIG. 4 for another example, when the group setting unit 220 is grouped into a first group and a second group, the facility control unit 230 controls the first group. A first control signal and a second control signal for controlling the second group are output, and each of the first control signal and the second control signal has a first state and a second state.

Here, the first state may mean a state in which operation control for operating the cooling/heating facility of a building belonging to the group can be performed and may correspond to a high signal. In the first state, the cooling and heating facilities of the buildings belonging to the group can be operated. However, it is not limited thereto.

The second state means a state in which interruption control for stopping the operation of cooling and heating facilities of a building belonging to the group can be performed, and may correspond to a Low signal. In the second state, the operation of the cooling and heating facilities of the buildings belonging to the group may be stopped according to the respective thermal and dynamic characteristics. However, it is not limited thereto.

At this time, after the second control signal transitions from the first state to the second state during a period in which the first control signal is in the second state, and the second control signal changes from the first state to the second state, the first control signal Transitions from the second state to the first state.

In addition, a time difference between a transition period in which the first control signal transitions from the second state to the first state and the transition period in which the second control signal transitions from the first state to the second state is less than a preset allowable time difference.

Meanwhile, a transition section that transitions from the first state to the second state may mean a section in which control starts to stop the operation of the cooling/heating facility of a building belonging to the group according to a thermal dynamic characteristic. However, it is not limited thereto.

The above-described example is not limited to that shown in FIG. 4, and can be applied equally to three or more groups, and conversely, similarly implemented when the timing for controlling the second group is earlier than the timing for controlling the first group. Can be.

As described above, the energy control apparatus 200 according to the present disclosure provides an effect of significantly reducing power charges by scheduling control timing for each group at the management time.

Hereinafter, the timing diagram shown in FIG. 4 and another embodiment will be described in detail.

5 is a timing diagram for explaining another embodiment of controlling a plurality of groups at a management time according to the present disclosure.

As described above, the facility control unit 230 may schedule the timing in the order of the large load adjustment time, and when a plurality of buildings are grouped into different first and second groups, the facility control unit 230 is used as the first group. Timings for the control of the first group and the control of the second group may be scheduled according to the first load adjustment time T _1-off and the second load adjustment time T _2-off of.

On the other hand, during the first load adjustment time (T _1-off ) and the second load adjustment time (T _2-off ), the operation of the cooling and heating facilities of the buildings belonging to each group may be stopped, so that the indoor temperature of the building is set to the set temperature. It will increase or decrease. Accordingly, after the first load control time T _1-off and the second load control time T _2-off have elapsed, it is necessary to restart the air conditioning and heating facilities. At this time, in order to maintain thermal comfort, it is necessary to operate the cooling and heating facilities until the indoor temperature (initial indoor temperature) of the building is reached before the operation of the cooling and heating facilities is stopped.

For example, after the operation of the cooling and heating facilities of each building belonging to the group during the load adjustment time is stopped according to the respective thermal and dynamic characteristics, the current indoor temperature of the building is before the operation of the cooling and heating facilities is stopped. Control of restarting the operation of the heating and cooling facilities until the initial indoor temperature is reached.

In addition, when the current indoor temperature reaches the initial indoor temperature, the facility control unit 230 performs control of stopping the operation of the cooling and heating facility according to the thermal dynamic characteristics.

Referring to FIG. 5 from the viewpoint of the control signal controlling the group, for example, when the current time corresponds to the management time, the transition section that transitions from the first state to the second state is the operation of the cooling and heating facilities of the building belonging to the group. It may mean a section in which control starts to stop according to thermal dynamic characteristics. However, as described above, it is not limited thereto.

Conversely, a transition section that transitions from the second state to the first state may mean a section in which control for operating the cooling and heating facility starts. However, as described above, it is not limited thereto.

In this case, when the current time corresponds to the management time and the plurality of buildings are classified into the first group and the second group, the period in which the first control signal of the first group is in the first state is the first state of the first control signal. When is transitioned to the second state, it means a period for reaching the indoor temperature (eg, initial indoor temperature) of the building belonging to the first group.

In addition, during the period in which the second control signal of the second group is in the first state, when the first state of the second control signal transitions to the second state, the indoor temperature of the building belonging to the second group (for example, the initial indoor Temperature).

Here, the first state and the second state are as described above with reference to FIG. 4.

Although not shown, the energy saving effect is increased by first controlling a group having a large load adjustment time, but power of a building belonging to the group is first cut off, which may cause inconvenience to occupants of the building. Accordingly, the energy control apparatus 200 according to the present disclosure may differentially pay incentives corresponding to the reduced energy cost in the order of groups having a large energy saving effect.

As described above, the energy control device 200 according to the present disclosure efficiently manages peak power during a management time period, thereby minimizing power charges and maintaining thermal comfort, thereby providing a comfortable environment to occupants of a building.

Hereinafter, an energy control method capable of performing all of the present disclosure will be described.

6 is a flowchart illustrating an energy control method according to the present disclosure.

6, the energy control method according to the present disclosure includes a thermal dynamic property determination step (S610) of determining a thermal dynamic property based on the thermal insulation property of a building, and a group setting step of grouping a plurality of buildings based on the thermal dynamic property ( S620) and control for controlling the group according to the timing, determining the load adjustment time of the group for each group based on the thermal dynamic characteristics, scheduling the timing for controlling the group based on the load adjustment time It may include a facility control step (S630) of outputting a signal, and the like.

The thermal dynamic characteristic determination step (S610), the group setting step (S620), and the facility control step (S630) are each of the thermal dynamic characteristics determination unit 210, group setting unit 220, and facility control unit 230 described above with reference to FIG. Since it is the same as the operation of, a detailed description of each step will be omitted.

7 is a flowchart illustrating a method of controlling a plurality of groups at a management time according to the present disclosure.

Referring to FIG. 7, in step S710, a thermal dynamic characteristic (T _off ) for each of a plurality of buildings within a certain unit area is determined.

For example, the thermal dynamic characteristic determination unit 210 determines the thermal dynamic characteristic (T _off ) by using the thermal insulation characteristic of the building, the set temperature of the cooling/heating device of the building, the indoor/outdoor temperature difference of the building, and the current indoor temperature of the building.

When the thermal dynamic characteristics T _off for each of the plurality of buildings are respectively determined, in step S720, the plurality of buildings are grouped according to the thermal dynamic characteristics T _off .

Referring to FIG. 1, for example, the group setting unit 220 has the same or similar thermal dynamic characteristics (T _off ) of the first building 10 and the second building 20, and If not similar to the dynamic characteristic (T _off ), the first building 10 and the second building 20 are classified into a first group, and the third building 30 is classified into a second group.

Meanwhile, when the current time is before the management time zone, in step S730, pre-cooling or pre-heating control is performed on a specific group before the management time zone.

For example, the facility control unit 230 cools or operates heating and cooling facilities of each of the first building 10 and the second building 20 belonging to the first group during a period when energy prices are low or when the building load is low. Control.

Then, when the current time is the management time zone, in step S740, the operation of the heating and cooling facilities of each of the buildings belonging to the first group in the management time zone is stopped during the first load adjustment time.

For example, when the first load adjustment time of the first group is greater than the second load adjustment time of the second group, the facility control unit 230 may perform the management time between the first building 10 and the second building 10 belonging to the first group. Control of stopping the heating and cooling facilities of each of the buildings 20 according to their respective thermal and dynamic characteristics (T _off ) is performed.

Then, in step S750, the operation of the cooling and heating facilities of each of the buildings belonging to the second group in the management time period is stopped during the second load adjustment time.

For example, the facility control unit 230 performs control to stop the cooling and heating facilities of the third building 30 belonging to the second group in accordance with the thermal dynamic characteristics T _off of the third building 30 at the management time.

Hereinafter, a method of determining the thermal dynamic characteristics will be described in detail.

8 is a flowchart illustrating a method of determining a thermal dynamic characteristic according to the present disclosure.

Referring to FIG. 8, in step S810, the indoor and outdoor temperature difference and the amount of insolation of the building are obtained without operating the cooling and heating facilities of the building in a non-occupancy state.

Next, in step S820, the indoor temperature change rate according to the indoor/outdoor temperature difference and the amount of insolation is determined for each building and stored in the database.

Then, in step S830, the rate of change of the indoor temperature stored in the database is corrected according to the rehabilitation situation for each building.

In step S840, the thermal dynamic characteristics are calculated using the difference between the set temperature of the building's heating and cooling facility and the current indoor temperature and the rate of change of the indoor temperature.

For example, the thermal dynamic characteristics determination unit 210 uses the difference between the set temperature of the building's heating and cooling facilities and the current indoor temperature of the building and the indoor temperature change rate, and uses the following [Equation 1] to determine the thermal dynamic characteristics (T _off ) for each building. ) Is calculated.

[Equation 1]

Here, T _set is the set temperature of the building's heating and cooling facilities, T _present is the current indoor temperature of the building, and D _t is the rate of change of indoor temperature.

As described above, according to the present disclosure, the present disclosure provides an energy control system, an energy control device, and a method for efficiently reducing power peaks by grouping buildings in an area where a plurality of buildings are arranged and controlling them for each group. Can provide.

In addition, according to the present disclosure, the present disclosure can provide an energy control system, an energy storage device, and a method thereof that greatly reduce power charges according to power peaks by efficiently controlling the building load during a time when the building load increases.

In addition, according to the present disclosure, the present disclosure can provide an energy control system, an energy storage device, and a method thereof capable of appropriately maintaining the comfort felt by the occupants even if the power peak is controlled during a time when the building load increases.

Further, according to the present disclosure, the present disclosure can provide an energy control system, an energy control device, and a method thereof capable of reducing design cost and installation cost by performing an energy storage function without using an energy storage system.

The description above and the accompanying drawings are merely illustrative of the technical idea of the present disclosure, and those of ordinary skill in the technical field to which the present disclosure pertains, combinations of configurations without departing from the essential characteristics of the present disclosure Various modifications and variations, such as separation, substitution, and alteration, will be possible. Accordingly, the embodiments disclosed in the present disclosure are not intended to limit the technical idea of the present disclosure, but to describe, and the scope of the technical idea of the present disclosure is not limited by these embodiments. That is, as long as it is within the scope of the problem solving of the present disclosure, one or more of the components may be selectively combined and operated. The scope of protection of the present disclosure should be interpreted by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present disclosure.

100: energy control system 200: energy storage device
210: thermal dynamic property determination unit 220: group setting unit
230: facility control unit

Claims (20)

A thermal dynamic property determination unit that determines thermal dynamic properties based on the thermal insulation properties of the building;
A group setting unit for grouping a plurality of buildings based on the thermal dynamic characteristics; And
A load adjustment time of a group is determined for each of the groups based on the thermal dynamic characteristics, and a timing for controlling the group is scheduled based on the load adjustment time, and the group is controlled according to the timing. Energy control device comprising a facility control unit for outputting a control signal for. The method of claim 1,
The thermal dynamic property determination unit,
And determining the thermal dynamic characteristics based on a change rate of indoor temperature for each building previously stored in a database. The method of claim 2,
The room temperature change rate is,
The energy storage device, characterized in that it is determined according to a temperature difference between an indoor temperature and an external temperature in the non-occupied situation of the building and the amount of insolation introduced into the building. The method of claim 2,
The thermal dynamic property determination unit,
And correcting the indoor temperature change rate data for each building based on at least one of whether there are occupants in the building or whether the cooling/heating facility of the building is operating for cooling and heating. The method of claim 4,
The thermal dynamic property determination unit,
When the heating and cooling facility is in heating operation, the rate of change of indoor temperature is reduced according to a preset correction value,
When the cooling and heating facility is in cooling operation, the room temperature change rate is increased according to the correction value. The method of claim 2,
The thermal dynamic property determination unit,
And determining the thermal and dynamic characteristics for each building by using a difference value between the set temperature of the cooling and heating facility of the building and the current indoor temperature of the building and the rate of change of the indoor temperature. The method of claim 1,
The thermal dynamic characteristics,
It is a control time for controlling the cooling and heating facilities of the building belonging to the group within the range of maintaining thermal comfort,
The facility control unit,
And controlling the air conditioning and heating facilities for each of the buildings belonging to the group during the control time within the load adjustment time. The method of claim 7,
The range in which the thermal comfort is maintained,
An energy control device, characterized in that a predicted mean vote (PMV) satisfies a range of -0.5 to 0.5. The method of claim 1,
The group setting unit,
Grouping the plurality of buildings into two or more groups including different first groups and second groups,
The facility control unit,
Outputting a first control signal for controlling the first group and a second control signal for controlling the second group,
Each of the first control signal and the second control signal has a first state and a second state,
The second control signal transitions from the first state to the second state during a period in which the first control signal is in the second state,
And after the second control signal changes from the first state to the second state, the first control signal transitions from the second state to the first state. The method of claim 9,
A period in which the first control signal is in the second state is a first load adjustment time of the first group,
The energy control device, characterized in that the period in which the second control signal is in the second state is a second load adjustment time of the second group. The method of claim 9,
A time difference between a transition period in which the first control signal transitions from the second state to the first state and a transition period in which the second control signal transitions from the first state to the second state is less than or equal to a preset allowable time difference. Energy control device, characterized in that. The method of claim 9,
A transition section that transitions from the first state to the second state is a section starting to control the heating and cooling facilities of the building belonging to the group,
The energy control device, characterized in that the transition section from the second state to the first state is a section in which controlling the heating and cooling facility ends. The method of claim 9,
When the current time corresponds to the management time, a period in which the first control signal is in the first state is when the first state of the first control signal transitions to the second state, the It is the period of reaching the indoor temperature of the building,
The period in which the second control signal is in the first state is a period in which the indoor temperature of the building belonging to the second group is reached when the first state of the second control signal is transitioned to the second state. Energy control device, characterized in that. The method of claim 1,
The facility control unit,
And when the current time corresponds to the management time, the timing is scheduled in the order of increasing the load adjustment time from when the current time corresponds to the management time. The method of claim 14,
The group setting unit,
Grouping the plurality of buildings into two or more groups including different first groups and second groups,
The facility control unit,
When the first load adjustment time of the first group is greater than the second load adjustment time of the second group, first starting to control the cooling and heating facilities of the building belonging to the first group during the first load adjustment time, And controlling the heating and cooling facilities of the buildings belonging to the second group during the second load adjustment time. The method of claim 14,
The facility control unit,
After the heating and cooling facilities of each building belonging to the group are first controlled during the load adjustment time, the second control is performed until the current indoor temperature of the building reaches the initial indoor temperature before the first control. Energy control device. The method of claim 16,
The facility control unit,
When the current indoor temperature reaches the initial indoor temperature, the first control is performed again. The method of claim 1,
The facility control unit,
If the current time corresponds to the management time, control the heating and cooling facilities of the buildings belonging to the group,
When the current time does not correspond to the management time, the heating and cooling facility is controlled in advance before the management time. Determining a thermal dynamic characteristic based on the thermal insulation characteristic of the building;
A group setting step of grouping a plurality of buildings based on the thermal dynamic characteristics; And
A load adjustment time of a group is determined for each of the groups based on the thermal dynamic characteristics, and a timing for controlling the group is scheduled based on the load adjustment time, and the group is controlled according to the timing. Energy control method comprising a facility control step of outputting a control signal for performing. A communication unit that communicates with one or more buildings; And
Determine thermal dynamic characteristics based on the thermal insulation characteristics of the building received by the communication unit, group the buildings based on the thermal dynamic characteristics, schedule timing for controlling the group, and when the current time is a management time, the An energy control system comprising an energy control device for controlling a group according to the scheduled timing.

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