JP2020166844A - Distributed power generation system and repair charge display method capable of displaying repair charge - Google Patents

Abstract

To provide criteria for selecting whether users perform repair procedures when power generators break down.SOLUTION: A distributed power generation system includes a distributed power generator, a controller for controlling operation of the distributed power generator, and a heat source machine. The controller includes: a failure detection unit that detects the presence or absence of a failure in the distributed power generator; and a display control unit that controls a display unit to display a repair charge for repairing of a failure when the failure occurs in the distributed power generator.SELECTED DRAWING: Figure 5

Description

The present invention relates to a distributed power generation system capable of displaying a repair fee and a repair fee display method.

Patent Document 1 discloses a technique in which a host device remotely monitors a power generation device such as a cogeneration system to perform failure diagnosis, maintenance, inspection, maintenance, and the like. In Patent Document 1, terminal devices are provided corresponding to each of the plurality of power generation devices, and each terminal device transmits the operating status of each power generation device to the host device. The host device determines the state of each cogeneration system based on the operating status transmitted from each terminal device. As a result, it is possible to appropriately and economically determine the failure of each power generation device.

Japanese Unexamined Patent Publication No. 2003-131730

In Patent Document 1, although a failure of each power generation device can be detected by a host device, a method of dealing with the user when a failure occurs has not been studied.
For example, when a failure occurs in a power generation device, a serviceman visits the user's house where the power generation device is installed and diagnoses the power generation device as the first procedure. In this case, a visit fee is incurred according to the visit by the service person and the diagnosis of the faulty part and the condition. Furthermore, as a result of the diagnosis, if repair is necessary, the repair fee will be presented by the serviceman. When the power generation device breaks down in this way, the serviceman is not given the criteria for selecting whether or not to carry out the repair procedure, and regardless of whether or not the power generation device is repaired. You have to pay the visit fee according to your visit. Furthermore, the repair fee cannot be ascertained without going through the procedure of visiting the serviceman. Therefore, there is an aspect that the convenience of the user is not considered.

Further, the management side of the power generation device is also complicated because the serviceman visits the power generation device and diagnoses the faulty part and the state regardless of whether or not the user repairs the power generation device.

Therefore, the present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a standard for a user to select whether or not to perform a procedure for repair in the event of a failure of a power generation device.

The present invention is a distributed power generation system including a distributed power generation device, a control device for controlling the operation of the distributed power generation device, and a heat source machine.
The control device
A failure detection unit that detects the presence or absence of a failure in the distributed power generation device, and
The point is that when a failure occurs in the distributed power generation device, it has a display control unit that controls so that the repair fee required for repairing the failure is displayed on the display unit.

According to the above-mentioned feature configuration, when a failure occurs in the distributed power generation device, the repair fee is displayed on the display unit, so that the user can quickly grasp the repair fee for the failure. Then, after considering the repair fee, the user can select whether or not to actually repair and whether or not to perform various procedures associated with the repair. That is, since the user can use the displayed repair fee as a selection criterion for whether or not to perform repair or the like, the convenience of the user is improved.

In addition, since the repair fee is displayed on the display unit without the visit by the service person and the diagnosis of the faulty part and the state, the visit cost incurred by the visit and the diagnosis can be reduced.
Further, the side managing the distributed power generation device can also perform the work based on the user's judgment as to whether or not to perform the repair. Therefore, when it is unclear whether or not to repair, it is possible to reduce complicated work such as visiting a facility where a distributed power generation device in which a failure has occurred is installed and diagnosing a failure location.

Further characteristic configurations of the distributed power generation system according to the present invention are
The display control unit is communicably connected to the control device, receives the repair fee from the system server that manages the operating state of the distributed power generation device, and controls to display the repair fee on the display unit. There is a point to do.

According to the above feature configuration, the display control unit can acquire a repair fee from the system server and display it. The system server has, for example, a repair fee table in which repair fees are associated with each of the details of a plurality of failures, and the repair fee is calculated based on the repair fee table. Alternatively, the system server obtains a repair fee from, for example, a repair company that repairs the failure.

Further characteristic configurations of the distributed power generation system according to the present invention are
The display control unit is provided in the repair company that repairs the failure, obtains the repair fee from the repair company server communicably connected to the control device, and displays the repair fee on the display unit. It is in the point of controlling to.

According to the above feature configuration, the display control unit can acquire the repair fee from the repair company server and display it. The repair company server has, for example, a repair fee table in which repair fees are associated with each of the details of a plurality of failures, and calculates the repair fee based on the repair fee table.

Further characteristic configurations of the distributed power generation system according to the present invention are
The control device
A repair charge table storage unit that stores a repair charge table in which repair charges are associated with each of multiple failures,
It has a repair fee acquisition unit that acquires the repair fee according to the failure based on the repair fee table.
The display control unit acquires the repair fee from the repair fee acquisition unit and controls the display so as to display the repair fee on the display unit.

According to the above-mentioned feature configuration, since the control device has a repair fee table associated with the repair fee for each failure, the repair fee can be easily acquired and displayed.

Further characteristic configurations of the distributed power generation system according to the present invention are
The repair fee includes at least one of the repair fee and the parts cost associated with the repair.

As in the above characteristic configuration, the repair fee is composed of at least one of the repair fee and the parts cost, and if these are included in the repair fee, a generally reasonable repair fee can be obtained. In addition, the repair fee includes the cost according to the repair work content and the repair work time.

Further characteristic configurations of the distributed power generation system according to the present invention are
The display control unit displays on the display unit a first option of stopping the distributed power generation device and using the heat source unit independently, and a second selection of repairing the failure of the distributed power generation device. Control to
The control device
The point is that it has a selection reception unit that accepts any of the above selections.

According to the above-mentioned feature configuration, the user either repairs the failure of the distributed power generation device or stops the distributed power generation device and uses the heat source unit independently, taking into consideration the displayed repair fee. Can be selected. That is, by presenting the repair fee, the user can use the repair fee as a criterion for selecting whether or not to perform the procedure associated with the repair, which improves the convenience of the user.

For example, if the repair fee is low, the user can choose to repair and reuse the distributed generator. On the other hand, for example, when the repair fee is high, the user can choose not to repair the distributed power generation device but to use the heat source unit independently.
In addition, regardless of whether the user wants or does not want to repair the failure of the distributed power generation device, a visit by a serviceman and a visit fee are incurred depending on the diagnosis of the failure location and condition. , The visit cost can be reduced.

Further characteristic configurations of the distributed power generation system according to the present invention are
The display control unit replaces a failed distributed power generation device with a new distributed power generation device, or replaces a failed distributed power generation device with a new distributed power generation device and a new distributed power generation device from an existing heat source device. Controlled to display the third choice for replacement to the heat source unit on the display.
The control device
The point is that it has a selection reception unit that accepts any of the above selections.

According to the above feature configuration, the user selects either replacement with a new distributed power generation device, replacement with a new distributed power generation device, or replacement with a new heat source machine in consideration of the displayed repair fee. It is possible. In addition, the user refers to the repair fee, and whether or not to carry out the procedure associated with the repair, whether or not to replace with a new distributed power generation device, and whether or not to replace with a new distributed power generation device and a new heat source machine. It can also be used as a reference. Therefore, the convenience of the user is improved.

Further characteristic configurations of the distributed power generation system according to the present invention are
The control device
When the first selection is accepted, the point is that the distributed power generation device is stopped and the mode switching unit for switching to the mode in which the heat source machine is used independently is provided.

According to the above-mentioned feature configuration, since the mode switching unit switches to the mode in which the heat source machine is used independently, it is possible to omit the work of the serviceman visiting the site and switching to the mode in which the heat source machine is used independently.

Further characteristic configurations of the distributed power generation system according to the present invention are
The display control unit determines a predicted first energy charge, which is a cost for energy consumption including at least one of gas and electricity when the distributed power generation device is stopped and the heat source unit is used alone. The point is to control so that it is displayed on the display unit.

According to the above-mentioned feature configuration, the user can grasp the predicted first energy charge when the distributed power generation device is stopped and the heat source unit is used independently. Therefore, the user can obtain the first energy charge as a criterion for selecting whether or not to perform the procedure associated with the repair, which improves the convenience of the user. The first energy charge is a predicted energy charge including at least one of gas and electricity when the heat source machine is used alone.

When the heat source unit is used alone, the power generated by the distributed power generation device is used in the facility, and the profits enjoyed by not purchasing the grid power, the profits obtained by reversing the generated power, and the distributed power generation By using the equipment, the profit that the price of electricity purchased from the grid power was cheaper, and by using the distributed power generation equipment, the profit that the price of the gas charge purchased from the gas company was cheaper can be obtained. It disappears. In consideration of these points and the like, the user can determine whether or not to perform the repair by referring to the first energy charge.

Further, by displaying not only the repair fee but also the first energy fee, the user can select whether or not to perform the procedure associated with the repair by weighing the repair fee and the first energy fee.
For example, if the user does not repair, the first energy fee will be paid, but by paying the repair fee and repairing, the above-mentioned various benefits can be obtained, and whether or not the repair fee can be recovered, etc. Can be judged. Further, the first energy charge may be used as a criterion for whether or not at least one of the distributed power generation device and the heat source device is replaced with a new one.

Further characteristic configurations of the distributed power generation system according to the present invention are
The first energy charge is based on a first energy charge table different from the second energy charge table.
The first energy price list is a price list of energy including at least one of gas and electricity when the distributed power generation device is stopped and the heat source machine is used alone.
The second energy price list is a price list of energy including at least one of gas and electricity when the distributed power generation device is operated and the heat source machine uses heat from the distributed power generation device. There is a certain point.

The energy price list may differ depending on whether the distributed power generation device is operated to operate the heat source unit or the distributed power generation device is stopped and the heat source unit is used independently. According to the above feature configuration, the first energy charge is calculated more accurately because it is based on the first energy charge table when the distributed power generation device is stopped and the heat source unit is operated.

Further characteristic configurations of the distributed power generation system according to the present invention are
The display control unit is communicably connected to the control device, receives the first energy charge from a system server that manages the operating state of the distributed power generation device, and displays the first energy charge on the display unit. It is in the point of controlling to do so.

According to the above-mentioned feature configuration, the first energy charge when the distributed power generation device is stopped and the heat source unit is used independently can be acquired from the system server and displayed. The system server holds, for example, a first energy charge table, and calculates the first energy charge based on the first energy charge table. Alternatively, the system server obtains the first energy charge table from the energy company server of the energy company that sells energy including gas and electricity, and calculates the first energy charge.

Further characteristic configurations of the distributed power generation system according to the present invention are
The display control unit is provided in an energy company that supplies energy to a facility including the heat source unit, acquires the first energy charge from an energy company server communicably connected to the control device, and obtains the first energy charge. The point is to control the charge to be displayed on the display unit.

According to the above feature configuration, the display control unit can acquire the first energy charge from the energy company server and display it. The energy company server has, for example, a first energy charge table in which the first energy charge is associated with each energy usage amount, and calculates the first energy charge based on the first energy charge table.

Further characteristic configurations of the distributed power generation system according to the present invention are
The control device
An energy charge table storage unit that stores a first energy charge table which is an energy charge table including at least one of gas and electricity when the distributed power generation device is stopped and the heat source unit is used independently.
Based on the first energy charge table, it has an energy charge acquisition unit that acquires the first energy charge according to the energy consumption.
The display control unit acquires the first energy charge from the energy charge acquisition unit and controls the display to display the first energy charge on the display unit.

According to the above-mentioned feature configuration, since the control device has the first energy charge table, the first energy charge can be easily acquired and displayed.

Further characteristic configurations of the distributed power generation system according to the present invention are
When the display control unit repairs the distributed power generation device in which the failure has occurred, the repaired distributed power generation device is operated, and the heat from the distributed power generation device repaired by the heat source machine is used. The second energy charge, which is the cost for the consumption of energy including at least one of gas and electricity, is controlled to be displayed on the display unit.

According to the above feature configuration, the user operates the distributed power generation device in addition to the first energy charge when the heat source machine is used alone, and the heat source machine uses the heat generated by the power generation operation of the distributed power generation device. It is possible to grasp the second energy charge when there is. Therefore, the user either repairs and reuses the distributed power generation device by weighing the first energy charge and the second energy charge, or stops the distributed power generation device and uses the heat source unit independently. It is possible to judge whether it is, and the convenience of the user is improved.

In addition to the repair fee, the first and second energy charges are displayed, so that the repair charge, the first energy charge, and the second energy charge are weighed and the user performs the procedure for repair. You can choose whether or not. That is, it can be seen that the user pays the first energy fee if the repair is not performed, and pays the repair fee and the second energy fee if the repair is performed. Since the second energy charge is generally cheaper than the first energy charge, it is possible to judge whether or not the repair charge can be recovered even if the repair is performed by paying the repair charge.
Further, the second energy charge may be used as a criterion for whether or not at least one of the distributed power generation device and the heat source device is replaced with a new one.

Further characteristic configurations of the distributed power generation system according to the present invention are
The display control unit is communicably connected to the control device, receives a front second energy charge from a system server that manages the operating state of the distributed power generation device, and displays the second energy charge on the display unit. It is in the point of controlling to do so.

According to the above feature configuration, the second energy charge can be acquired from the system server and displayed.
The system server holds, for example, a second energy charge table, and calculates the second energy charge based on the second energy charge table. Alternatively, the system server obtains a second energy charge from, for example, an energy company server of an energy company that sells energy including gas and electricity.

Further characteristic configurations of the distributed power generation system according to the present invention are
The display control unit is provided in an energy company that supplies energy to a facility including the heat source unit, acquires the second energy charge from an energy company server communicably connected to the control device, and obtains the second energy charge. The point is to control the charge to be displayed on the display unit.

According to the above feature configuration, the display control unit can acquire the second energy charge from the energy company server and display it. The energy company server has, for example, a second energy charge table in which energy charges are associated with each energy usage amount, and calculates the second energy charge based on the second energy charge table.

Further characteristic configurations of the distributed power generation system according to the present invention are
The control device
An energy price list that stores a second energy price list, which is a price list of energy including gas and electricity when the distributed power generation device is operated and the heat source machine uses heat from the distributed power generation device. Memory and
Based on the second energy charge table, it has an energy charge acquisition unit that acquires a second energy charge according to the amount of energy consumed.
The display control unit acquires the second energy charge from the energy charge acquisition unit and controls the display to display the second energy charge on the display unit.

According to the above-mentioned feature configuration, since the control device has the second energy charge table, the second energy charge can be easily acquired and displayed.

Further characteristic configurations of the distributed power generation system according to the present invention are
The second energy charge is predicted based on the past record of energy utilization including at least one of gas and electricity in the facility where the distributed power generation system is installed.

According to the above characteristic configuration, the second energy charge is predicted based on the past energy usage record, and therefore is a value more suitable for the future actual condition of the facility.

Further characteristic configurations of the distributed power generation system according to the present invention are
When the distributed power generation device in which a failure has occurred is replaced with a new distributed power generation device, the display control unit operates the new distributed power generation device, and the existing heat source unit is released from the new distributed power generation device. Operate a new distributed power generation device when heat is used, or when a failed distributed power generation device or an existing heat source device is replaced with a new distributed power generation device or a new heat source device. The third energy charge, which is the cost for the energy consumption including at least one of gas and electricity, when the new heat source machine uses the heat from the new distributed power generator, is displayed above. The point is to control so that it is displayed on the unit.

According to the above-mentioned feature configuration, the user operates the new distributed power generation device when the user replaces the new distributed power generation device with a new distributed power generation device or a new distributed power generation device and a new heat source device. It is possible to grasp the third energy charge when the heat is used by the existing heat source machine or the new heat source machine. In general, the new distributed power generation device has good power generation efficiency, and the new heat source machine has good energy efficiency, so that the amount of gas and electricity used can be suppressed. Therefore, the third energy charge is lower than the energy charge when the distributed power generation device and the heat source machine that have deteriorated over time are used. Therefore, the user can grasp how much the energy charge will be cheaper than before by the exchange by presenting the third energy charge.
In addition, the heat source machine 30 uses the repair fee, the first energy fee when the heat source machine is used alone, and the heat generated by the power generation operation of the repaired distributed power generation device 20 after repairing and operating the failed distributed power generation device 20. If the user is presented with a second energy charge when used by, and a third energy charge when replaced with a new distributed power generator and heat source unit, the user will be charged a repair fee, first to first. 3 Energy charges can be weighed. As a result, the distributed power generation device can be repaired and reused, the distributed power generation device can be stopped and the heat source unit can be used independently, the new distributed power generation device can be replaced, or a new distributed power generation device can be used. It is possible to determine whether to replace the device and the heat source machine, which improves user convenience.

Further characteristic configurations of the distributed power generation system according to the present invention are
The display control unit is the cost of replacing the failed distributed power generation device with a new distributed power generation device, or the new distributed power generation device from the failed distributed power generation device and the existing heat source device. The point is that the replacement fee, which is the cost when the machine is replaced with a new heat source machine, is controlled to be displayed on the display unit.

According to the above-mentioned feature configuration, the user can grasp the replacement fee when the replacement is made with a new distributed power generation device or when the replacement is made with a new distributed power generation device and a new heat source device.
When the repair fee, the first to third energy charges, and the replacement fee are presented to the user, the user can weigh the repair fee, the first to third energy charges, and the replacement fee. This makes it possible to determine whether to repair and reuse the distributed power generator, stop the distributed power generator and use the heat source unit alone, or replace it with a new distributed power generator and heat source unit. User convenience is improved.

The present invention is a repair fee display method in a distributed power generation system including a distributed power generation device, a control device for controlling the operation of the distributed power generation device, and a heat source machine, and the characteristic configuration thereof is as follows.
The control device
A step of detecting the presence or absence of a failure in the distributed power generation device, and
When a failure occurs in the distributed power generation device, it has a step of controlling the repair fee required for repairing the failure to be displayed on the display unit.

Further characteristic configuration of the repair fee display method according to the present invention is
The control device
It has a step of displaying a first energy charge, which is a cost for energy consumption including at least one of gas and electricity, on the display unit when the distributed power generation device is stopped and the heat source machine is used alone. At the point.

This is the overall configuration of the distributed power generation system. This is an example of a repair fee table. It is a block diagram of a distributed power generation device and a heat source machine. It is a block diagram of a control device. This is a display example on the display unit. It is a flowchart which shows the flow of the repair charge display method. It is another block diagram of the control device. Another overall configuration of a distributed power generation system. This is an example of an energy price list. This is an example of an energy price list. This is an example of an energy price list. This is an example of an energy price list. This is an example of energy usage history. This is a display example on the display unit. It is a flowchart which shows the flow of the repair charge display method and the energy charge display method. It is another block diagram of the control device. This is a display example on the display unit. This is a display example on the display unit. This is an example of the price of a distributed power generator. This is an example of the price of a heat source machine. This is an example of a price list for calculating the replacement cost.

[First Embodiment]
The distributed power generation system according to the first embodiment of the present invention will be described below. When a failure occurs in the distributed power generation device provided in the distributed power generation system according to the present embodiment, the repair fee is displayed on a display unit such as a remote controller (control device below) for driving the device. .. Therefore, the user can quickly grasp the repair fee for the failure and can use the repair fee as a selection criterion for whether or not to perform repair or the like, which improves the convenience of the user.

(1) Configuration of Distributed Power Generation System (1-1) Overall Configuration As shown in FIG. 1, the distributed power generation system 1 includes a plurality of distributed power generation devices 20 (20a, 20b ...), Which will be described later. Facility 3 (3a, 3b ...), a system server 5 that manages the operating state of the distributed power generation device 20 of each facility 3, and a repair company 7 that handles repairs when the distributed power generation device 20 fails. And are included.

The control device 10 (10a, 10b ...) Of the distributed power generation device 20 (20a, 20b ...), The system server 5, and the repair company server 70 of the repair company 7, which will be described later, form a network 8. It is connected so that it can communicate via.
Hereinafter, the facilities 3a, 3b ... Are collectively referred to as facility 3. When the control device 10, the distributed power generation device 20, the heat source machine 30, and various devices 40, which will be described later, are included in the facility 3a, a subscript a is added to the code number, and the code of these configurations is the code of each facility 3. It is attached in the same way.

(A) Facility Facility 3 includes a distributed power generation device 20 that generates power by receiving fuel gas, air, and the like, a heat source machine 30, various devices 40 such as home appliances, a distributed power generation device 20, and a heat source machine. It has a control device 10 for operating the 30 and various devices 40 and grasping the operating status. The control device 10, the distributed power generation device 20, the heat source machine 30, and various devices 40 will be described later.

(B) Repair company The repair company 7 has a repair person who can deal with the failure of the distributed power generation device 20, and when the distributed power generation device 20 fails, the repair person is dispatched for repair. Get the job done. The repair company 7 has a repair company server 70 that manages various data in the repair company 7, communication with the outside, and the like. The repair company server 70 has a repair company control unit 70a and a repair charge table DB 70b (repair charge table storage unit) that stores a repair charge table of charges required for repair (where, DB is a database). Means. The same shall apply hereinafter.) When a repair fee for a certain failure is requested from the outside, the repair company control unit 70a reads the repair fee for the failure from the repair fee table DB 70b and transmits it to the outside.

As shown in FIG. 2, the repair charge table DB 70b stores a repair charge table in which repair charges are associated with each of a plurality of failures. In the repair fee table of FIG. 2, the failure No., the content of the failure, and the repair fee required to repair the failure are associated with each other. For example, a failure when an abnormal temperature is detected in a reformer is a reformer temperature abnormality. According to the repair fee table, the repair fee is 200,000 in the case of a reformer temperature abnormality (failure No. = "1"). Failure No = "1" is, for example, an error code.

(C) System server The system server 5 manages various operating states such as the amount of power generated by each distributed power generation device 20 and the presence or absence of failure. Further, the system server 5 has a repair fee acquisition unit 5a for acquiring a repair fee when the distributed power generation device 20 fails.
The repair fee acquisition unit 5a acquires the failure location of the distributed power generation device 20 from the failure detection unit 11 described later of the control device 10, and causes the repair company control unit 70a of the repair company server 70 to perform repair based on the failure location. Request a fee. The repair company control unit 70a reads out the repair charge based on the failure location based on the repair charge table of the repair charge table DB 70b and transmits it to the repair charge acquisition unit 5a. The repair fee acquisition unit 5a acquires a repair fee based on the failure location from the repair company control unit 70a and transmits it to the display control unit 13 described later. The display control unit 13 receives the repair fee from the repair fee acquisition unit 5a and displays it on the display unit 21 of the control device 10.

The configuration of each part of the facility 3 will be further described.
(1-2) Distributed Power Generation Device First, the distributed power generation device 20 will be described. As shown in FIG. 3, the distributed power generation device 20 includes a power generation unit 130a, a hot water storage tank 130b, and a power conversion device 120.

The electric power generation unit 130a basically generates heat by reacting fuel gas obtained by reforming raw fuel (for example, city gas 13A) with oxygen gas to generate heat, and heat of combustion exhaust gas discharged from the fuel cell 50. A heat exchanger 60 that recovers the fuel, a water purifier 75 that recovers and purifies the condensed water from the combustion exhaust gas after heat recovery by the heat exchanger 60, and a modification that recovers the condensed water purified by the water purifier 75. The quality water tank 80, the water supply unit 86 capable of supplying water to the reformed water tank 80 independently of the condensed water, and the ventilation fan 66a and the ventilation fan for lowering the housing temperature of the distributed power generation device 20. It includes a ventilator 66 including a detector 111 that measures the actual number of revolutions of 66a.

The fuel cell 50 is generated by the reformer 52 that steam reforms the raw fuel supplied through the raw material and fuel flow path 51 to generate fuel gas, and the reformer 52 via the fuel gas flow path 53. It has an anode 55 to which the fuel gas is supplied, a cathode 56 to which air (an example of oxygen gas) is supplied via the air flow path 54, and an electrolyte 57 interposed between the anode 55 and the cathode 56. The fuel gas and air supplied are reacted to generate electricity. The anode 55, the cathode 56, and the electrolyte 57 form one fuel cell 50a, and the plurality of fuel cell cells 50a form a cell stack.

The fuel cell 50 includes a combustion unit 58 to which the fuel gas and air discharged after being used for the power generation reaction from the anode 55 and the cathode 56, respectively, are supplied, and the combustion unit 58 remains in the fuel gas. The fuel component is burned to generate combustion exhaust gas.

As will be described later, water is supplied to the reformer 52 from the reforming water tank 80 via the water supply path 82, and the reformer 52 is supplied from the reforming water tank 80. Water is used for steam reforming of raw materials and fuels.

Further, the raw material / fuel flow path 51 is provided with a raw material fuel pump 41 for supplying a predetermined amount of raw material fuel to the reformer 52, and the detector 101 measures the supply amount of the raw material fuel pump 41. ..
The air flow path 54 is provided with an air blower 43 for supplying a predetermined amount of air to the cathode 56, and the detector 103 measures the amount of air supplied by the air blower 43.

The combustion exhaust gas discharged from the fuel cell 50 is supplied to the heat exchanger 60 via the exhaust gas supply path 61, and the combustion exhaust gas after heat recovery is exhausted through the exhaust gas discharge path 62. Then, the heat exchanger 60 is supplied with hot water from the hot water storage tank 130b via a circulation path 63 for circulating hot water between the hot water storage tank 130b for storing hot water and the heat exchanger 60. The heat exchanger 60 is adapted to exchange heat between the combustion exhaust gas discharged from the fuel cell 50 and hot water. The circulation path 63 includes a circulation pump 64 that supplies hot water from the hot water storage tank 130b to the heat exchanger 60, and a radiator 65 that includes a heat radiating fan 65a and a detector 107 that measures the actual rotation speed of the heat radiating fan 65a. , A temperature sensor (not shown) is provided. Further, the hot water storage tank 130b is provided with a hot water outlet 131 for discharging the hot water in the hot water storage tank 130b and a water supply channel 132 for supplying water to the hot water storage tank 130b according to the hot water discharge. The detector 105 measures the amount of hot water supplied by the circulation pump 64.

The reforming water tank 80 recovers condensed water from the combustion exhaust gas after heat recovery by the heat exchanger 60. Further, in the present embodiment, the condensed water supplied to the reforming water tank 80 is purified by the water purifier 75. Specifically, the condensed water recovery path from the combustion exhaust gas flowing through the exhaust gas discharge path 62. The condensed water is collected in the water purifier 75 via the water purifier 75, and the condensed water purified by the water purifier 75 is collected in the reformed water tank 80 via the condensed water recovery path 81. The reforming water tank 80 and the reformer 52 are connected by a water supply path 82 and a water supply path 85, and a reforming water pump provided between the water supply path 82 and the water supply path 85. By the operation of 83, the condensed water (and the water supplied from the water supply unit 86) stored in the reforming water tank 80 can be supplied to the reformer 52. The reforming water tank 80 is provided with a water level detector 84 so that the water level in the reforming water tank 80 can be detected.
Further, water can be supplied to the reforming water tank 80 from the water supply unit 86 independently of the condensed water.

Further, the distributed power generation device 20 includes a power conversion device 120. The power conversion device 120 uses the DC voltage of the DC power generated by the distributed power generation device 20 as the commercial power of the commercial power system so that the distributed power generation device 20 and the commercial power system can be connected to each other. Converts to AC voltage (system power). Further, the power conversion device 120 is provided with a detector 121 that detects the conversion efficiency from the DC voltage to the AC voltage.

As described above, in order to detect the failure location of the distributed power generation device 20, for example, detectors such as detectors 101, 103, 105, 107, 111 and a water level detector 84 are provided. The failure detection unit 11, which will be described later, detects the failure location of the distributed power generation device 20 based on the detection results from these detectors. However, these detectors are merely examples, and detectors can be arranged in other parts so as to be able to detect failures in all parts of the distributed power generation device 20.

(1-3) Heat source machine As shown in FIG. 3, the hot water outlet 131 for discharging hot water from the hot water storage tank 130b is connected to the hot water supply passage 133 via a water supply switching three-way valve 31. The heat source machine 30 is provided in the hot water supply passage 133, and receives hot water from the hot water storage tank 130b via the water supply switching three-way valve 31. The water supply switching three-way valve 31 is a valve capable of adjusting the flow rate of hot water from the hot water storage tank 130b and the amount of water supplied from the water supply channel 132.
The heat source machine 30 has a heat exchanger h that heats hot water flowing through the hot water supply passage 133, a burner b that heats the heat exchanger h, and a fan f that supplies combustion air to the burner b.
The hot water outlet 131 is provided with a hot water storage outlet temperature sensor (not shown) that detects the temperature of hot water that is discharged from the hot water storage tank 130b and flows through the hot water channel 131. Further, the hot water supply passage 133 is provided with a hot water supply temperature sensor (not shown) that detects the temperature of hot water flowing out of the heat source machine 130 and flowing through the hot water supply passage 133.

The heat source machine 130 is controlled by the operation control unit 22 of the control device 10 described later based on the temperature of the hot water flowing through the hot water supply passage 131 and the temperature of the hot water flowing through the hot water supply passage 133, and is desired from the hot water supply passage 133. Supply hot water at the temperature of.
For example, the operation unit (not shown) of the control device 10 receives a desired temperature of hot water supplied from the hot water supply path 133 from the user. When the temperature of the hot water supplied from the hot water storage tank 130b via the hot water outlet 131 is lower than the desired temperature, the operation control unit 22 operates the heat exchanger h, the burner b, the fan f, etc. to obtain the hot water. Heat to the temperature of. In this case, the operation control unit 22 can control the water supply switching three-way valve 31 so as not to accept the water supply from the water supply channel 132 and to supply the hot water from the hot water storage tank 130b to the heat source machine 30.

Further, the operation control unit 22 stops the operation of the heat exchanger h, the burner b, the fan f, etc. when the temperature of the hot water supplied from the hot water storage tank 130b via the hot water outlet 131 is higher than the desired temperature. Further, the operation control unit 22 controls the water supply switching three-way valve 31 so that the temperature of the hot water supplied from the water supply channel 132 becomes a desired temperature. That is, the operation control unit 22 can adjust the amount of water supplied from the water supply channel 132 added to the hot water from the hot water storage tank 130b to lower the hot water to a desired temperature.
When the temperature of the hot water supplied from the hot water storage tank 130b via the hot water outlet 131 is a desired temperature, the operation control unit 22 supplies the hot water from the hot water storage tank 130b as it is from the hot water supply channel 133. In this case, the operation control unit 22 stops the operation of the heat exchanger h, the burner b, the fan f, and the like. Further, the operation control unit 22 can control the water supply switching three-way valve 31 so that the water supply from the water supply channel 132 is not received and the hot water from the hot water storage tank 130b is supplied to the heat source machine 30.

(1-4) Control device As shown in FIG. 4, the control device 10 includes a failure detection unit 11, a display control unit 13, a selection reception unit 15, a mode switching unit 17, a display unit 21, and an operation control unit. It has 22 and. Further, the control device 10 has an operation unit (not shown), and receives various inputs from the user such as operation and stop of the distributed power generation device 20 and the temperature of hot water supply from the hot water supply path 133. The control device 10 of the present embodiment is composed of, for example, a remote controller or the like that can accept various inputs from the user.

The operation control unit 22 operates and stops the distributed power generation device 20 and the like, supplies and discharges water to the hot water storage tank 130b, supplies hot water to the heat source machine 30 via the hot water passage 131, and supplies water to the heat source machine 30. It controls the supply of hot water through the hot water, the heating of hot water in the heat source machine 30, and the like.

If the detection results from the detectors 101, 103, 105, 107, 111, the water level detector 84, etc. indicate an abnormal value, the failure detection unit 11 is provided with a detector in which the abnormal value is detected. Is specified as a failure location of the distributed power generation device 20. The faulty part is represented as, for example, an error coat.
The failure detection unit 11 transmits the failure location of the distributed power generation device 20 to the repair fee acquisition unit 5a.
The repair fee acquisition unit 5a acquires the repair fee based on the faulty part and transmits it to the display control unit 13. The display control unit 13 receives the repair charge from the repair charge acquisition unit 5a and controls the display unit 21 to display the repair charge.
As shown in FIG. 5, the display unit 21 displays, for example, 30,000 yen as a repair fee according to the failure location detected by the failure detection unit 11.

When a failure occurs in the distributed power generation device 20, the repair fee is displayed on the display unit 21, so that the user can quickly grasp the repair fee for the failure. Then, after considering the repair fee, the user can select whether or not to actually repair and whether or not to perform various procedures associated with the repair. That is, since the user can use the displayed repair fee as a selection criterion for whether or not to perform repair or the like, the convenience of the user is improved.
Further, since the repair fee is displayed on the display unit 21 without the visit by the service person and the diagnosis of the faulty part and the state, the visit cost incurred by the visit and the diagnosis can be reduced.

Further, the side managing the distributed power generation device 20 can also perform the work based on the user's judgment as to whether or not to perform the repair. Therefore, when it is unclear whether or not to repair, it is possible to reduce complicated work such as visiting the facility 3 in which the distributed power generation device 20 in which the failure has occurred is installed and diagnosing the failure location.

In addition, various procedures associated with repair include, for example, detailed failure diagnosis of the failure location and condition, estimation of the actual actual repair fee based on the result of the failure diagnosis, purchase of a new distributed power generation device, purchase of a new heat source machine, etc. included.
In addition, the failure includes not only the case where at least a part of the power generation device cannot generate power due to the failure, but also the case where the power generation device and its components operate but do not meet the expected operation. Is done.

The repair fee includes at least one of the repair fee and the parts cost associated with the repair. By including these in the repair fee, a generally reasonable repair fee can be obtained. In addition, the repair fee includes the cost according to the repair work content and the repair work time.

The display control unit 13 displays on the display unit 21 the first choice of stopping the distributed power generation device 20 and using the heat source unit 30 independently and the second choice of repairing the failure of the distributed power generation device 20. Control.
The first selection is a selection when the heat source machine 30 is operated independently and the heat source machine 30 is operated by receiving energy such as gas and electricity outside the distributed power generation system 1. The second option is a selection in which the distributed power generation device 20 is repaired and operated, and the heat source machine 30 uses the heat generated by the power generation operation of the distributed power generation device 20.

As shown in FIG. 5, the display unit 21 has a heat source machine independent use icon 203 (icon for first selection) in which the distributed power generation device 20 is stopped and the heat source machine 30 is used independently, and the distributed power generation device 20. A repair icon 201 (an icon for the second selection) for selecting to repair the failure of the above is displayed. The heat source machine single use icon 203 and the repair icon 201 constitute the selection reception unit 15. When the user presses either the heat source machine independent use icon 203 (the icon for the first selection) or the repair icon 201 (the icon for the second selection), the selection reception unit 15 is selected from the first selection and the second selection. The one with the pressed icon is accepted as selected.

As described above, the repair fee is displayed on the display unit 21, and the repair icon 201 and the heat source machine independent use icon 203 are displayed. Therefore, the user selects either repairing the failure of the distributed power generation device 20 or stopping the distributed power generation device 20 and using the heat source unit 30 independently, in consideration of the displayed repair fee. It is possible. That is, by presenting the repair fee, the user can use the repair fee as a criterion for selecting whether or not to perform the procedure associated with the repair, which improves the convenience of the user.
For example, if the repair fee is low, the user can choose to repair and reuse the distributed power generator 20. On the other hand, for example, when the repair fee is high, the user can choose to stop the distributed power generation device 20 without repairing it and use the heat source machine 30 independently.
If the repair fee is high but the repair is desired, the user can choose to repair and reuse the distributed power generation device 20. Further, even if the repair fee is low, the user can choose to stop the distributed power generation device 20 and use the heat source machine 30 independently.

According to the above configuration, regardless of whether the user desires or does not want to repair the failure of the distributed power generation device 20, the visit by the serviceman and the visit cost according to the diagnosis of the failure location and condition, etc. However, the cost of the visit can be reduced. Even when the repair fee is displayed, a serviceman may visit and make a diagnosis. Then, the actual repair fee may be obtained.
In addition to displaying the repair fee and the like, the display unit 21 may display various information such as the set temperature of hot water.

When the selection reception unit 15 accepts the input of the heat source machine independent use icon 203, that is, when the mode switching unit 17 receives the selection to stop the distributed power generation device 20 and use the heat source machine 30 independently, the mode switching unit 17 causes the heat source machine 30 to be used. Switch to a mode that can be used independently. The mode switching unit 17 stops the distributed power generation device 20 without repairing the mode switching unit, and makes the heat source machine 30 available independently.
The mode switching unit 17 stops the power generation in the distributed power generation device 20 and stops the supply of electric power from the power conversion device 120 to the heat source machine 30 when the heat source machine 30 is used independently. Further, the mode switching unit 17 completely stops the operation of each part of the distributed power generation device 20, such as the circulation pump 64 and the radiator 65, or controls so that the operation of each part is minimized.

Since the mode switching unit 17 stops the supply of energy from the distributed power generation device 20 to the heat source machine 30 in this way, it is possible to omit the work of the serviceman visiting the site and switching to the mode in which the heat source machine is used independently.

On the other hand, when the selection reception unit 15 accepts the input of the repair icon 201, the selection reception unit 15 transmits a repair request to the system server 5. When the system server 5 sends a repair request to the repair company control unit 70a, the repair company 7 dispatches a repair person to the facility 3 where the distributed power generation device 20 in which the failure has occurred is installed, and the repair work is performed. Will be done.

In the above, the control device 10 includes a failure detection unit 11, a display control unit 13, a selection reception unit 15, a mode switching unit 17, a display unit 21, and an operation control unit 22. However, the control device 10 may have, for example, any of these functional units. For example, the control device 10 has a failure detection unit 11 and a display control unit 13, and the display unit 21 may be provided in a device separate from the control device 10.

(1-5) Various devices The facility 3 is equipped with various devices 40 such as a television, a refrigerator, an air conditioner, a gas stove, and a gas stove. The electric power generated by the distributed power generation device 20, the system power from the outside of the distributed power generation system 1, gas, and the like are supplied to the various devices 40. The various devices 40 may be able to communicate with the control device 10, and the display control unit 13 repairs, for example, on the screen (display unit) of the television instead of or together with displaying the repair fee on the display unit 21. It may be controlled to display the charge.
Further, the various devices 40 may include a mobile device having a display unit such as a mobile phone such as a smartphone. The display control unit 13 of the control device 10 controls to display the repair charge on the screen (display unit) instead of displaying the repair charge on the display unit 21 or by communicating with the mobile device. You may.

(2) Repair fee display method in a distributed power generation system Next, a repair fee display method will be described with reference to FIG.
Step S1: The failure detection unit 11 is provided with a detector in which an abnormal value is detected when the detection results from the detectors 101, 103, 105, 107, 111, the water level detector 84, etc. indicate an abnormal value. The location is specified as a failure location of the distributed power generation device 20. Then, the failure detection unit 11 proceeds to step S2 assuming that there is a failure location (Yes in step S1). If not (No in step S1), the failure detection unit 11 continues the process of step S1.

Step S2: The failure detection unit 11 transmits the failure portion of the distributed power generation device 20 to the repair fee acquisition unit 5a. The repair fee acquisition unit 5a acquires the repair fee based on the faulty part and transmits it to the display control unit 13.
Step S3: The display control unit 13 receives the repair fee from the repair fee acquisition unit 5a, and controls the display unit 21 to display the repair fee, the repair icon 201, and the heat source machine independent use icon 203.
Step S4: The selection reception unit 15 accepts one of the selections via the repair icon 201 (the icon for the second selection) and the heat source machine independent use icon 203 (the icon for the first selection).

Steps S5 and S6: When the selection reception unit 15 receives the input of the heat source machine independent use icon 203 (Yes in step S5), the mode switching unit 17 stops the operation of the distributed power generation device 20 and makes the heat source machine 30 independent. Switch to the mode to be used (S6).

Step S7: When the selection reception unit 15 receives the input of the repair icon 201 (No in step S5), the selection reception unit 15 transmits a repair request to the system server 5. As a result, the distributed power generation device 20 in which the failure has occurred is repaired.

(3) Modification Example According to First Embodiment (3-1) In the first embodiment, the repair fee acquisition unit 5a of the system server 5 acquires a failure location from the failure detection unit 11 of the control device 10 of the facility 3. To do. Further, the repair fee acquisition unit 5a requests the repair company server 70 for the repair fee corresponding to the faulty part from the repair fee table DB 70b. The repair company control unit 70a of the repair company server 70 transmits the repair charge corresponding to the repaired portion to the repair charge acquisition unit 5a based on the repair charge table of the repair charge table DB 70b. The repair fee acquisition unit 5a acquires the repair fee corresponding to the repaired portion, and causes the display control unit 13 to control the display of the repair fee.

However, the method of obtaining the repair fee is not limited to this.
(A) For example, the repair company control unit 70a may transmit the repair charge table of FIG. 2 to the repair charge acquisition unit 5a in response to the request of the repair charge acquisition unit 5a. In this case, the repair fee acquisition unit 5a may acquire the repair fee corresponding to the repair location by referring to the failure location acquired from the failure detection unit 11 and the received repair charge table.
In addition, the system server 5 has a repair charge table DB similar to the repair charge table DB 70b, and may have the repair charge table of FIG. 2 in advance. In this case, the system server 5 acquires the failure portion acquired from the failure detection unit 11, refers to the repair fee owned by itself, and acquires the repair fee corresponding to the repair location. As a result, the acquisition of the repair fee can be completed within the system server 5. The system server 5 may access the repair company server 70 and update the repair fee list at any time.

Further, the repair fee table stored in the repair fee table DB 70b does not have to be the correspondence table between the individual failure points and the repair fee as shown in FIG. For example, one or more flat-rate repair plans may be stored.

(B) Further, as described above, the display control unit 13 of the control device 10 acquires the repair charge via the repair charge acquisition unit 5a of the system server 5. However, unlike this, the control device 10 itself may obtain the repair fee. In this case, the control device 10 shown in FIG. 7 is in addition to the failure detection unit 11, the display control unit 13, the selection reception unit 15, the mode switching unit 17, the display unit 21, and the operation control unit 22 of the control device 10 of FIG. , The repair charge acquisition unit 12 and the repair charge table DB (repair charge table storage unit of the control device) 14 are provided.

The repair charge table in the repair charge table DB 14 is the same as the repair charge table of FIG. 2 above. The repair fee acquisition unit 12 acquires a failure location from the failure detection unit 11. In addition, the repair fee acquisition unit 12 can easily acquire the repair fee corresponding to the faulty part based on the repair fee table of the repair fee table DB14. In this case, from the acquisition of the repaired portion, the acquisition of the repair fee corresponding to the repaired portion can be completed within the control device 10.
The repair charge table of the repair charge table DB 14 may be updated at any time according to the repair charge table DB 70b of the repair company server 70.

Further, although the control device 10 includes the repair fee acquisition unit 12, the control device 10 does not have to include the repair fee table DB 14. In this case, the repair fee acquisition unit 12 may request the repair company control unit 70a of the repair company server 70 to acquire the repair fee corresponding to the repaired portion in the repair fee table DB 70b.

When the control device 10 itself acquires the repair fee as described above, the system server 5 does not need to be provided with the repair fee acquisition unit 5a. Further, it is not necessary that the repair company server 70 is provided with the repair fee table DB 70b. In this case, in the distributed power generation system 1 shown in FIG. 1, at least one of the system server 5 and the repair company server 70 may be omitted.

(C) Further, in the above embodiment, the system server 5 and the repair company server 70 are connected to each other via the network 8. Then, the repair fee acquisition unit 5a of the system server 5 communicates with the repair company server 70 via the network 8 to acquire the repair fee. However, the system server 5 and the repair company server 70 may be provided in one device. In this case, the repair fee acquisition unit 5a can acquire the repair fee within one device, and communication between the system server 5 and the repair company server 70 via the network 8 is unnecessary.

(3-2) In the above embodiment, the failure detection unit 11 detects the failure location of the distributed power generation device 20. However, the failure detection unit 11 may only identify, for example, whether or not the distributed power generation device 20 has a failure. Then, when the distributed power generation device 20 has a failure, the repair fee acquisition unit 5a acquires, for example, a repair fee based on a fixed repair plan. The display control unit 13 acquires a repair fee based on a fixed repair plan from the repair fee acquisition unit 5a and displays it on the display unit 21.

(3-3)
(A) In the first embodiment, the display unit 21 displays the repair icon 201 and the heat source machine independent use icon 203 in addition to the repair fee. Then, the selection reception unit 15 accepts one of the selections. However, the display unit 21 may not display the repair icon 201 and the heat source machine single use icon 203, and may display only the repair fee.

(B) The following forms can be mentioned as the icon for selection. As shown in FIG. 17, the display unit 21 is controlled by the display control unit 13 to be a repair fee, a repair icon 201 (icon for the second selection), and a heat source machine independent use icon 203 (icon for the first selection). In addition, exchange icons (icons for third selection) 204 and 205 may be displayed. The third option is to replace the failed distributed power generation device 20 with a new distributed power generation device 20, or to replace the failed distributed power generation device 20 and the existing heat source device 30 with a new distributed power generation device. This is an option when replacing the device 20 with a new heat source machine 30. Among the replacement icons 204 and 205, the icon for replacing the failed distributed power generation device 20 with a new distributed power generation device 20 is the distributed power generation device new purchase icon 204. In addition, the icon for replacing the failed distributed power generation device 20 and the existing heat source machine 30 with the new distributed power generation device 20 and the new heat source machine 30 is the distributed power generation device & heat source machine new purchase icon 205. is there.

The repair icon 201, the heat source machine independent use icon 203, and the replacement icons 204 and 205 constitute the selection reception unit 15. The user can use the heat source unit single use icon 203 (first selection icon), repair icon 201 (second selection icon), distributed power generation device new purchase icon 204 (third selection icon), and distributed power generation. When any one of the device & heat source machine new purchase icon 205 (icon for third selection) is pressed, the selection reception unit 15 accepts selection from any of the icons. As a result, the user can select either replacement with a new distributed power generation device 20, replacement with a new distributed power generation device 20, or replacement with a new heat source device 30 in consideration of the displayed repair fee. Is. In addition, the user refers to the repair fee, whether or not to carry out the procedure associated with the repair, whether or not to replace with a new distributed power generation device 20, and replace with a new distributed power generation device 20 and a new heat source machine 30. It can also be used as a criterion for whether or not to do so. Therefore, the convenience of the user is improved.

It should be noted that the display unit 21 does not display all of the repair icon 201, the heat source machine independent use icon 203, the distributed power generation device new purchase icon 204, and the distributed power generation device & heat source machine new purchase icon 205. At least one of the icons may be displayed.

(3-4) In the first embodiment, the distributed power generation system 1 includes a system server 5 and a repair company server 70 in addition to the facility 3. However, the distributed power generation system 1 may be composed of only the control device 10, the distributed power generation device 20, and the heat source device 30 in the facility 3. That is, the distributed power generation system 1 does not include the system server 5 and the repair company server 70. Further, the distributed power generation system 1 may not include either the system server 5 or the repair company server 70.
The exchange of various data is the same as described above, except that what is included in the distributed power generation system 1 is different.

(3-5) In the first embodiment, the distributed power generation device 20 includes a hot water storage tank 130b and a heat exchanger 60 as shown in FIG. However, the distributed power generation device 20 may be configured without the hot water storage tank 130b and the heat exchanger 60.

[Second Embodiment]
The distributed power generation system according to the second embodiment of the present invention will be described below. In the distributed power generation system 1 according to the first embodiment, when a failure occurs in the distributed power generation device 20 provided in the distributed power generation system 1, the repair fee is displayed on the display unit 21. In the distributed power generation system 1 according to the second embodiment, in addition to displaying the repair fee, the display unit 21 displays, for example, the heat source machine 30 and various types when the distributed power generation device 20 is continuously used or stopped. The energy charge of the energy required by the facility 3 in which the device 40 or the like is installed is displayed. By displaying the repair fee and the energy fee, the user can obtain a criterion for selecting whether or not to perform the procedure associated with the repair, which improves the convenience of the user.
Hereinafter, the same configurations as those of the first embodiment will be assigned the same reference numerals, and the description thereof will be omitted or briefly described.

(1) Configuration of Distributed Power Generation System As shown in FIG. 8, the distributed power generation system 1 has a plurality of facilities 3 (3a, 3b ...) Each having a distributed power generation device 20 (20a, 20b ...). (), A system server 5 that manages the operating state of the distributed power generation device 20 of each facility 3, a repair company 7 that handles repairs when the distributed power generation device 20 fails, and gas and electricity in each facility 3. An energy company 9 that supplies energy such as the above is included.
The control device 10 (10a, 10b ...) Of the distributed power generation device 20 (20a, 20b ...), the system server 5, the repair company server 70 described later of the repair company 7, and the energy company of the energy company 9. The server 90 is communicably connected to the server 90 via the network 8.
The energy company 9, the control device 10, and the system server 5 will be described below.

(A) Energy company The energy company 9 is connected to each facility 3 via a supply line 92 such as a gas pipe and an electric wire, and supplies power such as grid power and energy including gas such as city gas to each facility. To do. The energy company 9 has an energy company server 90 that manages various data in the energy company 9, communication with the outside, and the like. The energy company server 90 stores the energy charge table DB90b (energy charge) in which the energy company control unit 90a and the energy charge table in which the amount of energy such as gas and electricity supplied by the energy company 9 and the energy charge are associated with each other are stored. It has a table storage unit). When the energy charge is requested from the outside, the energy company control unit 90a reads the energy charge for the request from the energy charge table DB 90b and transmits the energy charge to the outside.

The energy charge table DB 90b stores a gas charge table (energy charge table) which is a relationship between the amount of gas used and the charge shown in FIGS. 9 and 10. FIG. 9 is a first energy charge table showing the relationship between the amount of gas used and the first gas charge (first energy charge) when the heat source machine 30 is used alone. In the first energy charge table of FIG. 9, the gas usage amount is associated with the first gas charge including the basic charge and the unit charge.
On the other hand, FIG. 10 shows the relationship between the amount of gas used and the second gas charge (second energy charge) when the distributed power generation device 20 is operated and the heat source unit 30 uses the heat from the distributed power generation device 20. It is a second energy price list which shows. In the second energy charge table of FIG. 10, the gas usage amount is associated with the second gas charge including the basic charge and the unit charge.

When the amount of gas used is from 0 m ³ to 20 m ³ , the basic charge of the first gas charge is 750 yen and the unit charge is 190 yen per 1 m ³ in the first energy charge table of FIG. On the other hand, in the second energy charge table of FIG. 10, when the gas usage amount is from 0 m ³ to 20 m ³ , the basic charge of the second gas charge is 700 yen and the unit charge is 150 yen per 1 m ³ . Therefore, the first energy charge when gas is used as energy and the heat source machine 30 is used alone is higher than the second energy charge when the heat source machine 30 uses the heat from the distributed power generation device 20. ..

Further, the energy charge table DB 90b stores an electricity charge table (energy charge table) which is a relationship between the amount of electricity used and the charge shown in FIGS. 11 and 12. FIG. 11 is a first energy charge table showing the relationship between the amount of electricity used and the first electricity charge (first energy charge) when the heat source machine 30 is used alone. On the other hand, FIG. 12 shows the relationship between the amount of electricity used and the second electricity charge (second energy charge) when the distributed power generation device 20 is operated and the heat source unit 30 uses the heat from the distributed power generation device 20. It is a second energy price list which shows.

When the amount of electricity used is from 0 to 15 kWh, the first electricity charge is 280 yen in the first energy charge table of FIG. 11, while the amount of electricity used is up to 0 to 15 kWh in the second energy charge table of FIG. The second electricity charge is 250 yen. Therefore, the first energy charge when electricity is used as energy and the heat source machine 30 is used alone is higher than the second energy charge when the heat source machine 30 uses the heat from the distributed power generation device 20. ..

(B) System server The system server 5 has an energy charge acquisition unit 5b and an energy usage history DB 5c in addition to the repair charge acquisition unit 5a described in the first embodiment.
As shown in FIG. 13, the energy usage history DB 5c stores the past energy usage history in a certain facility 3, and as an example, the annual energy usage of gas and electricity is stored for each year. There is. The energy usage history DB 5c stores the same energy usage history for each of the plurality of facilities 3.

The energy charge acquisition unit 5b acquires at least one of the first energy charge and the second energy charge as the predicted energy charge according to the energy usage history and the energy charge table in the energy usage history DB 5c.
As described above, the first energy charge is an energy charge when the heat source machine 30 is used independently, and includes a first gas charge, a first electricity charge, and the like. Further, the second energy charge is generally an energy charge when the distributed power generation device 20 is operated and the heat source unit 30 uses the heat from the distributed power generation device 20, and is the second gas charge and the second energy charge. 2 Includes electricity charges, etc.

Further explaining, when the failure detection unit 11 identifies the failure location of the distributed power generation device 20, the energy charge acquisition unit 5b uses the energy usage history of the facility provided with the distributed power generation device 20 having the failure location. Read from the history DB 5c. Examples of the energy usage history DB5c to be read include the energy usage history for the previous year, the average value of the energy usage history for a plurality of years, and the like. Then, the energy charge acquisition unit 5b transmits the energy usage history to the energy company control unit 90a, and requests a predicted energy charge according to the energy usage history.

The energy company control unit 90a calculates the first and second energy charges of the prediction based on the energy usage history based on the first and second energy charge tables of the energy charge table DB 90b, respectively, and causes the energy charge acquisition unit 5b to calculate the first and second energy charges. Send. The energy charge acquisition unit 5b acquires the first and second energy charges based on the energy usage history from the energy company control unit 90a and transmits them to the display control unit 13 described later. The display control unit 13 receives the first and second energy charges from the energy charge acquisition unit 5b and displays them on the display unit 21.

Specifically, the first and second energy charges are calculated as follows.
For example, in FIG. 13, the annual gas usage in 2018 is 470 m ³ (monthly average of about 39 m ³ ), and the annual electricity usage is 4000 kWh (monthly average of about 333 kWh).
First gas rates in Figure 9, until 50 m ³ exceed 20 m ³ is the basic charge 1400 yen, since it is 95 yen fee, annual is (1400 (Yen) +95 ^{(yen) × 39 (m 3))} × 12 (Month) ≈ 61260 yen. Since the first electricity charge in FIG. 11 is 25 yen up to 350 kWh over 120 kWh, the annual amount is 25 (yen) x 333 (kWh) x 12 (months) ≈99900 yen. Therefore, for example, the first energy charge for the annual forecast for 2019 is obtained from the sum of these first gas charges and the first electricity charges.

On the other hand, the second gas rates of 10, up to 50 m ³ exceed 20 m ³ is the basic charge 1200 yen, since it is 80 yen fee, annual is (1200 (Yen) +80 (yen) × 39 ^(m 3)) × 12 (months) ≈ 51840 yen. Since the second electricity charge in FIG. 12 is 20 yen up to 350 kWh over 120 kWh, the annual amount is 20 (yen) x 333 (kWh) x 12 (months) ≈ 79920 yen. Therefore, for example, the second energy charge for the annual forecast for 2019 is obtained from the sum of these second gas charges and the second electricity charge.
As described above, each of the first and second energy charges is calculated based on the first and second energy charge tables prepared corresponding to each, and thus is calculated more accurately.

(C) Control device The display control unit 13 displays the predicted first energy charge and the second energy charge on the display unit 21 in addition to displaying the repair charge on the display unit 21 in the first embodiment. To control. As shown in FIG. 14, the display unit 21 displays, for example, about 30,000 yen as a repair fee according to the failure location detected by the failure detection unit 11, and also displays the repair icon 201 and the heat source machine independent use icon 203. Is displayed.

Further, assuming that the repair icon 201 is selected, that is, the failure of the distributed power generation device 20 is repaired and operated, and the heat generated by the power generation operation of the distributed power generation device 20 after the repair is used as the heat source machine 30 and various devices 40. Approximately 140,000 yen is displayed as the second energy charge for the prediction assuming that is used. Here, the heat source machine 30 and various devices 40 utilize energy such as heat generated by the power generation operation of the distributed power generation device 20, and the shortage is supplied with energy such as gas and electricity from the energy company 9.

Further, assuming that the heat source unit single use icon 203 is selected, that is, assuming that the distributed power generation device 20 is stopped without repair and the heat source unit 30 is used independently, as the first energy charge for prediction. About 250,000 yen is displayed. Here, since the heat source machine 30 and the various devices 40 cannot receive heat from the distributed power generation device 20, they receive energy such as gas and electricity from the energy company 9.

As described above, by displaying the first energy charge on the display unit 21, the user can grasp the first energy charge when the distributed power generation device 20 is stopped and the heat source unit 30 is used independently. it can. Therefore, the user can obtain the first energy charge as a criterion for selecting whether or not to perform the procedure associated with the repair, which improves the convenience of the user.
When the heat source unit 30 was used alone, the power generated by the distributed power generation device 20 was used in the facility 3, and the profits enjoyed by not purchasing the grid power and the generated power were obtained by reversing the tide. Profit, the price of the power purchased from the grid power of the electric power company (energy company 9) was cheaper by using the distributed power generation device 20. Profit, the gas company (energy) by using the distributed power generation device 20 It will not be possible to obtain profits, etc., where the price of gas purchased from company 9) has been reduced. In consideration of these points and the like, the user can determine whether or not to perform the repair by referring to the first energy charge. The user can also use the first energy charge as a criterion for replacing at least one of the distributed power generation device 20 and the heat source machine 30 with a new one.

Further, by displaying not only the repair fee but also the first energy fee, the user can select whether or not to perform the procedure associated with the repair by weighing the repair fee and the first energy fee.
For example, if the user does not repair, the user will be paid for the first energy fee, but by paying the repair fee and repairing the distributed power generation device 20, the above-mentioned various benefits can be obtained, and the repair fee can be paid. It is possible to judge whether or not it can be collected.

Further, when the second energy charge is displayed on the display unit 21, the user repairs and operates the distributed power generation device 20, and the heat source machine 30 uses the heat generated by the power generation operation of the repaired distributed power generation device 20. It is possible to grasp the second energy charge when the power is generated. Therefore, the user can obtain the second energy charge as a criterion for selecting whether or not to perform the procedure associated with the repair, which improves the convenience of the user. The user can also use the second energy charge as a criterion for whether or not at least one of the distributed power generation device 20 and the heat source machine 30 is replaced with a new one.
Further, by displaying not only the repair fee but also the second energy fee, the user can select whether or not to perform the procedure associated with the repair by weighing the repair fee and the second energy fee.
That is, it can be seen that the user pays the first energy charge if the distributed power generation device 20 is not repaired, and pays the repair fee and the second energy charge if the repair is performed. Since the second energy charge is generally cheaper than the first energy charge, it is possible to judge whether or not the repair charge can be recovered even if the repair is performed by paying the repair charge.

In particular, in the above embodiment, since both the first and second energy charges are displayed on the display unit 21 together with the repair charge, the user can weigh the repair charge, the first energy charge, and the second energy charge. It is possible to determine whether to repair and reuse the distributed power generation device 20 or to stop the distributed power generation device 20 and use the heat source device 30 independently, which improves user convenience.

(2) Repair Charge Display Method and Energy Charge Display Method in Distributed Power Generation System Next, the repair charge display method and energy charge display method will be described with reference to FIG. The part that overlaps with the flow of the repair fee display method of FIG. 6 of the first embodiment will be briefly described or omitted.
Step S11: When the failure detection unit 11 identifies a failure location of the distributed power generation device 20, the failure detection unit 11 considers that there is a failure location and proceeds to step S12 (Yes in step S11). If not (No in step S11), the failure detection unit 11 continues the process of step S11.

Step S12: The repair fee acquisition unit 5a acquires the repair fee based on the failure location transmitted from the failure detection unit 11 and transmits it to the display control unit 13.
Further, when the failure detection unit 11 identifies the failure location of the distributed power generation device 20, the energy charge acquisition unit 5b transmits the energy usage history in the energy usage history DB 5c to the energy company control unit 90a, and responds to the energy usage history. Demand estimated energy charges.
The energy company control unit 90a calculates the first and second energy charges of the prediction based on the energy usage history based on the first and second energy charge tables of the energy charge table DB 90b, respectively, and causes the energy charge acquisition unit 5b to calculate the first and second energy charges. Send. The energy charge acquisition unit 5b acquires the first and second energy charges and transmits them to the display control unit 13.

Step S13: The display control unit 13 receives the repair charge from the repair charge acquisition unit 5a, receives the first and second energy charges from the energy charge acquisition unit 5b, and receives the repair charge, the first, and the second energy charge from the display unit 21. The second energy charge, the repair icon 201, and the heat source unit single use icon 203 are controlled to be displayed.
Step S14: The selection reception unit 15 accepts one of the selections via the repair icon 201 and the heat source machine single use icon 203.

Steps S15, S16: When the selection reception unit 15 receives the input of the heat source machine independent use icon 203 (Yes in step S15), the mode switching unit 17 stops the operation of the distributed power generation device 20 and separates the heat source machine 30. The mode is switched to the mode (S16).

Step S17: When the selection reception unit 15 receives the input of the repair icon 201 (No in step S15), the selection reception unit 15 transmits a repair request to the system server 5. As a result, the distributed power generation device 20 in which the failure has occurred is repaired.

(3) Modified Example According to the Second Embodiment (3-1) In the second embodiment, the energy charge acquisition unit 5b requests the energy company control unit 90a for a predicted energy charge according to the energy usage history. The energy charge acquisition unit 5b causes the display control unit 13 to control the display of the energy charge acquired by the energy company control unit 90a based on the energy usage history and the energy charge table.

However, the method of obtaining the first and second energy charges is not limited to this.
(A) For example, the energy company control unit 90a may transmit the energy charge table of FIGS. 9 to 12 to the energy charge acquisition unit 5b in response to the request of the energy charge acquisition unit 5b. In this case, the energy charge acquisition unit 5b may acquire the energy charge by referring to the energy usage history in the energy usage history DB 5c and the energy charge table. Here, the energy price list includes at least one of the first energy price list and the second energy price list.

In addition, the system server 5 has an energy charge table DB similar to the energy charge table DB 90b, and may have the energy charge tables of FIGS. 9 to 12 in advance. In this case, when the selection reception unit 15 accepts the selection of either the heat source machine independent use icon 203 or the repair icon 201, the system server 5 refers to the energy usage history in the energy usage history DB 5c. Further, the system server 5 refers to the energy charge held by the system server 5 and acquires the energy charge corresponding to the energy usage history. In this case, from the acquisition of the energy usage history, the acquisition of the energy charge corresponding to the energy usage history can be completed in the system server 5. The system server 5 may access the energy company server 90 and update the energy price list at any time.

Further, the energy charge table stored in the energy charge table DB 90b does not have to be a correspondence table in which the unit price of energy changes stepwise according to the amount of energy as shown in FIGS. 9 to 12. For example, one or more flat-rate energy rate plans may be stored.

(B) Further, as described above, the display control unit 13 of the control device 10 acquires the energy charge via the energy charge acquisition unit 5b of the system server 5. However, unlike this, the control device 10 itself may acquire the energy charge. In this case, the control device 10 shown in FIG. 16 is in addition to the failure detection unit 11, the display control unit 13, the selection reception unit 15, the mode switching unit 17, the display unit 21, and the operation control unit 22 of the control device 10 of FIG. , The energy charge acquisition unit 16 and the energy charge table DB (energy charge table storage unit of the control device) 18 are provided.

The energy charge table in the energy charge table DB18 is the same as the energy charge table of FIGS. 9 to 12 described above. When the selection reception unit 15 accepts the selection of either the heat source machine independent use icon 203 or the repair icon 201, the energy charge acquisition unit 16 acquires the energy usage history from the energy usage history DB 5c of the system server 5. Further, the energy charge acquisition unit 16 refers to the energy usage history and the energy charge table in the energy charge table DB18, and acquires the energy charge corresponding to the energy usage history. In this case, from the acquisition of the energy usage history, the acquisition of the energy charge corresponding to the energy usage history can be almost completed in the control device 10.
The energy charge table of the energy charge table DB 18 may be updated at any time according to the energy charge table DB 90b of the energy company server 90.
Further, the control device 10 does not acquire the energy usage history from the energy usage history DB 5c of the system server 5, but the control device 10 itself may have the energy usage history DB 5c.

Further, although the control device 10 includes the energy charge acquisition unit 16, the control device 10 does not have to include the energy charge table DB 18. In this case, the energy charge acquisition unit 16 may request the energy charge from the energy company control unit 90a of the energy company server 90 and acquire the energy charge corresponding to the energy usage history in the energy charge table DB 90b.

When the control device 10 itself acquires the energy charge as described above, the system server 5 does not need to be provided with the energy charge acquisition unit 5b. Further, it is not necessary that the energy company server 90 is provided with the energy charge table DB 90b. In this case, in the distributed power generation system 1 shown in FIG. 8, at least one of the system server 5 and the energy company 9 may be omitted.

(C) Further, in the second embodiment, the system server 5, the repair company server 70, and the energy company server 90 are connected to each other via the network 8. Then, the repair fee acquisition unit 5a of the system server 5 communicates with the repair company server 70 via the network 8 to acquire the repair fee. Further, the energy charge acquisition unit 5b of the system server 5 communicates with the energy company server 90 via the network 8 to acquire the energy charge.
However, at least two of the system server 5, the repair company server 70, and the energy company server 90 may be provided in one device. Communication via the network 8 is not required between the servers in one device, and at least one of the repair fee and the energy fee can be obtained without going through the network 8.

(3-2) In the second embodiment, the energy charge acquisition unit 5b acquires the energy charge based on the past energy usage history. However, the energy charge acquisition unit 5b may acquire the average energy charge of a general facility and output it to the display control unit 13.

(3-3) In the second embodiment, the first energy charge (energy charge when the distributed power generation device 20 is stopped and the option to use the heat source unit 30 independently is accepted) and the second energy charge (distributed type). The display unit 21 displays both (energy charges when the heat source machine 30 accepts the option of repairing and operating the power generation device 20 and using the heat generated by the power generation operation of the repaired distributed power generation device 20). However, at least one of the first energy charge and the second energy charge may be displayed on the display unit 21.

(3-4) In the second embodiment, the acquisition of the energy charge is performed when the failure detection unit 11 identifies the failure location of the distributed power generation device 20. However, the energy charge may be acquired by the time the energy charge is displayed on the display unit 21. For example, in the energy charge acquisition by the energy charge acquisition unit 5b, after the failure detection unit 11 identifies the failure location of the distributed power generation device 20, the selection reception unit 15 uses either the heat source unit single use icon 203 or the repair icon 201. It may be started when the selection of is accepted.

(3-5) Similar to the first embodiment, the repair charge and the energy charge may be displayed not only on the display unit 21, but also on the display unit of various devices 40 and the screen of a portable device such as a smartphone. Good.

(3-6) In the second embodiment, the distributed power generation system 1 includes a system server 5, a repair company server 70, and an energy company server 90 in addition to the facility 3. However, the distributed power generation system 1 may be composed of only the control device 10, the distributed power generation device 20, and the heat source device 30 in the facility 3. That is, the distributed power generation system 1 does not include the system server 5, the repair company server 70, and the energy company server 90. Further, the distributed power generation system 1 may not include at least one of the system server 5, the repair company server 70, and the energy company server 90.
The exchange of various data is the same as described above, except that what is included in the distributed power generation system 1 is different.

(3-7)
In the second embodiment, the energy charges (first energy charge, second energy charge) are calculated based on the consumption of gas, electricity, and the like in the entire facility 3. However, the energy charge is not limited to the case where it is calculated for the entire facility 3. For example, the energy charge may be calculated based on at least one of the consumption of gas, electricity, etc. in the distributed power generation device 20 and the consumption of gas, electricity, etc. in the heat source machine 30.

(3-8)
In the above embodiment, as shown in FIG. 14, as the energy charge, the first energy charge when the heat source machine 30 is used alone and the distributed power generation device 20 which has failed are repaired and operated, and the repaired distributed type. The second energy charge when the heat source unit 30 uses the heat generated by the power generation operation of the power generation device 20 is displayed on the display unit 21. However, the energy charge displayed on the display unit 21 is not limited to the first energy charge and the second energy charge, and as shown in FIG. 18, the energy charge when the third energy charge (exchange icons 204 and 205 are selected) is selected. ) May be included. Further, as shown in FIG. 18, in addition to the repair fee and the first to third energy charges, the replacement fee when replacing with a new distributed power generation device 20, and the replacement with a new distributed power generation device 20 and heat source machine 30. The exchange fee may be displayed on the display unit 21.

In FIG. 18, for example, about 30,000 yen is displayed as the repair fee as in FIG. 14, and the repair icon 201 (icon for the second selection) and the heat source machine independent use icon 203 (for the first selection) are displayed. Icon) is displayed. The first prediction when it is assumed that the repair icon 201 is selected, that is, when the failure of the distributed power generation device 20 is repaired and operated, and the heat generated by the power generation operation is used by the heat source machine 30 and various devices 40. About 140,000 yen is displayed as the 2 energy charge. Further, assuming that the heat source unit single use icon 203 is selected, that is, assuming that the distributed power generation device 20 is stopped without repair and the heat source unit 30 is used independently, as the first energy charge for prediction. About 250,000 yen is displayed.

Further, in FIG. 18, exchange icons (icons for the third selection) 204 and 205 are displayed. Assuming that the new purchase icon 204 for the distributed power generation device is selected, that is, assuming that the distributed power generation device 20 in which the failure has occurred is replaced with a new distributed power generation device 20, the replacement fee and forecast for that purpose are the same. About 300,000 yen and about 110,000 yen are displayed as the three energy charges, respectively. Further, assuming that the distributed power generation device & heat source machine new purchase icon 205 is selected, that is, a new distributed power generation device 20 and a new heat source from the distributed power generation device 20 and the existing heat source machine 30 in which a failure has occurred. Assuming that the machine is replaced with the machine 30, about 400,000 yen and about 100,000 yen are displayed as the replacement fee and the predicted third energy fee, respectively.

The method of calculating the exchange fee and the third energy fee is, for example, as follows. First, the method of calculating the exchange fee will be described.
The repair charge table DB 70b of the repair company server 70 of FIG. 8 includes a replacement charge table in addition to the repair charge table. The exchange fee table includes FIGS. 19 to 21. In FIG. 19, prices are associated with each model of the new distributed power generation device 20. In FIG. 20, prices are associated with each model of the new heat source machine 30. In FIG. 21, the basic charge and excess of the cost of removing the failed distributed power generation device 20 or the existing heat source machine 30, the installation cost of the new distributed power generation device 20 or the new heat source machine 30, and the wages such as estimates. There is an hourly rate.

The repair fee acquisition unit 5a of the system server 5 in FIG. 8 repairs the repair company server 70 by charging the replacement fee when the distributed power generation device new purchase icon 204 or the distributed power generation device & heat source machine new purchase icon 205 is selected. Request to the company control unit 70a. The repair company control unit 70a calculates the replacement fee based on the replacement fee table of the repair fee table DB 70b and transmits it to the repair fee acquisition unit 5a. The repair fee acquisition unit 5a acquires the replacement fee from the repair company control unit 70a and transmits it to the display control unit 13. The display control unit 13 receives the replacement fee from the repair fee acquisition unit 5a and displays it on the display unit 21 of the control device 10.

For example, it is assumed that the distributed power generation device new purchase icon 204 is selected and the distributed power generation device 20 of model B in FIG. 19 is newly purchased. In addition, the removal cost of the existing distributed power generation device 20 has an excess time of 1 hour in addition to the basic charge, and the installation cost of the new distributed power generation device 20 is the basic charge, and the basic charge may be incurred as wages. Think. In this case, based on FIGS. 19 and 21, the price of the distributed power generator of model B (250,000 yen) + the basic charge for removal cost (20,000 yen) + the excess charge for 1 hour in removal (5,000 yen) + A total of 300,000 yen, which is the basic installation cost (20,000 yen) + wages (5,000 yen), is the replacement fee for replacing the failed distributed power generator 20 with a new distributed power generator 20. It is calculated.

Further, for example, it is assumed that the distributed power generation device & heat source machine new purchase icon 205 is selected. It is assumed that the replacement fee for the new distributed power generation device 20 is calculated in the same manner as described above, for example, 300,000 yen. Further, it is assumed that the heat source machine 30 of the model α shown in FIG. 20 is newly purchased. Also, in relation to the new heat source machine 30, the removal cost of the existing heat source machine 30 is the basic charge, and the installation cost of the new heat source machine 30 has an overtime of 1 hour in addition to the basic charge, which is the basic wage. Consider the case where charges are incurred. In this case, based on FIGS. 20 and 21, the price of the heat source machine of model α (50,000 yen) + the basic charge for removal cost (20,000 yen) + the basic charge for installation cost (20,000 yen) + 1h in installation A total of 100,000 yen, which is the excess charge (5,000 yen) + wages (5,000 yen), is calculated as the replacement charge for the heat source machine 30. Therefore, a total of 400,000 yen of 300,000 yen + 100,000 yen will be replaced when the distributed power generation device 20 and the existing heat source machine 30 that have failed are replaced with a new distributed power generation device 20 and a new heat source machine 30. Calculated as a charge.

According to the above configuration, the user can grasp the replacement fee when the new distributed power generation device 20 is replaced or the new distributed power generation device 20 and the new heat source device 30 are replaced.

Next, a method of calculating the third energy charge will be described.
The third energy charge is when the new purchase icon 204 of the distributed power generation device is selected, that is, the new distributed power generation device 20 is operated, and the existing heat source machine 30 uses the heat from the distributed power generation device 20. The energy charge for the case. In addition, the third energy charge is when the distributed power generation device & heat source machine new purchase icon 205 is selected, that is, the new distributed power generation device 20 is operated, and the new heat source machine 30 is the new distributed power generation device. It is an energy charge when using the heat from 20.

As described above, the energy company 9 stores the energy charge tables shown in FIGS. 10 and 12 in the energy charge table DB 90b. FIG. 10 shows the relationship between the amount of gas used and the second gas charge (second energy charge) when the distributed power generation device 20 is operated and the heat source unit 30 uses the heat from the distributed power generation device 20. This is the second energy price list. FIG. 12 shows the relationship between the amount of electricity used and the second electricity charge (second energy charge) when the distributed power generation device 20 is operated and the heat source unit 30 uses the heat from the distributed power generation device 20. This is the second energy price list.

The energy charge acquisition unit 5b uses the energy usage history in the energy usage history DB 5c and the second energy charge table of FIGS. 10 and 12 to acquire the third energy charge as the predicted energy charge. Since the calculation method of the third energy charge is the same calculation method as the second energy charge, the description thereof will be omitted. The second energy charge table is a charge table when the distributed power generation device 20 is operated and the heat source machine 30 uses the heat from the distributed power generation device 20, and can be diverted in the calculation of the third energy charge. ..

According to the above configuration, the user can grasp the third energy charge when the new distributed power generation device 20 is replaced or the new distributed power generation device 20 and the new heat source device 30 are replaced. Can be done. In general, the new distributed power generation device 20 has good power generation efficiency, and the new heat source machine 30 has good energy efficiency, so that the amount of gas and electricity used can be suppressed. Therefore, the third energy charge is lower than the energy charge when the distributed power generation device 20 and the heat source unit 30 that have deteriorated over time are used. Therefore, the user can grasp how much the energy charge will be cheaper than before by the exchange by presenting the third energy charge.

In addition, the repair fee, the first energy charge when the heat source machine 30 is used independently, and the heat generated by the power generation operation of the repaired distributed power generation device 20 by repairing and operating the failed distributed power generation device 20 are used as the heat source machine. If the user is presented with a second energy charge when the 30 is in use, a third energy charge when the new distributed power generator 20 and the heat source unit 30 are replaced, the user is charged a repair charge, the first. The 1st to 3rd energy charges can be weighed. As a result, the distributed power generation device 20 is repaired and reused, the distributed power generation device 20 is stopped and the heat source machine 30 is used alone, the distributed power generation device 20 is replaced with a new distributed power generation device 20, or a new one. It is possible to determine whether to replace the distributed power generation device 20 and the heat source machine 30, which improves user convenience.

The method of acquiring the replacement fee is not limited to this, but the repair fee acquisition unit 5a of the system server 5 may request the repair company control unit 70a of the repair company server 70, or the repair fee acquisition unit 5a repairs. The exchange charge table may be obtained from the company control unit 70a to calculate the exchange charge, or the system server 5 may have the repair charge table DB 70b in which the exchange charge table is stored in advance, as shown in FIG. The repair fee acquisition unit 12 of the configured control device 10 may calculate the replacement fee based on the replacement fee table in the repair fee table DB 14.

Further, the method of acquiring the third energy charge is not limited to this, but the energy charge acquisition unit 5b of the system server 5 may request the energy company control unit 90a of the energy company server 90, or the energy charge acquisition unit 5b. May obtain an energy charge table from the energy company control unit 90a and calculate a third energy charge, or the system server 5 may have an energy charge table DB 90b in which the energy charge table is stored in advance. The energy charge acquisition unit 5b of the control device 10 configured as shown in 16 may calculate the third energy charge based on the energy charge table in the energy charge table DB 90b.

The display unit 21 does not display all of the first to third energy charges and the exchange charge, but at least one of them may be displayed.
Further, in the above, the replacement fee is acquired by the repair fee acquisition unit 5a of the system server 5. However, the system server 5 has a separate exchange charge acquisition unit (not shown), and this exchange charge acquisition unit may acquire the exchange charge.

[Other Embodiments]
The configurations disclosed in the above-mentioned first and second embodiments (including modifications of each embodiment, the same shall apply hereinafter) shall be applied in combination with the configurations disclosed in each embodiment as long as there is no contradiction. The embodiments disclosed in the present specification are examples, and the embodiments of the present invention are not limited to these, and can be appropriately modified without departing from the object of the present invention. Is.

1: Distributed power generation system 5: System server 5a: Repair charge acquisition unit 5b: Energy charge acquisition unit 7: Repair company 9: Energy company 10: Control device 11: Failure detection unit 12: Repair charge acquisition unit 13: Display control unit 15: Selection reception unit 16: Energy charge acquisition unit 17: Mode switching unit 20: Distributed power generation device 30: Heat source machine 90: Energy company server 90a: Energy company control unit 201: Repair icon 203: Heat source machine independent use icon 14: Repair price list DB
18: Energy price list DB
5c: Energy usage history DB
70b: Repair fee list DB
90b: Energy price list DB

Claims (22)

A distributed power generation system including a distributed power generation device, a control device for controlling the operation of the distributed power generation device, and a heat source device.
The control device
A failure detection unit that detects the presence or absence of a failure in the distributed power generation device, and
A distributed power generation system having a display control unit that controls a display unit to display a repair fee required for repairing the failure when a failure occurs in the distributed power generation device. The display control unit is communicably connected to the control device, receives the repair fee from the system server that manages the operating state of the distributed power generation device, and controls to display the repair fee on the display unit. The distributed power generation system according to claim 1. The display control unit is provided in the repair company that repairs the failure, obtains the repair fee from the repair company server communicably connected to the control device, and displays the repair fee on the display unit. The distributed power generation system according to claim 1, which is controlled by the above. The control device
A repair charge table storage unit that stores a repair charge table in which repair charges are associated with each of multiple failures,
It has a repair fee acquisition unit that acquires the repair fee according to the failure based on the repair fee table.
The distributed power generation system according to claim 1, wherein the display control unit acquires the repair fee from the repair fee acquisition unit and controls the repair fee to be displayed on the display unit. The distributed power generation system according to any one of claims 1 to 4, wherein the repair fee includes at least one of a repair fee and a part cost associated with the repair. The display control unit displays on the display unit a first option of stopping the distributed power generation device and using the heat source unit independently, and a second selection of repairing the failure of the distributed power generation device. Control to
The control device
The distributed power generation system according to any one of claims 1 to 5, further comprising a selection reception unit that accepts any of the above selections. The display control unit replaces a failed distributed power generation device with a new distributed power generation device, or replaces a failed distributed power generation device with a new distributed power generation device and a new distributed power generation device from an existing heat source device. Controlled to display the third choice for replacement to the heat source unit on the display.
The control device
The distributed power generation system according to any one of claims 1 to 6, further comprising a selection reception unit that accepts any of the above selections. The control device
The distributed power generation system according to claim 6, further comprising a mode switching unit that stops the distributed power generation device and switches to a mode in which the heat source machine is used independently when the first selection is accepted. The display control unit determines a predicted first energy charge, which is a cost for energy consumption including at least one of gas and electricity when the distributed power generation device is stopped and the heat source unit is used alone. The distributed power generation system according to any one of claims 1 to 8, which is controlled so as to be displayed on a display unit. The first energy charge is based on a first energy charge table different from the second energy charge table.
The first energy price list is a price list of energy including at least one of gas and electricity when the distributed power generation device is stopped and the heat source machine is used alone.
The second energy price list is a price list of energy including at least one of gas and electricity when the distributed power generation device is operated and the heat source machine uses heat from the distributed power generation device. The distributed power generation system according to claim 9. The display control unit is communicably connected to the control device, receives the first energy charge from a system server that manages the operating state of the distributed power generation device, and displays the first energy charge on the display unit. The distributed power generation system according to claim 9 or 10, wherein the distributed power generation system is controlled so as to be used. The display control unit is provided in an energy company that supplies energy to a facility including the heat source unit, acquires the first energy charge from an energy company server communicably connected to the control device, and obtains the first energy charge. The distributed power generation system according to claim 9 or 10, wherein the charge is controlled to be displayed on the display unit. The control device
An energy charge table storage unit that stores a first energy charge table which is an energy charge table including at least one of gas and electricity when the distributed power generation device is stopped and the heat source unit is used independently.
Based on the first energy charge table, it has an energy charge acquisition unit that acquires the first energy charge according to the energy consumption.
The distributed power generation system according to claim 9 or 10, wherein the display control unit acquires the first energy charge from the energy charge acquisition unit and controls the first energy charge to be displayed on the display unit. .. When the display control unit repairs the distributed power generation device in which the failure has occurred, the repaired distributed power generation device is operated, and the heat from the distributed power generation device repaired by the heat source machine is used. The second energy charge of the prediction, which is the cost for the consumption of energy including at least one of gas and electricity, is controlled to be displayed on the display unit, according to any one of claims 1 to 13. Distributed power generation system. The display control unit is communicably connected to the control device, receives the second energy charge from the system server that manages the operating state of the distributed power generation device, and displays the second energy charge on the display unit. The distributed power generation system according to claim 14, wherein the distributed power generation system is controlled so as to perform. The display control unit is provided in an energy company that supplies energy to a facility including the heat source unit, acquires the second energy charge from an energy company server communicably connected to the control device, and obtains the second energy charge. The distributed power generation system according to claim 14, wherein the charge is controlled to be displayed on the display unit. The control device
An energy price list that stores a second energy price list, which is a price list of energy including gas and electricity when the distributed power generation device is operated and the heat source machine uses heat from the distributed power generation device. Memory and
Based on the second energy charge table, it has an energy charge acquisition unit that acquires a second energy charge according to the amount of energy consumed.
The distributed power generation system according to claim 14, wherein the display control unit acquires the second energy charge from the energy charge acquisition unit and controls the display to display the second energy charge on the display unit. The second energy charge is predicted based on the past record of energy utilization including at least one of gas and electricity in the facility where the distributed power generation system is installed, whichever of claims 14 to 17. The distributed power generation system according to item 1. When the distributed power generation device in which a failure has occurred is replaced with a new distributed power generation device, the display control unit operates the new distributed power generation device, and the existing heat source unit is released from the new distributed power generation device. Operate a new distributed power generation device when heat is used, or when a failed distributed power generation device or an existing heat source device is replaced with a new distributed power generation device or a new heat source device. The third energy charge, which is the cost for the consumption of energy including at least one of gas and electricity, when the new heat source machine uses the heat from the new distributed power generator, is displayed above. The distributed power generation system according to any one of claims 1 to 18, which is controlled so as to be displayed on the unit. The display control unit is the cost when replacing the distributed power generation device in which the failure has occurred with a new distributed power generation device, or the distributed power generation device in which the failure has occurred and the new distributed power generation device from the existing heat source device. The distributed power generation system according to any one of claims 1 to 19, wherein the replacement fee, which is the cost when the device is replaced with a new heat source device, is controlled so as to be displayed on the display unit. It is a repair charge display method in a distributed power generation system including a distributed power generation device, a control device for controlling the operation of the distributed power generation device, and a heat source device.
The control device
A step of detecting the presence or absence of a failure in the distributed power generation device, and
A repair fee display method comprising a step of controlling the display unit to display a repair fee required for repairing the failure when a failure occurs in the distributed power generation device. The control device
It has a step of displaying a first energy charge, which is a cost for energy consumption including at least one of gas and electricity, on the display unit when the distributed power generation device is stopped and the heat source machine is used alone. , The repair fee display method according to claim 21.

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