Demand monitoring device and demand monitoring method

Abstract

To calculate demand information according to acquirable information.SOLUTION: A demand monitoring device for monitoring demand information of power supplied from a cubicle, comprises: a measurement method acquisition unit which acquires information showing whether to measure the demand information by any kind of measurement methods among a plurality of predetermined kinds of demand information; a detection unit which acquires information used in the measurement method of the demand information shown by the information acquired by the measurement method acquisition unit; a calculation unit which calculates the demand information by the measurement method of the demand information based on the information acquired by the measurement method acquisition unit based on the information acquired by the detection unit; and an output unit which outputs the demand information obtained by calculation, wherein the measurement method includes a first method for measuring the demand information on the basis of information acquired by a smart meter and a second method for measuring the demand information on the basis of information acquired from a high voltage system.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a demand monitoring device and a demand monitoring method. [Background technology]

[0002] Conventionally, there has been an electric safety monitoring device capable of monitoring demand information (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Utility Model Registration No. 3091715 Summary of the Invention [Problem to be solved by the invention]

[0004] According to the conventional technology as described above, it is possible to monitor demand information by one device without providing a separate demand monitoring device in addition to the electrical safety monitoring device. Here, depending on the electrical safety monitoring device, a smart meter may or may not be provided. When a smart meter is provided, it is possible to obtain highly accurate demand information based on information obtained from the smart meter. However, when a smart meter is not provided, it becomes necessary to obtain demand information based on information obtained from the electrical system. The device that obtains highly accurate demand information based on information obtained from the smart meter and the device that obtains demand information based on information obtained from the electrical system are different devices. That is, according to the conventional technology, the method of calculating demand information differs depending on whether a smart meter is provided or not, and it was necessary to prepare different devices for each case.

[0005] The present invention has been made in view of the above circumstances, and has an object to provide a demand monitoring device and a demand monitoring method capable of calculating demand information in accordance with obtainable information. [Means for solving the problem]

[0006] (1) One aspect of the present invention is a demand monitoring device that monitors demand information of electricity supplied from a cubicle, and includes a measurement method acquisition unit that acquires information indicating whether the demand information is measured by one of a plurality of predetermined types of measurement methods of the demand information, a detection unit that acquires information used in the measurement method of the demand information indicated by the information acquired by the measurement method acquisition unit, a calculation unit that calculates the demand information based on the information acquired by the detection unit using the measurement method of the demand information based on the information acquired by the measurement method acquisition unit, and an output unit that outputs the demand information obtained by the calculation, wherein the measurement methods include a first method of measuring the demand information based on information acquired from a smart meter and a second method of measuring the demand information based on information acquired from a high-voltage system.

[0007] (2) One aspect of the present invention is that, in the demand monitoring device described in (1) above, when measuring the demand information using the first method, the detection unit acquires information relating to accumulated power and time from the smart meter, and when measuring the demand information using the first method, the calculation unit calculates the demand information based on the accumulated power and time acquired by the detection unit.

[0008] (3) One aspect of the present invention is that, in the demand monitoring device described in (1) or (2) above, when the demand information is measured using the second method, the detection unit acquires information regarding integrated power from a high-voltage multimeter monitoring the high-voltage system, and when the demand information is measured using the second method, the calculation unit calculates the demand information based on the integrated power acquired by the detection unit and time information counted independently.

[0009] (4) One aspect of the present invention is a demand monitoring device according to any one of (1) to (3) above, wherein the calculation unit calculates the demand information by the first method when information regarding integrated power is acquired from a high-voltage multimeter monitoring the high-voltage system by the detection unit, and information regarding integrated power and time is acquired from the smart meter.

[0010] (5) One aspect of the present invention is a demand monitoring device as described in any of (1) to (4) above, wherein the measurement method further includes a third method of measuring the demand information based on information obtained from a low-voltage system.

[0011] (6) One aspect of the present invention is that, in the demand monitoring device described in (5) above, when measuring the demand information using the third method, the detection unit acquires information regarding integrated power from each of a plurality of low-voltage multimeters monitoring a plurality of low-voltage systems branching off from the high-voltage system, and when measuring the demand information using the third method, the calculation unit calculates the demand information based on the sum of the integrated power of each of the low-voltage systems acquired by the detection unit and time information counted independently.

[0012] (7) One aspect of the present invention is a demand monitoring device as described in (5) or (6) above, wherein the calculation unit calculates the demand information using one of the types of the measurement methods based on a predetermined priority, and among the first method, the second method, and the third method, the calculation using the first method has the highest priority, the calculation using the second method has the next highest priority, and the calculation using the third method has the lowest priority.

[0013] (8) One aspect of the present invention is a demand monitoring device as described in any one of (1) to (7) above, further comprising a presentation unit that presents information regarding the type of the measurement method of the demand information indicated by the information acquired by the measurement method acquisition unit.

[0014] (9) One aspect of the present invention is a demand monitoring device as described in any one of (1) to (8) above, wherein the demand information output by the output unit is associated with information regarding the type of the measurement method of the demand information indicated by information acquired by the measurement method acquisition unit.

[0015] (10) One aspect of the present invention is a demand monitoring device described in any of (1) to (9) above, wherein the measurement method acquisition unit acquires information regarding the type of the measurement method of the demand information from a hardware switch by which a user can select the measurement method of the demand information.

[0016] (11) One aspect of the present invention is a demand monitoring method for monitoring demand information of electricity supplied from a cubicle, the demand monitoring method including a measurement method acquisition step of acquiring information indicating whether the demand information is measured by any one of a plurality of predetermined types of measurement methods of the demand information, a detection step of acquiring information used in the measurement method of the demand information indicated by the information acquired by the measurement method acquisition step, a calculation step of calculating the demand information by the measurement method of the demand information based on the information acquired by the measurement method acquisition step based on the information acquired by the detection step, and an output step of outputting the demand information obtained by the calculation, wherein the measurement methods include a first method of measuring the demand information based on information acquired from a smart meter and a second method of measuring the demand information based on information acquired from a high-voltage system. Effect of the Invention

[0017] According to the present invention, demand information can be calculated depending on available information. [Brief description of the drawings]

[0018] [Figure 1] FIG. 1 is a diagram showing a first aspect of a monitoring system according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a diagram showing a second aspect of the monitoring system according to the present embodiment. [Diagram 3] FIG. 11 is a diagram showing a third aspect of the monitoring system according to the present embodiment. [Figure 4] FIG. 2 is a functional configuration diagram showing an example of a functional configuration of the demand monitoring device according to the present embodiment. [Diagram 5] FIG. 13 is a diagram showing an example of a specific aspect of a presentation unit according to the embodiment. [Figure 6] 5 is a flowchart showing an example of a process flow of a demand monitoring method according to the present embodiment. [Figure 7] 1 is a block diagram showing an example of an internal configuration of a demand monitoring device according to an embodiment of the present invention; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] [Embodiment] A demand monitoring device and a demand monitoring method according to the present invention will be described in detail below with reference to the accompanying drawings, showing preferred embodiments. The present invention is not limited to these embodiments, and includes various modifications or improvements. In other words, the components described below include those that a person skilled in the art can easily imagine and those that are substantially the same, and the components described below can be combined as appropriate. In addition, various omissions, substitutions, or modifications of the components can be made without departing from the gist of the present invention. In addition, in the following drawings, the scale and number of each structure may be different from the scale and number of the actual structure in order to make each structure easier to understand.

[0020] The demand monitoring device according to the present embodiment is provided, for example, inside a cubicle. The cubicle according to the present embodiment receives high-voltage power and converts the received high-voltage power into low-voltage power. The low-voltage power converted from the high-voltage power is supplied to a load such as an air conditioner. The cubicle stores a plurality of devices such as a transformer, a disconnector, and a protection device inside. The cubicle according to the present embodiment is used in various environments. Specifically, the following first to third aspects can be exemplified as various environments. Details of the aspects of the monitoring system according to the present embodiment will be described below with reference to Figs. 1 to 3. The cubicle according to the present embodiment is also generally called a substation facility.

[0021] FIG. 1 is a diagram showing a first aspect of the monitoring system according to the present embodiment. With reference to the figure, the monitoring system 1 according to the first aspect will be described in detail. The monitoring system 1 includes a cubicle 10, a storage device 30, and an air conditioner 40 as a load. The cubicle 10 is connected to the storage device 30 via a predetermined communication network NW. The monitoring system 1 may include a plurality of cubicles 10, and the plurality of cubicles 10 and the storage device 30 may be connected to each other via the predetermined communication network NW. In the following description, as an example, a case where the monitoring system 1 includes one cubicle 10 will be described.

[0022] The cubicle 10 includes a VCT (Voltage and Current Transformer) 11, a meter unit 12, a smart meter 13, a control unit 14, and an EMS (Energy Management System) 15.

[0023] The VCT 11 receives high voltage power from the utility pole 20. The utility pole 20 is the first pole (number one pole) that receives power sent from the power company. The utility pole 20 and the VCT 11 are connected on-site when the cubicle 10 is installed. The VCT 11 is a potential transformer. The VCT 11 is a device that has the functions of a current transformer (CT) and a voltage transformer (VT). The VCT 11 is used as a transformer in power measurement in combination with a watt-hour meter. Electricity charges are calculated based on the amount of power metered by the VCT 11. The VCT 11 is generally called a current transformer, a power supply and demand potential transformer, or a Metering Out Fit (MOF).

[0024] The meter unit 12 receives high voltage power from the VCT 11. The meter unit 12 measures the high voltage system from which it receives power. The meter unit 12 outputs the measurement results of the high voltage system to the control unit 14.

[0025] The smart meter 13 measures the amount of high voltage power that the cubicle 10 receives from the utility pole 20. The smart meter 13 is installed inside the cubicle 10 or on the utility pole 20. The figure shows an example of the case where the smart meter 13 is installed inside the cubicle 10. The smart meter 13 is connected to the control unit 14. The smart meter 13 outputs the integrated power of the power that the cubicle 10 receives from the utility pole 20 and the time to the control unit 14. The connection between the smart meter 13 and the control unit 14 is performed on-site when the cubicle 10 is installed. The smart meter 13 and the control unit 14 are connected to each other by, for example, a LAN (Local Area Network) cable.

[0026] The control unit 14 is connected to the air conditioner 40 via a contact output line, and supplies power to the air conditioner 40 as a load. The control unit 14 may supply power to a load (not shown) other than the air conditioner 40. The control unit 14 also acquires the results of measurement of the high-pressure system from the meter unit 12. Furthermore, the control unit 14 acquires the integrated power and the time from the smart meter 13. The control unit 14 calculates demand information based on at least one of the acquired information, and outputs the calculated demand information to the EMS 15.

[0027] The EMS 15 is connected to the control unit 14. The EMS 15 and the control unit 14 are connected to each other by, for example, a LAN cable. The EMS 15 acquires demand information from the control unit 14, and outputs the acquired demand information to the storage device 30 via a predetermined communication network NW. Information may be transmitted from the EMS 15 to the storage device 30 using, for example, radio waves such as LTE (Long Term Evolution).

[0028] The storage device 30 includes, for example, a storage device such as a hard disk drive (HDD), a solid state drive (SSD), a flash memory, and a read only memory (ROM). The storage device 30 acquires demand information from the cubicle 10 and stores the acquired information. The storage device 30 acquires demand information from each of the multiple cubicles 10 included in the monitoring system 1 and stores the acquired information. The storage device 30 may be configured using an external device such as a cloud server.

[0029] FIG. 2 is a diagram showing a second aspect of the cubicle according to the present embodiment. With reference to the same figure, the monitoring system 1A according to the second aspect will be described in detail. The monitoring system 1A differs from the monitoring system 1 in that it includes a CB-type cubicle 10A instead of the cubicle 10. The cubicle 10A uses a high-voltage circuit breaker such as a vacuum circuit breaker (VCB) or a gas circuit breaker (GCB) as a main circuit breaker. In the description of the monitoring system 1A, the same components as those in the monitoring system 1 may be denoted by the same reference numerals and description thereof may be omitted.

[0030] The cubicle 10A differs from the cubicle 10 in that the smart meter 13 and the control unit 14 are not connected to each other. The smart meter 13 is provided, for example, outside the cubicle 10A. In the illustrated example, the smart meter 13 is provided on a utility pole 20. Note that the smart meter 13 in the second embodiment may be provided inside the cubicle 10A and may not be connected to the control unit 14. For example, a configuration in which the smart meter 13 is installed inside the cubicle 10A for the purpose of using route B, but an application for using route B has not been made, and therefore the smart meter 13 and the control unit 14 are not connected to each other, is also included in the second embodiment (not the first embodiment).

[0031] In the monitoring system 1A according to the second embodiment, the smart meter 13 and the control unit 14 are not connected to each other, so the control unit 14 cannot acquire the integrated power and the time from the smart meter 13. On the other hand, in the monitoring system 1A according to the second embodiment, the control unit 14 can acquire the results of the measurement of the high-voltage system from the meter unit 12. Therefore, in the monitoring system 1A according to the second embodiment, the control unit 14 calculates demand information based on the results of the measurement of the high-voltage system acquired from the meter unit 12, and outputs the calculated demand information to the EMS 15.

[0032] Depending on the cubicle 10A, an application for use of route B may be made during operation, and route B may be opened. In this case, the smart meter 13 and the control unit 14 are connected to each other. That is, the monitoring system 1A according to the second embodiment may become the monitoring system 1 according to the first embodiment by connecting the smart meter 13 and the control unit 14 to each other.

[0033] FIG. 3 is a diagram showing a third aspect of the cubicle according to the present embodiment. With reference to the same figure, the monitoring system 1B according to the third aspect will be described in detail. The monitoring system 1B differs from the monitoring system 1 in that it includes a PF-S type cubicle 10B instead of the cubicle 10. The cubicle 10B uses a high-voltage current-limiting fuse (Power Fuse; PF) or a high-voltage AC load break switch (Load Break Switch; LBS) as a main circuit breaker. The cubicle 10B is used in a small-scale configuration of, for example, less than 300 kVA. In the description of the monitoring system 1B, the same components as those in the monitoring system 1 may be denoted by the same reference numerals and description thereof may be omitted.

[0034] The cubicle 10B, like the cubicle 10A according to the second embodiment, differs from the cubicle 10 in that the smart meter 13 and the control unit 14 are not connected to each other. Like the monitoring system 1A according to the second embodiment, the smart meter 13 is provided, for example, outside the cubicle 10A. In the illustrated example, the smart meter 13 is provided on a utility pole 20. Note that the smart meter 13 may be provided inside the cubicle 10A, and may not be connected to the control unit 14.

[0035] The cubicle 10B differs from the cubicle 10 in that it further includes a plurality of transformers. In the figure, a transformer 121, a transformer 122, and a transformer 123 are shown as examples of the plurality of transformers. The transformers 121 to 123 convert the power of the high-voltage system into the power of the low-voltage system. The transformers 121 to 123 convert the power of the high-voltage system into the power of different systems. The power of the low-voltage system converted by the transformers 121 to 123 is provided to a load such as the air conditioner 40 via the control unit 14. The load included in the monitoring system 1B may include a plurality of loads (not shown) other than the air conditioner 40.

[0036] Meter unit 12B receives low-voltage system power from each of transformers 121 to 123. Meter unit 12B measures the received low-voltage system power. Meter unit 12B outputs the measurement result of the low-voltage system to control unit 14.

[0037] It may be determined in advance whether the meter unit calculates the integrated power based on the power of the high voltage system or the power of the low voltage system. In other words, it may be determined in advance (for example, at the factory shipping stage) whether the cubicle is provided with the meter unit 12 or the meter unit 12B. The meter unit 12 or the meter unit 12B may be distinguished by, for example, predetermined identification information, and the control unit 14 may be configured to be able to identify which meter unit is connected.

[0038] Here, the demand monitoring device and the demand monitoring method according to this embodiment are configured to be able to acquire and transmit demand information to the storage device 30 even in various environments such as the first to third aspects described above. Hereinafter, the demand monitoring device and the demand monitoring method according to this embodiment will be described in detail with reference to Figs. 4 to 7. In the following description, when there is no need to distinguish between the monitoring system 1, the monitoring system 1A, and the monitoring system 1B, they may be simply referred to as the monitoring system 1. Also, when there is no need to distinguish between the cubicle 10, the cubicle 10A, and the cubicle 10B, they may be simply referred to as the cubicle 10.

[0039] 4 is a functional configuration diagram showing an example of the functional configuration of the demand monitoring device according to this embodiment. With reference to the same figure, an example of the functional configuration of the demand monitoring device 50 will be described. The demand monitoring device 50 may be provided as one functional part of the control unit 14 as shown in the figure, or may be provided as a configuration separate and independent from the control unit 14. The demand monitoring device 50 monitors demand information of the power supplied from the cubicle 10.

[0040] The demand monitoring device 50 includes a measurement method acquisition unit 51, a detection unit 52, a calculation unit 53, an output unit 54, and a presentation unit 55. Each of these functional units is realized, for example, by using an electronic circuit. Each functional unit may include a storage unit such as a semiconductor memory or a magnetic hard disk device, as necessary. Each function may be realized by a computer having a CPU (Central Processing Unit) and software. All or a part of each functional unit may be realized by hardware such as an ASIC (Application Specific Integrated Circuit), a PLD (Programmable Logic Device), or an FPGA (Field-Programmable Gate Array). All or a part of each functional unit may be realized by a combination of software and hardware.

[0041] The measurement method acquisition unit 51 acquires information indicating whether the demand information is measured by any one of a plurality of predetermined measurement methods of demand information. The predetermined measurement methods of the plurality of predetermined demand information may include, for example, a first method, a second method, and a third method. Note that the measurement method according to this embodiment is not limited to an example of using these three methods, and may be two or more methods. Also, it may be four or more methods.

[0042] The first method is a method of measuring demand information based on information acquired from the smart meter 13. The first method is, in other words, a method of controlling demand information from the integrated power and time of the smart meter 13. According to the first method, since data referred to by the power company is used, it can be said that the first method has high accuracy in both measurement accuracy and time accuracy. The first method is used in the monitoring system 1 according to the first aspect described with reference to FIG. 1, for example.

[0043] The second method is a method of measuring demand information based on information acquired from a high-voltage system. The second method is, in other words, a method of controlling demand information from integrated power measured by a high-voltage multimeter MM1 capable of measuring a high-voltage system. According to the second method, since the same points as those measured by the smart meter 13 are measured, it can be said that the measurement accuracy is high. However, since the demand monitoring device 50 independently counts the time, it can be said that the accuracy is lower compared to the first method. The second method is used in the monitoring system 1A according to the second aspect described with reference to FIG. 2, for example.

[0044] The third method is a method of measuring demand information based on information acquired from a low-voltage system. The third method is a method of controlling demand information from the sum of integrated power measured by a low-voltage multimeter MM2 capable of measuring a low-voltage system and the time. According to the third method, the measurement is performed by the sum of the measured values ​​of each low-voltage system, and since the measurement is performed at a location different from the location measured by the smart meter 13, it can be said that the measurement accuracy is lower than that of the first method and the second method. In addition, since the demand monitoring device 50 independently counts the time, it can be said that the accuracy is lower than that of the first method. The third method is used in the monitoring system 1B according to the third aspect described with reference to FIG. 3, for example.

[0045] The measurement method acquisition unit 51 may acquire information on the type of measurement method of the demand information from a hardware switch that allows the user to select the measurement method of the demand information. An example of the hardware switch is a DIPSW (Dip Switch). The acquisition of information on the type of measurement method is not limited to the example of using a hardware switch such as a DIPSW, and may be performed, for example, by software control. The software control may be, for example, a method of providing a setting process on firmware that drives a microcomputer (not shown) included in the demand monitoring device 50 and setting the measurement method.

[0046] Furthermore, the measurement method acquisition unit 51 may acquire the measurement method by detecting the connection state or the like of a measurement device (such as the smart meter 13 or the meter unit 12) connected to the detection unit 52 described later. In this case, the measurement method acquisition unit 51 may acquire the measurement method based on a priority described later.

[0047] The detection unit 52 acquires information used to calculate the demand information according to the type of the measurement method acquired by the measurement method acquisition unit 51. Specifically, when the demand information is measured by the first method, the detection unit 52 acquires information on the integrated power and time from the smart meter 13. When the demand information is measured by the second method, the detection unit 52 acquires information on the integrated power from the high-voltage multimeter MM1 that monitors the high-voltage system. When the demand information is measured by the third method, the detection unit 52 acquires information on the integrated power from each of the multiple low-voltage multimeters MM2 that monitor the multiple low-voltage systems branched off from the high-voltage system. That is, it can also be said that the detection unit 52 acquires information used in the measurement method of the demand information indicated by the information acquired by the measurement method acquisition unit 51.

[0048] In the illustrated example, the smart meter 13, the meter unit 12, and the meter unit 12B are all shown, but it is sufficient that at least one of the smart meter 13, the meter unit 12, and the meter unit 12B is connected to the detection unit 52.

[0049] The calculation unit 53 calculates the demand information based on the information acquired by the detection unit 52. The calculation unit 53 calculates the demand information by a measurement method of the demand information based on the information acquired by the measurement method acquisition unit 51. Specifically, when the demand information is measured by the first method, the calculation unit 53 calculates the demand information based on the integrated power and time acquired by the detection unit 52. When the demand information is measured by the second method, the calculation unit 53 calculates the demand information based on the integrated power acquired by the detection unit 52 and time information counted independently. When the demand information is measured by the third method, the calculation unit 53 calculates the demand information based on the sum of the integrated power of each low-voltage system acquired by the detection unit 52 and time information counted independently.

[0050] Here, the first, second, and third methods have different measurement accuracy and time accuracy, respectively. Therefore, when the demand information can be calculated by any of the methods, the demand monitoring device 50 calculates the demand information by any of the measurement methods based on a predetermined priority.

[0051] Specifically, when information on integrated power has been acquired by the detection unit 52 from the high-voltage multimeter MM1 that monitors the high-voltage system, and information on integrated power and time has been acquired from the smart meter 13, the calculation unit 53 calculates demand information using the first method (rather than the second method). That is, among the first, second, and third methods, the calculation using the first method has the highest priority. The calculation using the second method has the next highest priority, and the calculation using the third method has the lowest priority. That is, the priorities are determined in advance in order of increasing accuracy.

[0052] The output unit 54 outputs the demand information obtained by the calculation performed by the calculation unit 53 to the storage device 30. The demand information output by the output unit 54 may be associated with information on the type of measurement method of the demand information indicated by the information acquired by the measurement method acquisition unit 51. Since the measurement accuracy or time accuracy differs depending on the measurement method, the output unit 54 outputs the demand information in association with information on the type of measurement method, so that when processing information from multiple cubicles 10 included in the monitoring system 1, it becomes possible to distinguish between information with high accuracy and information with low accuracy.

[0053] The presentation unit 55 presents information on the type of measurement method of the demand information indicated by the information acquired by the measurement method acquisition unit 51. The presentation unit 55 may be a display unit that displays various information according to control from a control unit (not shown). The presentation unit 55 may include a display device such as a liquid crystal display, an organic EL (Electroluminescence) display, or a light emitting diode (LED).

[0054] Fig. 5 is a diagram showing an example of a specific aspect of the presenting unit according to this embodiment. With reference to the same figure, an example of a specific aspect of the presenting unit 55 will be described. In the illustrated example, the presenting unit 55 presents information on the type of measurement method using a plurality of light-emitting diodes. Fig. 5(A) shows the presenting unit 55 in a power-off state. Fig. 5(B) shows the presenting unit 55 in a power-on state.

[0055] The presentation unit 55 includes a smart meter connection display unit 551, a high-voltage system connection display unit 552, and a low-voltage system connection display unit 553. The smart meter connection display unit 551, the high-voltage system connection display unit 552, and the low-voltage system connection display unit 553 are each an independent light-emitting diode.

[0056] When the smart meter 13 is connected to the control unit 14, the smart meter connection display unit 551 lights up (or flashes). In this case, it indicates that the demand information is calculated by the first method.

[0057] Furthermore, when the smart meter 13 is not connected to the control unit 14 and the measurement results of the high-voltage system are input to the control unit 14, the high-voltage system connection display unit 552 lights up (or blinks). In this case, it indicates that the demand information is calculated by the second method.

[0058] Furthermore, when the smart meter 13 is not connected to the control unit 14 and the measurement results of the low-voltage system are input to the control unit 14, the low-voltage system connection display unit 553 lights up (or blinks). In this case, it is indicated that the demand information is calculated by the third method.

[0059] 5B shows a case where the smart meter 13 is connected to the control unit 14. In the above description, an example where any one of the light-emitting diodes is exclusively turned on (or blinks) is illustrated, but the present invention is not limited to this example. For example, when the smart meter 13 is connected to the control unit 14 and the measurement result of the high-voltage system is input to the control unit 14, the presentation unit 55 may turn on (or blink) both the smart meter connection display unit 551 and the high-voltage system connection display unit 552. In this case, it is shown that the demand information is calculated by the first method according to a predetermined priority order.

[0060] Furthermore, the presentation unit 55 may directly indicate that the calculation of the demand information is performed by any one of the first method, the second method, and the third method.

[0061] 6 is a flowchart showing an example of the process flow of the demand monitoring method according to the present embodiment, which will be described with reference to the drawing.

[0062] (Step S11) First, the demand monitoring device 50 judges whether or not information has been acquired from the smart meter 13. If information has been acquired from the smart meter 13 (i.e., step S11; YES), the demand monitoring device 50 advances the process to step S12. If information has not been acquired from the smart meter 13 (i.e., step S11; NO), the demand monitoring device 50 advances the process to step S13.

[0063] (Step S12) When the demand monitoring device 50 acquires information from the smart meter 13, the demand monitoring device 50 performs demand control based on the integrated power and time of the smart meter. That is, in this case, the demand monitoring device 50 calculates the demand information by the first method.

[0064] (Step S13) Next, the demand monitoring device 50 judges whether or not the high-voltage system measurement value has been acquired from the meter unit 12. If the high-voltage system measurement value has been acquired from the meter unit 12 (i.e., step S13; YES), the demand monitoring device 50 advances the process to step S14. If the high-voltage system measurement value has not been acquired from the meter unit 12 (i.e., step S13; NO), the demand monitoring device 50 advances the process to step S15.

[0065] (Step S14) When the demand monitoring device 50 acquires the high-voltage system measurement value from the meter unit 12, the demand monitoring device 50 performs demand control based on the integrated power of the high-voltage multimeter MM1 that measures the high-voltage system. That is, in this case, the demand monitoring device 50 calculates the demand information by the second method.

[0066] (Step S15) When the demand monitoring device 50 has not acquired the high-voltage system measurement value from the meter unit 12, the demand monitoring device 50 performs demand control based on the integrated power of the low-voltage multimeter MM2 that measures the low-voltage system. That is, in this case, the demand monitoring device 50 calculates the demand information by the third method.

[0067] FIG. 7 is a block diagram showing an example of the internal configuration of the demand monitoring device according to this embodiment. At least some of the functions of the demand monitoring device 50 can be realized using a computer. As shown in the figure, the computer includes a central processing unit 901, a RAM 902, an input / output port 903, input / output devices 904 and 905, and a bus 906. The computer itself can be realized using existing technology. The central processing unit 901 executes instructions included in a program read from the RAM 902 or the like. The central processing unit 901 writes data to the RAM 902, reads data from the RAM 902, and performs arithmetic and logical operations according to each instruction. The RAM 902 stores data and programs. Each element included in the RAM 902 has an address and can be accessed using the address. Note that RAM is an abbreviation for "random access memory." The input / output port 903 is a port through which the central processing unit 901 exchanges data with an external input / output device or the like. The input / output devices 904 and 905 are input / output devices. The input / output devices 904 and 905 exchange data with the central processing unit 901 via the input / output port 903. The bus 906 is a common communication path used inside the computer. For example, the central processing unit 901 reads and writes data from the RAM 902 via the bus 906. Also, for example, the central processing unit 901 accesses the input / output port via the bus 906. Also, all or part of each functional unit provided in the demand monitoring device 50 may be realized using hardware such as an ASIC, a PLD, or an FPGA. Also, all or part of each functional unit may be realized by a combination of software and hardware.

[0068] [Summary of the embodiment] According to the above-mentioned embodiment, the demand monitoring device 50 monitors the demand information of the power supplied from the cubicle 10. The demand monitoring device 50 includes the measurement method acquisition unit 51 to acquire information indicating which of a plurality of predetermined types of demand information measurement methods is used to measure the demand information, the detection unit 52 to acquire information used in the measurement method of the demand information indicated by the information acquired by the measurement method acquisition unit 51, the calculation unit 53 to calculate the demand information based on the information acquired by the detection unit 52 by the measurement method of the demand information based on the information acquired by the measurement method acquisition unit 51, and the output unit 54 to output the demand information obtained by the calculation. The measurement method according to this embodiment includes a first method of measuring the demand information based on the information acquired from the smart meter and a second method of measuring the demand information based on the information acquired from the high-voltage system. That is, according to the demand monitoring device 50 according to this embodiment, the demand information can be acquired according to different output values ​​depending on the connected meter. Therefore, according to this embodiment, it is possible to acquire demand information in accordance with the obtainable information.

[0069] Furthermore, according to the above-described embodiment, when measuring demand information in the first method, the detection unit 52 acquires information related to the integrated power and time from the smart meter 13, and the calculation unit 53 calculates the demand information based on the integrated power and time acquired by the detection unit 52. That is, when measuring demand information in the first method, the demand information is measured based on information from the smart meter 13. Therefore, according to the present embodiment, it is possible to acquire highly accurate demand information in terms of both measurement accuracy and time accuracy.

[0070] Also, according to the above-mentioned embodiment, when the demand information is measured in the second method, the detection unit 52 acquires information on the integrated power from the high-voltage multimeter MM1 that monitors the high-voltage system, and the calculation unit 53 calculates the demand information based on the integrated power acquired by the detection unit 52 and the time information that is counted independently. That is, when the demand information is measured in the second method, the demand information is measured based on the measurement results of the high-voltage system. Therefore, according to this embodiment, although the time accuracy is inferior to that of the first method, it is possible to acquire demand information with high measurement accuracy.

[0071] Furthermore, according to the embodiment described above, when information about integrated power has been acquired by the detection unit 52 from the high-voltage multimeter MM1 that monitors the high-voltage system, and when information about integrated power and time has been acquired from the smart meter 13, the calculation unit 53 calculates demand information by the first method. That is, when the calculation unit 53 can calculate demand information by both the first method and the second method, the calculation unit 53 calculates demand information by the first method, which has high accuracy in both measurement accuracy and time accuracy. Therefore, according to the present embodiment, it is possible to acquire demand information with high accuracy in both measurement accuracy and time accuracy.

[0072] According to the above-described embodiment, the measurement method further includes a third method of measuring the demand information based on the information acquired from the low-voltage system. Therefore, according to the present embodiment, even if the measurement result of the high-voltage system cannot be obtained, the demand information can be calculated based on the measurement result of the low-voltage system.

[0073] Furthermore, according to the above-described embodiment, when demand information is measured in the third method, the detection unit 52 acquires information about integrated power from each of the multiple low-voltage multimeters MM2 monitoring the multiple low-voltage systems branched off from the high-voltage system, and the calculation unit 53 calculates the demand information based on the sum of the integrated power of each low-voltage system acquired by the detection unit 52 and the time information counted independently. Therefore, according to this embodiment, even if the measurement result of the high-voltage system cannot be obtained, the demand information can be calculated based on the measurement result of the low-voltage system.

[0074] According to the above-described embodiment, the calculation unit 53 calculates the demand information by one of the types of measurement methods based on a predetermined priority, and among the first, second, and third methods, the calculation by the first method has the highest priority, the calculation by the second method has the next highest priority, and the calculation by the third method has the lowest priority. Here, among the first, second, and third methods, the first method has the highest accuracy, the second method has the next highest accuracy, and the third method has the lowest accuracy. Therefore, according to this embodiment, the measurement methods are determined in order of accuracy, so that highly accurate demand information can be obtained according to the connected instrument.

[0075] According to the embodiment described above, the demand monitoring device 50 further includes the presentation unit 55, which presents information on the type of measurement method of the demand information indicated by the information acquired by the measurement method acquisition unit 51. Therefore, a worker inspecting the cubicle 10 or the like can confirm by checking the information presented by the presentation unit 55 which measurement method is used to calculate the demand information.

[0076] Moreover, according to the embodiment described above, the demand information output by the output unit 54 is associated with information on the type of the measurement method of the demand information indicated by the information acquired by the measurement method acquisition unit 51. Therefore, according to the embodiment, when processing information from a plurality of cubicles 10 included in the monitoring system 1, it is possible to handle information with high accuracy and information with low accuracy by distinguishing between them.

[0077] According to the above-described embodiment, the measurement method acquisition unit 51 acquires information on the type of the measurement method of the demand information from a hardware switch that allows the user to select the measurement method of the demand information. The hardware switch is, for example, a DIP switch. Therefore, according to the present embodiment, it is possible to easily select the measurement method.

[0078] Although the present invention has been described above using the embodiments, the present invention is not limited to these embodiments, and various modifications and substitutions can be made without departing from the spirit of the present invention. In addition, the configurations described in the above-mentioned embodiments and examples may be combined. [Explanation of symbols]

[0079] 1...monitoring system, 10...cubicle, 11...VCT, 12...meter unit, 13...smart meter, 14...control unit, 15...EMS, 20...utility pole, 30...storage device, 40...air conditioning device, 50...demand monitoring device, 51...measurement method acquisition unit, 52...detection unit, 53...calculation unit, 54...output unit, 55...presentation unit

Claims

1. A demand monitoring device that monitors demand information of power supplied from a cubicle, a measurement method acquisition unit that acquires information indicating whether the demand information is measured by any one of a plurality of predetermined types of measurement methods of the demand information; a detection unit that acquires information used in a measurement method of the demand information indicated by the information acquired by the measurement method acquisition unit; a calculation unit that calculates the demand information based on the information acquired by the detection unit and a measurement method of the demand information based on the information acquired by the measurement method acquisition unit; an output unit that outputs the demand information obtained by the calculation, The measurement method includes a first method of measuring the demand information based on information acquired from a smart meter, and a second method of measuring the demand information based on information acquired from a high-voltage system. Demand monitoring device.

2. When measuring the demand information in the first method, the detection unit acquires information related to integrated power and time from the smart meter, When the demand information is measured in the first method, the calculation unit calculates the demand information based on the integrated power and time acquired by the detection unit. The demand monitoring device according to claim 1 .

3. When measuring the demand information in the second method, the detection unit acquires information about integrated power from a high-voltage multimeter that monitors the high-voltage system, When the demand information is measured in the second method, the calculation unit calculates the demand information based on the integrated power acquired by the detection unit and time information that is independently counted. The demand monitoring device according to claim 1 .

4. The calculation unit calculates the demand information by the first method when information on integrated power is acquired from a high-voltage multimeter that monitors the high-voltage system by the detection unit and information on integrated power and time is acquired from the smart meter. The demand monitoring device according to any one of claims 1 to 3.

5. The measurement method further includes a third method of measuring the demand information based on information acquired from a low-voltage system. The demand monitoring device according to any one of claims 1 to 3.

6. When measuring the demand information in the third method, the detection unit acquires information about integrated power from each of a plurality of low-voltage multimeters that monitor a plurality of low-voltage systems branched off from the high-voltage system; When the demand information is measured in the third method, the calculation unit calculates the demand information based on the sum of the integrated power of each of the low-voltage systems acquired by the detection unit and time information that is independently counted. The demand monitoring device according to claim 5.

7. The calculation unit calculates the demand information by any one of the types of the measurement methods based on a predetermined priority, Among the first method, the second method, and the third method, the calculation by the first method has the highest priority, the calculation by the second method has the next highest priority, and the calculation by the third method has the lowest priority. The demand monitoring device according to claim 5.

8. a presentation unit that presents information on a type of the measurement method of the demand information indicated by the information acquired by the measurement method acquisition unit. The demand monitoring device according to any one of claims 1 to 3.

9. The demand information output by the output unit is associated with information on the type of the measurement method of the demand information indicated by the information acquired by the measurement method acquisition unit. The demand monitoring device according to any one of claims 1 to 3.

10. The measurement method acquisition unit acquires information regarding the type of the measurement method of the demand information from a hardware switch that allows a user to select the measurement method of the demand information. The demand monitoring device according to any one of claims 1 to 3.

11. A demand monitoring method for monitoring demand information of power supplied from a cubicle, comprising: a measurement method acquiring step of acquiring information indicating whether the demand information is measured by any one of a plurality of predetermined types of measurement methods of the demand information; a detection step of acquiring information used in a measurement method of the demand information indicated by the information acquired by the measurement method acquisition step; a calculation step of calculating the demand information based on the information acquired by the detection step and the measurement method of the demand information based on the information acquired by the measurement method acquisition step; and an output step of outputting the demand information obtained by the calculation, The measurement method includes a first method of measuring the demand information based on information acquired from a smart meter, and a second method of measuring the demand information based on information acquired from a high-voltage system. Demand monitoring method.

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