KR101900609B1 - Demand Response Management Server and Demand Response Management System Including That Server - Google Patents

Abstract

According to an aspect of the present invention, a power demand management server capable of predicting a power reduction during a predetermined time interval for each load comprises: a target power reduction calculation unit for calculating a target power reduction for each customer load by distributing the total power reduction that the customer loads should reduce; and an expected power reduction calculation unit for calculating an expected power reduction during a target time slot based on a first cumulative power usage at a first point which is a start point of the target time slot including a current point among a plurality of time slots for each customer load and a second cumulative power usage at a second point which is the current point. The target power reduction calculation unit adjusts a target power reduction of each customer load according to a comparison result between the target power reduction and the expected power reduction calculated for each customer load.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a power demand management server and a power demand management system including the same.

The present invention relates to power management, and more specifically to power demand management.

Recently, large-scale power outages are occurring frequently due to rapid increase in energy demand. Large-scale power outages are caused by imbalances in energy supply and demand, and can be largely solved by preventing power peaking, where energy demand is concentrated at a certain point in time.

In order to prevent the power peak phenomenon, a power demand management system capable of managing the power demand of the load according to a predetermined load reduction target has been proposed. FIG. 1 shows a configuration of an existing power demand management system.

As shown in FIG. 1, the power demand management system 100 receives the power usage amount of each individual load through the metering infrastructure 110 of the power generation company. When the power reduction order is received from the power exchange server 120, The power consumption of the load is limited according to the power reduction instruction based on the power consumption received through the infrastructure 110. [

The power demand management system 100 according to the related art as described above can calculate only the power reduction amount up to the present time based on the power consumption amount up to the current time point of each individual load, It is not possible to actively perform power demand management.

In addition, in the conventional technology as described above, the metering infrastructure 110 of the power generation company collects the power consumption of the individual load from the server of the local network that manages the load, And transmits it to the electric power demand management system 100. [ Accordingly, the power demand management system 100 according to the related art can not perform the power demand management based on the real-time power consumption of each load since it takes more than one hour to receive the power consumption of each individual load There is also a problem.

Further, in the case of a load in which a plurality of meters are installed in order to measure power consumption in the related art, a separate transmission device for transmitting the power consumption measured by the corresponding meter to each regional meter is required for each meter, There is a problem that not only the infrastructure cost to be invested increases but also there is a difficulty in maintenance such as maintenance.

Korean Patent Laid-Open No. 10-2014-0128513 (Title of the Invention: Power Demand Management Method and System, Release Date: November 06, 2014)

SUMMARY OF THE INVENTION The present invention is directed to a power demand management server capable of predicting a power reduction amount for a predetermined time period for each load and a power demand management system including the power demand management server .

Another object of the present invention is to provide a power demand management server and a power demand management system including the power demand management server that can monitor power consumption of each load in real time.

It is another object of the present invention to provide a power demand management server capable of collecting and collecting power usage calculated based on metering information of a plurality of meters and a power demand management system including the same.

It is another object of the present invention to provide a power demand management server and a power demand management system including the power demand management server capable of collecting and receiving power consumption obtained from different kinds of meters.

It is another object of the present invention to provide a power demand management server and a power demand management system including the power demand management server that can prevent the power consumption obtained from each load from being leaked to the outside through hacking.

According to an aspect of the present invention, there is provided a power demand management server comprising: a target power reduction amount calculation unit for calculating a target power reduction amount for each customer load by distributing a total power reduction amount to be reduced by customer loads; A first cumulative power usage amount at a first time point, which is a start time point of a target time slot including a current time point among a plurality of time slots for each customer load, and a second cumulative power usage amount at a second time point, And a target power reduction amount calculating unit for calculating a target power reduction amount during the target time slot based on the comparison result between the target power reduction amount and the estimated power reduction amount calculated for each customer load And the target power reduction amount of each customer load is adjusted according to the target power reduction amount.

According to another aspect of the present invention, there is provided a power demand management system including at least one information collecting device for acquiring a power usage amount of each customer load; And distributing a total power reduction amount to be borne by the total customer load to calculate a target power reduction amount to be borne by each of the customer loads, And a power demand management server for calculating a power reduction amount, wherein the at least one information collecting device acquires the power usage amount of each customer load from two or more heterogeneous meters.

According to the present invention, based on the cumulative power usage at the first time point, which is the current time point of each load, and the cumulative power usage amount at the second time point before the first time point, from the second time point to the third time point after the first time point The expected power reduction amount can be calculated by predicting the power reduction amount, so that the power demand management can be actively performed.

According to the present invention, the expected power reduction amount of each load is provided to the customers corresponding to the respective loads together with the target power reduction amount, thereby enhancing the customer's will to participate in the power demand management.

Further, according to the present invention, the power usage pattern of each load and the target power consumption of each load are calculated based on the power consumption of each load, and the calculated load usage is provided to the customer of the load, thereby maximizing the customer's will to participate in the power demand management Can be effective.

According to the present invention, the power consumption of each load can be obtained in real time by directly calculating the power consumption of each load through an information collecting device linked to the meter of the power generation company without passing through the metering infrastructure of the power generation company, Management can be performed in real time, thereby improving the accuracy and reliability of the electric power demand management system.

In addition, according to the present invention, since one information collecting device is connected to a plurality of meters to integrate power consumption calculated based on the metering information measured by a plurality of meters, a configuration for transmitting power consumption per meter It is possible to reduce the investment cost of the infrastructure as well as reduce the maintenance cost.

In addition, according to the present invention, since one information collecting device can be connected to different kinds of meters, the power consumption of each load can be collected regardless of the kinds of meters installed in the field.

In addition, according to the present invention, the power demand management server authenticates the information collecting device and issues an encryption key to the authenticated information collecting device, and the information collecting device encrypts the electric power consumption with the encryption key, It is possible to prevent the hacking and the outflow of data from being attempted beforehand.

1 is a diagram showing a configuration of a general power demand management system.
2 is a block diagram schematically illustrating a configuration of a power demand management system according to an embodiment of the present invention.
3 is a block diagram illustrating a configuration of a power demand management server according to an embodiment of the present invention.
4 is a diagram for explaining a method of calculating a predicted power reduction amount by a predicted power reduction amount calculation unit according to an embodiment of the present invention.
5 is a diagram illustrating a power usage pattern provided by a power demand management server according to an embodiment of the present invention.
6 is a block diagram schematically showing the configuration of an information collecting apparatus according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The meaning of the terms described herein should be understood as follows.

The word " first, "" second," and the like, used to distinguish one element from another, are to be understood to include plural representations unless the context clearly dictates otherwise. The scope of the right should not be limited by these terms.

It should be understood that the terms "comprises" or "having" does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

It should be understood that the term "at least one" includes all possible combinations from one or more related items. For example, the meaning of "at least one of the first item, the second item and the third item" means not only the first item, the second item or the third item, but also the second item and the second item among the first item, Means any combination of items that can be presented from more than one.

2 is a diagram illustrating a configuration of a power demand management system according to an embodiment of the present invention. 2, the power demand management system 200 according to an exemplary embodiment of the present invention includes a power demand management server 210 and one or more information collecting apparatuses 220. As shown in FIG.

The power demand management server 210 receives the power reduction instruction from the power exchange server 300 and determines the load 400 of the customers who subscribe to the power demand management service of the power demand management server 200 according to the power reduction instruction, Quot; customer load ") of the customer load 400 is reduced.

In particular, the power demand management server 210 according to the present invention calculates the target power reduction amount and the estimated power reduction amount for each customer load 400 according to the power reduction instruction, and calculates the target power reduction amount and the estimated power reduction amount To each customer through the customer terminal 500 so that each customer can adjust the power consumption of the customer load 400 and reduce the amount of power corresponding to the target power reduction amount.

One or more information collecting devices 220 collect the power usage of each customer load 400 and transmit the collected power usage to the power demand management server 210. In one embodiment, the information collecting device 220 is installed for each customer load 400 and is connected to the meters 410 for measuring the power usage of each customer load 400, And calculates the power consumption of each customer load 400 based on the received meter reading information.

Hereinafter, the power demand management server 210 and the information collecting apparatus 220 according to the present invention will be described in more detail with reference to FIG. 3 to FIG.

3 is a block diagram schematically illustrating a configuration of a power demand management server according to an embodiment of the present invention. 3, the power demand management server 210 according to an embodiment of the present invention includes a first interface unit 310, a target power reduction amount calculation unit 320, a predicted power reduction amount calculation unit 330 A power usage monitoring unit 340, a settlement unit 350, an information providing unit 360, and a database 370.

The first interface unit 310 receives a power reduction instruction from the power exchange server 300. The power reduction instruction received by the first interface unit 310 includes the total power reduction amount to be reduced in the customer loads 400 managed by the power demand management server 210. [ The first interface unit 310 transmits the received power reduction instruction to the target power reduction amount calculation unit 320.

The first interface unit 310 receives the power usage of each customer load 400 from one or more information collecting devices 220. The power consumption of each customer load 400 received through the first interface unit 310 may be determined based on the instantaneous power consumption of each customer load 400 at the current point of time and the instantaneous power consumption of each customer load 400 And a cumulative power usage of the plurality of devices. The first interface unit 310 transmits the received power consumption to the estimated power reduction amount calculating unit 330 and the power consumption monitoring unit 340.

In the above-described embodiment, the first interface unit 310 has been described as receiving power consumption of each customer load 400 from one or more information collecting apparatuses 220. However, the first interface unit 310 is not limited to this and may receive the power usage of each customer load 400 directly from the metering infrastructure (not shown) of the power generation company. According to this embodiment, the first interface unit 310 can acquire a power usage amount (e.g., i-Smart data) by using an OPEN API that can access the power generation company's metering infrastructure.

The target power reduction amount calculating unit 320 calculates a target power reduction amount for each customer load 400. [ The target power reduction amount calculation unit 320 can calculate the target power reduction amount for each customer load 400 by distributing the total power reduction amount included in the power reduction instruction.

In one embodiment, the target power reduction amount calculating unit 320 calculates the share ratio between each customer load 400 according to the contract power reduction amount set for each customer load 400, The power reduction amount corresponding to the sharing ratio can be calculated as the target power reduction amount of each customer load 400. [ Here, the contracted target power reduction amount means a power reduction amount that each customer has agreed to reduce when power reduction is required. The contract target power reduction amount set for each customer is recorded in the database 370.

On the other hand, the target power reduction amount calculation unit 320 calculates the target power reduction amount by the estimated power reduction amount calculation unit 330 based on the comparison result between the estimated power reduction amount for each customer load 400 calculated by the estimated power reduction amount calculation unit 330 and the target power reduction amount calculated for each customer load , The target power reduction amount of each customer load is adjusted.

In one embodiment, the target power reduction amount calculating unit 320 calculates the target power reduction amount by using the estimated power reduction amount calculated by the estimated power reduction amount calculating unit 330, The target power reduction amount for each customer load can be adjusted according to the share ratio between the respective customer loads 400.

In another embodiment, when the sum of the estimated power reduction amounts for each customer load 400 calculated by the estimated power reduction amount calculation unit 330 is greater than the total power reduction amount , The target power reduction amount of each customer load can be adjusted by setting the target power reduction amount of each customer load sequentially from the order of increasing the estimated power reduction amount of each customer load 400 to the estimated power reduction amount of each customer.

At this time, the target power reduction amount calculating unit 320 adjusts the target power reduction amount of each customer load 400 until the sum of the adjusted target power reduction amounts of the respective customer loads 400 becomes the total power reduction amount or more And the target power reduction amount of each remaining customer load 400 can be adjusted to 0 when the sum of the adjusted target power reduction amounts is equal to or more than the total reduction amount.

In another embodiment, the target power reduction amount calculating unit 320 may calculate the target power reduction amount based on the sum of the estimated power reduction amounts for each customer load 400 calculated by the estimated power reduction amount calculating unit 330, The target power reduction amount for each customer load 400 can be adjusted to a value obtained by subtracting the average expected power reduction amount from the calculated target power reduction amount after calculating the target power reduction amount for each customer load 400 . At this time, the average expected power reduction amount can be calculated by subtracting the total power reduction amount from the sum of the estimated power reduction amounts for each customer load (400), and dividing the total power reduction amount by the total number of customer loads.

The target power reduction amount calculating unit 320 delivers the calculated target power reduction amount to the estimated power reduction amount calculating unit 330 and the information providing unit 360.

The estimated power reduction amount calculating unit 330 calculates a predicted power reduction amount for each customer load 400 based on the power consumption of the customer loads 400 received through the first interface unit 310. [ In the present invention, the estimated power reduction amount of each customer load 400 is calculated through the estimated power reduction amount calculation unit 330 by providing the target power reduction amount and the estimated power reduction amount to each customer, The actual power reduction amount of each customer load 400 can follow the target power reduction amount by controlling the power consumption amount of each customer load 400 while monitoring the estimated power reduction amount.

The estimated power reduction amount calculating unit 330 calculates a first accumulated power consumption amount at a first time point, which is a start time point of a target time slot including a current time point among a plurality of time slots, for each customer load 400, The estimated power reduction amount during the target time slot can be calculated based on the second cumulative power usage amount at the second time point. Here, the plurality of time slots are configured in 24 units in one unit, and the interval size of each time slot may be set to 60 minutes.

In one embodiment, the estimated power reduction amount calculating unit 330 may calculate the estimated power reduction amount of each customer load 400 using the following equation (1).

In Equation 1, G (TSn) represents a predicted power reduction amount during a target time slot TSn, Y (t1) represents the first accumulated power use amount, and Y (t2) T1 denotes a time value of a first time point in the target time slot TSn, t2 denotes a time value of the second time point in the target time slot TSn, P denotes a time value of the target time slot TSn TSn).

In one embodiment, the interval size P of each time slot TS may be set to 60 minutes. According to this embodiment, the estimated power reduction amount calculating unit 330 calculates the estimated power reduction amount during the target time slot TSn of 60 minutes in which the current time is included based on the accumulated power consumption at the current time .

For example, as shown in FIG. 4, the second cumulative power consumption at the second time t2, which is the current time, is 280 kW, and the second cumulative power consumption is 280 kw. The first accumulated power consumption at the time t1 is 200 kw and the time value of the first time point t1 is 0 and the second time point t2 is within the target time slot TSn within the target time slot TSn, The estimated power reduction amount calculating unit 330 can calculate 343 kw as the estimated power reduction amount during the target time slot TSn using Equation (1).

On the other hand, the estimated power reduction amount calculating unit 330 receives the target power reduction amount of each customer load 400 from the target power reduction amount calculating unit 320, and calculates a target power reduction amount The estimated reduction performance of each customer load 400 can be further calculated based on the estimated power reduction amount of the customer load 400. [

In one embodiment, the expected power reduction amount calculating unit 330 may calculate the expected reduction performance using the following equation (2).

G (TS) represents the expected amount of power reduction during the target time slot (TSn), T represents the target power of the load (400), and R represents the expected power reduction during the target time slot Represents the reduction amount.

The estimated power reduction amount calculation unit 330 transmits the calculated estimated power reduction amount and the estimated reduction results to each customer terminal 500 through the information providing unit 360.

In the above-described embodiment, the estimated power reduction amount calculating unit 330 calculates the estimated power reduction amount and the estimated reduction performance during the target time slot TSn including the future time point based on the current time point. However, the estimated power reduction amount calculating unit 330 according to the present invention may calculate the actual power reduction amount and the actual reduction performance during the past time slot. At this time, the actual power reduction amount is calculated by subtracting the accumulated usage amount at the start time point of the past time slot from the accumulated usage amount at the end time point of the past time slot. Actual reduction performance can be calculated by expressing the actual power reduction amount divided by the target power reduction amount as a percentage.

The power consumption monitoring unit 340 monitors the power consumption of each customer load 400 based on the power consumption of each customer load 400 received through the first interface unit 310 and controls the power consumption of each customer load 400, Thereby generating a pattern of power consumption of the battery. The power consumption monitoring unit 340 transmits the generated power consumption pattern to the customer terminal 500 through the information providing unit 360.

5, the power consumption monitoring unit 340 monitors the amount of power consumption of the customer load 400 for the entire customer load 400 and the amount of power consumption of the load 400 for each customer load 400 Power usage patterns can be generated in a graph-by-pattern comparison.

The settlement unit 350 calculates a settlement amount to be paid to each customer based on the actual power reduction amount for each customer. In one embodiment, the settlement unit 350 may calculate a settlement amount to be paid to each customer by summing the base money according to the contract power reduction amount of each customer and the performance money according to the actual power reduction amount of each customer. The settlement unit 350 provides the calculated settlement amount to the customer through each customer terminal 500.

The information providing unit 360 performs an interface function between the customer terminal 500 and the power demand management server 210. In one embodiment, the information providing unit 360 calculates the target amount of power reduction for each customer load 400 calculated by the target amount of power reduction calculating unit 320, the estimated power reduction amount calculating unit 330, Estimated power reduction amounts and estimated reduction results of the respective customer loads 400, the power consumption patterns of the respective customer loads 400 calculated by the power consumption monitoring unit 340, and the calculated settlement amount calculated by the settlement unit 350 And the amount of money to each customer terminal 500.

As described above, the present invention provides the target power reduction amount and the estimated power reduction amount for each customer load 400 to each customer through the information providing unit 360, so that the actual power reduction amount of each customer load 400 becomes the target Each customer can adjust the power consumption of each customer load 400 so as to follow the power reduction amount, so that the power demand management can be more actively performed, and the power consumption reduction consciousness of each customer can be inspected do.

In addition, since the present invention provides a power consumption pattern to each customer through the information providing unit 360, each customer can compare and analyze the power consumption of the entire customer load 400 and the power consumption of the same day, To maximize power consumption reduction consciousness.

The database 370 stores various information for performing the power demand management service. For example, in the database 370, customer information of the customer who subscribes to the power demand management service of the power demand management server 210 and contract power reduction amount set for each customer's customer load 400 are recorded. In the database 370, the identification information of the information collection device 220 installed in each customer load 400 is stored in a matching manner with the customer information. In addition, the database 370 stores and stores the collected power consumption, target power reduction amount, estimated power reduction amount, and estimated reduction performance for each customer load 400 with the information of each customer load 400.

In the above-described embodiment, the target power reduction amount calculating unit 320 calculates the target power reduction amount of each customer load 400 in order to induce the power consumption reduction. However, in the modified embodiment, the target power reduction amount calculating unit 320 further calculates the target power consumption of each customer load 400 and provides the calculated target power consumption to each customer, It can be induced not to exceed the power consumption. Here, the target power consumption amount means the maximum power consumption amount that each customer load 400 can use.

In one embodiment, the target power reduction amount calculating unit 320 calculates a value obtained by subtracting the contracted power reduction amount of each customer load 400 from the reference power usage amount calculated for each customer load 400, ) Of the target power consumption of the battery. At this time, the reference power consumption calculated for each customer load 400 may be determined as the average power consumption of each customer load 400 during the past predetermined period.

As described above, in the present invention according to the present invention, by providing each customer with the target power consumption of each customer load 400, By performing power control of the customer load 400, the actual power reduction amount of each customer load 400 can follow the target power reduction amount or adjust the target power reduction amount itself.

According to another embodiment of the present invention, the expected power reduction amount calculating unit 330 may provide the estimated power reduction amount to the target power reduction amount calculating unit 320 or may be provided by the first interface unit 310 to each of the customer loads 400 ) To the target power reduction amount calculating unit 320. [0060] According to this embodiment, the target power reduction amount calculating unit 320 can reflect the estimated power reduction amount or the power consumption amount of each customer load 400 at the time of calculating the target power reduction amount. For example, the target power reduction amount calculating unit 320 can reduce the target power reduction amount when the result obtained by subtracting the estimated power reduction amount from the target power reduction amount is greater than or equal to the positive threshold value, The target power reduction amount can be increased when the result obtained by subtracting the amount is greater than the negative threshold value.

The power demand management server 210 according to the present invention may further include an authentication unit 380, an encryption / decryption unit 390, and a bid request generation unit 395, as shown in FIG.

The authentication unit 380 authenticates one or more information collecting apparatuses 220 that provide the power consumption of each customer load 400 to the power demand management server 210. [ Specifically, the authentication unit 380 receives an authentication request including identification information of each information collecting device 220 from one or more information collecting devices 220. If the identification information that is the same as the identification information included in the received authentication request is recorded in the database 370, the authentication unit 380 determines that the information collection apparatus 220 corresponding to the identification information is a legitimate information collection apparatus 220 . If the same identification information as the identification information included in the received authentication request is not recorded in the database 370, the authentication unit 380 transmits the information collection apparatus 220 corresponding to the identification information to the legitimate information collection apparatus 220 ).

The authentication unit 380 issues different encryption keys to the information collecting device 220 judged to be the legitimate information collecting device 220 for each information collecting device 220 and transmits the issued encryption key to the first interface 310 to the information collecting device 220. The authentication unit 370 matches the encryption key issued to the information collecting device 220 with the identification information of the information collecting device 220 and stores the matching key in the database 370.

The reason why the power demand management server 210 according to the present invention authenticates the information collecting apparatus 220 by receiving the authentication request from each information collecting apparatus 220 through the authentication unit 380 is as follows. When the device 220 and the power demand management server 210 are connected wirelessly, the IP information allocated to the information collecting device 220 is changed each time the power demand management server 210 is connected to the power demand management server 210, Can not obtain the IP information of the information collecting device 220 and can not transmit the authentication request to the information collecting device 220. [

In addition, the authentication unit 380 may periodically receive the status information of the information collecting apparatuses 220 arranged for each customer load 400, and may determine the status of the information collecting apparatuses 220.

The encryption / decryption unit 390 encrypts the command to be provided from the power demand management server 210 to the information collecting apparatuses 220 using the encryption key issued to the information collecting apparatuses 220, To each of the information collecting devices 220 via the network. The encryption / decryption unit 390 decrypts the status information received from the information collecting apparatuses 220 through the first interface unit 310 and the power consumption using an encryption key issued to the information collecting apparatuses 220 And decodes it. At this time, the command to be provided to the information collecting apparatuses 220 may include a device reset, an IP information update, or a weighing cycle change of each information collecting apparatuses 220.

The bid request generation unit 395 generates a bid request by integrating the desired amount of power reduction received when each desired amount of power reduction desired by each customer is received from each customer terminal 500 through the information providing unit 360 . The bid request generation unit 395 delivers the generated bid request to the first interface unit 310. [

The first interface unit 310 transmits the bid request generated by the bid request generation unit 395 to the power exchange server 300. When the corresponding bid request is approved by the power exchange server 300 and a power reduction instruction corresponding to the bid request is received from the power exchange server 300, the first interface unit 310 calculates a power reduction instruction as a target power reduction amount calculation (320).

According to this embodiment, the target power reduction amount calculating unit 320 can calculate the desired power reduction amount received from each customer terminal 500 as the target power reduction amount of each customer load 400. [

Although not shown in FIG. 3, the power demand management server 210 according to the present invention further includes a customer information management unit that manages information on each customer who subscribes to the power demand management service of the power demand management server 210 . The customer information management unit newly registers information on customers who participate in the power demand management service in the database 370 or performs correction or deletion of customer information registered in the database 370.

Hereinafter, the configuration of the information collecting apparatus according to the present invention will be described in detail with reference to FIG.

FIG. 6 is a block diagram schematically showing the configuration of the information collecting apparatus shown in FIG. 2. FIG. 6, an information collecting apparatus 220 according to an embodiment of the present invention includes a meter reading information receiving unit 610, a power consumption calculating unit 620, and a second interface unit 630. As shown in FIG. The information collecting apparatus 220 according to an embodiment of the present invention may further include a plurality of memory maps 640, a calculation rule database 650, and an authentication request unit 660.

The meter reading information receiving unit 610 receives the meter reading information from the meter 410 installed in each customer load 400. In one embodiment, the meter reading information receiving unit 610 may receive the number of rotations of the meter 410 for a predetermined period of time from the meter 410 installed in each customer load 400. To this end, the meter reading information receiving unit 610 may receive the time synchronization with the meter 410 before receiving the meter reading information from the meter 410.

The meter reading information receiving unit 610 provides the received rotation number to the electric power consumption calculating unit 620. [

The power consumption calculation unit 620 calculates the power consumption of each customer load 400 based on the number of revolutions received from the meter reading information receiving unit 610. [ In one embodiment, the power usage calculation unit 620 may calculate the instantaneous power usage amount, which is the power usage amount at the current point of time of each customer load 400, and the cumulative power usage amount, which is the power usage amount up to the current point of time, .

Specifically, the power consumption calculation unit 620 calculates the power consumption of each customer load 400 for a predetermined time period based on the number of revolutions received from the meter reading information receiving unit 610, It can be calculated by instantaneous power consumption. Also, the power consumption calculation unit 620 can calculate the accumulated power consumption up to the present time by adding up the instantaneous power consumption at the current time to the cumulative power consumption until the previous time interval.

The second interface unit 630 provides the power consumption calculated by the power consumption calculation unit 620 to the power demand management server 210. The second interface unit 630 may generate and transmit state information of the information collecting apparatus 210 to the power demand management server 210.

Meanwhile, the second interface unit 630 may receive a command for controlling the information collecting apparatus 220 from the power demand management server 210.

In one embodiment, as shown in FIG. 2, each customer's customer load 400 may be comprised of a plurality of sub-loads 400a-400n, and the meters 410 may be coupled to a respective sub-load 400a-400n (400a to 400n) of the sub loads (400a to 400n) of the sub loads (400a to 400n). According to this embodiment, the information collecting apparatus 220 calculates the power consumption amount of each of the sub loads 400a to 400n based on the meter reading information generated by the meters 410 installed in the respective sub loads 400a to 400n And integrates them into one value, and transmits them to the power demand management server 210.

Hereinafter, the information collecting device 220 for performing the functions described above will be described in more detail.

The meter reading information receiving unit 610 receives the meter reading information according to the power usage of each of the sub loads 400a to 400n from each of the meters 410 and provides the meter reading information to the power usage calculating unit 620.

In one embodiment, each meter 410 may be a different type of meter 410 using different protocols, so the meter reading information receiver 610 may convert the meter reading information received from the different kind of meter 410 According to a protocol used by the meter 410, and converts the received meter reading information into a form that can be processed by the power consumption calculation unit 620. [

The power consumption calculation unit 620 calculates the power consumption of each of the sub loads 400a to 400n based on the meter reading information according to the power usage of each of the sub loads 400a to 400n. The power consumption calculation unit 620 stores the power consumption calculated for each of the subloads 400a to 400b in the memory map 640 allocated to each of the meters 410 disposed in the respective subloads 400a to 400b.

The plurality of memory maps 640 are matched one-to-one with the meters 410 installed in the respective sub-loads 400a to 400n, and the power consumption calculated based on the meter reading information generated by each meter 410 .

The calculation rule database 650 stores calculation rules necessary for integrating the power consumption recorded in each memory map 640 into one value. The power usage calculation unit 620 integrates the power usage amounts recorded in each memory map 640 into one value by using the calculation rules recorded in the calculation rule database 650. [

 The reason for including the calculation rule database 650 for integrating the power consumption in the present invention is that when the power consumption calculation unit 620 integrates the power consumption recorded in each memory map 640 into one value, This is because the calculation method of integrating the power usage amounts based on the meter reading information generated by each meter 410 can be changed depending on the kind of the meter 410.

For example, when the memory map 640 in which the power consumption is stored is allotted to the same kind of the meter 410, the calculation rule database 650 stores a calculation rule for integrating the power usage amounts recorded in each memory map 640 The addition operation rule is recorded. Therefore, the power usage calculation unit 620 integrates the power usage amounts into a single value by summing up all the power usage amounts recorded in the memory map 640. [

 As another example, if some memory map 640 of the memory maps 640 where power usage is stored is allocated to meters 410 in relation to the mother meter 410 and the child meter 410 The calculation rule database 650 stores the amount of power consumption recorded in the memory map 640 allocated to the mother meter 410 and the amount of power consumption recorded in the memory map 640 allocated to the child meter 410 A subtraction arithmetic rule is recorded as an arithmetic rule for integrating power consumption. Therefore, the power consumption calculation unit 620 calculates the power consumption amount by subtracting the power consumption amount recorded in the memory map 640 allocated to the self-weighing meter 410 from the power consumption amount recorded in the memory map 640 allocated to the parent weighing device 410 And integrates the power usage amount based on the meter reading information of the parent meter 410 and the power usage amount based on the meter reading information of the character meter 410 into one value.

As described above, the information collecting apparatus 220 according to the present invention is connected to the plurality of meters 410 installed in each customer load 400 by N: 1, and is calculated based on the meter reading information of each meter 410 Since the power consumption can be integrated into one value and transmitted to the power demand management server 410, even if a customer is equipped with a plurality of meters 410, only one information collection device 220 is required. And convenience of management such as maintenance and the like is increased.

Meanwhile, the authentication request unit 660 included in the information collecting apparatus 220 according to the present invention generates a device authentication request and transmits the request to the power demand management server 210. The device authentication request includes the identification information assigned to the information collection device 220. [ The authentication request unit 660 determines whether the information collecting apparatus 220 has been successfully authenticated by the power demand management server 210 and a different encryption key is issued for each information collecting apparatus 220 from the power demand management server 210 , And transmits the issued encryption key to the second interface unit 630.

Accordingly, the second interface unit 630 encrypts the power consumption and the status information of the information collecting apparatus 220 using the encryption key, and transmits the encrypted information to the power demand management server 210. In addition, the second interface unit 630 decrypts the encrypted command transmitted from the power demand management server 210 with an encryption key. In one embodiment, the encrypted command sent from the power demand management server 210 may include a device reset, an IP information update, or a metering cycle change.

In one embodiment, when the encryption key issued by the power demand management server 210 is updated at regular intervals and transmitted, the authentication request unit 660 deletes the previously issued encryption key and transmits the updated encryption key Save it.

It will be understood by those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof.

It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

200: Power demand management system 210: Power demand management server
220: Information collecting apparatus 300: Power Exchange server
400: customer load 500: customer terminal
310: first interface unit 320: target power reduction amount calculating unit
330: Estimated power reduction amount calculation unit 340: Power consumption monitoring unit
350: settlement part 360: information provision service
370: Database 380: Authentication section
390: encryption / decryption unit 395: bid request generation unit

Claims (18)

A target power reduction amount calculating unit for calculating a target power reduction amount for each customer load by distributing a total power reduction amount to be reduced by customer loads; And
A first cumulative power usage amount at a first time point, which is a start time point of a target time slot including a current time point among a plurality of time slots for each customer load, and a second cumulative power use amount at a second time point, A predicted power reduction amount calculation unit for calculating a predicted power reduction amount during the target time slot,
Wherein the target power reduction amount calculating unit adjusts a target power reduction amount of each customer load according to a result of comparison between a target power reduction amount and an estimated power reduction amount calculated for each customer load,
The expected power reduction amount calculating unit calculates,
Equation

To calculate the estimated power reduction amount,
Y (t1) represents the first cumulative power consumption amount, Y (t2) represents the second cumulative power consumption amount, and Y (t2) represents the second cumulative power consumption amount t1 denotes a time value of the first time point in the target time slot TSn, t2 denotes a time value of the second time point in the target time slot TSn, P denotes a time value of the target time slot TSn TSn) of the power demand management server. delete The method according to claim 1,
The expected power reduction amount calculating unit calculates,
Wherein the ratio of the estimated power reduction amount and the target power reduction amount is calculated as a predicted reduction performance of each of the customer loads. The method according to claim 1,
The target power reduction amount calculating unit may adjust the target power reduction amount for each customer load according to the share ratio between the respective customer loads if the sum of the estimated power reduction amounts by the respective customer loads is larger than the total power reduction amount Power demand management server. The method according to claim 1,
Wherein the target power reduction amount calculating unit calculates the target power reduction amount of each customer load sequentially from a ranking in which the estimated power reduction amount of each customer load is larger than the total power reduction amount of each customer load when the sum of the estimated power reduction amounts by the respective customer loads is larger than the total power reduction amount And the target power reduction amount of each customer load is set by setting the estimated power reduction amount of each customer. The method according to claim 1,
Wherein the target power reduction amount calculating unit calculates the target power reduction amount for each customer load when the sum of the estimated power reduction amounts by the respective customer loads is greater than the total power reduction amount, The target power reduction amount per load is adjusted,
Wherein the average expected power reduction amount is a value obtained by subtracting the total power reduction amount from the sum of the estimated power reduction amounts by the respective customer loads and dividing the total power reduction amount by the total number of customer loads. The method according to claim 1,
The power demand management server calculates a desired power reduction amount for each customer load received from the customer terminal to generate a power reduction amount bid request and receives a power reduction instruction according to the power reduction amount bid request from the power exchange server Features a power demand management server. The method according to claim 1,
If the information collection device for acquiring the power usage amount of each customer load from two or more heterogeneous meters is an information collection device having a legitimate authority, the power demand management server may transmit different encryption keys for encrypting the power usage amount for each information collection device And decrypts the encrypted power usage received from the information collection device with the encryption key or encrypts a command to be transmitted to the information collection device with the encryption key. The method according to claim 1,
Wherein the plurality of time slots are configured in 24 units, and the interval size of each time slot is set to 60 minutes. At least one information collecting device for acquiring a power consumption of each customer load; And
Distributing a total power reduction amount to be borne by the entire customer load to calculate a target power reduction amount to be borne by each of the customer loads and calculating an estimated power reduction amount of each of the customer loads based on the power consumption amount received from the one or more information collection apparatuses And a power demand management server for calculating a reduction amount,
Wherein the at least one information collecting device obtains a power usage amount of each customer load from two or more heterogeneous meters,
The power demand management server includes:
Equation

And a predicted power reduction amount calculation unit that calculates the expected power reduction amount using the calculated power reduction amount,
In the above equation, G (TSn) denotes a predicted power reduction amount during a target time slot (TSn) including a current time among a plurality of time slots (TSn), and Y (T2) represents a second cumulative power consumption at a second time point, which is the current time, and t1 represents a first cumulative power consumption at a first time point, , T2 represents a time value of the second time point in the target time slot (TSn), and P represents an interval size of the target time slot (TSn). Management system. delete delete 11. The method of claim 10,
Wherein the at least two heterogeneous meters use different protocols. 11. The method of claim 10,
Wherein the at least one information collecting device includes a power consumption calculation unit for calculating a power consumption of each customer load based on the number of revolutions of the at least two heterogeneous meters installed in each customer load for a predetermined time, system. 15. The method of claim 14,
The power consumption calculation unit calculates,
And calculates at least one of an instantaneous power consumption amount at the current point of time of each customer load and a cumulative electric power consumption amount up to the present point of time based on the number of revolutions for the predetermined time as the electric power consumption amount. 15. The method of claim 14,
Each customer load comprising a plurality of sub-loads,
The power usage calculation unit may calculate the power usage of each of the sub-loads based on the number of revolutions of the meters connected to the respective sub-loads, and calculate the power usage of the customer load by integrating the power usage of each of the sub- Features a power demand management system. 17. The method of claim 16,
The information collecting apparatus includes:
A plurality of memory maps each storing power consumption of each subload calculated by the power usage calculation unit; And
Further comprising a calculation rule database storing calculation rules for integrating power usage amounts stored in the plurality of memory maps,
Wherein the power usage calculation unit calculates power usage amounts stored in the plurality of memory maps using the calculation rules stored in the calculation rule database to consolidate power usage amounts of the respective subloads. 11. The method of claim 10,
Wherein the at least one information collecting device receives different encryption keys issued for each information collecting device from the power demand management server when the at least one information collecting device is authenticated as having a legitimate right by the power demand management server, Wherein the information processing apparatus encrypts the encrypted information with an encryption key issued for each information collecting device and transmits the encrypted command to the power demand management server or decrypts the encrypted command with an encryption key issued for each information collecting device, .

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