JP7377759B2 - Power monitoring and control device, power monitoring and control program - Google Patents

Description

The present invention relates to a power monitoring and control device for distributed power supply equipment. For more information, please refer to our electric power monitoring and control device, which uses wireless communication to acquire power information such as current, electric power, and electric energy required to control the operation of a household fuel cell cogeneration system, which is an example of distributed power supply equipment. This relates to a supervisory control program.

(Existing equipment)

In addition to commercial power sources, homes equipped with so-called distributed power sources, such as solar power generation, storage batteries, cogeneration systems that generate electricity using gas engines and fuel cells, and utilize waste heat, may experience overcurrent or reverse power flow. It is important to monitor such matters. For example, a distributed power source such as a cogeneration system is installed by attaching a clamp-type current sensor (hereinafter referred to as a CT clamp) to the distribution board of the house, and wiring work that penetrates the wall of the house. It was common to monitor overcurrent, reverse power flow, etc. by connecting to the control system of a distributed power source.

As a prior art related to a CT clamp attached to a distribution board, there is Patent Document 1.

Patent Document 1 describes a load group installed in a house, a power storage device installed in the house that can be charged and discharged, power purchased and sold to a commercial power source, power supplied to the load group, and charging to the power storage device. A distribution board that relays discharged power, each CT clamp and measuring device that can measure the amount of purchased power, sold power, charging power, discharged power, and total branch circuit power, and the house and communication network. Management that determines abnormality of the power storage device based on the amount of purchased power, the amount of sold power, the amount of charging power, the amount of discharged power, and the total amount of power in the branch circuit, which are connected to each other and measured by each CT clamp and measuring device during the set period. A power control system is described that includes: an operation monitoring unit for an external server installed in a facility.

However, the work required to connect the CT clamp to the control system of a distributed power source such as a cogeneration system, especially the wiring of signal lines, involves penetrating the walls of the house, which takes a long time and is costly. .

By the way, if it is possible to directly acquire data on the power usage status of a house from a smart meter or indirectly from a home controller such as a HEMS (Home Energy Management System), CT Although it is possible to omit the work of attaching the clamp to a distribution board or the like and the work of wiring penetrating the wall of a house, this has not yet been realized.

Note that smart meter information acquisition has communication paths of A route, B route, and C route.

Route A is a communication route that connects the smart meter and the electric power company, route B is a communication route that connects the smart meter and HEMS, etc., and route C is the communication route that connects the smart meter and HEMS, etc. This is a communication route for providing information to customers (retail electricity companies, etc.).

The power information acquired by the HEMS from the smart meter via Route B is further transferred from the HEMS to the distributed power source such as the cogeneration system using specified low power wireless communication, etc. It is conceivable that the control system of the controller acquires power information.

As a reference regarding smart meters, Patent Document 2 describes the provision of a distribution board that can prevent enlargement even if it accommodates equipment that manages both power consumption data of branch power lines and power amount data from smart meters. Are listed.

More specifically, Patent Document 2 describes a main breaker, a plurality of branch breakers connected to the main bar, a current sensor unit that measures the current flowing through each branch breaker, and a current sensor unit installed at a site adjacent to the branch breaker. and a power information transmitting unit equipped with a power information output section that receives branch current information measured by the current sensor unit, calculates and outputs power usage for each branch circuit, and the power information transmitting unit is connected to the main bar. between the smart meter installed on the primary side of the main breaker via the connected main bar and G3-PLC (Power Line Communication) or Wi-SUN (Wireless Smart Utility Network). B-route communication is performed in one of the communications, and in addition to the power amount data obtained through the communication, the power consumption data of the branch electric line obtained from the current sensor unit is output to the outside.

In addition, as a conventional technology described in Patent Document 2, a power information transmission unit installed in a distribution board performs B route communication with a smart meter using either G3-PLC or Wi-SUN wireless communication. , there is no description of the relationship between the power information transmission unit and the distributed power sources.

Japanese Patent Application Publication No. 2018-133867 Japanese Patent Application Publication No. 2014-075895

However, there are cases where a HEMS is built in a house, and there are cases where a HEMS is not built. In information communication, it is necessary to construct communication protocols that do not interfere with each other, but this has not yet been achieved.

The present invention constructs a configuration that acquires power information from a smart meter, eliminates wired wiring and associated wall penetration work, and connects a smart meter or HEMS with a control system for a distributed power source such as a cogeneration system. The purpose is to obtain a power monitoring and control device and a power monitoring and control program that are capable of constructing a communication protocol that does not interfere with each other in the form of communication between the two.

The power monitoring and controlling device according to the present invention is a power monitoring and controlling device for a distributed power source that generates power according to acquired power information, and is connected to a power lead-in line for drawing a commercial power source indoors, and is installed indoors. a communication unit that establishes wireless communication with a smart meter that measures power information according to the use of the loaded load equipment; and acquisition of power information including the indoor power consumption transition through communication between the communication unit and the communication unit. It has a section and.

For this reason, we built a configuration to acquire power information from smart meters, omitting wired wiring and the associated wall penetration work, and also connecting smart meters and control systems of distributed power sources such as cogeneration systems. In terms of communication formats, it is possible to construct communication protocols that do not interfere with each other.

The present invention is characterized in that the communication unit constructs a communication protocol for directly acquiring the power information from the smart meter via route B.

In environments where HEMS has not been constructed (including cases where HEMS has been constructed but is not used), current, power, and electric energy can be transmitted from a smart meter via wireless communication (specific low-power wireless communication, Wi-SUN wireless communication/B route). All you have to do is acquire the initial power information.

In the present invention, a HEMS that acquires and manages the power information from the smart meter is constructed indoors, and the communication unit obtains the power information by requesting the power information from the HEMS. It is characterized by the construction of a communication protocol that

In an environment where a HEMS is constructed, the HEMS requests power and current value information from the smart meter, and the communications department requests the HEMS for power and current value information, so that a distributed power source such as a cogeneration system can receive power. and obtain current value information.

In the present invention, a HEMS that acquires and manages the power information from the smart meter is constructed indoors, and the communication unit receives the power information transmitted from the HEMS at predetermined intervals. It is characterized by receiving.

In an environment where a HEMS is constructed, the HEMS requests the smart meter for power and current value information, and the HEMS transmits the power and current value information to the distributed power source without making a request from the communication unit.

In the present invention, a HEMS that acquires and manages the power information from the smart meter is constructed indoors, and the communication unit notifies the HEMS of the power information acquired from the smart meter. It is characterized by

For example, in HEMS, it is possible to accurately grasp the distribution ratio of distributed power sources.

In the present invention, the communication unit transmits the power information to a server that aggregates and stores information on a plurality of distributed power sources using a communication means different from a communication means for acquiring the power information. It is characterized by

The power information obtained from the control system of the distributed power source via Route B is transferred to the server via medium-to-long distance communication such as LPWA (Low Power Wide Area). In other words, it can be used in place of the HEMS function.

In the present invention, the distributed power source is a fuel cell cogeneration system including a power generation section that generates power using gas and a hot water generation section that generates hot water using heat generated during power generation. It is characterized by

The power monitoring control program according to the present invention is characterized by causing a computer to operate as a power monitoring and control device.

The present invention is new in that it acquires power information by wireless communication between a smart meter and a distributed power source such as a cogeneration system without penetrating the wall, and is suitable for three-party communication formats including HEMS. , has made great progress in that it is now possible to construct communication protocols that do not interfere with each other.

According to the present invention, a configuration is constructed to acquire power information from a smart meter, eliminating wired wiring and associated wall penetration work, and controlling smart meters or HEMS and distributed power sources such as cogeneration systems. This has the effect that it is possible to construct a communication protocol, etc. that does not interfere with each other in the form of communication with the system.

1 is a schematic diagram of a cogeneration device according to a first embodiment and a house in which the cogeneration device is installed. It is a control block diagram of the controller of a cogeneration device. It is a transition characteristic diagram of the amount of electricity used, the amount of hot water stored in a tank, the amount of hot water used, and the amount of gas used based on living conditions (daily lifestyle). FIG. 2 is a schematic diagram of a communication protocol for transmitting and receiving power information, which is executed between the controller of the cogeneration device and the smart meter according to the first embodiment. It is a schematic diagram of a cogeneration device and a house in which the cogeneration device is installed according to a second embodiment and a third embodiment. FIG. 7 is a schematic diagram of a communication protocol for transmitting and receiving power information, which is executed between the controller of the cogeneration device, the smart meter, and the HEMS controller according to the second embodiment. FIG. 7 is a schematic diagram of a communication protocol for transmitting and receiving power information, which is executed between the controller of the cogeneration device, the smart meter, and the HEMS controller according to the third embodiment.

(First embodiment)

FIG. 1 shows a schematic diagram of a household fuel cell cogeneration device (hereinafter simply referred to as "cogeneration device 10") as an example of distributed power supply equipment according to the first embodiment.

The cogeneration device 10 is a system that includes a tank unit and a fuel cell unit. Note that coexisting does not mean that they are physically adjacent, but rather that they cooperate with each other. That is, the tank unit and the fuel cell unit may be installed separately and connected by piping, electrical wiring, or the like.

As shown in FIG. 1, the cogeneration device 10 is installed along the outer wall of a house 12, and a worker goes to the site and performs the installation work.

FIG. 1 shows a state in which the installation work has been completed, the test run has been completed, and the system can be operated steadily in cooperation with various equipment (electrical equipment, hot water supply equipment, etc.) on the house 12 side.

(Configuration of cogeneration device 10)

Although not shown, the cogeneration device 10 includes a hot module, a power conditioner, an exhaust heat recovery device, a heat storage tank, a radiator, a heat exchanger, etc., each of which is controlled by a controller 14 to control a hot water supply related control section 27 and a power generation device. They are controlled in cooperation with each other via the related control section 29 (see FIG. 2).

The hot module uses a fuel processing device to extract hydrogen, supplies the extracted hydrogen to the fuel cell stack, and generates DC power using oxygen in the air.

A power conditioner converts the generated DC power into AC power and supplies it to a house.

The exhaust heat recovery device recovers heat from exhaust heat gas generated by power generation.

A heat storage tank can store heat recovered via a heating medium at high temperatures, and the stored heat is used when hot water is supplied.

A radiator causes a heat medium to radiate heat. A radiator is not required.

The heat exchanger uses the high temperature heat medium from the heat medium tank to heat the tap water. A heat exchanger is not required.

Further, the cogeneration device 10 can also send the generated power to the heat source device 16 via the power line 15. The heat source device 16 further heats the hot water heated by the cogeneration device 10 by burning city gas (for example, 13A) as needed, and supplies the heated water to the house 12.

As shown in FIG. 2, the controller 14 includes a microcomputer 28 composed of a CPU 18, a RAM 20, a ROM 22, an I/O 24, and a bus 26 such as a data bus or a control bus that connects these.

A hot water supply related control section 27 and a power generation related control section 29 are connected to the I/O 24, and operations associated with hot water supply and power generation are controlled by the controller 14.

A large-scale storage device 30 is also connected to the I/O 24, which stores processing programs related to power generation and hot water supply executed by the controller 14, as well as history information based on power generation (for example, communication interval adjustment information). etc.) are now memorized.

Furthermore, a remote control 32 is connected to the I/O 24. The remote control 32 is installed inside the house 12 in which the cogeneration device 10 is installed, and has a function that allows the user to input commands regarding the cogeneration device 10 (and the heat source device 16) and displays the status of the cogeneration device 10. It has functions such as

(Distributed power source configuration)

As shown in FIG. 1, in the distributed power source according to the first embodiment, the power generated by the commercial power source 34 and the cogeneration device 10 is used as the power source for the house 12.

Commercial power source 34 is connected to smart meter 36 . The smart meter 36 measures electric power information such as the current, electric power, and electric energy of the commercial power source 34, and transmits the measured information to a specific communication destination through the communication paths of route A, route B, and route C. Is possible.

That is, the A route is a communication path that connects the smart meter 36 and the electric power company, and the B route is a communication path that connects the smart meter 36 and the equipment installed in the house 12 (for example, if a HEMS is constructed, its controller, etc. ), and the C route is a communication route for providing data acquired by the power company via the A route to a third party (retail power company, etc.).

A power line 38 output from the smart meter 36 is wired to a distribution board 40 installed in the house 12.

In the distribution board 40, assuming that the smart meter 36 side is the upstream side, a service breaker 42, an earth leakage breaker 46, and a safety breaker 48 are installed in this order from the upstream side.

The service breaker 42 is a circuit breaker for determining contract capacity, but may not be installed.

The earth leakage breaker 46 is a circuit breaker that quickly senses and interrupts earth leakage in the internal wiring and electrical equipment of the house 12 to prevent electrical accidents.

The safety breaker 48 is attached to each of the branch circuits for transmitting power from the distribution board 40 to each usage location of the house 12, and is automatically activated when a short circuit or power usage exceeding a certain level is detected due to a failure of electrical equipment, etc. It is a circuit breaker that protects the circuit.

Here, the power generated by the cogeneration device 10 is combined with the commercial power source 34 via a dedicated safety breaker 48A provided in the distribution board 40, and is used as a power source for electrical equipment inside the house 12. I can do it.

Although not shown in the drawings, the cogeneration device 10 is provided with a power line dedicated to when the commercial power source 34 is out of power, so that the power generated by the cogeneration device 10 can be switched on when power is not supplied from the commercial power source 34 due to a power outage. , can be supplied through a power outage dedicated outlet installed in a part of the house 12.

Here, the controller 14 of the cogeneration device 10 needs to control the generated power according to the amount of power used in the house 12, which changes from moment to moment.

As an example, FIG. 3 shows a transition characteristic diagram of power usage, tank hot water storage volume, hot water supply usage, and gas usage based on living conditions (daily lifestyle). In FIG. 3, as an example, it is assumed that the rated power generation output of the cogeneration device 10 is 0.7kW, and if the power consumption in the house 12 is 0.7kW or less, the power consumption in the house 12 is only the power generation output. When the power exceeds 0.7 kW, control is shown in which the power is supplied by the generated power and the commercial power supply 34. Therefore, the controller 14 uses the B route communication path from the smart meter 36 to obtain power information such as the current, power, and amount of power of the commercial power source 34.

In the first embodiment, the interval at which power information is acquired from the smart meter 36 via the B-route communication path is set to once every 30 seconds. With this interval, it is possible to roughly follow the ever-changing power usage in the house 12 without violating various wireless communication standards, and to perform control approximating the power transition characteristics shown in FIG. 3.

The operation of the first embodiment will be explained below according to the communication protocol shown in FIG.

FIG. 4 shows communication for transmitting and receiving power information (the controller 14 is on the power information receiving side) performed between the controller 14 of the cogeneration device 10 and the smart meter 36 according to the first embodiment. FIG. 2 is a schematic diagram of the protocol.

First, the controller 14 requests the smart meter 36 to connect route B (step 100). The smart meter 36 receives the request in step 100 and responds to the connection of route B (step 102).

When communication becomes possible between the controller 14 and the smart meter 36, the controller 14 requests power information from the smart meter 36 (step 104). In response to the request in step 104, the smart meter 36 transmits power information to the controller 14 (step 106). The controller 14 stores the received power information (step 108).

The controller 14 repeats acquiring power information (step 110→step 112→step 114) at predetermined intervals (in the first embodiment, the default value is 30 seconds/time). Through this repeated acquisition of power information, it is possible to roughly follow the ever-changing power usage in the house 12, and to perform control approximating the power transition characteristics shown in FIG. 3.

Here, in the conventional embodiment, when the cogeneration device 10 is installed in the house 12, the controller 14 of the cogeneration device 10 uses the CT It was necessary to attach the clamp to the distribution board 40, etc., and to run the wiring through the wall of the house 12.

In contrast, in the first embodiment, when the cogeneration device 10 is installed in the house 12, the controller 14 of the cogeneration device 10 directly acquires data on the power usage status of the house from the smart meter 36. be able to.

In this case, by setting a predetermined interval (in the first embodiment, 30 seconds/time), the smart meter 36 can mutually transmit radio waves with other devices that communicate using route B. Since interference is avoided, an optimal communication protocol etc. can be constructed.

(Second embodiment)

A second embodiment of the present invention will be described below.

The controller 14 of the cogeneration device 10 according to the first embodiment acquires power information directly from the smart meter 36 installed in the house 12 via route B. Note that the same components as those in the first embodiment are given the same reference numerals, and explanations of the configurations will be omitted.

As shown in FIG. 5, a HEMS 62 is built in the house 12 according to the second embodiment.

The HEMS 62 saves electricity and gas used in the house 12 by managing it in real time, and also helps prevent global warming by reducing carbon dioxide.

By connecting home appliances and the like to the HEMS controller 64 built into the HEMS 62 and managing the usage status of electricity and gas on a monitor, visualization (monitor display) is realized and the home appliances are automatically controlled.

Here, the feature of the first embodiment is that when the HEMS 62 is not constructed, or when the HEMS 62 is constructed but not used, the controller 14 of the cogeneration device 10 connects the smart meter by wireless communication. The purpose was to obtain power information from 36.

On the other hand, the feature of the second embodiment is that in the environment where the HEMS 62 is constructed, the HEMS controller 64 requests power information from the smart meter 36, and the controller 14 of the cogeneration device 10 requests power information from the HEMS controller 64. The controller 14 of the cogeneration device 10 obtains the power information by requesting the power information from the cogeneration device 10 .

It should be noted that the HEMS 62 acquires the data that is the basis of management from the smart meter 36. In other words, the HEMS controller 64 has acquired the same power information as the smart meter 36.

Therefore, in the second embodiment, Wi-SUN HAN wireless communication, Wi-SUN Enhanced HAN wireless communication, specified low power wireless communication, LPWA, etc. are performed between the controller 14 of the cogeneration device 10 and the HEMS controller 64. A communication protocol is constructed using the communication means, and power information is acquired from the HEMS controller 64.

The operation of the second embodiment will be explained below according to the communication protocol shown in FIG.

Since the power information acquired from the HEMS controller 64 is equivalent to the power information acquired from the smart meter 36, the controller 14 of the cogeneration device 10 communicates with the HEMS controller 64.

FIG. 6 shows power information transmission and reception performed between the controller 14 of the cogeneration device 10, the smart meter 36, and the HEMS controller 64 (the controller 14 is on the power information receiving side) according to the second embodiment. ) is a schematic diagram of a communication protocol for

The HEMS controller 64 requests connection of route B to the smart meter 36 (step 150). The smart meter 36 receives the request in step 150 and responds to the connection of route B (step 152).

When communication becomes possible between the HEMS controller 64 and the smart meter 36, the HEMS controller 64 requests power information from the smart meter 36 (step 154). In response to the request in step 154, the smart meter 36 transmits power information to the HEMS controller 64 (step 156). In the HEMS controller 64, the power information received from the smart meter 36 is accumulated and stored (step 158).

On the other hand, communication between the controller 14 of the cogeneration device 10 and the HEMS controller 64 is different from route B, such as Wi-SUN HAN wireless communication, Wi-SUN Enhanced HAN wireless communication, specified low power wireless communication, LPWA, etc. A communication protocol is constructed by means.

Therefore, when power information is requested from the HEMS controller 64 at a predetermined interval (in the second embodiment, 30 seconds/time) (step 160), the HEMS controller 64 receives power information from the smart meter 36. The received and stored power information is transmitted to the controller 14 (step 164). Controller 14 stores the received power information (step 166). Here, the HEMS controller 64 acquires and stores the information in advance, but it may also acquire and store information from the smart meter 36 when requested by the controller 14.
The controller 14 repeats acquiring power information at predetermined intervals (step 168→step 170→step 172). Through this repeated acquisition of power information, it is possible to roughly follow the ever-changing power usage in the house 12, and to perform control approximating the power transition characteristics shown in FIG. 3.

Here, in the conventional embodiment, when the cogeneration device 10 is installed in the house 12, the controller 14 of the cogeneration device 10 uses the CT It was necessary to attach clamps and the like to the distribution board 40, etc., and to run the wiring through the wall of the house 12.

On the other hand, in the second embodiment, when installing a cogeneration device 10 in a house 12, the controller 14 of the cogeneration device 10 monitors the power usage of the house, which is acquired from the smart meter 36 by the HEMS controller 64. Status data can be obtained indirectly.

In this case, by setting a predetermined interval (in the second embodiment, 30 seconds/time), the smart meter 36 can mutually transmit radio waves with other devices that communicate using route B. Since interference is avoided, an optimal communication protocol etc. can be constructed. This time, communication is performed between the smart meter 36 and the controller 14 of the cogeneration device 10 via the HEMS controller 64, but the same communication can be performed when the controller 14 is communicated between the smart meter 36 and the HEMS controller 64. This is the operation flow.

(Third embodiment)

A third embodiment of the present invention will be described below.

The controller 14 of the cogeneration device 10 according to the first embodiment acquires power information directly from the smart meter 36 installed in the house 12 via route B. Note that the same components as those in the first embodiment and the second embodiment are designated by the same reference numerals, and explanations of the configurations will be omitted.

As shown in FIG. 5, a HEMS 62 is built in the house 12 according to the third embodiment. That is, the schematic diagram of the house in which the cogeneration device 10 of FIG. 5 is installed is common to the second embodiment and the third embodiment.

Here, the feature of the first embodiment is that when the HEMS 62 is not constructed, or when the HEMS 62 is constructed but not used, the controller 14 of the cogeneration device 10 connects the smart meter by wireless communication. The purpose was to obtain power information from 36.

Further, the feature of the second embodiment is that in the environment where the HEMS 62 is constructed, the HEMS controller 64 requests the smart meter 36 for power information, and the controller 14 of the cogeneration device 10 requests the HEMS controller 64 to receive power information. By requesting the information, the controller 14 of the cogeneration device 10 obtains the power information.

In contrast, the feature of the third embodiment is that in the environment where the HEMS 62 is constructed, the HEMS controller 64 requests the smart meter 36 for power information, and the controller 14 of the cogeneration device 10 does not request the power information. In both cases, power information is transmitted from the HEMS controller 64 to the controller 14 of the cogeneration device 10 .

It should be noted that the HEMS 62 acquires the data that is the basis of management from the smart meter 36. In other words, the HEMS controller 64 has acquired power information equivalent to that of the smart meter 36.

Therefore, in the third embodiment, between the controller 14 of the cogeneration device 10 and the HEMS controller 64, Wi-SUN HAN wireless communication, Wi-SUN Enhanced HAN wireless communication, specified low power wireless communication, LPWA, etc. A communication protocol is constructed using the communication means, and power information is acquired from the HEMS controller 64 without requesting it from the controller 14 of the cogeneration device 10.

The operation of the third embodiment will be explained below according to the communication protocol shown in FIG.

Since the power information acquired from the HEMS controller 64 is equivalent to the power information acquired from the smart meter 36, the controller 14 of the cogeneration device 10 communicates with the HEMS controller 64.

FIG. 7 shows power information transmission and reception performed between the controller 14 of the cogeneration device 10, the smart meter 36, and the HEMS controller 64 (the controller 14 is on the power information receiving side) according to the third embodiment. ) is a schematic diagram of a communication protocol for

The HEMS controller 64 requests connection of route B to the smart meter 36 (step 200). The smart meter 36 receives the request in step 200 and responds to the connection of route B (step 202).

When communication becomes possible between the HEMS controller 64 and the smart meter 36, the HEMS controller 64 requests power information from the smart meter 36 (step 204). In response to the request in step 204, the smart meter 36 transmits power information to the HEMS controller 64 (step 206). Next, the power information received from the smart meter 36 is accumulated and stored in the HEMS controller 64 (step 207).

On the other hand, communication between the controller 14 of the cogeneration device 10 and the HEMS controller 64 is different from route B, such as Wi-SUN HAN wireless communication, Wi-SUN Enhanced HAN wireless communication, specified low power wireless communication, LPWA, etc. A communication protocol is constructed by means.

Therefore, based on the program installed in the HEMS controller 64, power information is transmitted to the HEMS controller 64 at predetermined intervals (in the third embodiment, 30 seconds/time) (step 208) (step 210). ). The controller 14 stores the received power information (step 212).

This series of processing (processing of sequentially storing the power information received from the HEMS controller 64 at predetermined intervals of step 208 → step 210 → step 212) is repeated (step 214 → step 216 → step 218). Through this repeated acquisition of power information, it is possible to roughly follow the ever-changing power usage in the house 12, and to perform control approximating the power transition characteristics shown in FIG. 3.

Here, in the conventional embodiment, when the cogeneration device 10 is installed in the house 12, the controller 14 of the cogeneration device 10 uses the CT It was necessary to attach clamps and the like to the distribution board 40, etc., and to run the wiring through the wall of the house 12.

On the other hand, in the third embodiment, when the cogeneration device 10 is installed in the house 12, the controller 14 of the cogeneration device 10 is configured to monitor the power usage of the house, which is acquired from the smart meter 36 by the HEMS controller 64. Status data can be obtained indirectly. Moreover, the controller 14 of the cogeneration device 10 can receive power information from the HEMS controller 64 without requesting power information from the HEMS controller 64 one by one, and can communicate using the B route of the smart meter 36. Since radio waves are prevented from interfering with other devices, it is possible to create optimal communication protocols. This time, power information is stored through communication between the smart meter 36 and the HEMS controller 64, and the power information is transmitted from the HEMS controller 64 to the controller 14 of the cogeneration device 10. The power information may be stored by communicating with the controller 14 of the device 10, and the power information may be transmitted from the controller 14 of the cogeneration device 10 to the HEMS controller 64.

In addition, in the first embodiment, the environment is such that the HEMS 62 is not installed in the house 12, and there is no means to notify power information according to the indoor lifestyle to, for example, an electric power company or a retail electricity company. Ta. Therefore, the power information acquired through route B is transferred from the controller 14 of the cogeneration device 10 to a server of an electric power company, a retail electricity company, or the like through medium-to-long distance communication such as LPWA. That is, the controller 14 of the cogeneration device 10 can be used in place of the HEMS function.

Further, in the second embodiment and the third embodiment, the controller 14 of the cogeneration device 10 mainly receives power information, but the controller 14 of the cogeneration device 10 receives power information from the HEMS controller. 64 may be periodically notified of power information including information regarding power generation. Thereby, the HEMS 62 can accurately grasp the distribution ratio of the distributed power sources and the like.

In addition, in the present invention, the combination of distributed power sources is not limited to the commercial power source 34 and the cogeneration device 10, but when combined with other renewable energies such as solar power generation, geothermal power generation, wind power generation, and storage batteries, smart The present invention is applicable to all configurations that acquire power information from the meter 36 or the like and control the amount of power generation.

10 cogeneration device 12 house 14 controller 15 power line 16 heat source device 18 CPU (notification unit, acquisition unit)
20 RAM
22 ROM
24 I/O
26 Bus 27 Hot water supply related control unit 28 Microcomputer 29 Power generation related control unit 30 Large scale storage device 32 Remote control 34 Commercial power supply 36 Smart meter 38 Power line 40 Distribution board 42 Service breaker 46 Earth leakage breaker 48 Safety breaker 48A Safety breaker 62 HEMS
64 HEMS controller

Claims (7)

A power monitoring and control device for a distributed power source that generates power according to acquired power information,
a communication unit that establishes wireless communication with a smart meter that is connected to a power lead-in line for drawing commercial power indoors and measures power information according to the use of the load equipment installed indoors;
an acquisition unit that acquires power information including the indoor power consumption transition through communication by the communication unit;
has
A HEMS that acquires and manages the power information from the smart meter is built indoors,
A power monitoring and control device in which the communication unit notifies the HEMS of power information acquired from the smart meter . The communication department,
The power monitoring and control device according to claim 1, wherein a communication protocol is constructed to directly acquire the power information from the smart meter via route B. A HEMS that acquires and manages the power information from the smart meter is built indoors,
The power monitoring and control device for a distributed power source according to claim 1, wherein the communication unit constructs a communication protocol for acquiring power information by requesting the power information from the HEMS. A HEMS that acquires and manages the power information from the smart meter is built indoors,
The power monitoring and control device according to claim 1, wherein the communication unit receives the power information from the HEMS at predetermined intervals. The communication department,
Any one of claims 1 to 4 , wherein the power information is transmitted to a server that aggregates and stores information on a plurality of distributed power sources using a communication means different from a communication means for acquiring the power information. 2. The power monitoring and control device according to item 1. The distributed power source is
Any one of claims 1 to 4 , wherein the fuel cell cogeneration system is provided with a power generation unit that generates power using gas and a hot water generation unit that generates hot water using heat generated during power generation. The power monitoring and control device according to item 1. computer,
Operated as the power monitoring control device according to any one of claims 1 to 6 ,
Power monitoring control program.