JP6072474B2 - Power management apparatus, power control system, and power management method - Google Patents

Description

  The present invention relates to a power management apparatus, a power control system, and a power management method for managing a load device based on a target value.

  2. Description of the Related Art In recent years, a technology for controlling a load device and a distributed power source provided in a consumer by a power control device (eg, HEMS: Home Energy Management System) provided for each consumer is known (see Patent Document 1). Further, it is proposed that a local control device accesses a server via a network such as the Internet, reads a control instruction from the server, and the local control device controls a load device based on the read control instruction. (See Patent Document 2).

JP 2003-309928 A JP 2009-260913 A

  A target value for power consumption is set for controlling the load device, and the load device is managed and / or controlled so that the power consumption does not exceed the target value. The target value is created in advance automatically or manually based on the actual value of the power consumption of the consumer's normal activity. However, higher accuracy is required.

  Therefore, the objective of this invention made | formed in view of this situation is to provide the power management apparatus which can manage a load apparatus appropriately with higher precision.

In order to solve the above-described problems, the power management apparatus according to the first aspect is
A power management apparatus that manages the power status of a load device based on a target value related to power consumption, an event management unit that stores an event held in a consumer, and a correction type that specifies a correction method for the target value And a control unit that corrects the target value according to the event ,
The control unit does not correct the target value when the correction type specifies that correction of the target value is unnecessary, and specifies that the correction of the target value is required by the correction type. In such a case, the target value is corrected .

The power management device according to the second aspect is
It is preferable that the control unit corrects the target value for the load device used in a place corresponding to the type of the event.

The power management device according to the third aspect is
Preferably, the event management unit can store the execution date and time of the event, and the control unit corrects the target value at the stored execution date and time.

The power management device according to the fourth aspect is
It is preferable that the control unit corrects the target value using a correction value set for each event.

The power management device according to the fifth aspect is
It is preferable that the correction value of the same type of event is set based on power consumption at the time of event execution.

The power management device according to the sixth aspect is
It is preferable that the control unit updates the correction value of the same type of event each time the event is executed.

The power management device according to the seventh aspect is
It is preferable that the control unit creates the target value for each reference time used for the contract power agreement between the consumer and the power company.

The power control system according to the eighth aspect includes a load device,
A power management apparatus that manages the power status of the load device based on a target value related to power consumption, an event management unit that stores an event held in a consumer, and a correction type that specifies a correction method for the target value the basis, and a power management unit and a control unit for correcting the target value in response to said event,
The control unit does not correct the target value when the correction type specifies that correction of the target value is unnecessary, and specifies that the correction of the target value is required by the correction type. In such a case, the target value is corrected.

  As described above, the solution of the present invention has been described as an apparatus. However, the present invention can be realized as a method, a program, and a storage medium storing the program, which are substantially equivalent thereto, and the scope of the present invention. It should be understood that these are also included.

In addition, a power management method that realizes the ninth aspect of the present invention as a method,
A storage step for storing an event held in a consumer;
Based on a correction type that specifies a correction method for a target value related to power consumption, a correction step that corrects a target value related to power consumption according to the event;
A management step of managing the power status of the load device based on the target value,
In the correction step, if it is specified that the correction of the target value is not required by the correction type, the target value is not corrected, and it is specified that the correction of the target value is required by the correction type. In the case where it is detected, the target value is corrected.

  According to the power management device, the power control system, and the power management method according to the present invention configured as described above, it is possible to appropriately manage load devices even when an event is held.

It is a communication system block diagram which shows schematic structure of the power control system containing the power management apparatus which concerns on one Embodiment of this invention. It is a functional block diagram of the apparatus which exists in LAN in FIG. It is a graph which shows the target value created according to the demand time period which a control part creates. It is a table which an event storage part memorizes by input of event setting. It is a graph which shows correction | amendment of a target value when making a morning market into an event with respect to the target value shown in FIG. It is a flowchart explaining the target value correction process which a power management apparatus performs.

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

  First, a power control system having a power management apparatus according to the first embodiment of the present invention will be described. FIG. 1 is a communication system configuration diagram showing a schematic configuration of a power control system including a power management apparatus according to the first embodiment.

  As shown in FIG. 1, the power control system 10 includes the Internet 11, a plurality of power control devices 12, a plurality of user terminals 13, and a power management device 14.

  The Internet 11 connects a plurality of power control devices 12, a plurality of user terminals 13, and a power management device 14 to communicate signals such as data and control instructions. Note that a LAN (Local Area Network) 15 is constructed for each of a plurality of stores, for example, and each LAN 15 has at least one power control device 12 and at least one user terminal 13. Note that the power control device 12 and the user terminal 13 existing in the same LAN 15 can directly communicate with each other.

  The power control device 12 is, for example, an EMS (Energy Management System) Gateway. The power control device 12 periodically transmits a measurement value such as power consumption detected by a sensor described later to the power management device 14. In addition, the power control device 12 acquires a control instruction for a load device existing in the same LAN 15 from the power management device 14 by polling. The power control device 12 controls load devices existing in the same LAN 15 based on the control instruction acquired from the power management device 14.

  The user terminal 13 has a display, and can display the measured values measured by the sensors existing in the same LAN 15 and the operating state of the load device existing in the same LAN 15. When the user terminal 13 displays the measurement value and the control state, the data is acquired by the power management apparatus 14 by HTTP, and the web browser of the user terminal 13 forms the measurement value display page.

  Further, the user terminal 13 issues a control instruction for the load device existing in the same LAN 15. Further, the user terminal 13 issues an input instruction for inputting settings for controlling load devices existing in the same LAN 15, for example, event settings described later. The issuance of the control instruction and the input instruction is based on detection of a user operation on the device control page configured by the web browser. The user terminal 13 transmits the issued control instruction and input instruction to the power management apparatus 14.

  The power management device 14 is, for example, an EMS (Energy Management System) server, and receives and stores measurement values transmitted from the power control device 12. Further, the power management apparatus 14 accepts a control instruction issued by the user terminal 13. Further, the power management apparatus 14 creates a control instruction for each load device. Each power control device 12 acquires the received control instruction or the created control instruction by polling. The power management apparatus 14 can accept and update registration of sensor information existing in each LAN 15.

  In particular, as will be described later, the power management device 14 creates a target value for the power consumption of the load device, sets a correction value, and corrects the target value based on the correction value, and based on the corrected target value. Create control instructions for each load device.

  The power management device 14 includes a data collector 16, a control unit 17, a control queue 18, a memory 19, and an event management unit 20. The data collector 16 collects and stores measurement values and sensor registration information. The collection of these data by the data collector 16 is periodic and the stored data is periodically updated. The control unit 17 creates control instructions for each load device using various algorithms so as to achieve various purposes. The control queue 18 stores the control instruction received from the user terminal 13 and the control instruction created by the control unit 17. The memory 19 stores various data used by the control unit 17 to create a control instruction. The event management unit 20 stores an event setting input instruction, as will be described later.

  Next, transmission of measured values and control of load devices by the power control device 12 will be described. FIG. 2 is a functional block diagram of a device existing in an arbitrary LAN 15.

  In an arbitrary LAN 15, a first sensor 21, a sensor management unit 22, a second sensor 23, a third sensor 24, a load device 25, the power control device 12, and a user terminal 13 exist.

  The first sensor 21 is an arbitrary sensor such as a current sensor, a power sensor, a temperature sensor, or an illuminance sensor, and detects a measurement value related to the driving state of the load device 25 existing in the LAN 15.

  The sensor management unit 22 detects a measurement value from the first sensor 21. The sensor management unit 22 communicates with the power control apparatus 12 by a standard protocol such as Sig2.0 (Smart Energy Profile 2.0) of ZigBee (registered trademark) and Echonet (registered trademark) or ECHONET Lite.

  The second sensor 23 is an arbitrary sensor such as a current sensor, a power sensor, a temperature sensor, or an illuminance sensor, and detects a measurement value related to the driving state of the load device 25 existing in the LAN 15. Further, unlike the first sensor 21, the second sensor 23 communicates with the power control apparatus 12 using a unique protocol.

  The third sensor 24 is an arbitrary sensor such as a current sensor, a power sensor, a temperature sensor, or an illuminance sensor, and detects a measurement value related to the driving state of the load device 25 existing in the LAN 15. Further, unlike the first sensor 21 and the second sensor 23, the third sensor 24 communicates directly with the power control apparatus 12 by a standard protocol such as SEP2.0 and Echonet (registered trademark) or ECHONET Lite. Do.

  The load device 25 is a device that is driven based on electric power, such as an air conditioner, a lamp, and a refrigerator. The load device 25 can adjust the operation state such as temperature adjustment and illuminance adjustment, and the power consumption of the load device 25 varies due to these adjustments. The load device 25 communicates with the power control apparatus 12 by a standard protocol such as SEP2.0 and Echonet (registered trademark) or ECHONET Lite.

  As described above, the power control device 12 can communicate with the sensor management unit 22 and the second sensor 23, and the measured values of the first sensor 21 and the second sensor 23 are periodically transmitted via the Internet 11. It transmits to the power management apparatus 14. Further, as described above, the power control device 12 acquires a control instruction for the load device 25 existing in the same LAN 15 from the power management device 14 by polling, and controls the operation state of the load device 25 based on the control instruction. .

  As described above, the user terminal 13 displays the measured values of the first sensor 21 and the second sensor 23 existing in the same LAN 15 and displays the operation state of each load device 25. Further, as described above, the user terminal 13 can directly instruct control of each load device 25, for example, setting of the temperature itself and setting of the illuminance itself.

  Next, management of the load device 25 based on the target value by the power management apparatus 14 and correction of the target value by event setting will be described below.

  The control unit 17 of the power management apparatus 14 creates a target value related to the power consumption of the load device 25. The target value is a threshold value for comparison with the actual power consumption of the load device 25 for management of the load device 25. The target value is created according to the date and the demand time limit in one day (see FIG. 3). The demand time limit is a reference time used for a contract power agreement between a customer who operates a store or the like and a power company. For example, when the demand time period is 30 minutes and the contract power is 300 kw, the consumer is allowed to consume 300 kw of power on average in each demand time period. The target value can be created for each LAN 15, for each specific load device 25 in the same LAN, or for each load device 25.

  The control unit 17 creates a target value based on the actual value of accumulated power consumption (hereinafter referred to as demand power) for each demand period. The actual value of demand power is calculated based on the measured value. For example, the control unit 17 creates a target value for each season and demand period by averaging a plurality of past actual values for each season and demand period.

  The control unit 17 manages the load device 25 based on the created target value. For example, the control unit 17 issues a warning to the user terminal 13 when the predicted value of demand power in the current demand time limit exceeds the target value. For example, the control unit 17 creates a control instruction for reducing the power consumption of the load device 25 when the predicted value of demand power in the current demand time limit exceeds the target value.

  In stores, various events such as morning markets, talk shows, demonstration sales, and power saving campaigns are held. When an event is held, the demand power can fluctuate significantly from the normal activity. The control unit 17 creates a target value without using the actual value of demand power at the time of the event in order to exclude the influence of the event from the control of the load device 25 based on the target value. Further, as will be described later, the control unit 17 corrects the created target value according to the event to be held, and manages the load device 25 based on the corrected target value.

  The event setting scheduled to be held can be input for each LAN 15 using the user terminal 13. In the event setting input, the user terminal 13 requests at least the content of the event, the start date / time, the end date / time, and the correction type. Further, the user terminal 13 requests input of a correction value depending on the input correction type.

  The correction type specifies a target value correction method. For example, a correction type of 0 specifies that no correction is required for the event. The correction type of 1 specifies that the target value is corrected by adding or subtracting the input correction value to or from the target value. The correction type of 2 specifies that the target value is corrected by multiplying the input correction value by the target value. The correction type of 3 specifies that the target value is corrected using a correction value automatically created by the control unit 17 of the power management apparatus 14.

  When the user terminal 13 detects an input of necessary items in the input of the event, the user terminal 13 transmits the input instruction to the power management apparatus 14 as described above. The power management apparatus 14 stores the acquired input instruction in the event management unit 20. For example, the event setting input instruction is stored as a table as shown in FIG.

  When the correction type is 0 in the input instruction, the correction value (for example, 0) corresponding to no correction is stored in the event management unit 20 to complete the setting of the correction value. When the correction type is 1 or 2 in the input instruction, the correction value is included in the input instruction, and the correction value setting is completed by storing the correction value in the event management unit 20.

  When the correction type is 3 in the input instruction, the control unit 17 calculates the correction value and stores it in the event management unit 20, thereby completing the setting of the correction value. The control unit 17 calculates a correction value based on the actual value of demand power in an event held in the past of the same type as the event in the input instruction. For example, the correction value is calculated by subtracting the actual value when the event is not held from the actual value when the event is held among the past actual values of demand power. Similar to the target value, the correction value can be calculated for each demand period, for each LAN 15, for each specific load device 25 in the same LAN, or for each load device 25. In particular, the correction value is calculated only for a specific load device, for example, a load device 25 installed in a specific floor, area, rooftop, plaza in front of the store, or the like according to the type of event.

  The control unit 17 calculates the correction value after the input instruction is acquired and before the event start time. Even after calculation of the correction value, when an event of the same type as the event in the acquired input instruction is held, the correction value of the event management unit 20 is updated based on the actual value of demand power in the event. Also good.

  The control unit 17 corrects the target value using the set correction value. For example, when the morning market is input as an event and the demand time periods corresponding to the holding time are 7 o'clock and 8 o'clock, the control unit 17 corrects the target values at 7 o'clock and 8 o'clock (see FIG. 5).

  Next, target value correction processing executed by the control unit 17 will be described with reference to the flowchart of FIG. The control unit 17 executes target value correction processing after execution of a predetermined cycle and / or event.

  In step S100, the control unit 17 determines whether or not the event management unit 20 stores an event scheduled to be held. When no event is stored, the target value correction process is terminated. When the event is stored, the process proceeds to step S101.

  In step S <b> 101, the control unit 17 confirms the event correction type stored in the event management unit 20. When the correction type is 0, the target value correction process is terminated. When the correction type is 1 or 2, the process skips steps S102 and S103 and proceeds to step S104. If the correction type is 3, the process proceeds to step S102.

  In step S102, the control unit 17 searches the measurement values stored in the data collector 16 for the same type of event with the same demand time period as the event whose correction type is confirmed in step S101, that is, the actual value. To do. When the actual value is retrieved, the process proceeds to step S103.

  In step S103, the control unit 17 calculates a correction value using the actual value searched in step S102. After calculating the correction value, the process proceeds to step S104.

  In step S104, the control unit 17 corrects the target value based on the correction value stored in the event management unit 20 or the correction value calculated in step S103. When the target value is corrected, the target value correction process is terminated.

  According to the power management apparatus of the present embodiment configured as described above, the target value can be corrected according to the event. With such a configuration, it is possible to appropriately manage the load device even when the event is held.

  Further, according to the power management apparatus of the present embodiment, the correction value can be set for each LAN 15, for each specific load device 25 in the same LAN 15, or for each load device 25. Therefore, the accuracy of target value correction can be improved.

  Further, according to the power management apparatus of the present embodiment, the target value at the start date / time and end date / time of the event, that is, the execution date / time is corrected, so that the power consumption can be managed for each daytime time.

  Further, according to the power management apparatus of the present embodiment, it is possible to calculate and set the correction value of the same type of event based on the power consumption at the time of past event execution. With such a configuration, the correction value is automatically set, so that the determination and input of the correction value by the user can be omitted.

  Further, according to the power management apparatus of the present embodiment, the target value correction process is executed and the correction value is updated each time an event is executed. With such a configuration, it is possible to correct the target value by reflecting the actual value of demand power in the latest event.

  Although the present invention has been described based on the drawings and embodiments, it should be noted that those skilled in the art can easily make various changes and modifications based on the present disclosure. Therefore, it should be noted that these variations and modifications are included in the scope of the present invention.

  For example, in the present embodiment, the configuration is such that the remote load device 25 is managed using a power management device for a high-voltage power receiver such as a store, but is not limited to such a power management device. For example, it is also possible to apply to a power management apparatus provided for each general consumer and managed by the general consumer, such as HEMS. In the present embodiment, the EMS server is used, but the present invention can be applied to a HEMS that does not use the EMS server provided for each general consumer.

  Further, in the present embodiment, the power management apparatus is configured to create the target value, but may be configured to set the target value by the user input to the user terminal 13.

DESCRIPTION OF SYMBOLS 10 Power control system 11 Internet 12 Power control apparatus 13 User terminal 14 EMS (Energy Management System) server 15 LAN (Local Area Network)
16 data collector 17 controller 18 control queue 19 memory 20 event management unit 21 first sensor 22 sensor management unit 23 second sensor 24 third sensor 25 load device

Claims (9)

A power management device that manages the power status of a load device based on a target value for power consumption,
An event management section for storing events held at consumers;
A control unit that corrects the target value according to the event based on a correction type that specifies a correction method of the target value;
The control unit does not correct the target value when the correction type specifies that correction of the target value is unnecessary, and specifies that the correction of the target value is required by the correction type. The power management apparatus is characterized in that the target value is corrected in the case of failure.   The power management apparatus according to claim 1, wherein the control unit corrects the target value for the load device used in a place corresponding to the type of the event.   3. The power management apparatus according to claim 1, wherein the event management unit can store an execution date and time of the event, and the control unit corrects the target value at the stored execution date and time. A power management apparatus characterized by the above.   4. The power management apparatus according to claim 1, wherein the control unit corrects the target value using a correction value set for each event. 5. Management device.   5. The power management apparatus according to claim 4, wherein the correction values for the same type of event are set based on power consumption at the time of event execution.   6. The power management apparatus according to claim 5, wherein the control unit updates the correction value of the same type of event each time an event is executed.   7. The power management apparatus according to claim 1, wherein the control unit creates the target value according to a reference time used for a contract power agreement between the consumer and the power company. A power management apparatus characterized by: Load equipment,
A power management apparatus that manages the power status of the load device based on a target value related to power consumption, an event management unit that stores an event held in a consumer, and a correction type that specifies a correction method for the target value the basis, and a power management unit and a control unit for correcting the target value in response to said event,
The control unit does not correct the target value when the correction type specifies that correction of the target value is unnecessary, and specifies that the correction of the target value is required by the correction type. The power control system is characterized by correcting the target value in the case of failure. A storage step for storing an event held in a consumer;
Based on a correction type that specifies a correction method for a target value related to power consumption, a correction step that corrects a target value related to power consumption according to the event;
A management step of managing the power status of the load device based on the target value,
In the correction step, if it is specified that the correction of the target value is not required by the correction type, the target value is not corrected, and it is specified that the correction of the target value is required by the correction type. The power management method is characterized in that the target value is corrected in the case of failure.

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