TWI514303B - Management device and management system - Google Patents

Description

Management device and management system

The present invention relates to a management apparatus for managing use of media supplied from a supply company at a user terminal, and a management system using the management apparatus.

In the related art, a system for measuring the amount of power used at the user's end is known (see, for example, Japanese Patent Laid-Open No. 2009-130983 (hereinafter referred to as "Patent Document 1"). The system described in Patent Document 1 measures the transmission through the trunk. The amount of mains power supplied by the master breaker and the amount of divergence power supplied through the respective breakers are used as the amount of electric power used at the user terminal, and the amount of electric power as a result of the measurement is displayed on the display device.

On the other hand, in order to collect the electricity fee from the user terminal, the power company sets a power meter separately provided from the above system for measuring the power usage amount at the user terminal.

Further, in recent years, a technique capable of communicating between a system described in Patent Document 1 and a power meter has been developed. Thereby, the above system can obtain the measured value of the power meter.

However, there is a case in which the measurement values of the power usage amount do not match between the above system and the power meter due to the measurement accuracy of the conventional system and the power meter described in Patent Document 1. That is, because it is on Since the measurement accuracy between the conventional system and the power meter is different, even if the system uses the same amount of power as the power meter, the measured value shift occurs between the system and the power meter. Therefore, when the conventional system described in Patent Document 1 displays the measured value of the own system and the measured value of the power meter on the display device, there is a problem that the user who displays the content may be confused.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a management apparatus capable of reducing user confusion and a management system using the same.

The management device of the present invention is used together with the meter and the measurement unit to manage the use of the media at the user end, and the meter measures the total usage of the media supplied from the supply company at the user end and uses the total usage. The amount is transmitted to the high-order device, and the measurement unit measures the total usage amount on the load side based on the meter, wherein the management device includes an acquisition unit that acquires a measurement value of the measurement unit from the measurement unit; a unit that communicates with the counter and receives the measured value of the counter from the counter; and a correction unit that corrects at least one of the first value and the second value in order to match the first value with the second value. The first value is obtained by using the measured value obtained by the acquisition unit as an initial value, the second value is obtained by using the measured value received by the communication unit as an initial value, and the output unit is outputted by the correction unit. The first value described above.

In the management device, it is preferable that the correction unit replaces the first value with an initial value of the second value, thereby matching the first value with the second value.

In the management device, it is preferable that the acquisition unit acquires a measurement value of the second measurement unit from the second measurement unit for each of the branch circuits that are branched from the distribution board of the user terminal, and the second measurement unit The measurement unit measures the amount of use of the load connected to the branch circuit, and the correction unit matches the correction amount associated with the first value and the second value with respect to the total usage amount for each of the branch circuits. The third value obtained by using the measurement value of the second measurement unit acquired by the acquisition unit as an initial value is corrected, and the output unit outputs the third value corrected by the correction unit for each of the branch circuits.

In the management device, it is preferable that a ratio of the initial value of the second value to the initial value of the first value is the correction amount, and the correction unit sets the third value for each of the branch circuits The product of the initial value of the third value and the correction amount is corrected.

In the management device, it is preferable that the output unit displays the value corrected by the correction unit on the display device.

In the management device, it is preferable that the abnormality determining unit includes a ratio of an absolute value of a difference between the measured value obtained by the acquiring unit and the measured value received by the communication unit to a predetermined threshold value. When it is still large, it is judged that it is abnormal, and the said output part outputs the determination result of the said abnormality determination part.

In the management device, it is preferable that the output unit displays the determination result of the abnormality determining unit on the display device.

In the management device, it is preferable that the medium is electric power.

The management system of the present invention includes: the aforementioned management device; and display A display device for correcting the value of the correction unit.

The management system of the present invention includes: the management device; and a display device that displays the determination result of the abnormality determining unit.

According to the management apparatus and management system of the present invention, it is possible to reduce the confusion caused by the user having different values of the usage amount of the user terminal.

1‧‧‧Management device

2‧‧‧Power Meter

3‧‧‧Measurement device

4‧‧‧ display device

5‧‧‧Distribution tray

6‧‧‧Loading machine

7‧‧‧ Client

8‧‧‧Power Company

11‧‧‧Acquisition Department

12‧‧‧Communication Department

13‧‧‧Amendment

14‧‧‧Output Department

15‧‧‧Abnormal Judgment Department

21‧‧‧Communication unit

22‧‧‧Measurement unit

23‧‧‧Power Measurement Department

24‧‧‧ Relay

25‧‧‧Communication Department

26‧‧‧Control Department

31‧‧‧First Measurement Department

32‧‧‧2nd Measurement Department

33‧‧‧Control Department

51‧‧‧Main Circuit Breaker

52‧‧‧Differential circuit breaker

81‧‧‧High-end devices

91‧‧‧HEMS Network

92‧‧‧Communication network

93‧‧‧Distribution line

94‧‧‧Communication Road

P1‧‧‧Measurement of the first measurement department

P2‧‧‧Measurement value of electric meter

Fig. 1 is a block diagram showing the configuration of a management system of an embodiment.

Fig. 2 is a schematic view showing the entire embodiment.

In the present embodiment, as shown in FIG. 1, the management device 1 for managing the power usage at the user terminal 7 is used together with the power meter 2 and the measurement device 3. Electricity is the media that is supplied from the supply company, that is, resources. The power meter 2 is equivalent to a meter that measures the total usage of the media supplied from the supply company at the user terminal and transmits the total usage amount to the high-order device. The display device 4 is connected to the management device 1. Further, the customer terminal 7 is provided with a distribution board 5, and a plurality of load devices 6 are connected to the distribution board 5. In the present embodiment, the management system, the power meter 2, the measuring device 3, the display device 4, and the distribution board 5 constitute a management system. Further, the management device 1 and the plurality of load devices 6 construct an HEMS (Home Energy Management System) network 91 (see FIG. 2) as a network on the side of the client side 7. Further, in the present embodiment, the case where the user terminal 7 is a single-family house is described. However, the client terminal 7 is not limited to a single-family house, and may be, for example, a resident of a house, a firm, a factory, or the like.

The load device 6 is an electric device that operates by consuming electric power. Examples of the load device 6 include an air conditioner, a lighting device, a device such as a home information panel, and a home appliance such as a television or a refrigerator. The load machine 6 is equivalent to a load connected to a branch circuit.

In the management device 1 of the present embodiment, the measurement value of the power meter 2 is received from the power meter 2 by communication, and the measurement value of the first measurement unit 31, which will be described later, is acquired from the measurement device 3, and the measurement by the first measurement unit 31 is performed. The value is corrected in such a manner that the value of the power meter 2 matches, and the corrected value is output. Hereinafter, the management device 1, the power meter 2, the measurement device 3, the display device 4, and the distribution board 5 will be described in detail.

First, the power meter 2 will be described. The power meter 2 is a smart meter having a so-called electronic power meter having a communication function. The power meter 2 is installed in the user terminal 7 in order to collect the electricity fee from the power company 8, and measures the total power usage amount of the power supplied from the power company 8 (refer to FIG. 2) at the user terminal, and will include the above total power usage. The amount of gauge examination information is sent to the high-order device 81 (refer to FIG. 2). The power company 8 series is equivalent to a resource supply company, that is, a supply company. The power meter 2 includes a communication unit 21 having a communication function for communicating with another device, and a measurement unit 22 having a measurement function for measuring the amount of power used. The communication unit 21 and the high-order device 81 of the power company 8 construct a communication network 92 for performing remote meter verification on the amount of power usage acquired at the communication unit 21.

In the communication network 92 shown in FIG. 2, a plurality of communication units 21 and high-order devices 81 transmit and receive wireless signals by multihop. The multipoint transmission system communication unit 21 can communicate with a host (not shown) by using another communication unit 21 for relaying communication. That is, in the communication network 92, communication can be directly or indirectly communicated between the communication units 21 and the host, and the communication unit 21 that cannot directly communicate with the host enables other communication at a distance capable of communication. Unit 21 relays the communication packets in sequence, thereby communicating with the host. In the case of the communication unit 21 that is not in direct communication with the host, the communication path between the communication unit 21 and the host is determined from a plurality of candidates in consideration of the communication quality between the communication units 21 that perform direct communication.

The high-order device 81 is, for example, a power company 8 or a management server operated by a service providing company commissioned by the power company 8. The high-order device 81 centralizes the instrument inspection information of each user terminal 7. Further, the high-order device 81 can acquire not only the meter inspection information but also information other than the meter inspection information from each communication unit 21.

The measurement unit 22 shown in FIG. 1 includes a power amount measuring unit 23 that measures the total power usage amount at the user terminal 7 and is inserted into the power distribution line 93 from the power company 8 (refer to FIG. 2) to the user terminal 7. It acts as a relay 24 for the shutter. The electric power amount measuring unit 23 is inserted into the electric power distribution line 93 from the electric power company 8 to the customer terminal 7, and calculates the instantaneous value of the voltage and current to obtain the amount of electric power supplied from the electric power company 8 to the user terminal 7 side, that is, The total power usage at the subscriber end 7. In other words, the electric energy amount measuring unit 23 obtains the used electric power by integrating the instantaneous value of the voltage and the instantaneous value of the electric current, and obtains the electric power usage for each predetermined time (for example, 30 minutes) by accumulating the obtained electric power. Quantity, and the obtained power usage is output as a result of the meter test. The control unit 26 of the letter unit 21. Further, the power distribution line 93 in the measurement unit 22 is a transformer (not shown) connected to the utility pole on the supply side, and is connected to the distribution board 5 on the user side. The relay 24 opens and closes the distribution line 93 from the electric power company 8 to the user terminal 7 side in accordance with an instruction from the high-order device 81 of the electric power company 8, for example.

The communication unit 21 includes a communication unit 25 that communicates with the management device 1 and a control unit 26 that controls each unit of the power meter 2. Further, although not shown, the communication unit 21 includes a second communication unit that performs wireless communication with another communication unit 21, and a third communication that performs wireless communication with a maintenance terminal (not shown) for on-road instrument inspection. unit. The communication unit 25 transmits various pieces of information including the meter inspection information to the management device 1 or receives information of the management device 1 from the management device 1. The second communication unit transmits the meter verification information to the other communication unit 21 or relays the meter verification information from the other communication unit 21. The third communication unit transmits the meter inspection information to the maintenance terminal when performing on-line meter inspection.

The communication unit 21 acquires the meter inspection result of the measurement unit 22 every predetermined time (for example, 30 minutes). The communication unit 21 transmits the meter inspection result obtained from the measurement unit 22, that is, the power usage amount of the user terminal 7 to the high-order device 81 of the electric power company 8 as the meter inspection information. The meter verification information is transmitted to the high-order device 81 either directly or via the high-order side communication unit 21 and by multipoint transmission communication.

The management device 1 and the communication unit 21 communicate using a communication path 94 that does not belong to one of the HEMS network 91 (refer to FIG. 2) and the communication network 92 (refer to FIG. 2). Between the management device 1 and the communication unit 21, The amount of power usage acquired by the line communication unit 21, the reduction target of the power usage amount notified to the communication unit 21 from the high-order device 81, and the communication between the management device 1 and the information shared by the communication unit 21 are communicated. In addition, the communication path 94 may be either a wireless communication path or a wired communication path. In the case where the wired communication channel is used in the communication path 94, it is preferable to perform power line communication (PLC: Power Line Communications) in which the power distribution line 93 that supplies power to the user terminal 7 is also used as the communication path 94.

The wireless channel used for wireless communication is set in plural in a frequency band of a predetermined range, and the communication unit 21 performs wireless communication using at least one of the wireless channels. In the case where the management device 1 and the communication unit 21 perform wireless communication, the wireless channel employed in the wireless communication between the management device 1 and the communication unit 21 may be either a wireless channel employed in the HEMS network 91 or One of the wireless channels employed in the communication network 92 is the same or different from the two.

Next, the distribution board 5 will be described. The distribution board 5 distributes AC power to the load machine 6 of the client terminal 7. The distribution board 5 includes a main breaker 51 and a plurality of branch breakers 52. The trunk circuit breaker 51 is inserted into a trunk circuit for outputting AC power from the power company 8 (refer to FIG. 2) to each of the branch breakers 52. The branch breaker 52 is inserted into the branch circuit of the future load of the autonomous dry circuit breaker 51 to the load machine 6.

Next, the measurement device 3 will be described. The measurement device 3 includes a first measurement unit (measurement unit) 31 that measures the total power usage amount of the user terminal 7 with the power meter 2, and a control unit that controls the entire measurement device 3 33. The first measuring unit 31 uses a current transformer that detects a current flowing to the trunk circuit on the input side of the trunk circuit breaker 51 to measure the total power usage amount at the user terminal 7. In other words, the first measurement unit 31 measures the total power usage amount in the power distribution line 93 that is pulled from the power meter 2 to the load device 6 side. The control unit 33 outputs the measured value of the first measuring unit 31 to the management device 1. Further, in the example of FIG. 1, the measuring device 3 is provided separately from the distribution board 5, but the measuring device 3 may be integrated with the distribution board 5. Further, the measurement device 3 may be integrated with the management device 1 or may be a different individual.

Next, the management device 1 will be described. The management device 1 manages the amount of power used by the load device 6. The management device 1 includes, for example, a computer (including a microcomputer) including a CPU (Central Processing Unit) and a memory (including a microcomputer) as a main component, and includes an acquisition unit 11, a communication unit 12, a correction unit 13, and an output unit 14. .

The acquisition unit 11 has a dielectric surface for receiving information from the measurement device 3, and the measurement value of the first measurement unit 31 (the total power usage amount at the user terminal 7) is obtained from the measurement device 3. Then, the acquisition unit 11 writes the measured value of the first measurement unit 31 as an initial value of the first value of the total power usage amount, and writes it into a storage unit (not shown) of the management device 1.

The communication unit 12 has an interface that communicates with the power meter 2, and receives meter verification information from the power meter 2 by communication. That is, the communication unit 12 receives the measured value of the power meter 2 from the power meter 2. Then, the communication unit 12 writes the measured value received from the power meter 2 as an initial value of the second value of the total power usage amount, and writes it into a storage unit (not shown) of the management device 1.

The correction unit 13 corrects the measurement value acquired by the acquisition unit 11 in accordance with the measurement value received by the communication unit 12. In other words, the correction unit 13 corrects at least one of the first value and the second value in order to match the first value with the second value. As described above, the first value is a value related to the total power usage amount, and the measured value of the first measurement unit 31 is used as an initial value. The second value is a value related to the total power usage amount, and the measured value of the power meter 2 is used as an initial value. In other words, the correction unit 13 corrects the difference between the measured value of the first measuring unit 31 and the measured value of the power meter 2 for the total power usage amount of the user terminal 7. For example, when the measured value of the first measuring unit 31 does not match the measured value of the power meter 2, the correcting unit 13 replaces the first value of the total power usage amount with the initial value of the second value (measurement of the power meter 2) value). Thereby, when the power meter 2 has a function of directly displaying the measured value of itself, the management device 1 can match the value corrected by the correcting unit 13 with the value displayed on the power meter 2.

The output unit 14 outputs the use information including the total power usage amount to the display device 4 in order to display the total power usage amount corrected by the correction unit 13 on the display device 4. In other words, the output unit 14 outputs the use information including the first value corrected by the correction unit 13 to the display device 4 and displays it on the display device 4.

The display device 4 is, for example, a control viewer that acquires usage information from the output unit 14 of the management device 1 and displays the total power usage amount (first value) included in the usage information. That is, the display device 4 displays the total power usage amount corrected by the correction unit 13. When the measured value of the first measuring unit 31 is replaced with the measured value of the power meter 2, the display can be made The total power usage amount displayed by the device 4 coincides with the total power usage amount displayed by the power meter 2. The control viewer is provided at the client terminal 7, and is a machine that displays the state of the load device 6 of the client terminal 7, and the like.

Further, the measurement device 3 includes a second measurement unit 32 that measures the amount of power used by the load device 6 connected to the branch circuit for each of the branch circuits that are branched from the distribution board 5. The plurality of second measuring units 32 are provided in a one-to-one correspondence with a plurality of branch breakers 52. Each of the second measuring units 32 uses a current transformer that detects a current flowing to a branch circuit on the output side of the corresponding branch circuit breaker 52 to measure the amount of power used depending on the load device 6 connected to the branch circuit. The control unit 33 outputs the measured values of the respective second measuring units 32 to the management device 1.

In the management device 1, the acquisition unit 11 acquires the measured values of the plurality of second measurement units 32 (the amount of power used by each of the branch circuits) from the measurement device 3. Then, the acquisition unit 11 writes the measurement value of the second measurement unit 32 as an initial value of the third value of the power usage amount of the branch circuit to each of the branch circuits, and writes it into a memory unit (not shown) of the management device 1.

The correction unit 13 corrects the amount of power usage of each of the branch circuits acquired by the acquisition unit 11 in accordance with the correction amount for the total power usage amount at the user terminal 7. In other words, the correction unit 13 corrects the third amount of the power usage amount of the branch circuit by matching the correction amount related to the first value and the second value with respect to the total power usage amount of the user terminal 7 for each of the branch circuits. . When the ratio of the initial value of the second value (the measured value of the power meter 2) to the initial value of the first value (the measured value of the first measuring unit 31) is used as the correction amount, the correcting unit 13 will The third value is corrected to the initial value of the third value and the correction The product of the quantity. When the measured value P2 of the power meter 2 is greater than A% of the measured value P1 of the first measuring unit 31 (P2=P1×(100+A)/100), the correction unit 13 is only used. Increase the power usage of each divergent circuit by A%. That is, the correction unit 13 increases the third value by only A% from the initial value for each of the branch circuits. For example, when the measured value P2 of the power meter 2 is 4% larger than the measured value P1 of the first measuring unit 31 (in the case of P1=P2×1.04), the correcting unit 13 only divides each branch circuit. The amount of electricity used has increased by 4%. That is, the correction unit 13 increases the third value by 4% from the initial value for each of the branch circuits.

The output unit 14 outputs the use information including the power usage amount of each of the branch circuits to the display device 4 in order to display the power usage amount of each of the branch circuits corrected by the correction unit 13 on the display device 4. In other words, the output unit 14 outputs the use information including the third value corrected by the correction unit 13 to the display device 4 for each branch circuit and displays it on the display device 4.

Further, the management device 1 further includes an abnormality determining unit 15 that is an absolute value ratio threshold of a difference between the measured value obtained by the acquisition unit 11 and the measured value received by the communication unit 12 in relation to the total power usage amount. It is also judged to be abnormal for a large situation. In other words, when the absolute value of the difference between the measured value of the first measuring unit 31 and the measured value of the power meter 2 is larger than the threshold value, the abnormality determining unit 15 determines that an abnormality has occurred. The threshold value is determined in advance to be a value larger than the measurement variation of the power meter 2 and the measuring device 3. The abnormality determined by the abnormality determining unit 15 is an abnormality of the measuring device 3, an abnormality of the power meter 2, an abnormality of the management device 1, and the like. The output unit 14 outputs the determination result of the abnormality determining unit 15 to the display device 4 And displayed on the display device 4.

Next, the operation of the management system of the present embodiment will be described. First, the power meter 2 measures the total power usage amount at the user terminal 7, and the management device 1 receives the measurement value (total power usage value) of the power meter 2 by communication. The management device 1 acquires the measured value (total power use value) of the first measuring unit 31 and the measured value of the plurality of second measuring units 32 (the amount of used electric power of each branch circuit) from the measuring device 3 . After that, the management device 1 corrects the total power usage amount in order to match the measured value of the first measurement unit 31 with the measured value of the power meter 2 . Further, the management device 1 corrects the measured value of the power usage amount of each of the branch circuits in accordance with the correction amount of the total power usage amount. After that, the management device 1 outputs the use information including the corrected power usage amount (total power usage amount and power usage amount of each branch circuit) to the display device 4. The display device 4 acquires usage information from the management device 1 and displays the amount of power usage included in the usage information.

According to the present embodiment described above, the management device 1 corrects the total power usage amount measured by the first measurement unit 13 and the total power usage amount measured by the power meter 2, and outputs the corrected total. Electricity usage. In other words, the management device 1 corrects at least one of the first value and the second value in order to match the first value and the second value with respect to the total power usage amount of the user terminal 7. Then, the management device 1 outputs the corrected first value. As a result, the management device 1 of the present embodiment can reduce the confusion of the user in comparison with the case where the total power usage amount of the user terminal 7 has a different value. In other words, the management device 1 of the present embodiment is a measurement value (an initial value of the first value) of the first measurement unit 31 and a measurement of the power meter 2 The value (the initial value of the second value) is different, and the user's confusion can be reduced as compared with the case where the measured values of both sides are directly output.

Further, according to the present embodiment, the management device 1 corrects the amount of power usage of each of the branch circuits by adjusting the correction amount with respect to the total power usage amount in the correction unit 13. In other words, the management device 1 of the present embodiment uses the measured value of the second measuring unit 32 as the initial value of the third value of the power usage amount of the branch circuit for each branch circuit, and matches the total power usage amount. The third value is corrected by the correction amount associated with the first value and the second value. As a result, the management device 1 of the present embodiment can match the power usage amount of each of the branch circuits to the total power usage amount, so that there is no contradiction between the total power usage amount and the power usage amount of each of the branch circuits.

According to the present embodiment, the management device 1 displays the value (the total power usage amount and the power usage amount of each of the branch circuits) corrected by the correction unit 13 on the display device 4. As a result, the management device 1 of the present embodiment can reduce the confusion of the user who views the display content, compared to the case where the uncorrected value is displayed on the display device 4.

Further, in the management device 1 of the present embodiment, the abnormality determining unit 15 is a measured value (an initial value of the first value) of the first measuring unit 31 and a measured value of the power meter 2 (an initial value of the second value). The case where the absolute value of the difference is larger than the threshold value is judged to be abnormal. In this way, the management device 1 of the present embodiment sets the threshold value in advance of the value of the measurement accuracy of the power meter 2 and the first measurement unit 31, and thus must be two measurement values of the same value (total) When the power usage amount is different from the above variation, it is possible to detect, for example, the power meter 2 or the first measurement unit 31 (measuring device 3), etc., simply and early. often.

In addition, if the measurement value of the power meter 2 is allowed to be changed, the correction unit 13 may replace the measurement value of the power meter 2 as an example of the correction that matches the measurement value of the first measurement unit 31 with the measurement value of the power meter 2 . The measured value of the first measuring unit 31 is obtained. In other words, the correction unit 13 may match the first value with the second value by replacing the second value with the first value. In other words, the correction unit 13 may change the second value stored in the storage unit (not shown) of the management device 1 to the initial value of the first value stored in the storage unit. Further, as another example of the above correction, the correction unit 13 may use the average value of the measured value of the first measuring unit 31 and the measured value of the power meter 2 as the new total power usage amount. In other words, the correction unit 13 may cause the first value and the second value to match each other by replacing the first value and the second value with an average value of the initial value of the first value and the initial value of the second value. In other words, the correction unit 13 can also change the first value and the second value stored in the memory unit (not shown) of the management device 1 to the average value.

The display device 4 is not limited to the control viewer, and may be a portable information terminal or a television set that communicates with the management device 1. In the case where the display device 4 is a portable information terminal, the management device 1 may transmit the usage information including the corrected power usage amount to the portable information terminal via the network.

In addition, in the present embodiment, the case where the supply company is the electric power company 8 and the medium supplied from the supply company is electric power has been described. However, in addition to the electric power, the medium is even in the form of gas, water, or heat. The same technique as that of the present embodiment can be applied to the case. The user terminal 7 that supplies the media from the supply company is provided with a meter as the usage amount of the measurement medium. Measuring device.

In addition, the measurement device 3 may include the first measurement unit 31 and the plurality of second measurement units 32 integrally, and may include the first measurement unit 31 and the plurality of second measurement units 32 of different individuals. In other words, the measurement device 3 can include the first measurement unit 31 and the plurality of second measurement units 32 in one housing, and can accommodate the first measurement unit 31 and the plurality of second measurement units 32. In the frame.

Although the present invention has been described in its preferred embodiments, the present invention may be practiced in various fields without departing from the spirit and scope of the invention. Amendments and changes.

1‧‧‧Management device

2‧‧‧Power Meter

3‧‧‧Measurement device

4‧‧‧ display device

5‧‧‧Distribution tray

6‧‧‧Loading machine

7‧‧‧ Client

11‧‧‧Acquisition Department

12‧‧‧Communication Department

13‧‧‧Amendment

14‧‧‧Output Department

15‧‧‧Abnormal Judgment Department

21‧‧‧Communication unit

22‧‧‧Measurement unit

23‧‧‧Power Measurement Department

24‧‧‧ Relay

25‧‧‧Communication Department

26‧‧‧Control Department

31‧‧‧First Measurement Department

32‧‧‧2nd Measurement Department

33‧‧‧Control Department

51‧‧‧Main Circuit Breaker

52‧‧‧Differential circuit breaker

93‧‧‧Distribution line

94‧‧‧Communication Road

Claims (10)

A management device is used together with a meter and a measurement unit for managing the use of media at the user end, the meter measuring the total usage of the media supplied from the supply company at the user end and transmitting the total usage amount In the high-order device, the measurement unit measures the total usage amount on the load side based on the meter, and the management device includes an acquisition unit that acquires a measurement value of the measurement unit from the measurement unit, and a communication unit. Communicating with the counter and receiving the measured value of the counter from the counter; the correcting unit correcting at least one of the first value and the second value to match the first value and the second value, the first value The measurement value obtained by the acquisition unit is an initial value, the second value is an initial value obtained by the communication unit, and an output unit is outputted by the correction unit. 1 value. The management device according to claim 1, wherein the correction unit replaces the first value with an initial value of the second value, thereby matching the first value with the second value. The management device according to claim 1 or 2, wherein the acquisition unit acquires the measurement value of the second measurement unit from the second measurement unit for each of the branch circuits that are branched by the distribution board of the user terminal, The second measurement unit measures the amount of use depending on the load connected to the branch circuit; The correction unit corrects the measurement value of the second measurement unit acquired by the acquisition unit by using a correction amount related to the first value and the second value with respect to the total usage amount for each of the branch circuits. The third value is an initial value; the output unit outputs the third value corrected by the correction unit for each of the branch circuits. The management device according to claim 3, wherein a ratio of the initial value of the second value to the initial value of the first value is the correction amount; and the correction unit is configured to perform the third for each of the branch circuits The value is corrected to the product of the aforementioned initial value of the third value and the aforementioned correction amount. The management device according to claim 1 or 2, wherein the output unit displays the value corrected by the correction unit on the display device. The management device according to claim 1 or 2, further comprising: an abnormality determining unit that determines a ratio of an absolute value of a difference between the measured value obtained by the acquiring unit and the measured value received by the communication unit The case where the threshold value is large is determined to be abnormal; and the output unit outputs the determination result of the abnormality determining unit. The management device according to claim 6, wherein the output unit causes the determination result of the abnormality determining unit to be displayed on the display device. The management device according to claim 1 or 2, wherein the medium is electric power. A management system with: The management device is used together with the meter and the measurement unit to manage the use of the media at the user end, and the meter measures the total usage of the media supplied from the supply company at the user end and sends the total usage to the a high-order device that measures the total usage amount on the load side based on the meter; and a display device; the management device includes: an acquisition unit that acquires a measurement value of the measurement unit from the measurement unit; and a communication unit Communicating with the counter and receiving the measured value of the counter from the counter; the correcting unit correcting at least one of the first value and the second value in order to match the first value with the second value, the first value The measurement value obtained by the acquisition unit is an initial value, the second value is an initial value of the measurement value received by the communication unit, and the output unit outputs the first value after the correction unit is corrected. The output unit displays the first value corrected by the correction unit on the display device, and the display device displays the first value after the correction unit is corrected. A management system comprising: a management device, which is used together with a meter and a measurement unit for managing the use of media at the user end, the meter measuring the total usage of the media supplied from the supply company at the user end and The total usage The measurement unit is configured to measure the total usage amount on the load side based on the meter, and the display device; the management device includes: an acquisition unit that acquires a measurement value of the measurement unit from the measurement unit; and a communication unit And communicating with the meter and receiving the measured value of the meter from the meter; the correcting unit correcting at least one of the first value and the second value in order to match the first value with the second value, the first The value is an initial value obtained by using the measured value obtained by the acquisition unit, wherein the second value is an initial value received by the communication unit, and an output unit is outputted by the correction unit. And a value determination unit that determines that the absolute value of the difference between the measured value obtained by the acquisition unit and the measured value received by the communication unit is greater than a predetermined threshold value; The output unit outputs the determination result of the abnormality determining unit, and displays the determination result of the abnormality determining unit on the display device; and the display device displays the abnormality determining unit. The above judgment result.