JP2017005998A - Power management apparatus, power management system, and power management method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To appropriately set allocation of current meters, in a power management apparatus.SOLUTION: A power management apparatus 10 can acquire power information measured by each of a plurality of detectors 19 to 21. The power management apparatus 10 includes a control unit 15. The control unit 15 sets allocation of any of the plurality of detectors 19 to 21 to any of a plurality of measurement target measuring uses. The plurality of detectors 19 to 21 include: a specific detector 21 whose setting can be changed to any of the plurality of measurement target measuring uses; and fixed detectors 19, 20 that are detectors other than the specific detector 21 and are fixed to any of the plurality of measurement target measuring uses, the number of the fixed detectors being larger than the number of the specific detector 21.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a power management apparatus, a power management system, and a power management method for managing currents flowing in devices such as load devices and distributed power sources provided in consumers.

  2. Description of the Related Art In recent years, a technology for controlling a load device and a distributed power source provided in a consumer by a power management device (eg, HEMS: Home Energy Management System) provided for each consumer is known (see Patent Document 1).

JP 2003-309928 A

  The power management apparatus needs to calculate the power consumption of the load device and the generated power of the distributed power source for control. The power management apparatus acquires currents flowing through a plurality of load devices and a distributed power source by using a plurality of ammeters for calculating power. However, a method for assigning current values to be measured by each ammeter has not been defined.

  Therefore, an object of the present invention made in view of such circumstances is to provide a power management apparatus, a power management system, and a power management method in which assignment of each ammeter is appropriately determined.

In order to solve the above-described problems, the power management apparatus according to the first aspect is
A power management device capable of acquiring power information measured by each of a plurality of detectors,
A controller configured to set any one of the plurality of detectors to any one of a plurality of measurement objects;
The plurality of detectors are:
A specific detector that can be set to any of the measurement applications of the plurality of measurement objects;
A detector other than the specific detector, the detector being fixed to one of the measurement applications of the plurality of measurement objects, and having a fixed detector larger than the number of the specific detectors. It is characterized by.

The power management device according to the second aspect is
In the control unit, it is possible to change the setting of whether the allocation of the specific detector is determined as one set for measurement of single-phase three-wires of the power generation device or as individual measurement targets. It is what.

The power management device according to the third aspect is
The control unit attaches information for identifying a currently set measurement target to the measurement value of the specific detector and outputs the measurement value to the outside.

The power management device according to the fourth aspect is
The control unit allocates the fixed detector to a distribution board main use and a distribution board support use, and is assigned to the distribution board main use and the distribution board support use. The power consumption in the main of the said distribution board and the branch of the said distribution board is acquired from a detector.

The power management device according to the fifth aspect is
The allocation of the specific detector includes a specific load device.

The power management device according to the sixth aspect is
The allocation of the specific detector is set to a power generation device or a specific load device.

The power management device according to the seventh aspect is
The detector is built-in.

The power management system according to the eighth aspect is
A power management system including a power management apparatus capable of acquiring power information measured by each of a plurality of detectors, and a communication terminal capable of communicating with the power management apparatus and displaying a screen based on the power information,
The power management device includes:
A controller configured to set any one of the plurality of detectors to any one of a plurality of measurement objects;
The plurality of detectors are:
A specific detector that can be set to any of the measurement applications of the plurality of measurement objects;
A detector other than the specific detector, which is fixed to one of the measurement applications of the plurality of measurement objects, and has a fixed detector larger than the number of the specific detectors. ,
The communication terminal is
The measurement values of the plurality of detectors are received from the power management apparatus, and the power information of the measurement target is displayed based on the received measurement values.

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

In addition, a power management method that realizes the ninth aspect of the present invention as a method,
A power management method in a power management system comprising: a power management device capable of acquiring power information measured by each of a plurality of detectors; and a communication terminal capable of communicating with the power management device and displaying a screen based on the power information. There,
A first step in which the power management apparatus sets any one of the plurality of detectors to any one of a plurality of measurement target measurement applications;
A second step in which the communication terminal receives measurement values of the plurality of detectors from the power management device;
The communication terminal has a third step of displaying power information of a measurement object based on the received measurement value;
In the first step, the plurality of detectors are a specific detector that can be set to any one of the measurement applications of the plurality of measurement objects, and a detector other than the specific detector, A fixed detector that is fixed in any of a plurality of measurement object measurement applications, and has more fixed detectors than the number of the specific detectors.
It is characterized by that.

  According to the power management device, the power management system, and the power management method according to the present invention configured as described above, it is possible to appropriately set the allocation of each ammeter.

It is a functional block diagram which shows schematic structure of the power management apparatus which concerns on one Embodiment of this invention. It is a communication system figure which shows schematic structure of a 1st power management system. It is a communication system figure which shows schematic structure of a 2nd power management system. It is a communication system figure which shows schematic structure of a 3rd power management system.

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

  FIG. 1 is a functional block diagram showing an internal configuration of a power management apparatus according to an embodiment of the present invention. The power management apparatus 10 includes a first communication I / F (Inter Face) 11, a second communication I / F 12, a third communication I / F 13, a fourth communication I / F 14, and a control unit 15. Composed.

  The first communication I / F 11 is a communication I / F that uses the first standard for the lower layer including the physical layer of the communication protocol and the first protocol for the upper layer of the communication protocol. The first standard is, for example, RS232C. The first protocol is, for example, a unique communication protocol. The first communication I / F 11 is communicable with a PV (PhotoVoltanic Power Generation) PCS (Power Conditioning System) 16 to be described later, and acquires the generated power of the solar power generation device by communication.

  The second communication I / F 12 is a communication I / F that uses the second standard for the lower layer including the physical layer of the communication protocol and the second protocol for the upper layer of the communication protocol. The second standard is, for example, RS485. The second protocol is a unique communication protocol. The second communication I / F 12 can communicate with a power storage unit PCS 17 to be described later, and acquires charge / discharge power of the power storage unit through communication.

  The third communication I / F 13 is a communication I / F that uses the third standard for the lower layer including the physical layer of the communication protocol and the third protocol for the upper layer of the communication protocol. The third standard is, for example, I2C. The third protocol is, for example, ECHNET Lite (registered trademark), ZigBee (registered trademark) SEP2.0, and KNX. The third communication I / F 13 communicates with the smart sensor 18.

  The smart sensor 18 separately acquires current values measured by detectors such as a first ammeter 19 such as a CT (Current Transformer), a second ammeter 20, and a third ammeter 21. There are two first ammeters 19, for example, which are attached to a single-phase, three-wire electric wire of a trunk of a distribution board described later, and measure a current supplied to the trunk. The number of the second ammeters 20 is, for example, 16, which is attached to the branch of the distribution board and measures the current supplied to each of the branches. For example, there are two third ammeters 21, for example, a single-phase three-wire of a power generation device such as a fuel cell device or individually attached to a load device, and supplied to the current supplied from the power generation device or the load device. Measure the current. The smart sensor 18 acquires a voltage value measured by a voltmeter such as a VT (Voltage Transformer). Further, the smart sensor 18 calculates the power consumption of the main trunk and the branch and the power value to be measured by the third ammeter 21 based on the measured current value and voltage value. In the present embodiment including the descriptions of FIGS. 1 to 4, the smart sensor 18 is configured outside the power management apparatus 10, but may be configured in the power management apparatus 10.

  The fourth communication I / F 14 is a communication I / F that uses the fourth standard for the lower layer including the physical layer of the communication protocol and the third protocol for the upper layer of the communication protocol. The fourth standard is, for example, Ethernet. The fourth communication I / F 14 communicates with the wireless terminal 23 via the wired / wireless router 22.

  The control unit 15 accumulates information acquired by the first communication I / F 11, the second communication I / F 12, and the third communication I / F 13. The control unit 15 has a storage medium 24 for storing the acquired information. The storage medium 24 may be configured to be connected to the outside of the power management apparatus 10 or may be configured to be built in the power management apparatus 10.

  The controller 15 distinguishes and accumulates the types of information to be acquired. For example, when the first communication I / F 11 acquires information from the PV PCS 16, the control unit 15 accumulates the information as generated power of the solar power generation device. In addition, when the second communication I / F 12 acquires information from the power storage unit PCS 17, the control unit 15 accumulates the information as power that is charged and discharged by the power storage unit. In addition, the control unit 15 uses the information acquired by the third communication I / F 13 from the smart sensor 18 to the first ammeter 19, the second ammeter 20, and the third ammeter 21. Is stored as a power value corresponding to.

  In the control unit 15, two first ammeters 19 are assigned for measuring the current of a single-phase three-wire main trunk of the distribution board. Moreover, in the control part 15, each 2nd ammeter 20 is allocated for the measurement of the electric current of the branch circuit of a distribution board individually. In addition, the control unit 15 assigns the third ammeter 21 to measure the current of a single-phase three-wire supplied by an arbitrary power generation device in pairs, and individually supplies the current of a branch circuit or a load device. It can be changed to the measurement application.

  The power management apparatus 10 according to the present embodiment as described above can be applied to various power management systems having different distributed power supply installation modes. For example, the power management apparatus 10 can be applied to a first power management system as shown in FIG. Hereinafter, the first power management system 25 will be described. FIG. 2 is a communication system diagram showing a schematic configuration of the first power management system.

  The power management system 25 includes a solar power generation device 26, a PV PCS 16, a power storage unit 27, a power storage unit PCS 17, a fuel cell device 28, a distribution board 29, a smart sensor 18, a power management device 10, a wireless router 22, and a wireless terminal 23. It is comprised including.

  The power management apparatus 10 communicates with the PV PCS 16 by using the first standard for the lower layer including the physical layer of the communication protocol and the first protocol for the upper layer of the communication protocol. In addition, the power management apparatus 10 communicates with the power storage unit PCS 17 by using the second standard for the lower layer including the physical layer of the communication protocol and the second protocol for the upper layer of the communication protocol. In addition, the power management apparatus 10 communicates with the smart sensor 18 using the third standard for a lower layer including the physical layer of the communication protocol and the third protocol for the upper layer of the communication protocol. In addition, the power management apparatus 10 uses the fourth standard for the lower layer including the physical layer of the communication protocol and the third protocol for the upper layer of the communication protocol via the wired / wireless router 22. Communicate with the wireless terminal 23.

  The solar power generation device 26 generates power using sunlight. For this reason, the solar power generation device 26 includes a solar battery, and converts sunlight energy into DC power. In this embodiment, the solar power generation device 26 assumes a mode in which, for example, a solar panel is installed on the roof of a house and power is generated using sunlight. However, in the present invention, the solar power generation device 26 may employ any device such as a wind power generation device as long as it can convert sunlight energy into electric power.

  The PV PCS 16 converts the DC power supplied from the photovoltaic power generator 26 into AC power. The PV PCS 16 supplies the converted AC power to the distribution board 29. The PV PCS 16 measures the power generated by the solar power generator 26. The PV PCS 16 notifies the power management device 10 of the generated power generated by the solar power generation device 26.

  The power storage unit 27 includes a storage battery, and can supply power by discharging the power charged in the storage battery. In addition, the power storage unit 27 can charge power supplied from a commercial power source or the solar power generation device 26.

  The power storage unit PCS 17 converts the DC power discharged from the power storage unit 27 into AC power and supplies the AC power to the distribution board 29. In addition, the power storage unit PCS 17 converts AC power supplied from a commercial power source into DC power and charges the power storage unit 27. In addition, the power storage unit PCS 17 measures the power charged / discharged in the power storage unit 27. In addition, the power storage unit PCS 17 notifies the power management apparatus 10 of the power charged / discharged in the measured power storage unit 27.

  The fuel cell device 28 includes a fuel cell, and generates direct-current power by a chemical reaction with oxygen in the air using hydrogen. Further, the fuel cell device 28 includes an inverter, converts the direct current power generated by the fuel cell into alternating current power, and supplies it to the distribution board 29.

  The distribution board 29 branches the AC power supplied from the commercial system, the PV PCS 16, the power storage unit PCS 17, and the fuel cell device 28 into a plurality of branches (branch circuits) and distributes them to each load device. Here, each branch has a direct load device that consumes a large amount of power and a group that is grouped for each room. The former load device is, for example, an air conditioner, a refrigerator, an IH cooking heater, or the like, and the main power corresponds to the power consumption of the corresponding category device. The load equipment in the latter is a set of outlets provided in each room, and the trunk power corresponds to the total power consumption of the outlets in the corresponding room. Here, it is uncertain what load device is connected to the outlet.

  The wireless router 22 communicates with the power management apparatus 10 and the wireless terminal 23 and transmits information and instructions between the power management apparatus 10 and the wireless terminal 23.

  The wireless terminal 23 is a terminal having a display and an input unit, such as a personal computer, a smartphone, or a tablet computer. The wireless terminal 23 receives, from the power management device 10 via the wireless router 22, the generated power of the solar power generation device 26, the charged / discharged power of the power storage unit 27, the generated power of the fuel cell device 28, and the consumption in the main and branch Various information in the first power management system 25 such as power is acquired. The wireless terminal 23 displays various acquired information in various display forms such as numerical values, tables, and graphs. The wireless terminal 23 requests various information from the power management apparatus 10 via the wireless router 22.

  In the first power management system 25 shown in FIG. 2, the installer of the power management device 10 assigns the third ammeter 21 to the single-phase three-wire current measurement of the fuel cell device 28 in the control unit 15. Set to usage. Then, setting information indicating that the third ammeter 21 measures the current of the single-phase three-wire of the fuel cell device 28 in pairs is stored in the storage medium 24. Thereafter, the first power management system 25 manages the set of measured values of the third ammeter 21 and the single-phase three-wire current value of the fuel cell device 28 in association with each other. By setting the allocation of the third ammeter 21 in this way, the power management device 10 accumulates the power calculated based on the measured value of the third ammeter 21 as the generated power of the fuel cell device 28. . Thereafter, when the power management device 10 outputs power information to the wireless terminal 23 or the like, a header or the like as a current value of the single-phase three-wire of the fuel cell device 28 is attached, and one set of the third ammeter 21 is set. The measured value of is output.

  Therefore, the wireless terminal 23 can discriminate from the header and the like, and can display the power calculated based on the measurement value of the third ammeter 21 acquired from the power management device 10 as the generated power of the fuel cell device 28. In addition, as for this header etc., it is desirable to use the header information prescribed | regulated in the communication protocol between the radio | wireless terminal 23 and the power management apparatus 10, especially the 4th protocol of the upper layer.

  Moreover, the power management apparatus 10 of this embodiment is applicable to a 2nd power management system as shown, for example in FIG. Unlike the first power management system 25, the second power management system 30 does not include a fuel cell device and includes two solar power generation devices 26 and 31.

  Similar to the first power management system 25, the PV PCS 16 that measures the generated power of one solar power generation device 26 uses the first protocol in the lower layer including the physical layer of the communication protocol. Is communicated with the power management apparatus 10 using the upper layer of the communication protocol. Since the PV PCS 32 that measures the generated power of the other solar power generation device 31 does not correspond to at least one of the first standard and the first protocol, the power management device 10 uses the first communication I / F 11. Cannot communicate with. Accordingly, the third ammeter 21 is attached to the PV PCS 32 that measures the generated power of the other solar power generation device 31, and the third ammeter 21 measures the current supplied from the PV PCS 32.

  In the second power management system 30 shown in FIG. 3, the installer of the power management apparatus 10 assigns the third ammeter 21 to the current measurement of the single-phase three-wire of the other PV PCS 32 in the control unit 15. Set to usage. Then, the setting information that the third ammeter 21 measures the current of the single-phase three-wire of the other PV PCS 32 in pairs is stored in the storage medium 24. Thereafter, the power management system 30 manages the set of measured values of the third ammeter 21 and the current value of the single-phase three-wire of the other PV PCS 32 in association with each other. By setting the allocation of the third ammeter 21 in this way, the power management apparatus 10 uses the power calculated based on the measurement value of the third ammeter 21 as the generated power of the other solar power generation apparatus 31. Accumulate as. Thereafter, when the power management apparatus 10 outputs power information to the wireless terminal 23 or the like, a header or the like as a current value of the single-phase three-wire of the other PV PCS 32 is attached, and one set of the third ammeter 21 The measured value of is output.

  Therefore, the wireless terminal 23 can discriminate from the header and the like, and can display the power calculated based on the measured value of the third ammeter 21 acquired from the power management device 10 as the generated power of the solar power generation device 31. . The wireless terminal 23 can display the power consumption, the generated power, and the charge / discharge power in the same type of device, and can display the generated power of one solar power generation device 26 and the power generation of the other solar power generation device 31. The power can be added up and displayed.

  Moreover, the power management apparatus 10 of this embodiment is applicable to a 3rd power management system as shown, for example in FIG. Unlike the first power management system 25, the third power management system 33 does not include a fuel cell device, and has a larger number of load devices 34 or more branches than the first power management system 25. A board 29 is included. The third ammeter 21 is attached to a specific load device 34 and / or a branch, and the third ammeter 21 measures a current supplied to the specific load device 34 and / or the branch.

  In the third power management system 33 shown in FIG. 4, the installer of the power management apparatus 10 assigns the third ammeter 21 to the specific load device 34 and / or the current of the trunk in the control unit 15. Set to measurement application. Then, setting information indicating that the third ammeter 21 individually measures the current of the load device 34 and / or the trunk is stored in the storage medium 24. Thereafter, the power management system 30 manages each measured value of the third ammeter 21 in association with the current value of the load device 34 and / or the trunk. By setting the allocation of the third ammeter 21 in this way, the power management apparatus 10 uses the specific load device 34 and / or the backbone to calculate the power calculated based on the measurement value of the third ammeter 21. It accumulates as power consumption. Thereafter, when the power management apparatus 10 outputs power information to the wireless terminal 23 or the like, the header as the current value of the load device 34 or the branch corresponding to the setting for each measured value in each of the third ammeters 21. Etc. and output.

  Therefore, the wireless terminal 23 determines the power calculated based on the measured value of the third ammeter 21 obtained from the power management apparatus 10 from the header and the like, and uses the power consumed by the specific load device 34 and / or the backbone. Can be displayed. As described above, the wireless terminal 23 can display the power consumption, the generated power, and the charge / discharge power in the same type of device together. For example, when an arbitrary branch is used for supplying current to a specific type of device, such as an air conditioner, and the third ammeter 21 measures the current of another air conditioner, the wireless terminal 23 The current consumption can be summed and displayed.

  According to the power management apparatus of the present embodiment configured as described above, the current can be changed so that the allocation of the third ammeter can be changed to any one of a plurality of applications including a current value measurement application of the power generator. The allocation of the total is properly defined. Therefore, for example, in a power management system that is not provided with a power generation device such as the fuel cell device 28, the third ammeter 21 can be assigned to another application, and the situation where the third ammeter 21 is not used is prevented. It is possible.

  Further, according to the power management apparatus of the present embodiment, the allocation of the first ammeter 19 and the second ammeter 20 other than the third ammeter 21 whose allocation can be changed is determined by the currents of the main and the branch, respectively. It is fixed for measurement. Therefore, it is possible to reduce the complexity of installation and setting during installation of the power management device 10 and the first ammeter 19, the second ammeter 20, and the third ammeter 21 by the installer. It is.

  Further, according to the power management apparatus of the present embodiment, the allocation of the third ammeter 21 is the same device as the specific device that acquires information through the first communication I / F 11 to the third communication I / F 13. In this case, the power values of the specific devices can be summed. Such a configuration makes it easy to grasp the power value of the entire specific device.

  Further, although each embodiment has been described by taking the detector as an ammeter and measuring the current value as an example, the detector may be a voltmeter or a wattmeter. That is, the present invention is not limited to the measurement of the current value, and can be replaced as long as it measures power information such as a voltage value or a power value.

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

  For example, the physical layer and protocol of communication may be a physical layer and protocol other than the physical layer and protocol described in this embodiment.

10 Power Management Device 11 First Communication I / F (Inter Face)
12 Second communication I / F
13 Third communication I / F
14 Fourth communication I / F
15 Control Unit 16 PV (PhotoVoltanic Power Generation) PCS (Power Conditioning System)
17 Power storage unit PCS
DESCRIPTION OF SYMBOLS 18 Smart sensor 19 1st ammeter 20 2nd ammeter 21 3rd ammeter 22 Wireless router 23 Wireless terminal 24 Storage medium 25 1st power management system 26 Solar power generation device 27 Power storage part 28 Fuel cell device 29 Distribution board 30 Second power management system 31 Solar power generation device 32 PV PCS
33 Third power management system 34 Load equipment

Claims (9)

A power management device capable of acquiring power information measured by each of a plurality of detectors,
A controller configured to set any one of the plurality of detectors to any one of a plurality of measurement objects;
The plurality of detectors are:
A specific detector that can be set to any of the measurement applications of the plurality of measurement objects;
A detector other than the specific detector, the detector being fixed to one of the measurement applications of the plurality of measurement objects, and having a fixed detector larger than the number of the specific detectors. A power management apparatus characterized by the above.   2. The power management device according to claim 1, wherein in the control unit, the allocation of the specific detector is determined as one set for single-phase three-wire measurement of the power generation device, or is individually measured A power management apparatus characterized in that the setting can be changed.   3. The power management apparatus according to claim 1, wherein the control unit attaches information identifying a currently set measurement target to the measurement value of the specific detector and externally. A power management device that outputs the power to the power management device.   4. The power management apparatus according to claim 1, wherein the control unit allocates the fixed detector to a main use of a distribution board and a main use of the distribution board. 5. And obtaining power consumption in the main board of the distribution board and the branch board of the distribution board from a detector assigned to the main board of the distribution board and the branch board of the distribution board. Power management device.   5. The power management apparatus according to claim 1, wherein a specific load device is included in the allocation of the specific detector. 6.   6. The power management apparatus according to claim 1, wherein the specific detector is assigned to a power generation apparatus or a specific load device.   The power management apparatus according to any one of claims 1 to 6, wherein the detector is built-in. A power management system including a power management apparatus capable of acquiring power information measured by each of a plurality of detectors, and a communication terminal capable of communicating with the power management apparatus and displaying a screen based on the power information,
The power management device includes:
A controller configured to set any one of the plurality of detectors to any one of a plurality of measurement objects;
The plurality of detectors are:
A specific detector that can be set to any of the measurement applications of the plurality of measurement objects;
A detector other than the specific detector, which is fixed to one of the measurement applications of the plurality of measurement objects, and has a fixed detector larger than the number of the specific detectors. ,
The communication terminal is
A power management system that receives measurement values of the plurality of detectors from the power management apparatus and displays power information of a measurement target based on the received measurement values. A power management method in a power management system comprising: a power management device capable of acquiring power information measured by each of a plurality of detectors; and a communication terminal capable of communicating with the power management device and displaying a screen based on the power information. There,
A first step in which the power management apparatus sets any one of the plurality of detectors to any one of a plurality of measurement target measurement applications;
A second step in which the communication terminal receives measurement values of the plurality of detectors from the power management device;
The communication terminal has a third step of displaying power information of a measurement object based on the received measurement value;
In the first step, the plurality of detectors are a specific detector that can be set to any one of the measurement applications of the plurality of measurement objects, and a detector other than the specific detector, A power management method, comprising: fixed detectors that are fixed to any of a plurality of measurement applications, and more fixed detectors than the number of the specific detectors.

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