JP2021164199A - Device and program for power monitoring control - Google Patents

Abstract

To promptly notify an excess of a tracking error to power consumption by indoor load apparatuses beyond a tolerable range due to an environmental change, etc.SOLUTION: When communication fails continuously for a predetermined number of times or larger, the presence of a problem which causes a communication trouble is determined, so that the determination information of communication failure and status information at the communication failure are notified. This enables widely notifying users and administrators of at least a state that improvement is required. Additionally, since there may be cases that a communication failure is temporary, trials to acquire power information are continued even after the notification of the communication failure, using communication with predetermined communication intervals, so that power information can be acquired if the communication failure is repaired.SELECTED DRAWING: Figure 4

Description

The present invention relates to a power monitoring and control device for distributed power supply equipment. Specifically, it is an example of distributed power supply equipment, a power monitoring control device that acquires power information such as current, power, and electric energy required for operation control of a household fuel cell cogeneration system by wireless communication, and power. It is related to the monitoring control program.

(Existing equipment)

Overcurrent and reverse current in houses equipped with so-called distributed power sources such as cogeneration systems that generate electricity using solar power generation, storage batteries, gas engines and fuel cells in addition to commercial power sources and use waste heat. Etc. are important to monitor. For example, a distributed power source such as a cogeneration system can be used as a control system for a distributed power source such as a cogeneration system by attaching a clamp-type current sensor or the like to a distribution board or the like of a house and performing wiring work penetrating the wall of the house. By connecting, it was common to monitor overcurrent and reverse power flow.

By the way, if it is possible to directly acquire the power usage data of the house from the smart meter, or indirectly obtain the power usage data of the house from the home controller such as HEMS (Home Energy Management System), it will be clamped. It is possible to omit the work of attaching the type current sensor to the distribution board and the wiring work that penetrates the wall of the house, but it has not been realized yet.

The smart meter information acquisition has communication routes of A route, B route, and C route.

Route A is a communication path connecting the smart meter and the electric power company, route B is a communication path connecting the smart meter and HEMS, etc., and route C is the data acquired by the electric power company via route A. It is a communication route for providing to three parties (retail electric power companies, etc.).

As a reference regarding a smart meter, Patent Document 1 can provide a distribution board that can prevent an increase in size even if a device that manages both power consumption data of a branch electric circuit and electric energy data from a smart meter is accommodated. Have been described.

More specifically, in Patent Document 1, a main breaker, a plurality of branch breakers connected to the main bar, a current sensor unit for measuring the current flowing through each branch breaker, and a portion adjacent to the branch breaker are installed. It also has a power information transmission unit equipped with a power information output unit that receives the branch current information measured by the current sensor unit, calculates and outputs the power used for each branch circuit, and the power information transmission unit is connected to the main bar. G3-PLC (Power Line Communication) or Wi-SUN (Wireless Smart Utility Network) with a smart meter installed on the primary side of the main breaker via a connected main bar. B route communication is performed by any of the wireless communications, and in addition to the power amount data obtained by the communication, the power usage data of the branch electric circuit obtained from the current sensor unit is output to the outside.

As a conventional technique described in Patent Document 1, a power information transmission unit provided in a distribution board carries out B route communication with a smart meter and either G3-PLC or Wi-SUN. The relationship between the power information transmission unit and the distributed power source is not described.

Here, the control system of the distributed power source such as the cogeneration system directly acquires the power information from the smart meter via the B route communication, or from the smart meter to the HEMS via the B route communication, and further from the HEMS. Assuming that power information is indirectly acquired via specific low power wireless communication or the like, various problems due to wireless communication may occur.

When power information is acquired by a control system on the distributed power source side such as a cogeneration system, the shorter the acquired interval, the higher the accuracy of tracking the power information.

On the other hand, in wireless communication such as Wi-SUN wireless communication and specified low power wireless, communication speed and other restrictions are set according to various standards in order to avoid interference with communication of other devices and secure processing speed of smart meters and HEMS. ing. An example of the default interval for acquiring power information from a smart meter or HEMS that can maintain high output followability to the power used in a house while satisfying various standards is about 30 seconds / time.

Japanese Unexamined Patent Publication No. 2014-075895

However, if the distributed power source is continuously used, the communication (A route communication, B route communication, specific low power wireless communication) of the other device of the own house or the neighboring house interferes, or the communication standby for interference avoidance. If the (carrier sense) exceeds the specified number of times, it is assumed that communication for acquiring power information will fail. Therefore, there is a possibility that the distributed power source cannot acquire the power information at the required frequency only by the communication control acquired at the interval of 30 seconds / time.

The decrease in communication success rate is one of the factors that increase the tracking error with respect to the power consumption by indoor load equipment, but it is difficult to predict the decrease in communication success rate before construction because it varies depending on the installation environment. be.

An object of the present invention is to obtain a power monitoring control device capable of promptly notifying when a tracking error exceeding an allowable range occurs due to an environmental change or the like.

The power monitoring and control device according to the present invention provides power information directly from a smart meter connected to a power service line for drawing a commercial power source indoors, or via a home energy management system that manages energy consumed indoors. A power monitoring and control device for distributed power sources that acquires power consumption, and is an interval that can recognize indoor power consumption transitions within a certain error range, and a communication unit that executes wireless communication with the smart meter. A judgment unit that determines the quality of communication based on the communication status of the communication unit, and when the judgment result of communication by the judgment unit is determined to be defective, the determination result and the status information that causes the defect determination are notified. It has a notification unit and a notification unit.

According to the present invention, the communication unit executes wireless communication with the smart meter at an interval that can recognize the indoor power consumption transition within a certain error range.

The determination unit determines the quality of communication based on the communication status of the communication unit.

When the determination result of the communication frequency by the determination unit is determined to be defective, the notification unit notifies the determination result and the situation information that causes the defect determination.

As a result, when a tracking error exceeding the permissible range occurs due to an environmental change or the like, it is possible to promptly notify.

In the present invention, the communication state is at least one state of the communication success rate, the number of continuous communication failures, the frequency of communication failures, and the radio wave strength at the time of communication in the communication by the communication unit at regular intervals. The determination unit is characterized in that the quality of communication is determined by comparing the numerical value depending on the communication state with the threshold value in advance.

The factor that can grasp the communication state is at least one of the communication success rate, the number of consecutive communication failures, the frequency of communication failures, and the radio wave strength at the time of communication. The quality of communication is judged by comparing with the threshold value.

In the present invention, based on the situation information notified by the notification unit, the communication system in the communication unit is changed, radio interference is eliminated during wireless communication, safety measures when power information is not acquired, and at least wired power information acquisition. It is characterized by providing optimal improvement information from among the improvement information included.

At the time of notification of the notification unit, it is possible to change the communication system in the communication unit, eliminate radio interference during wireless communication, take safety measures when power information is not acquired, and acquire improvement information including at least wired power information acquisition.

The present invention is characterized in that the optimum improvement information is acquired by learning using big data associated with environmental conditions and communication conditions.

Improvement information can be predicted from learning using big data.

The present invention is characterized in that the provided improvement information is information for operating the distributed power source with a constant generated power that does not generate an overcurrent as a safety measure when the power information is not acquired.

When safety cannot be ensured, it is preferable to operate the distributed power source with a constant generated power that does not generate an overcurrent.
The provided improvement information may be information that predicts power information from the operating status of the device managed by HEMS.
The improvement information provided may be information regarding control of equipment managed by HEMS.
The distributed power source may be a storage battery, and the improvement information may be information related to control for storing generated power in the storage battery.
A service may be provided in which the server is notified based on the status information notified by the notification unit, and the repeater is automatically sent based on the notification information.
Based on the status information notified by the notification unit, the information may be information that registers the installation status of the distributed power source in the server and sets the starting point of communication start from the installation status of the surrounding distributed power sources.
Based on the status information notified by the notification unit, the information may be information that registers the installation status of the distributed power source in the server and sets the communication interval from the installation status of the surrounding distributed power sources.

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

The power monitoring and control program according to the present invention is characterized in that the computer is operated as the above-mentioned power monitoring and control device.

It is the schematic of the cogeneration apparatus which concerns on this embodiment, and the house where the cogeneration apparatus is installed. It is a control block diagram of the controller of a cogeneration apparatus. 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 supplied, and the amount of gas used based on daily life (daily lifestyle). It is a functional block diagram for notification control at the time of communication failure in the controller of a cogeneration apparatus. It is a flowchart which shows the communication failure notification control routine executed by the controller of the cogeneration apparatus which concerns on this embodiment. It is the schematic of the cogeneration apparatus which concerns on the modification of this embodiment, and the house where the cogeneration apparatus is installed.

FIG. 1 shows a schematic view of a household fuel cell cogeneration apparatus (hereinafter, simply referred to as “cogeneration apparatus 10” in the present embodiment) as an example of the distributed power supply equipment according to the present embodiment. ing.

The cogeneration device 10 is a system in which a tank unit and a fuel cell unit are installed side by side. In addition, the annex is not limited to being physically adjacent, but means that they cooperate with each other. That is, the tank unit and the fuel cell unit may be installed in a separated state and connected by piping, electrical wiring, or the like.

As shown in FIG. 1, the cogeneration apparatus 10 is installed along the outer wall of the house 12, and an operator goes to the site to execute the installation work.

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

(Configuration of cogeneration apparatus 10)

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

In the hot module, hydrogen is taken out by a fuel processing device, the taken out hydrogen is supplied to the fuel cell stack, and DC power is generated by oxygen in the air.

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

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

The heat storage tank can store the heat recovered through the heat medium at a high temperature, and the stored heat is used at the time of hot water supply.

The radiator dissipates heat from the heat medium. The radiator is not mandatory.

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

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

The hot water supply-related control unit 27 and the power generation-related control unit 29 are connected to the I / O 24, and the operation associated with the hot water supply and power generation is controlled by the controller 14.

Further, a large-scale storage device 30 is connected to the I / O 24, and a processing program related to power generation and hot water supply executed by the controller 14 is stored, and history information based on power generation (for example, in the present embodiment). , Communication interval adjustment information, etc.) are stored.

Further, a remote controller 32 is connected to the I / O 24. The remote controller 32 is installed inside the target house 12 where the cogeneration device 10 is installed, and displays a function for the user to input a command regarding the cogeneration device 10 (and the heat source device 16) and the state of the cogeneration device 10. It has a function to perform.

(Distributed power supply configuration)

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

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

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

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

Assuming that the smart meter 36 side is upstream, the distribution board 40 is provided with a service breaker 42, an earth leakage breaker 46, and a safety breaker 48 in order from the upstream.

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

The earth-leakage circuit breaker 46 is a circuit breaker for quickly detecting and shutting off the electric leakage of the internal wiring of the house 12 and the electric equipment to prevent an electric accident.

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 automatically detects a short circuit or power usage above a certain level due to a failure of an electric device or the like. It is a circuit breaker that protects the circuit.

Here, the generated power generated by the cogeneration device 10 merges with the commercial power supply 34 via the dedicated safety breaker 48A provided on the distribution board 40, and is used as a power source for the electric equipment inside the house 12. Can be done.

Although not shown, the cogeneration device 10 is provided with a power supply line dedicated to the commercial power supply 34 in the event of a power failure, and in a situation where power is not supplied from the commercial power supply 34 due to a power failure, the power generated by the cogeneration device 10 can be used. , It can be supplied via a dedicated outlet for power failure attached to a part of the house 12.

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

As an example, FIG. 3 shows a transition characteristic diagram of the amount of electricity used, the amount of hot water stored in the tank, the amount of hot water supplied, and the amount of gas used based on the living conditions (daily lifestyle). In FIG. 3, as an example, assuming that the rated power generation output of the cogeneration device 10 is 0.7 kW, when the power consumption in the house 12 is 0.7 kW or less, only the power generation output is used, and the power consumption in the house 12 is When it exceeds 0.7 kW, the 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 communication path of the B route from the smart meter 36 to acquire power information such as the current, power, and electric energy of the commercial power supply 34.

In the present embodiment, once every 30 seconds is used as a reference as an interval for acquiring power information from the smart meter 36 via the communication path of the B route. With this interval, it is possible to perform control that roughly follows the power consumption of the house 12, which fluctuates from moment to moment, and approximates the power transition characteristic of FIG. 3 without violating various standards of wireless communication.

By the way, in addition to the communication of the controller 14 of the cogeneration apparatus 10 by the B route, the smart meter 36 also performs other communication such as the communication by the A route.

Therefore, when the controller 14 of the cogeneration apparatus 10 tries to acquire the power information in the communication path of the B route at the interference once every 30 seconds, the communication of the other device of the own house or the neighboring house (A route communication, B). There is a possibility that communication for acquiring power information may fail due to interference (route communication, specific low power wireless communication), or communication standby (carrier sense) for avoiding interference exceeding a specified number of times.

In other words, in the controller 14 of the cogeneration apparatus 10, there is a possibility that the power information cannot be obtained at a required frequency only by the communication control acquired by the interval once every 30 seconds.

Therefore, in the present embodiment, the quality of communication is determined based on the success rate of power information acquisition by the communication path of the B route by the interval once every 30 seconds in the controller 14 of the cogeneration device 10, for example. The monitor and speaker of the remote controller 32, or the notification device such as an external server installed in the management facility that manages the cogeneration device 10 is notified.

FIG. 4 is a functional block diagram for the communication failure notification control in the controller 14 of the cogeneration device 10. Each block in this functional block diagram is classified by function, and in the present embodiment, software in which the CPU 18 operates based on the communication interval adjustment program stored in the ROM 22 based on the communication interval adjustment program. It is executed as control by. The operation program shown in some or all of the functional blocks may be operated by incorporating an IC chip such as an ASIC.

As shown in FIG. 4, the wireless communication unit 50 establishes a communication protocol for acquiring power information via the communication path of the B route of the smart meter 36. By default, the wireless communication unit 50 establishes a communication protocol with a communication interval once every 30 seconds.

The wireless communication unit 50 is connected to the power information acquisition unit 54. When the communication protocol is established (successfully) in the wireless communication unit 50, the power information acquisition unit 54 acquires power information from the smart meter 36 by the communication path of the B route.

The electric power information acquisition unit 54 is connected to the system operation control unit 56 and notifies the system operation control unit 56 of the acquired electric power information.

The system operation control unit 56 calculates the power generation output and the like based on the acquired power information, and sends a control instruction signal to the required controlled device of the cogeneration device 10.

As a result, the cogeneration apparatus 10 can be operated with a power generation output that roughly follows the electric power used in the house 12.

On the other hand, the wireless communication unit 50 is connected to the communication success / failure determination unit 58. The communication success / failure determination unit 58 determines the success / failure of the result of establishment of the communication protocol at the predetermined interval in the wireless communication unit 50.

The communication success / failure determination unit 58 is connected to the communication success rate calculation unit 60, and notifies the communication success rate calculation unit 60 of communication success / failure information (success / failure (binary signal) for each predetermined interval).

The communication success rate calculation unit 60 calculates the communication success rate (communication success rate = 100 × number of successes / number of communications “%”).

The communication success rate information calculated by the communication success rate calculation unit 60 is sent to the comparison unit 66. In the comparison unit 66, the communication success rate is compared with the threshold value read from the threshold value storage unit 68.

The threshold value is set to a success rate assuming that a predetermined communication frequency cannot be secured (when communication fails continuously for a certain period of time at a certain communication frequency).

When the acquired success rate is lower than the threshold value, the pass / fail determination unit 70 determines that the communication is defective and notifies the notification unit 72 of the defect determination information.

The notification unit 72 acquires status information at the time of failure from the communication success / failure determination unit 58, and notifies the notification device (remote controller 32, management server, etc.) of the fact that a communication failure has occurred and the status thereof. do.

The status notification is an operation including error notification, device operation information or power information (power, current value) at the time of error occurrence, or communication status information.

The operation of this embodiment will be described below with reference to the flowchart of FIG.

FIG. 5 is a flowchart showing a communication failure notification control routine executed by the controller 14 of the cogeneration apparatus 10.

In step 100, the default value of the communication interval (in this embodiment, once every 30 seconds) is read out, and the process proceeds to step 102.

In step 102, it is determined whether or not the communication interval has passed, and if affirmative determination is made, the process proceeds to step 104, power information is requested from the smart meter 36 by the communication path of route B, and the process proceeds to step 106. do.

In step 106, it is determined whether or not the power information has been acquired in response to the request in step 104.

If it is determined in step 106 that the acquisition was successful, the process returns to step 102. When the power information is acquired, the operating state of each controlled device is controlled based on the power information.

On the other hand, if it is determined in step 106 that the acquisition has failed, the operating state control of each controlled device based on the above power information is not performed, and the process proceeds to step 108 to read the threshold value for the number of consecutive failures and step 110. Move to.

In step 110, it is determined whether or not the number of consecutive failures exceeds the threshold value.

If a negative determination is made in step 110, it is determined that the number of communication failures does not affect the operating state of the cogeneration apparatus 10, the process returns to step 102, and the above steps are repeated.

If an affirmative determination is made in step 110, it is determined that the number of communication failures affects the operating state of the cogeneration apparatus 10, and the process proceeds to step 112. In step 112, the status information at the time of communication in which the communication has failed is acquired, and then the process proceeds to step 114 to notify that the communication is defective and the status information, and then the process proceeds to step 102. That is, even if the communication failure affects the operating state of the cogeneration apparatus 10, the attempt to establish the communication protocol and the acquisition of the power information by the predetermined communication interval continues. On the other hand, if there is a worker such as during a trial run, the operation may be stopped.

In the present embodiment, the success or failure of communication is determined by comparing the number of consecutive communication failures with the threshold value, but the frequency of failures or the degree of decrease in radio field strength during communication is determined, respectively. The success or failure of communication may be determined by comparing with the threshold value set in.

According to the present embodiment, when communication fails continuously for a predetermined number of times or more, it is determined that there is a problem that interferes with communication, and the communication failure determination information and the status information at the time of communication failure are notified. By doing so, at least, it is possible to inform the user and the administrator that the situation needs to be improved. Since the communication failure may be temporary, even after the communication failure is notified, by continuing the attempt to acquire the power information by the communication by the predetermined communication interval, when the communication failure is improved, the communication failure can be improved. , Power information can be obtained.

In addition to the communication using the B route communication path by the predetermined communication interval, the power information once every 30 minutes acquired by the electric power company on the A route communication path is acquired by another means. Therefore, it is possible to avoid the worst situation such as continuous communication interruption and no power information being obtained.

Indirectly, at least one of the electricity charge, power consumption, reverse power flow power amount, gas charge, and gas usage amount on the previous day (one unit before the preset adjustment period unit) is calculated, and this calculation is performed. The communication interval may be adjusted based on the result.

(Modification example)

In the controller 14 of the cogeneration apparatus 10 according to the present embodiment, the power information is acquired directly from the smart meter 36 installed in the house 12 via the B route.

Here, as shown in FIG. 6, HEMS 62 is constructed in the house 12 according to the modified example.

The HEMS 62 manages and saves electricity and gas used in the house 12 in real time, and is also useful for global warming countermeasures such as carbon dioxide reduction.

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

By the way, in the HEMS 62, the data that is the basis of management is acquired from the smart meter 36. In other words, the HEMS controller 64 of the HEMS 62 acquires power information equivalent to that of the smart meter 36.

Therefore, in the modified example, between the controller 14 of the cogeneration device 10 and the HEMS controller 64 of the HEMS 62, Wi-SUN HAN wireless communication, Wi-SUN Enhanced HAN wireless communication, specific low power wireless communication, LPWA (Low Power). A communication protocol is established by using a communication means such as Wide Area), and power information is acquired from the HEMS controller 64 of the HEMS 62.

The power information acquired from the HEMS controller 64 of the HEMS 62 is equivalent to the power information acquired from the smart meter 36.

Here, an event in which radio interference occurs in the communication path of the B route of the smart meter 36 may also occur in communication with the HEMS controller 64 of the HEMS 62, and the communication status in the present embodiment. The monitoring and notification of the above are also useful means when acquiring power information from the HEMS controller 64 of the HEMS 62.

(Countermeasures after notification of defect judgment)

The main feature of this embodiment is to notify when a failure occurs in communication when acquiring power information by wireless communication from the smart meter 36 via the communication path of route B, and the notification is received. The person will perform troubleshooting such as solving some kind of communication failure or surely acquiring power information. Therefore, the improvement measures after receiving the notification of communication failure are listed below.

(Improvement measure 1) If power information cannot be obtained, request improvement measures (movement of obstacles, equipment such as LTE chips, etc.) in response to status notification.

(Improvement 2) If power information cannot be obtained, replace the 3P2E breaker with a 3P3E breaker and operate with a constant power generation regardless of the indoor power information.

(Improvement 3) If the power information cannot be obtained, replace the 3P2E breaker with the 3P3E breaker and operate with the output calculated from the power information acquired last time.

(Improvement 4) If power information cannot be obtained, install a CT clamp and carry out wiring work.
(Improvement measure 4') When the power information cannot be obtained, the power information is predicted from the operating status of the device by HEMS instead of the B route communication.
(Improvement 4'') If power information cannot be obtained, control the device with HEMS instead of B route communication. For example, it is assumed that the storage battery is controlled to store the generated power of the fuel cell.

(Improvement 5) If power information cannot be obtained, install a device that relays communication indoors. It should be noted that the reception strength and the like are used to determine the cause of communication failure.
(Improvement 5') A service that notifies the server when power information cannot be obtained and automatically sends a repeater based on the notification information.

(Improvement 6) The communication timing of each of the devices connected to the HEMS 62 shown in the modified example of FIG. 6 is controlled to prevent a collision with the communication of the controller 14 of the cogeneration device 10.

(Improvement 7) The communication status of the communication device that communicates using the communication path of the B route of the smart meter 36 is measured, and the communication timing is set. For example, the communication timing can be set by detecting a wireless packet or a carrier.

(Improvement 8) Since communication may collide between a plurality of cogeneration devices 10 depending on the radio wave strength, the surrounding cogeneration devices 10 communicate each other's situation so that the communication timings do not overlap. To.
(Improvement 9) The installation status of the distributed power supply can be registered in the server, and the starting point of communication start can be set from the installation status of the surrounding distributed power sources.
(Improvement 10) The installation status of the distributed power source can be registered in the server, and the communication interval can be set from the installation status of the surrounding distributed power sources.

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, the smart meter 36 and the like can be used. The present invention is applicable to all configurations that acquire power information and control the amount of power generation.

10 Cogeneration equipment 12 House 14 Controller 15 Power line 16 Heat source unit 18 CPU
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 circuit breaker 48 Safety breaker 48A Safety breaker 50 Wireless Communication department (communication department)
54 Power information acquisition unit 56 System operation control unit 58 Communication success / failure judgment unit 60 Communication success rate calculation unit (success rate calculation unit)
62 HEMS
64 HEMS controller 66 Comparison unit 68 Threshold storage unit 70 Good / bad judgment unit (judgment unit)
72 Notification unit (notification unit)

Claims (13)

Power monitoring control of distributed power sources that acquire power information directly from a smart meter connected to a power service line for drawing commercial power indoors, or via a home energy management system that manages the energy consumed indoors. It ’s a device,
A communication unit that executes wireless communication with the smart meter with an interval that can recognize indoor power consumption transitions within a certain error range.
A determination unit that determines the quality of communication based on the communication status of the communication unit, and
When the judgment result of the communication by the judgment unit is determined to be defective, the notification unit that notifies the determination result and the situation information that causes the defect determination, and the notification unit.
Power monitoring and control device with. The communication state is at least one state of the communication success rate, the number of continuous communication failures, the frequency of communication failures, and the radio wave intensity at the time of communication in the communication by the communication unit at regular intervals. The power monitoring control device according to claim 1, wherein the quality of communication is determined by comparing a numerical value depending on a communication state with a threshold value in advance. Based on the status information notified by the notification unit, the communication system in the communication unit is changed, radio interference is eliminated during wireless communication, safety measures are taken when power information is not acquired, and improvement information including at least wired power information acquisition. The power monitoring control device according to claim 1 or 2, which provides optimum improvement information from among them. The power monitoring control device according to claim 3, wherein the optimum improvement information is acquired by learning using big data associated with environmental conditions and communication conditions. The electric power according to claim 3 or 4, wherein the provided improvement information is information for operating the distributed power source with a constant generated electric power that does not generate an overcurrent as a safety measure when the electric power information is not acquired. Monitoring and control device. The power monitoring control device according to claim 3 or 4, wherein the provided improvement information is information for predicting power information from the operating status of the device managed by HEMS. The power monitoring control device according to claim 3 or 4, wherein the improvement information provided is information related to control of a device managed by HEMS. The power monitoring and control device according to claim 7, wherein the distributed power source is a storage battery, and the improvement information is information related to control for storing generated power in the storage battery. The power monitoring control device according to claim 1 or 2, which provides a service of notifying a server based on the status information notified by the notification unit and automatically sending a repeater based on the notification information. Claim 1 or claim, which is information for registering the installation status of the distributed power source in the server based on the status information notified by the notification unit and setting the starting point of communication start from the installation status of the surrounding distributed power sources. Item 2. The power monitoring and control device according to item 2. Claim 1 or claim 1, which is information for registering the installation status of the distributed power source in the server based on the status information notified by the notification unit and setting the communication interval from the installation status of the surrounding distributed power sources. 2. The power monitoring and control device according to 2. The distributed power source
Any of claims 1 to 11, which is a fuel cell cogeneration system provided with a power generation unit that generates electricity 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,
Operate as the power monitoring control device according to any one of claims 1 to 12.
Power monitoring and control program.

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