KR20140003041A - Method and apparatus for controlling cost-effective power consumption - Google Patents

Abstract

Disclosed are an apparatus for controlling cost-effective electricity consumption and a method thereof. Provided is a power control apparatus comprising: a rate system information receiving module for receiving rate system information on electric power from an external server; a demand power estimating module for estimating demand power based on the rate system information and calculating demand estimation information; and a power distribution control module for calculating time-based demand power based on the demand estimation information and controlling distribution of the electricity consumption. According to the embodiment, the power control apparatus can reduce pure electricity consumption, overall electricity consumption fares and use of energy by receiving the rate system information such as a time based rate system and a peak rate system, calculating time based or maximum demand power according to the rate system information, controlling operation of a load device and distributing time based consumed power of the load device. [Reference numerals] (120) Rate information providing server; (130) Power measuring device; (140) Load device; (210) Rate information receiving module; (222) Time based demand power calculation unit; (224) Maximum demand power calculation unit; (226) Power distribution control unit; (230) Demand power estimating module

Description

TECHNICAL FIELD The present invention relates to a cost-effective power consumption control apparatus and method,

The present embodiment relates to a cost saving type power consumption control apparatus and a method thereof. More specifically, it receives payment plan information such as a time-based charge plan, a peak charge plan, etc. from the charge plan information providing server, calculates a time period and a maximum demand power according to charge plan information, And more particularly, to a cost-saving power consumption control apparatus and method for controlling operation of a load device to distribute power.

The contents described in this section merely provide background information on the present embodiment and do not constitute the prior art.

As power consumption increases, efficient use of power and reduction of electricity charges are becoming important issues. Particularly, there is a limitation in a method of increasing the production amount of electric energy by increasing the electric energy required to drive a power using device such as a building cooling / heating control device, a water pump control device, and the like. In order to solve these problems, it is necessary to aggressively reduce energy consumption and reduce electric power charges through load management of power-using apparatuses and demand management of power used in power-using apparatuses.

On the other hand, an algorithm for controlling the operation of a power-consuming device is required in order to attain such energy saving and power charge reduction purposes. Research methods related to the development of conventional algorithms include optimization methods of load switching time using evolution algorithms such as Genetic Algorithm and Simulated Annealing, and load using Particle Swarm Optimization There is a method of designing a system optimization model and a method of reducing the energy use cost through a model-based load operation. The results of the above method are excellent, but the calculation time is long and the structure is complicated.

The present embodiment is characterized in that it receives payment plan information such as a time-based charge plan, a peak charge plan, etc. from the charge plan information providing server, calculates a time period and a maximum demand power according to charge plan information, There is provided a cost-effective power consumption control apparatus and method for controlling operation of a load device to distribute power.

According to an aspect of the present invention, there is provided a billing information receiving module for receiving billing information on power from an external server; A demand power prediction module for predicting demand power based on the used power amount and calculating demand forecast information; And a distributed power control module for receiving the charge plan information and the demand forecast information, and calculating a demand power by time based on the charge plan information and the demand forecast information to control the power usage dispersion. Thereby providing a control device.

According to another aspect of the present invention, there is provided a plan information providing server for providing pre-stored plan information on power; A power measuring device for measuring the used electric power and generating and transmitting the used electric energy information; A power consumption control device for calculating demand forecast information based on the power usage information, receiving the plan information from the plan information providing server, and controlling power distribution by time zone according to the demand forecast information and the plan plan information; And a load device that uses power to perform power switching under the control of the power usage control device.

According to another aspect of the present invention, there is provided a billing method comprising: a charge plan information receiving step of receiving charge plan information on an electric power from an external server; A demand power prediction process for predicting demand power based on the amount of power used and calculating demand forecast information; And a distributed power control step of receiving the charge plan information and the demand forecast information, and calculating a demand power for each time period based on the charge plan information and the demand forecast information to control the power usage variance. ≪ / RTI >

According to another aspect of the present invention, there is also provided a method of providing plan information, which provides pre-stored plan information on power; A power measuring step of measuring the used power and generating and transmitting the used power amount information; A power control step of calculating demand forecast information based on the used power amount information, receiving the plan plan information from the plan plan information providing server, and controlling power variance in each time period according to the demand forecast information and the plan plan information; And a load operation step of switching power according to the control of the power usage control device to use electric power.

As described above, according to the present embodiment, it is possible to receive payment plan information such as a time-based charge plan, a peak charge plan, etc. from the charge plan information providing server, calculate the time period and the maximum demand power according to the charge plan information, And the power consumption of the load device is distributed according to the predetermined time period or the power supply mode, thereby reducing the pure power consumption, thereby reducing the overall power usage fee and energy use.

FIG. 1 is a block diagram schematically showing a power control system for reducing power charges according to the present embodiment.
2 is a block diagram schematically showing a power control apparatus according to the present embodiment,
FIG. 3 is an exemplary view for explaining a power control apparatus for controlling heating / cooling of a building according to another embodiment;
FIG. 4 is a graph for explaining the operation of the power control apparatus according to the power rates according to the present embodiment,
5 is a graph for explaining the operation of the demand power prediction module according to the present embodiment,
FIG. 6 is a graph for illustrating the control of the load device using the power control apparatus according to the present embodiment in comparison with the conventional power control,
FIG. 7 is a graph showing a comparison between the distributed electric power control according to the present embodiment and the electric power using general electric power control,
8 is a flowchart for explaining a method of controlling power of a load device by the power control device according to the present embodiment,
9 is a flowchart for explaining a method of power control of a load device in the power control system according to the present embodiment,
10 is a graph for explaining the operation of the power control apparatus for controlling the cooling and heating of a building using the auxiliary battery according to another embodiment,
11 is an exemplary diagram for explaining condition control of a power control apparatus for controlling heating / cooling of a building according to another embodiment.

Hereinafter, the present embodiment will be described in detail with reference to the accompanying drawings. It should be noted that, in adding reference numerals to the constituent elements of the drawings, the same constituent elements are denoted by the same reference symbols as possible even if they are shown in different drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

In describing the components of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected to or connected to the other component, It should be understood that an element may be "connected," "coupled," or "connected."

1 is a block diagram schematically showing a power control system for reducing power charges according to the present embodiment.

As shown in FIG. 1, the power control system according to the present embodiment includes a power control device 110, a charge information providing server 120, and a power measurement device 130. The load device 140 is connected to a power control system.

The power control device 110 receives the charge information on the power usage from the charge information providing server 120 and calculates the demand prediction information based on the received power amount information received from the power measurement device 130. [ In addition, the power control apparatus 110 distributes and controls the power of the load device 140 by time period or amount of usage in order to reduce the electricity bill based on the charge plan information and the demand forecast information.

The power control apparatus 110 according to the present embodiment receives charge plan information from the plan plan information providing server 120. The power control apparatus 110 also calculates demand forecast information on the switching operation of the load device 140 based on the power consumption information received from the power measuring apparatus 130. [

The power control device 110 calculates the demanded power for each time period according to the predetermined time zone based on the above-mentioned charge plan information and demand forecast information. That is, the power control unit 110 calculates a demanded power distributed over each time slot so that a large amount of power is used in a low-time zone and a small amount of power is used in a high- By controlling the switching operation of the load device 140, it is possible to disperse the used electric power and reduce the electric power use charge.

Hereinafter, the above-described process can be expressed by the following equation.

First, the predicted value L _{(t + 1)} obtained by power-controlling the load device 140, which is a multiplex structure, _is expressed by Equation ₍₁₎ .

(L _tr : current room temperature state value, A _rn : temperature change value according to switching control in multiplex structure n, u _tn : operating state of load in multiplex structure n, n: number of multiple structures in load device, During the switching operation of the device,

Further, the predicted value L _{(t + 1)} after power control of the load device 140 having a single structure can be expressed by the following equation (2).

(L _0: the current room temperature state value, I (t): switching the temperature change values of the non-working state, O (t): temperature change of state by a switching operation value, u (t): a load operation state , t is the time of switching operation of the load device, and T is the sum of the switching time of the load device)

In addition, the boundary condition between the upper limit state value for the temperature and the current temperature state value for not exceeding the lower limit state value is as shown in Equation (3).

(L _low : lower limit value of temperature, L _cur : present temperature value, L _high : upper limit value of temperature)

On the other hand, the power usage charge c (t) of the load device with time is expressed by Equation (4).

(B _{cos t} : Seasonal base rate, P _peak : Average power consumption for a predetermined minimum time limit, LL: Light load time zone, HL: Heavy load time zone, MD: Maximum load time zone, P _tl : _Light load time zone usage, P _th : power during heavy load P _pm : Power used during maximum load

On the other hand, the objective function min J for minimizing the power consumption cost according to the time-division power control is expressed by Equation (5).

(T) is the power for operating the load, and c (t) is the power charge.

The charge plan information providing server 120 according to the present embodiment is a device that stores charge plan information on power usage and provides previously stored charge plan information to the power control apparatus 110. [ Here, the plan information includes information on at least one of the various plans, such as a time-based plan, a peak plan, and a real-time plan. A time-based rate system is a rate system that increases the rate of power consumption when there is a large difference in power consumption depending on the season or usage time, and the rate is lowered at a time when power consumption is low. When the amount of power used exceeds a predetermined standard, it refers to a plan that adds a weight to a usage amount exceeding a predetermined standard to charge an additional fee. In addition, a real-time plan is a plan that changes rates in real time according to the law of electricity demand and supply.

The power measuring device 130 measures the power used in the load device 140 by time and power consumption and the power measuring device 130 according to the present embodiment measures the power used in the load device 140 And transmits the measured power measurement information to the power control apparatus 110. [ Here, the power measuring device 130 may store the power usage pattern or the power consumption amount of the load device 140 measured for a predetermined period.

The load device 140 is a device that receives and drives electric power, and generates electrical or mechanical energy to consume electric power.

The load device 140 according to the present embodiment is preferably an indoor temperature control device of the building heating and cooling system and maintains the indoor temperature constant by using the electric power controlled through the switching operation. Here, the load device 140 is described as a single structure device, but it is not limited thereto, and may be implemented as a multi-structure load device including a plurality of loads as needed.

2 is a block diagram schematically showing a power control apparatus according to the present embodiment.

The power control apparatus 110 according to the present embodiment includes a charge information receiving module 210, a distributed power control module 220, and a used power prediction module 230.

The payment plan information receiving module 210 is a module for receiving charge plan information transmitted from the charge plan information providing server 120 to the power control apparatus 110 and transmitting the received plan plan information to the distributed power control module 220. Here, the plan information includes predetermined information for the plan information providing server 120, and information on at least one of the various plan types such as time-based plan, peak plan, and real-time plan.

The distributed power control module 220 is a module for variably controlling the power output through the load device 140. The distributed power control module 220 includes a demand power calculation unit 222, a maximum demand power calculation unit 224, and a power dispersion control unit 226, May be implemented.

The demand power estimating unit 222 according to the embodiment of the present invention receives time schedule fee information from the charge plan information receiving module 210 and receives the demand forecast information from the demand power prediction module 230, Demand power for each time period according to the predetermined time zone based on the fee-based plan information and demand forecast information. Here, the demand power calculator for each time zone 222 uses Equation (4) as a power usage fee required to calculate the demand power for each time period. In addition, the demand power calculation unit 222 uses the equation (5) to calculate the demand power by time for distributing the power. For example, the hourly demand power calculating unit 222 calculates the hourly rate plan information received from the rate information receiving module 210 as 200 won / kWh for the period from 0:00 to 9:00, 300 won / kWh as the period from 9:00 to 11:00 And 11:00 to 12:00 are 500 won / kWh, and when the demand forecast information for the 0 to 12 hour period received from the demand power prediction module 230 is 300 kW, , The demand power is calculated by using 80 kW in the period from 9 to 11 o'clock, and 20 kW in the period from 11 to 12 o'clock. In this manner, the demand power calculator 222 for each time zone uses a large amount of electric power in a time period with a low charge rate and a small amount of electric power in a time period with a high charge rate, And calculates demand power.

The maximum demand power calculating unit 224 receives the peak charge information from the charge information receiving module 210 and calculates the maximum demand power based on the peak charge information.

The maximum demand power calculating unit 224 calculates the maximum demand power based on the demand forecast information and the peak charge information received from the demand power prediction module 230, But it is not necessarily limited to this. When calculating the demanded power distributed by time in the demanded power calculation unit 222 by time, according to the time and the peak charge plan including the maximum demanded power, The optimal distributed demand electric power can be calculated through Equation (5).

The power distribution control unit 226 controls the power used by the load device 140 according to the demand power for each time period calculated from the demand power calculation unit 222 and the maximum demand power calculated by the maximum demand power calculation unit 224 And controls the operation of the load device 140 to disperse it.

The power distribution control unit 226 according to the present embodiment operates the load device 140 at a time when the electric power charge is low based on the demand electric power and the maximum demand electric power by the time period, Block or minimize operation. For example, when the load device 140 is an indoor temperature control device, the power distribution control unit 226 changes the switch included in the room temperature control device to an ON state at a time when the electric power charge is low, , It is possible to change the switch of the room temperature control device to the OFF state or to operate the ON state only for a short time to disperse the power consumption by the time zone.

The demand power prediction module 230 is a module for receiving the power consumption information from the power measurement device 130 and estimating the demanded power of the load device 140.

The demand power prediction module 230 predicts the switching operation of the load device 140 in the heavy load time zone or the maximum load time zone based on the electric power consumption information measured in the load device 140. [ Meanwhile, the demanded power prediction module 230 may predict the demanded power of the optimization period by using an LP (Linear Prediction) algorithm to predict the demanded power. The LP algorithm is a calculation method for optimizing a plurality of operations related to each other using a linear function. For example, it is an algorithm that can be used in fields requiring dispersion or distribution such as optimal personnel placement, transportation problems, and the like. Here, the linear function may be an objective function of Equation (5).

 The predicted value calculated when controlling the switching operation of the load device 140 having a multiple structure according to the demanded power demanded by the demanded power prediction module 230 uses Equation (1). On the other hand, in the case of controlling the load device 140 having a single structure, Equation (2) which is extended from Equation (1) can be used. The details of the predictive demand power control of the optimization period will be described with reference to the graph shown in FIG.

3 is an exemplary diagram illustrating a power control apparatus according to another embodiment.

In FIG. 3, the power control device 110 is assumed to be a device for controlling power used for cooling / heating operation in a building or a building.

The power control apparatus 110 according to another embodiment includes an operation mode selection unit 320, a power selection unit 330, a condition control unit 340, a horizontal control setting unit 342, A vertical control setting unit 344, and a switching operation unit 350.

The operation mode selection unit 320 selects at least one of the cooling mode and the heating mode according to the input signal through the operation of the administrator. Here, the cooling mode is a mode for reducing the temperature of the building, and the heating mode is a mode for increasing the temperature of the building. Here, the operation mode selection unit 320 includes only two modes, i.e., a cooling mode and a heating mode. However, the present invention is not limited thereto. For example, the operation mode selection unit 320 may include an operation mode Any mode may be included.

The power source selection unit 330 performs an operation of selecting a power source mode for operating cooling and heating of the building. Here, the power source selection unit 330 may select at least one of a commercial power mode and a battery power mode. Here, the commercial power system means a method of using power supplied from a power plant for building cooling and heating control, and the battery power system means a method of providing a charged power by using a commercial power or a renewable energy to a building cooling and heating control .

The condition control unit 340 performs an operation of setting a condition for variably controlling the power output through the load device 140. [ Here, the condition control unit 340 includes a horizontal control setting unit 342 and a vertical control setting unit 344.

The horizontal control setting unit 342 determines a horizontal control setting value for controlling the operation time period of the load device 140. [ For example, the horizontal control setting unit 342 operates the heating / cooling apparatus of the building to the maximum for 10 minutes on the basis of 15 minutes, stops the building heating / cooling apparatus for the remaining 5 minutes, It means to set the horizontal control set value so as not to exceed the standard.

The vertical control setting unit 344 determines a vertical control setting value for controlling the usage power of the load device 140 using the battery when the battery power mode is selected in the power selection unit 330. [ For example, the vertical control setting unit 344 operates the cooling / heating unit of the building for the first 5 minutes based on 15 minutes using both the commercial power supply system and the battery power supply system. In the second 5 minutes, the commercial power supply system And the commercial power supply system and the battery power supply system are used again for the third 5 minutes to set the vertical control setup value so that the commercial power used for the total of 15 minutes does not exceed the predetermined standard according to the peak charge information .

The switching control module 350 includes a switching power supply unit 352, a demand power prediction unit 354, a switching control unit 356 and a switching operation unit 358. Here, the switching control module 350 performs an operation for distributing power used in the same load device 140 as the distributed power control module 220 shown in FIG. Here, the demand power estimating unit 354 performs the same operation as the demand power calculating unit 222 for the time period, and the switching control unit 356 and the switching operation unit 350 perform the same operation as the power distribution control unit 226 do. The switching control unit 356 controls ON / OFF switching operation of the switching operation unit 358 based on the horizontal control setting value or the vertical control setting value set by the condition control unit 340. On the other hand, the switching power supply unit 352 is preferably a separate power supply for operating the ON / OFF switch, but the ON / OFF switch may be operated by using the commercial power or the battery power.

The switching operation unit 358 operates in the '1' state in which the load device 140 uses the electric power by operating the switch in the ON state and the '0' in which the switch is in the OFF state to stop the use of electric power . For example, when the power to be applied to the load device 140 is 3 kW, if the input of the switching operation part 358 is '1', the power used by the load device 140 is 3 kW and the switching operation part 358 ) Is '0.8', the power used by the load device 140 may be 2.4 kW.

FIG. 4 is a graph for explaining the operation of the power control apparatus for cooling and heating the building according to the power rates according to the present embodiment.

The graph shown in FIG. 4 shows the power control for heating and cooling the building according to the power rates according to the time zones described in the block diagrams of FIGS. For example, the season is summer, the S1 period of 0 to 9 hours is the light load period, the S2 period of 9 to 11 hours is the heavy load time period, the S3 period of 11 to 12 hours is the maximum load time period, The indoor temperature is increased to the maximum temperature included in the predetermined reference by operating the temperature control device as much as possible, and in the period S2 and the period S3, the room temperature control device is reduced to a predetermined ratio So that the room temperature can be increased to reduce the electric power charge or reduce the pure water consumption. Here, the used electric power charge can be calculated using Equation (4).

5 is a graph for explaining the operation of the demand power prediction module according to the present embodiment.

The graph shown in FIG. 5 shows an operation of predicting the demanded electric power of the room temperature control apparatus using the demanded power prediction module 230. FIG.

The demanded power prediction module 230 according to the present embodiment predicts the switching operation of the room temperature control device in the heavy load time zone or the maximum load time zone based on the power consumption information measured by the indoor temperature control device. Meanwhile, the demand power prediction module 230 can predict the demand power of the optimization period using the LP algorithm to predict the demand power.

As shown in FIG. 5, the demand power prediction module 230 calculates the demand power Pm based on the operation of the indoor temperature control device recorded in the sections a to b, The operation can be predicted and controlled, and the resultant value (temperature) according to the switching operation of the room temperature control device can be calculated.

6 is a graph for illustrating the control of the load device using the power control device according to the present embodiment in comparison with the conventional power control.

The top two graphs shown in FIG. 6 are graphs showing the operation state of the conventional indoor temperature control device and the temperature change of the building according to the operation of the indoor temperature control device. When the indoor temperature is the lowest temperature, If the room temperature is the maximum temperature, the room temperature control device is stopped to reduce the room temperature. Such operation of the indoor temperature control device does not consider the time period and the seasonal charge, and operates the room temperature control device even at a time corresponding to an expensive charge.

The lower two graphs shown in FIG. 6 are graphs showing the operation state of the indoor temperature control device and the temperature change of the building according to the operation of the indoor temperature control device according to the present embodiment. When the electricity rate of the E time zone is low and the electric power rate of the time zone after the E time zone is high, the operation of the room temperature control device continuously increases from D to E to the maximum temperature of the building, The operation of the temperature control device can be minimized and the electric power charge used in the operation of the room temperature control device can be minimized compared with the conventional operation method of the indoor temperature control device at the upper part.

FIG. 7 is a graph for comparing the amount of power using the distributed power control according to the present embodiment and the general power control.

7 is a graph showing a comparison of power consumption according to the conventional operation of the indoor temperature controller and power consumption according to the operation of the indoor temperature controller of the present embodiment.

In the graph of the power consumption according to the operation of the conventional indoor temperature control device at the upper part, the room temperature of the building is the lowest temperature in the section A ', and the room temperature control device operates to control the room temperature control When the device is continuously operated, the maximum power consumption of 300 kWh, which is the predetermined usage ratio 1, is used for the first hour. This operation also works in the B 'interval.

However, in the graph of power consumption according to the operation of the room temperature control device in the lower stage of this embodiment, power is dispersed and used in order to change the room temperature of the building from the lowest temperature to the maximum temperature within the interval C ' In the remaining section, the use ratio is less than 1 because the room temperature control device operates by minimizing the power consumption. For example, the total power consumption per day according to the graphs of the two power amounts is 4.2 x 300 kWh and 3.287 x 300 kWh, respectively, and the power control method according to the present embodiment reduces the total used power and decreases the maximum used power Can be confirmed.

8 is a flowchart for explaining a method of controlling the load device by the power control device according to the present embodiment.

The power control apparatus 110 receives the charge plan information on the electric power from the charge plan information providing server 120 (S1010).

The power control apparatus 110 predicts the demanded power based on the usage amount information received from the power measurement apparatus 130 and calculates demand forecast information (S1020).

The power control apparatus 110 calculates the demand power and the maximum demand power for each time period according to a predetermined time period based on the charge plan information received in step S1010 and the demand forecast information calculated in step S1020 (S1030 and S1040). Here, the power control apparatus 110 distributes and controls the switch operation of the load device 140 according to the time demand power and the maximum demand power (S1050).

Although it is described in FIG. 8 that steps S1010 to S1050 are sequentially executed, it is only described as an example of the technical idea of the present embodiment. If a person skilled in the art is familiar with the present invention, It is to be understood that various changes and modifications may be made to the invention without departing from the essential characteristics thereof, and it is to be understood that the invention is not limited to the above-described embodiments, But is not limited thereto.

9 is a flowchart for explaining a method of power control of a load device in the power control system according to the present embodiment.

The charge information providing server 120 provides the pre-stored charge information for the electric power to the power control device 110 (S310).

The power measuring apparatus 130 measures the used power, generates the used power amount information, and transmits it to the power control apparatus 110 (S920).

Calculates demand forecast information based on the used power amount information generated from the power measuring apparatus 130, receives the plan plan information from the plan plan information providing server 120, and controls the power variance for each time period according to the demand forecast information and the plan plan information (S930). Here, the power measuring apparatus 130 may select at least one of a commercial power system and a battery power system in order to distribute power consumption. The power measuring apparatus 130 may further include a horizontal control setting value for controlling the operation time of the load device 140 or a vertical control setting value for controlling the use power of the load device 140 using the battery, .

 The load device 140 performs switching operation under the control of the power control device 110 to use power (S940).

9, it is described that steps S910 to S940 are sequentially executed. However, this is merely an example of the technical idea of the present embodiment, and it is obvious to those skilled in the art that the present embodiment It is to be understood that various changes and modifications may be made to the invention without departing from the essential characteristics thereof as long as it is possible to carry out the modification of the order described in FIG. 9 or to execute one or more of steps S910 to S940 in parallel, But is not limited thereto.

10 is a graph for explaining the operation of a power control apparatus for controlling heating / cooling of a building using the auxiliary battery according to another embodiment.

As shown in FIG. 10, section A shows the power used to reduce the temperature of the building, and section B shows the power used to decrease the temperature of the building.

In a section A, for example, when a commercial power source used for performing building cooling control is represented by a straight line 1 1102, the power control unit 110 generates a straight line 2 1104 using the battery according to vertical control using battery power, As shown in FIG.

In a section B, for example, when a commercial power source used for performing cooling / heating control of a building is represented by a straight line 3 1106, the power control unit 110 generates a straight line 4 1108 using the battery according to vertical control using battery power, As shown in FIG.

11 is an exemplary diagram for explaining condition control of a power control apparatus for controlling heating / cooling of a building according to another embodiment.

11 is a graph (a) of a horizontal control setting value for controlling the operating time of the load device 140 and a vertical control setting value (B) of FIG.

(a) shows that the power control apparatus 110 performs ON / OFF switching control of the load device 140 operating using a commercial power supply to distribute the power so as to use the power constantly within a predetermined reference time. For example, power may be used for 10 minutes based on 15 minutes and average power usage may be decreased by stopping power use for 120 minutes during the remaining 5 minutes. Also, power may be used for three minutes on a 15 minute basis and average power usage may be reduced using the lowest power for 120 minutes (1204).

(b) shows that the power control apparatus 110 distributes the power to the load device 140 operated using the commercial power source by using the battery power mode. For example, using 8 kW (1208) using the commercial power of 10 kW used in the load device 140 on the basis of 15 minutes in the heavy load period and using the remaining 2 kW as the power charged in the battery, The amount of usage can be reduced. Also, since 5 kW (1210) is used as a power source of the 10 kW used in the load device 140 based on 15 minutes in the maximum load time zone and the remaining 5 kW is used as a power source charged in the battery, The amount of usage can be reduced.

On the other hand, the power control unit 110 can control the power by combining (a) and (b) and applying the vertical control or the horizontal control according to the situation so that the power distribution control can be performed even if the power demand prediction can not be performed have.

The foregoing description is merely illustrative of the technical idea of the present embodiment, and various modifications and changes may be made to those skilled in the art without departing from the essential characteristics of the embodiments. Therefore, the present embodiments are to be construed as illustrative rather than restrictive, and the scope of the technical idea of the present embodiment is not limited by these embodiments. The scope of protection of the present embodiment should be construed according to the following claims, and all technical ideas within the scope of equivalents thereof should be construed as being included in the scope of the present invention.

110: power control device 120: charge plan information providing server
130: Power measuring device 140: Load device
210: Rate information receiving module 220: Distributed power control module
222: Time demand power calculating unit 224: Maximum demand power calculating unit
226: power distribution control unit 230: demand power prediction module

Claims (16)

A charge plan information receiving module for receiving charge plan information on power from an external server;
A demand power prediction module for predicting demand power and calculating demand forecast information based on the used power amount of the load device; And
A distributed power control module that receives the charge plan information and the demand forecast information, calculates a demand power by time based on the charge plan information and the demand forecast information, and controls distribution of power usage of the load device
Power usage control device comprising a. 3. The method of claim 2,
The distributed power control module includes:
A demand power calculation unit for calculating a demand power for each time period according to a predetermined time zone based on the charge plan information and the demand forecast information;
A maximum demand power calculation unit for calculating a maximum demand power according to a predetermined reference power based on the charge plan information and the demand forecast information; And
A power distribution controller for controlling the operation of the load device in accordance with the demand power for each time period calculated from the demand power calculation unit for each time period and the maximum demand power calculated from the maximum demand power calculation unit,
And a control unit for controlling the power consumption of the vehicle. The method of claim 1,
The power consumption control device includes:
Further comprising a power selection unit for selecting at least one of a commercial power mode and a battery power mode to provide power of the load device. The method of claim 1,
The power consumption control device includes:
Further comprising a condition control unit for determining a horizontal control set value for controlling the operation time of the load device or a vertical control set value for controlling the use power of the load device using the battery. 3. The method of claim 2,
The demand power calculator according to claim 1,
In order to calculate the demand power by time period, an objective function (min J)

(T) is the power for operating the load, and c (t) is the power charge.
Wherein the power consumption control unit applies the following expression to the power consumption control unit. The method of claim 5, wherein
The demand power calculator according to claim 1,
In order to calculate the demand power for each time period, the power usage charge c (t)

(B _{cos t} : Seasonal base rate, P _peak : Average power consumption for a predetermined minimum time limit, LL: Light load time zone, HL: Heavy load time zone, MD: Maximum load time zone, P _tl : _Light load time zone usage, P _th : power during heavy load P _pm : Power used during maximum load
Wherein the power consumption control unit applies the following expression to the power consumption control unit. The method of claim 1,
Wherein the demand power prediction module comprises:
In order to calculate the demand forecast information, a predicted value L _{(t + 1)}

(L _tr : current state value, A _rn : change value according to switching control in multiplex structure n, u _tn : operating state of load in multiplex structure n, n: number of multiple structures, t: )
Wherein the power consumption control unit applies the following expression to the power consumption control unit. The method of claim 1,
The above-
A peak rate plan, and a real-time rate plan. 3. The method of claim 2,
Wherein the power dispersion control unit comprises:
And receives demand power for each time period corresponding to at least one of the light load time period, the heavy load time period, and the maximum load time period from the demand power calculation unit for each time period. 3. The method of claim 2,
Wherein the maximum demanded power calculating unit calculates,
Wherein the maximum demand power is calculated to control the load device to operate in a distributed manner. A plan information providing server for providing pre-stored plan information on power;
A power measuring device for measuring the used electric power and generating and transmitting the used electric energy information;
A power consumption control device for calculating demand forecast information based on the power usage information, receiving the plan information from the plan information providing server, and controlling power distribution by time zone according to the demand forecast information and the plan plan information; And
A load device for switching power according to the control of the power consumption control device,
Power usage control system comprising a. The method of claim 11,
The load device includes:
And a building cooling and heating control device for increasing or decreasing a temperature of the building to maintain a predetermined temperature range. A power consumption control method for distributing power to a load device,
A charge plan information receiving step of receiving charge plan information on power from an external server;
A demand power prediction process for predicting demand power based on the amount of power used and calculating demand forecast information; And
A distributed power control process for receiving the charge plan information and the demand forecast information, calculating a demand power by time based on the charge plan information and the demand forecast information,
Power usage control method comprising a. The method of claim 13,
The distributed power control process includes:
And a power mode selection step of selecting at least one of a commercial power mode and a battery power mode to distribute the power usage. The method of claim 13,
The distributed power control process includes:
And a condition control setting step of determining a vertical control setting value for controlling the operation time of the load device or a vertical control setting value for controlling the use power of the load device by using the battery. A power consumption control method for distributing power to a load device,
A plan information providing process for providing pre-stored plan information on power;
A power measuring step of measuring the used power and generating and transmitting the used power amount information;
A power control process of calculating demand prediction information based on the amount of power usage information, receiving the plan information from the plan information providing server, and controlling power distribution for each time zone according to the demand forecast information and the plan information; And
Load operation process using power by switching operation under control of the power usage controller
Power usage control method comprising a.

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