JP2023067586A - Abnormality diagnostic device - Google Patents

Abstract

To provide an abnormality diagnostic device capable of appropriately performing diagnosis of a content of an abnormality generated in a fuel cell device.SOLUTION: In an abnormality diagnostic device 4, an abnormality diagnosis process is constructed of a combination of a plurality of determination processes of determining whether or not at least one of a measurement result of a measuring device of a fuel cell device 10 and an operation environment of the fuel cell device 10 satisfies a predetermined discrimination, in which a determination result of the determination process determined in accordance with whether or not it satisfies the discrimination condition includes at least one of a case where a transmission to another determination process is instructed and a case where a diagnostic result of the abnormality diagnosis process is specified. The abnormality diagnostic device comprises a diagnosis process part 4b that, when an abnormality occurs in the measurement result received via an information communication line 2 from the fuel cell device 10, specifies the diagnosis result of an abnormality appeared in the received measurement result on the basis of a content corresponded to the appeared abnormality, of the abnormality diagnosis process that is stored in a storage part 4a and at least one of the measurement result of the measuring device of the fuel cell device 10 and the operation environment of the fuel cell device 10.SELECTED DRAWING: Figure 1

Description

The present invention relates to an abnormality diagnosis device for diagnosing the details of an abnormality occurring in a fuel cell device based on information received from a fuel cell device installed in a facility via an information communication line.

Patent Literature 1 (Japanese Patent Application Laid-Open No. 2016-184319) describes a system that can diagnose and identify a faulty part of a power generation system and suppress misdiagnosis at the time of fault.
Specifically, in the system described in Patent Literature 1, when the power generation system fails, failure data is generated that includes detection signal histories from each of a plurality of detection means provided in each part of the power generation device. Correlated failure data having a strong correlation with the current failure data is selected from the past failure data recorded in the database. Furthermore, the failure diagnosis result and the failure handling record associated with the selected correlated failure time data are output. As described above, in the system described in Patent Document 1, past failure data having a strong correlation with failure time data including detection signal history detected when the current failure occurs is specified, and the current failure is also It is assumed that the failure was caused by the same failure cause as the past failure data with a strong correlation.

JP 2016-184319 A

There is also a need for a method of diagnosing the operating state of a fuel cell device without relying on a statistical method of correlation strength.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to provide an abnormality diagnosis device capable of appropriately diagnosing the content of an abnormality that occurs in a fuel cell device.

In order to achieve the above object, the abnormality diagnosis apparatus according to the present invention is characterized in that, based on information received from a fuel cell device installed in a facility via an information communication line, details of an abnormality occurring in the fuel cell device are detected. An abnormality diagnostic device for diagnosing
Abnormalities appearing in the measurement results of at least one of the plurality of measuring instruments included in the fuel cell device, and a plurality of conceivable abnormalities including at least one of causes of the abnormalities and countermeasures against the abnormalities A storage unit that stores each of the plurality of abnormalities in association with an abnormality diagnosis process for specifying one of the diagnosis results of
The abnormality diagnosis process is a combination of a plurality of judgment processes for judging whether or not at least one of the measurement result of the measuring device of the fuel cell device and the operating environment of the fuel cell device satisfies a predetermined judgment condition. configured with
The determination result of the determination process, which is determined depending on whether the determination condition is satisfied, may be an instruction to shift to another determination process or a determination of the diagnosis result of the abnormality diagnosis process. including at least one of
When the measurement result received from the fuel cell device via the information communication line shows the abnormality, the contents of the abnormality diagnosis process corresponding to the abnormality stored in the storage unit, and the fuel cell device and a diagnostic processing unit that identifies the diagnostic result of the abnormality appearing in the received measurement result based on at least one of the measurement result of the measuring device and the operating environment of the fuel cell device. .

According to the above characteristic configuration, the abnormality diagnosis process is configured by combining a plurality of determination processes. and at least one type of case leading to the identification of the diagnostic result. In other words, the diagnostic processing unit, regarding an abnormality appearing in the measurement result of at least one of the plurality of measuring instruments of the fuel cell device, determines at least the measurement result of the measuring device of the fuel cell device and the operating environment of the fuel cell device. Based on one of them, one diagnostic result is specified through at least one determination process constituting the abnormality diagnostic process. In other words, the abnormality diagnosis device can automatically perform from the occurrence of an abnormality to the identification of the diagnosis result of the abnormality according to the procedure of the abnormality diagnosis processing created in advance.

For example, if a maintenance person is dispatched based only on the fact that at least one of the measuring instruments of the fuel cell system has an abnormality in the measurement result, the maintenance person will be able to confirm that on the spot. It is necessary to make a diagnosis of the abnormality. However, in this characteristic configuration, since the abnormality diagnosis device automatically identifies the diagnosis result of the abnormality, the person in charge of maintenance or the like can be dispatched after making preparations according to the diagnosis result in advance.
Therefore, it is possible to provide an abnormality diagnosis device capable of appropriately diagnosing the content of an abnormality that occurs in a fuel cell device.

Another characteristic configuration of the abnormality diagnosis apparatus according to the present invention is that the storage unit stores contact information of a manager of the fuel cell device, contact information of a person in charge of maintenance of the fuel cell device, and persons involved in the manufacture of the fuel cell device. remembers at least one of the contacts of
The diagnosis processing unit outputs the specified diagnosis result to at least one of the contact information of the administrator, the contact information of the person in charge of maintenance, and the contact information of the manufacturing personnel.

According to the above characteristic configuration, the manager such as the owner of the fuel cell device, the person in charge of maintenance of the fuel cell device, and the person involved in the manufacture of the fuel cell device can know the diagnosis result of the fuel cell device. As a result, before arriving at the repair site of the fuel cell device, the person in charge of maintenance of the fuel cell device can make preparations such as repairs according to the diagnosis result, and the manufacturing personnel of the fuel cell device can It is possible to prepare the necessary parts for repairs according to the situation. As a result, it is possible to avoid problems such as the lack of personnel with the skills to perform repairs and the lack of necessary parts for repairs at sites where repairs are actually performed.

Still another characteristic configuration of the abnormality diagnosis apparatus according to the present invention is that the diagnosis result includes details of a defect occurring in a specific portion of the fuel cell device as a cause of the abnormality.

According to the above characteristic configuration, if the manager, maintenance staff, manufacturing personnel, etc. of the fuel cell device know the details of the defect occurring in the specific part of the fuel cell device as the cause of the abnormality, they can Necessary work such as part repair or part replacement can be determined.

Still another characteristic configuration of the abnormality diagnosis device according to the present invention is that the diagnosis result includes an instruction to replace or repair a specific component of the fuel cell device as a countermeasure against the abnormality.

According to the above characteristic configuration, if an instruction to replace or repair a specific component of the fuel cell device is included as a countermeasure against an abnormality, preparation of the component to be replaced in advance, replacement work, or The number of personnel required for repair work can be determined in advance.

Still another characteristic configuration of the abnormality diagnosis device according to the present invention is that the storage unit stores information indicating the degree of difficulty of repair work or replacement work of the component parts of the fuel cell device for each of the plurality of component parts. and
The diagnostic result includes information indicating the degree of difficulty as a coping method for the abnormality.

According to the above characteristic configuration, if information indicating the difficulty level of repair work or replacement work of component parts is included as a method of coping with anomalies, preparations are made to dispatch personnel with skills corresponding to the difficulty level. can be done in advance.

Still another characteristic configuration of the abnormality diagnosis device according to the present invention is that the storage unit stores moving image data explaining repair work or replacement work of the component parts of the fuel cell device for each of the plurality of component parts. cage,
The diagnostic result includes the moving image data as a countermeasure for the abnormality.

According to the above characteristic configuration, if video data explaining repair work or replacement work of the component parts of the fuel cell device is included as a countermeasure against abnormality, the person in charge of the repair work or replacement work of the component parts can By checking the moving image data, the repair work or the replacement work can be performed without fail.

It is a figure which shows the structure of a diagnostic system provided with an abnormality diagnostic apparatus. 1 is a diagram showing the configuration of a fuel cell device; FIG. 6 is a flowchart for explaining an example of abnormality diagnosis processing; 6 is a flowchart for explaining an example of abnormality diagnosis processing;

An abnormality diagnosis device 4 according to an embodiment of the present invention will be described below with reference to the drawings.
FIG. 1 is a diagram showing the configuration of a diagnostic system including an abnormality diagnostic device 4. As shown in FIG. As shown in the figure, a fuel cell device 10 is installed in a facility 1 such as a dwelling unit and a business. The facility 1 is also provided with a power consumption device 5 , a gas consumption device 6 and a HEMS (Home Energy Management System) 7 . The HEMS 7 is a device that controls the operation of the controlled devices such as the power consumption device 5, the fuel cell device 10, and the gas consumption device 6, and performs information communication with the controlled devices via a communication line. It is possible to receive information from devices and transmit information to each device. The HEMS 7 can also transmit the information received from each device to the abnormality diagnosis device 4 or the like via the information communication line 2 .

The power consuming device 5 and the fuel cell device 10 are connected to a power line 8 interconnected with the power system and can receive power supply from the power system. Also, the power generated by the fuel cell device 10 can be supplied to the power system via the power line 8 . The gas consumption device 6 and the fuel cell device 10 can be supplied with gas such as city gas supplied from the gas supply pipe 9 . Although two facilities 1 are drawn in FIG. 1, the number can be changed as appropriate. In the following description, gas such as city gas supplied from the gas supply pipe 9 may be referred to as "raw fuel".

The fuel cell device 10 can access the information communication line 2 via the HEMS 7 or without the HEMS 7 . The fuel cell device 10 communicates with the abnormality diagnosis device 4, the information providing server device 3, the maintenance staff terminal device 60, the manufacturing personnel terminal device 61, the administrator terminal device 62, etc., which are connected to the information communication line 2. Information can be communicated between

FIG. 2 is a diagram showing the configuration of the fuel cell device 10. As shown in FIG. The fuel cell device 10 includes various parts inside an outer container 11 . The configuration of the fuel cell device 10 will be described below by dividing it into the hot module 13, raw fuel supply system, air supply system, reflux gas supply system, water recovery system, reforming water supply system, and exhaust heat recovery system.

[Hot module 13]
Inside the outer container 11, there is provided a hot module 13 that accommodates equipment such as a cell stack 18 that operates in a high-temperature environment. Specifically, inside the hot module 13, a vaporizer 14, a reformer 15, a manifold 16, a cell stack 18, and the like are provided. The vaporizer 14 vaporizes the reforming water and supplies it to the reformer 15 . The reformer 15 steam reforms the raw fuel to generate fuel gas. The reformer 15 is provided with a temperature measuring device T1 as a reformer temperature measuring device for measuring the temperature of, for example, a reforming catalyst (not shown) of the reformer 15 .

The cell stack 18 has a plurality of fuel cells 17 that generate power using the fuel gas produced by the reformer 15 and supplied through the fuel gas supply line L2. For example, the fuel gas generated by the reformer 15 passes through the fuel gas supply line L2 and reaches the manifold 16, where the fuel gas is distributed to each fuel cell 17. FIG.

A space above the cell stack 18 serves as a combustion section 19 that burns the off-gas discharged from the cell stack 18 . This combustion heat is transferred to the vaporizer 14 and reformer 15 above it. The temperature of the combustion section 19 is measured by a temperature measuring device T2 as a combustion section temperature measuring device. An igniter 20 ignites the off-gas.

An air supply path L10 is connected to the air supply port 21 of the hot module 13 to supply the inside of the hot module 13 with air. Gas present inside the hot module 13 is discharged to the outside of the hot module 13 through the exhaust port 22 of the hot module 13 . The exhaust port 22 is provided with a combustion catalyst section 23 that catalytically burns hydrogen, carbon monoxide, etc. contained in the exhausted gas using oxygen.

The exhaust gas that has passed through the combustion catalyst portion 23 is supplied to the heat exchanger 34 for exhaust heat recovery. In the exhaust heat recovery heat exchanger 34, heat is exchanged between the exhaust gas and hot water flowing through the hot water circulation path L7 as a heat medium for recovering exhaust heat, that is, the exhaust gas is cooled. moisture condenses.

A gas-liquid separation unit 35 for separating condensed water contained in the exhaust gas is provided downstream of the exhaust heat recovery heat exchanger 34 . Gas phase components in the exhaust gas are discharged to the outside of the outer container 11 through the exhaust gas passage L4, and liquid phase components in the exhaust gas are supplied to the water purifier 37 through the water recovery passage L5. . The outer container 11 is also provided with a ventilation port 55 . A temperature measuring device T3 is provided near the ventilation port 55 inside the outer container 11 . For example, the temperature of the outside air is measured by this temperature measuring device T3.

[Raw fuel supply system]
The raw fuel supply system is a system that supplies the raw fuel to the reformer 15 via the raw fuel supply line L1. Specifically, the raw fuel supply system includes a cutoff valve 26 , a pressure measuring device 27 , a raw fuel flow rate measuring device 28 , a zero governor 29 , a raw fuel supplier 30 and a desulfurizer 31 .

The cutoff valve 26 switches between a state of permitting or blocking of the inflow of the raw fuel into the raw fuel supply path L1. The pressure measuring device 27 measures the pressure of the raw fuel flowing into the raw fuel supply path L1. The raw fuel supplier 30 supplies raw fuel to the reformer 15 . Specifically, the raw fuel supplier 30 adjusts the flow rate of the raw fuel supplied to the reformer 15 per unit time. The raw fuel flow rate measuring device 28 measures the flow rate per unit time of the raw fuel supplied to the reformer 15 by the raw fuel supplier 30 . For example, the raw fuel supplier 30 operates so that the raw fuel flow rate measured by the raw fuel flow rate measuring device 28 becomes the target flow rate. The zero governor 29 adjusts the pressure of the raw fuel flowing through the raw fuel supply path L1 to be the same as the atmospheric pressure. The desulfurizer 31 removes sulfur compounds and the like contained in the raw fuel.

[Air supply system]
The air supply system is a system that supplies air to the hot module 13 via the air supply path L10. The air supplier 41 supplies air to the interior of the inner container 12 . Specifically, the air supplier 41 adjusts the flow rate of air supplied to the inside of the inner container 12 per unit time. The air flow rate measuring device 42 measures the flow rate per unit time of air supplied to the interior of the inner container 12 by the air supplier 41 . The foreign matter removal filter 40 traps foreign matter contained in the air supplied to the interior of the inner container 12 by the air supplier 41 .

[Reflux gas supply system]
The recirculated gas supply system is a system that supplies part of the fuel gas produced in the reformer 15 to the raw fuel supply path L1 via the recirculated gas supply path L3. The recirculated gas supply path L3 branches off from a branch portion 24 in the middle of the fuel gas supply path L2, joins a junction 25 in the middle of the raw fuel supply path L1 on the upstream side of the desulfurizer 31, and joins the fuel gas supply path. A part of the fuel gas flowing through L2 is supplied to the raw fuel supply path L1. Thereby, hydrogen can be supplied to the desulfurizer 31 . The recirculated gas supply path L3 is led out from the inside of the hot module 13 to the outside. The orifice 33 is provided in the middle of the recirculated gas supply path L3, and adjusts the flow rate per unit time of the fuel gas flowing through the recirculated gas supply path L3. The temperature control member 32 is provided around at least a portion of the recirculated gas supply path L3 to maintain the temperature of the reformed gas flowing through the recirculated gas supply path L3. The condensed water recovery device 36 recovers condensed water generated in the recirculated gas supply line L3. The temperature measuring device T4 measures the temperature of the recirculated gas supply path L3 at the site where the temperature control member 32 is provided. For example, the temperature measuring device T4 is a device that measures the temperature of the outer surface of the pipe that constitutes the recirculated gas supply path L3, a device that measures the temperature inside the pipe that constitutes the recirculated gas supply path L3, and the like.

[Water recovery system]
The water recovery system is a system for recovering water produced in the fuel cell device 10 . Condensed water recovered using the water recovery path L5 is supplied to the reforming water tank 38 . In the illustrated example, the water recovery path L5 has a first recovery path L5a for recovering water from the gas-liquid separator 35 and a second recovery path L5b for recovering water from the condensed water recovery device . The condensed water recovered by the first recovery path L5a and the second recovery path L5b is supplied to the reforming water tank 38 via the water purifier 37 . The water purifier 37 is a device for removing impurities contained in the collected condensed water. For example, the water purifier 37 is filled with an ion exchange resin or the like, and the electrolyte ions contained in the collected condensed water (eg, ionized and dissolved salts, ammonia, etc.) are converted into H ⁺ , OH ⁻ By replacing with, the function of relatively lowering the concentration of the electrolyte contained in the recovered condensed water (that is, lowering the electrical conductivity) is achieved.

[Reforming water supply system]
The reforming water supply system is a system that supplies reforming water to the reformer 15 via the reforming water supply line L6. In this embodiment, the reforming water stored in the reforming water tank 38 is supplied to the vaporizer 14 and then supplied from the vaporizer 14 to the reformer 15 . The reforming water supply system includes a reforming water supply path L6, a reforming water tank 38, a reforming water supply device 39, and the like. The reforming water tank 38 stores reforming water. The reforming water supply device 39 supplies reforming water to the reformer 15 . Specifically, the reforming water supply device 39 is provided in the middle of the reforming water supply path L6, and adjusts the flow rate per unit time of the reforming water flowing through the reforming water supply path L6.

[Exhaust heat recovery system]
The exhaust heat recovery system is a system for recovering heat generated in the fuel cell device 10 . The exhaust heat recovery system includes a hot water storage tank 45, a water supply path L8, a hot water outlet path L9, a hot water circulation path L7, a circulation pump 44, and the like. Hot water is stored in the hot water storage tank 45 . The hot water circulation path L7 circulates hot water between the hot water storage tank 45 and the heat exchanger 34 for exhaust heat recovery. Hot water is stored in the hot water storage tank 45 so that relatively low-temperature hot water is stored in the lower portion and relatively high-temperature hot water is stored in the upper portion, that is, in a state in which temperature stratification is formed. More specifically, the hot water circulation path L7 includes an outward path for transferring hot water from the hot water storage tank 45 to the heat exchanger for exhaust heat recovery 34 and a return path for transferring hot water from the heat exchanger for exhaust heat recovery 34 to the hot water storage tank 45. and a circulation pump 44 provided in the middle of the outward path.

With such a configuration, the hot water supplied from the lower part of the hot water storage tank 45 to the exhaust heat recovery heat exchanger 34 through the outward path of the hot water circulation path L7 is heated by the exhaust heat recovery heat exchanger 34, and after heating, The hot water is supplied to the upper portion of the hot water storage tank 45 via the return path of the hot water circulation path L7. A temperature measuring device T5 for measuring the temperature of the hot water transferred from the exhaust heat recovery heat exchanger 34 to the hot water storage tank 45 is provided on the way back. In this embodiment, the fuel cell control unit 49 controls the temperature of the hot water flowing in the return path and flowing into the hot water storage tank 45 (the temperature of the hot water measured by the temperature measuring device T5) to exceed a predetermined hot water storage target temperature (for example, 65° C.). The operation of the circulation pump 44 is controlled so that In this manner, hot water is stored in the hot water storage tank 45 in a state of thermal stratification, that is, heat is stored.

A water supply path L8 for supplying clean water to the hot water storage tank 45 is connected to the lower part of the hot water storage tank 45, and a hot water outlet path L9 for discharging the hot water stored in the hot water storage tank 45 is connected to the upper part of the hot water storage tank 45. is connected. The hot water stored in the hot water storage tank 45 is subjected to the water supply pressure applied inside the water supply path L8. With such a configuration, in the hot water storage tank 45, for example, when a faucet (not shown) connected to the hot water outlet L9 is opened, hot water is discharged from the hot water storage tank 45 to the hot water outlet L9. Tap water is supplied to the hot water storage tank 45 from the path L8.

The cell stack 18 of the fuel cell device 10 is connected to the power line 8 via the power conversion circuit section 46 . FIG. 2 shows an example in which the power conversion circuit unit 46 includes a booster circuit 47 and an inverter 48 .

The fuel cell device 10 includes a fuel cell control unit 49 , a storage unit 50 that stores information handled by the fuel cell device 10 , and a communication unit 51 . The measurement result of the measuring device included in the fuel cell device 10 is transmitted to the fuel cell control unit 49 , and the measurement result is stored in the storage unit 50 . For example, the fuel cell control unit 49 includes the above-described pressure measuring device 27, raw fuel flow rate measuring device 28, air flow rate measuring device 42, gas measuring device 43, temperature measuring device T1, Measurement results of T2, T3, T4 and T5 are transmitted. Then, the fuel cell control unit 49 transmits those measurement results from the communication unit 51 to the abnormality diagnosis device 4 at a predetermined timing. In addition, the fuel cell control unit 49 also transmits the abnormalities appearing in the measurement results from the communication unit 51 to the abnormality diagnosis device 4 as part of the measurement results.

The fuel cell control unit 49 operates various devices such as the igniter 20, the cutoff valve 26, the raw fuel supply device 30, the reforming water supply device 39, the air supply device 41, the circulation pump 44, the power conversion circuit unit 46, and the like. to control.

Next, a method for diagnosing the content of an abnormality occurring in the fuel cell device 10 based on the information received from the fuel cell device 10 installed in the facility 1 via the information communication line 2 by the abnormality diagnosis device 4 will be described. . The abnormality diagnosis device 4 includes a storage section 4a and a diagnosis processing section 4b.

The storage unit 4a of the abnormality diagnosis device 4 stores at least one of the abnormality that appears in the measurement result of at least one of the plurality of measuring instruments of the fuel cell device 10, the cause of the abnormality, and the method of coping with the abnormality. Each abnormality is stored in association with an abnormality diagnosis process for identifying one of a plurality of possible diagnosis results for the abnormality. Specifically, the abnormality diagnosis process includes a plurality of determination processes for determining whether or not at least one of the measurement result of the measuring device of the fuel cell device 10 and the operating environment of the fuel cell device 10 satisfies a predetermined determination condition. configured in combination. The determination result of the determination process, which is determined depending on whether the determination condition is satisfied, is at least one of a case where a transition to another determination process is instructed and a case where the diagnosis result of the abnormality diagnosis process is specified. include.

When an abnormality appears in the measurement result received from the fuel cell device 10 via the information communication line 2, the diagnosis processing unit 4b of the abnormality diagnosis device 4 detects an abnormality corresponding to the abnormality stored in the storage unit 4a. Based on the content of the diagnostic process and at least one of the measurement result of the measuring device of the fuel cell device 10 and the operating environment of the fuel cell device 10, the diagnostic result of the abnormality appearing in the received measurement result is specified.

Table 1 describes examples of combinations of abnormality types and abnormality diagnosis processing. In this example, when "ignition failure" appears in the measurement results of the plurality of measuring devices of the fuel cell device 10, the "abnormality diagnosis process 1" is performed to The diagnostic processing unit 4b performs a process for specifying one of them. Similarly, when "recirculation gas temperature abnormality" appears in the measurement results of a plurality of measuring devices of the fuel cell device 10, "abnormality diagnosis processing 2" is performed. Although illustration is omitted, abnormality diagnosis processing is set in advance for various other abnormalities and stored in the storage unit 4a.

[Abnormality Diagnosis Processing 1]
FIG. 3 is a flow chart showing the content of abnormality diagnosis processing 1 performed by the diagnosis processing unit 4b when an abnormality such as an ignition failure abnormality appears.
The fuel cell controller 49 of the fuel cell device 10 controls the raw fuel supplier 30 so that the flow rate of the raw fuel measured by the raw fuel flow rate measuring device 28 becomes the target flow rate at startup when the fuel cell device 10 is started. is operated, and an ignition command is given to the igniter 20 . Then, the fuel cell control unit 49 monitors the measurement result of the temperature measuring device (combustion part temperature measuring device) T2 after issuing the ignition command to the igniter 20 . When the temperature of the combustion section 19 measured by the temperature measuring device T2 does not reach or exceed the set temperature of the combustion section within a predetermined determination period after the start of the ignition process, the fuel cell control section 49 determines that the temperature of the combustion section 19 is normal. If it is assumed that combustion is not occurring, it is determined that an abnormality called ignition failure has occurred. Then, the fuel cell control unit 49 transmits the measurement result indicating that an abnormality such as ignition failure has occurred to the abnormality diagnosis device 4 from the communication unit 51 .

When receiving from the fuel cell device 10 a measurement result indicating that an abnormality such as an ignition failure has occurred, the abnormality diagnosis device 4 refers to the information stored in the storage unit 4a and executes the corresponding abnormality diagnosis process 1. read out. Then, the diagnosis processing unit 4b executes the abnormality diagnosis processing 1. FIG.

As shown in FIG. 3, the abnormality diagnosis process 1 is configured by combining three determination processes, that is, a process #10 determination process, a process #11 determination process, and a process #12 determination process.

The determination process of step #10 determines whether or not the first determination condition that the temperature of the combustion section 19 tends to rise during a predetermined determination period after the ignition process is started is satisfied. . That is, in step #10, it is determined whether or not the measurement result of the temperature measuring device T2 for measuring the temperature of the combustion section 19 satisfies a predetermined determination condition.

In the determination process of step #10, when the diagnosis processing unit 4b determines that the first determination condition that the temperature of the combustion unit 19 tends to rise during a predetermined determination period after the ignition process is started is satisfied. , the process proceeds to the determination process of step #12. In other words, if the temperature of the combustion section 19 tends to rise during the predetermined determination period after the ignition process is started, it is assumed that the off-gas is being burned although the expected combustion heat is not generated. guessed. For example, when the moving average of the temperature of the combustion section 19 measured by the temperature measuring device T2 increases within the determination period, the diagnosis processing section 4b determines that the temperature of the combustion section 19 tends to rise. .

On the other hand, when the diagnostic processing unit 4b determines that the first determination condition is not satisfied, the diagnostic processing unit 4b proceeds to the determination processing of step #11. In other words, if the temperature of the combustion section 19 does not tend to rise during the predetermined determination period after the ignition processing is started, it is estimated that the off-gas is almost not combusted or is not combusted at all. In this way, the determination result of the determination process of step #10 includes a case where a transition to another determination process is instructed.

The determination process of step #11 is to determine whether or not the second determination condition that the raw fuel supply to the fuel cell device 10 is inadequate is satisfied. For example, the abnormality diagnosis device 4 communicates information with each device of the plurality of facilities 1 and the HEMS 7 . Therefore, when an abnormality occurs in the power consuming device 5, the fuel cell device 10, or the gas consuming device 6 provided in the facility 1, the abnormality diagnosis device 4 can determine what type of abnormality has occurred in which facility 1 device. information can be received. The storage unit 4a of the abnormality diagnosis device 4 also stores location information such as addresses, latitudes, and longitudes of each facility 1. FIG. Therefore, the abnormality diagnosis device 4 detects that the combustion failure of the raw fuel has occurred even in the raw fuel combustion device that uses (that is, burns) the raw fuel and is installed in a place geographically close to the specific fuel cell device 10. In this case, for example, when the same ignition failure abnormality as in this example occurs, it can be determined that the raw fuel supply failure has occurred in that specific fuel cell device 10 as well. For example, if the gas supplied through the gas supply pipe 9 contains a large amount of water in a specific region, the gas consuming devices 6 in that region are more likely to experience poor combustion of the gas. Further, when the supply of gas via the gas supply pipe 9 is stopped in a specific area, the gas consuming device 6 in that area fails to burn the gas (that is, cannot burn). That is, in step #11, it is determined whether or not the operating environment of the fuel cell device 10 satisfies a predetermined determination condition.

In the determination process of step #11, when the diagnosis processing unit 4b determines that the raw fuel is not properly supplied to the fuel cell device 10, the diagnosis result A2 indicates that there is no failure in the fuel cell device 10. When it is determined that the raw fuel supply to the fuel cell device 10 is not defective, the diagnostic result A1 is that the igniter 20 is abnormal. In other words, the judgment result of the judgment process of step #11 includes the case where the diagnosis result of the abnormality diagnosis process 1 is specified.

The determination process of step #12 determines whether or not the raw fuel supplier 30 is operating as set. For example, the determination process of step #12 determines whether or not the rotation speed of the blower as the raw fuel supplier 30 has reached the set rotation speed for start-up. As described above, the fuel cell control unit 49 controls the raw fuel supplier 30 so that the flow rate of the raw fuel measured by the raw fuel flow rate measuring device 28 becomes the target flow rate at startup when the fuel cell device 10 is started. to operate. When the raw fuel flow rate measuring device 28 is a thermal flow meter, the flow rate of the raw fuel to be measured per unit time is determined using a conversion factor determined according to the specific heat of the raw fuel assumed to be used in the fuel cell device 10. It is determined. Therefore, when the heat quantity of the raw fuel actually supplied to the fuel cell device 10 and the heat quantity of the raw fuel assumed to be used in the fuel cell device 10 are significantly different, the raw fuel flow rate measuring device 28 measures Even if the flow rate of the raw fuel matches the target flow rate at startup, the rotational speed of the blower as the raw fuel supplier 30 does not reach the set rotational speed for startup.

In addition, the amounts of carbon and hydrogen of hydrocarbons, for example, supplied to the reformer 15 per unit time are significantly different from the target amounts at startup. Then, the amount of hydrogen generated per unit time in the reformer 15 is different. Therefore, the amount of combustible components contained in the off-gas varies per unit time, and as a result, there is a possibility that the temperature of the combustor 19 does not rise above the set temperature, leading to an ignition failure abnormality. In other words, it can be said that there is a problem that the conversion factor of the raw fuel flow rate measuring device 28 is an inappropriate value. Moreover, the fact that the amounts of combustible components contained in the off-gas are different per unit time means that the flow rate of the air supplied by the air supplier 41 per unit time is also an inappropriate value.

When the diagnostic processing unit 4b determines that the raw fuel supply device 30 is not operating as set in the determination processing of step #12, the heat amount of the raw fuel being supplied and the raw material expected to be used are determined. The diagnosis result A4 is reached that the calorific value of the fuel does not match. Further, when the diagnostic processing unit 4b determines that the raw fuel supply device 30 operates as set in the determination process of step #12, the diagnostic result A3 is that the hot module 13 is abnormal. For example, if a gas leak occurs between the raw fuel flow rate measuring device 28 and the combustion section 19, that is, an abnormality of the hot module 13 occurs such that the combustible components do not sufficiently reach the combustion section 19. If it is, it is considered that an abnormality called an ignition failure abnormality will occur. That is, the judgment result of the judgment process of step #12 includes the case where the diagnosis result of the abnormality diagnosis process 1 is specified.

[Abnormality Diagnosis Processing 2]
FIG. 4 is a flow chart showing the details of the abnormality diagnosis process 2 performed by the diagnosis processing unit 4b when an abnormality such as an abnormal recirculated gas temperature appears.
The fuel cell control unit 49 of the fuel cell device 10 measures the temperature of the recirculated gas supply line L3 at the location where the temperature control member 32 is provided, which is the measurement result of the temperature measuring device T4 as a recirculated gas temperature measuring device, that is, , the recirculated gas temperature, which is the temperature of the fuel gas flowing through the recirculated gas supply line L3, is monitored. Then, when the recirculated gas temperature is equal to or lower than the set temperature, the fuel cell control unit 49 determines that an abnormality called recirculated gas temperature abnormality has occurred. Then, the fuel cell control unit 49 transmits the measurement result indicating that an abnormality of recirculated gas temperature abnormality has occurred from the communication unit 51 to the abnormality diagnosis device 4 .

When the abnormality diagnosis device 4 receives from the fuel cell device 10 a measurement result indicating that an abnormality such as a recirculated gas temperature abnormality has occurred, the abnormality diagnosis device 4 refers to the information stored in the storage unit 4a and performs the corresponding abnormality diagnosis process 2. read out. Then, the diagnosis processing unit 4b executes the abnormality diagnosis processing 2. FIG.

As shown in FIG. 4, the abnormality diagnosis process 2 that is executed when an abnormality such as an abnormality of recirculated gas temperature appears includes three determination processes, that is, process #20 determination process, process #21 determination process, and process #22 determination process. It is configured by combining the determination processing of

In the determination process of step #20, the measured value of the temperature of the reformer 15 measured by the temperature measuring device T1 as a reformer temperature measuring device, which is received from the fuel cell device 10 via the information communication line 2, is determined. Referring to the first determination condition, the measured temperature value is higher than the target temperature value stored in the storage unit 4a and the amount of deviation of the measured temperature value from the predetermined target temperature value is equal to or greater than the first set deviation value. It is determined whether or not the That is, in step #20, it is determined whether or not the measurement result of the temperature measuring device T1 for measuring the temperature of the reformer 15 satisfies a predetermined determination condition. The abnormality diagnosis device 4 may receive the temperature target value from the fuel cell device 10 via the information communication line 2 .

In the determination process of step #20, the diagnosis processing unit 4b determines that the measured temperature value measured by the temperature measuring device T1 is higher than the target temperature value and the amount of deviation of the measured temperature value from the target temperature value is equal to or greater than the first set deviation value. If it is determined that the condition is met, the diagnosis result B1 indicates that a reforming water supply failure to the reformer 15 has occurred, for example, an operation abnormality of the reforming water supply device 39 has occurred. come to a specific. On the other hand, in the determination process of step #20, the diagnosis processing unit 4b determines that the measured temperature value measured by the reformer temperature measuring device is higher than the target temperature value and the amount of deviation of the measured temperature value from the target temperature value is the If it is determined that the condition of being equal to or greater than one set deviation value is not satisfied, the process proceeds to the determination process of step #21. In other words, the determination result of the determination process of step #20 includes both the case where the transition to another determination process is instructed and the case where the diagnosis result of the abnormality diagnosis process 2 is specified.

Specifically, when a reforming water supply failure to the reformer 15 occurs, the amount of reforming water supplied to the reformer 15 per unit time decreases. The amount of fuel gas produced per unit time in vessel 15 is reduced. Further, the flow rate per unit time of the fuel gas flowing from the fuel gas supply path L2 to the recirculated gas supply path L3 also decreases. That is, since the flow rate of the high-temperature fuel gas flowing through the recirculated gas supply path L3 is reduced, it is presumed that the recirculated gas temperature will fall below the set temperature, leading to an abnormal recirculated gas temperature state. In addition, when the reforming water supply to the reformer 15 is inadequate, the amount of reforming water supplied to the reformer 15 per unit time decreases. It is presumed that the amount of heat utilized is reduced and the temperature of the reformer 15 is increased. Therefore, the diagnosis processing unit 4b determines that the measured temperature value measured by the reformer temperature measuring device is higher than the target temperature value and the deviation amount of the measured temperature value from the target temperature value is equal to or greater than the first set deviation value. 1 determination condition is satisfied and the recirculated gas temperature is equal to or lower than the set temperature, the diagnostic result B1 is identified.

Thus, as an example of the diagnosis result B1, a diagnosis result that a reforming water supply failure to the reformer 15 has occurred, and a diagnosis result that an operation abnormality of the reforming water supply device 39 has occurred. are described, they may be used alone or in combination.

In the determination process of step #21, the actual flow rate value of the raw fuel measured by the raw fuel flow rate measuring device 28 is referred to, and the amount of deviation of the measured flow rate value from the target flow rate value stored in the storage unit 4a is the second value. It is determined whether or not the second determination condition of being equal to or greater than the set divergence value is satisfied. That is, in step #21, it is determined whether or not the measurement result measured by the raw fuel flow rate measuring device 28 satisfies a predetermined determination condition. The abnormality diagnosis device 4 may receive the flow rate target value from the fuel cell device 10 via the information communication line 2 .

In the determination process of step #21, the diagnosis processing unit 4b refers to the actual flow rate value of the raw fuel measured by the raw fuel flow rate measuring device 28 and the target flow rate value, and determines the amount of deviation of the actual flow rate value from the target flow rate value. is equal to or greater than the second set deviation value, the diagnosis result B2 indicates that there is an abnormality in the collection of condensed water by the condensed water collector 36, that is, the drain is defective. , and if the second determination condition is not satisfied, the process proceeds to the determination process of step #22. In other words, the determination result of the determination process of step #21 includes both the case where the transition to another determination process is instructed and the case where the diagnosis result of the abnormality diagnosis process 2 is specified.

Specifically, the recirculated gas supply path L3 is a path from the branch portion 24 of the fuel gas supply path L2 to the confluence portion 25 of the raw fuel supply path L1. The fuel gas flowing through the recirculated gas supply path L3 contains not only hydrogen but also water vapor. Therefore, as described above, condensed water is generated in the recirculated gas supply line L3, and the condensed water collector 36 is also provided for collecting the condensed water. However, if the flow of condensed water from the condensed water recovery device 36 to the second recovery path L5b is not performed normally, overflowing condensed water flows into the confluence portion 25 of the raw fuel supply path L1, and depending on the case, the zero governor 29 and raw fuel flow meter 28 may also be reached.

When part of the raw fuel supply path L1 is blocked by condensed water due to overflowing condensed water flowing into the confluence portion 25 of the raw fuel supply path L1, even if the raw fuel supply device 30 is operating, Since it becomes difficult for the raw fuel to flow through the fuel supply path L1, the actual flow rate value of the raw fuel measured by the raw fuel flow rate measuring device 28 becomes much smaller than the flow rate target value. However, since the raw fuel supply device 30 is in operation, when the pressure of the raw fuel in the raw fuel supply path L1 increases, the raw fuel together with the condensed water blocking the raw fuel supply path L1 at a certain point in time will flow into the vaporizer. It flows out at once in the direction of 14. In this way, when an abnormality occurs in the collection of condensed water by the condensed water collector 36, that is, when an abnormality such as poor drainage occurs, the deviation of the flow rate actual value from the flow rate target value of the raw fuel It is considered that a phenomenon occurs in which the amount becomes equal to or greater than the second set deviation value.

In addition, FIG. 4 shows the diagnosis result B2 that an abnormality has occurred in the collection of condensed water by the condensed water collector 36. It may be necessary to replace at least one of them.
Thus, although some examples of diagnostic results B2 have been described, they may be used alone or in combination with any others.

The determination process of step #22 determines whether or not the third determination condition that the outside air temperature measured by the temperature measuring device T3 as the outside air temperature measuring device is equal to or lower than the set outside air temperature is satisfied.
As described above, the temperature control member 32 for maintaining the temperature of the reformed gas flowing through the recirculated gas supply line L3 is provided around at least a portion of the recirculated gas supply line L3. For example, a temperature control member 32 is provided at a portion where the temperature of the recirculated gas is measured by a temperature measuring device T3 as an outside air temperature measuring device. Therefore, the temperature of the recirculated gas measured by the temperature measuring device T3 is higher than the set temperature. However, if the attachment of the temperature control member 32 to the recirculated gas supply path L3 is insufficient, the recirculated gas temperature becomes equal to or less than the set temperature even if the outside air temperature measured by the temperature measuring device T3 is not equal to or less than the set outside air temperature. An anomaly called recirculated gas temperature anomaly occurs. That is, in the determination process of step #22, if the third determination condition that the outside air temperature measured by the temperature measuring device T3 is equal to or lower than the set outside air temperature is not satisfied, the diagnosis processing unit 4b sets the temperature of the recirculated gas supply path L3 to This leads to identification of the diagnostic result B4 that the mounting of the adjustment member 32 is insufficient.

On the other hand, if the third judgment condition that the outside air temperature measured by the temperature measuring device T3 is equal to or lower than the set outside air temperature is not satisfied in the judgment processing of step #22, the diagnosis processing unit 4b determines that the orifice 33 is abnormal. This leads to identification of the diagnosis result B3 that there is. In other words, the determination result of the determination process of step #22 includes the case where the diagnosis result of the abnormality diagnosis process 2 is specified.

As described above, the abnormality diagnosis device 4 can automatically perform from the occurrence of an abnormality to the specification of the diagnosis result of the abnormality according to the procedure of the abnormality diagnosis processing created in advance. Then, the specified diagnostic result is stored in the storage unit 4 a of the abnormality diagnostic device 4 . Further, the storage unit 4a of the abnormality diagnosis device 4 stores the contact information of the manager such as the owner who manages the fuel cell device 10, the contact information of the person in charge of maintenance of the fuel cell device 10, and the assembly information of the fuel cell device 10. The diagnostic processing unit 4b stores at least one of the contact information of the person involved in the manufacturing such as the manufacturer and the parts manufacturer, and the diagnosis processing unit 4b stores the specified diagnosis result in the contact information of the administrator, the contact information of the person in charge of maintenance, and the manufacturing relationship. output to at least one of the person's contacts. For example, the diagnosis processing unit 4b sends the diagnosis result to the e-mail address of the administrator of the fuel cell device 10, the e-mail address of the person in charge of maintenance of the fuel cell device 10, the e-mail address of the person involved in the manufacture of the fuel cell device 10, and the like. to send. As a result, the manager of the fuel cell device 10 can confirm the diagnosis result on the manager terminal device 62, and the maintenance person of the fuel cell device 10 can confirm the diagnosis result on the maintenance person terminal device 60. 10 manufacturing personnel can confirm the diagnosis result on the manufacturing personnel terminal device 61 . In this manner, since the abnormality diagnosis device 4 automatically identifies the diagnosis result of the abnormality, the person in charge of maintenance or the like can be dispatched after making preparations according to the diagnosis result in advance.

For example, before arriving at the site for repair of the fuel cell device 10, the person in charge of maintenance of the fuel cell device 10 can make preparations such as repairs according to the diagnosis result. It is possible to prepare the necessary parts for repair according to the diagnosis result. As a result, it is possible to avoid problems such as the lack of personnel with the skills to perform repairs and the lack of necessary parts for repairs at sites where repairs are actually performed.

In the example described above, the diagnosis results of the abnormality diagnosis process 1 include "abnormality in the igniter 20 (diagnosis result A1)", "abnormality in the hot module 13 (diagnosis result A3)", and "not supplied" as the cause of the abnormality. The heat quantity of the raw fuel used does not match the heat quantity of the raw fuel that is assumed to be used (diagnosis result A4).” . Further, the diagnosis result of the abnormality diagnosis process 2 includes "operation abnormality of the reforming water supply device 39 (diagnosis result B1)", "abnormality of the orifice 33 (diagnosis result B3)", "reflux gas supply Insufficient attachment of the temperature control member 32 to the path L3 (diagnostic result B4)”, etc. If the manager, maintenance staff, manufacturing personnel, etc. of the fuel cell device 10 know the content of the defect occurring in a specific part of the fuel cell device 10 as the cause of the abnormality, they can repair the part or repair the part. Necessary work such as parts replacement can be determined.

It should be noted that the diagnosis result is not limited to the example described above, and can be changed as appropriate.
To give a specific example, the diagnosis result may include an instruction to replace or repair a specific component of the fuel cell device 10 as a remedy for the abnormality. For example, the diagnosis result A1 of the abnormality diagnosis process 1 may be "replacement or repair of the igniter 20". The diagnosis result A3 of the abnormality diagnosis process 1 may be "replacement or repair of hot module 13" or the like. The diagnosis result A4 of the abnormality diagnosis process 1 is "change the conversion factor of the raw fuel flow rate measuring device 28 to an appropriate value", "change the air flow rate per unit time supplied by the air supply device 41 to an appropriate value", and the like. There may be. Further, the diagnosis result B1 of the abnormality diagnosis process 2 may be "replacement of the reforming water supply device 39" or the like. If an instruction to replace or repair a specific component of the fuel cell device 10 is included as a countermeasure against the abnormality, preparation of the component to be replaced in advance and personnel required for the replacement or repair work are included. can be determined in advance.

In addition, when instructing replacement or repair of specific components of the fuel cell device 10, it is preferable to know the degree of difficulty. Therefore, the storage unit 4a stores information indicating the degree of difficulty of repair work or replacement work of the components of the fuel cell device 10 for each of a plurality of components, and the diagnosis result is used as a countermeasure against the abnormality. Information indicating the degree of difficulty may also be included. As a countermeasure against anomalies, if information indicating the degree of difficulty of repair work or replacement work of component parts is included, preparations can be made in advance to dispatch personnel with skills corresponding to the degree of difficulty.

In addition, when instructing the replacement or repair of a specific component part of the fuel cell device 10, the maintenance person who actually performs the replacement or repair needs to prepare video data explaining the repair work or replacement work in advance. It is preferable to be able to see it on site. Therefore, the storage unit 4a stores, for each of a plurality of component parts, video data explaining repair work or replacement work of the component parts of the fuel cell device 10, and the diagnostic result is used as the video data as a countermeasure for the abnormality. may include If video data explaining repair work or replacement work of the component parts of the fuel cell device 10 is included as a method of coping with the abnormality, the person in charge of repair work or replacement work of the component parts checks the video data. Therefore, repair work or replacement work can be carried out reliably.

<Another embodiment>
<1>
Although the configuration of the fuel cell device 10 has been specifically described in the above embodiment, the configuration can be changed as appropriate.
Also, the content of the diagnosis result can be changed as appropriate.

<2>
In the above-described embodiment, the fuel cell control unit 49 determines that an abnormality such as an ignition failure abnormality has occurred, and the fuel cell control unit 49 receives the measurement result indicating that an abnormality such as an ignition failure abnormality has occurred from the communication unit 51 for abnormality diagnosis. Although an example of transmitting to the device 4 has been described, other forms may be used. For example, even if the diagnosis processing unit 4b of the abnormality diagnosis device 4 refers to the temperature of the combustion unit 19 received from the fuel cell device 10 via the information communication line 2 and determines that an abnormality such as an ignition failure abnormality has occurred, good.

Similarly, in the above embodiment, the fuel cell control unit 49 determines that an abnormality called recirculated gas temperature abnormality has occurred, and the fuel cell control unit 49 communicates the measurement result indicating that an abnormality called recirculated gas temperature abnormality has occurred. Although an example of transmission from the unit 51 to the abnormality diagnosis device 4 has been described, other forms may be used. For example, the diagnosis processing unit 4b of the abnormality diagnosis device 4 may refer to the recirculated gas temperature received from the fuel cell device 10 via the information communication line 2 and determine that an abnormality called recirculated gas temperature abnormality has occurred. .

<3>
It should be noted that the configurations disclosed in the above embodiments (including other embodiments, the same shall apply hereinafter) can be applied in combination with configurations disclosed in other embodiments as long as there is no contradiction. The embodiments disclosed in this specification are exemplifications, and the embodiments of the present invention are not limited thereto, and can be modified as appropriate without departing from the object of the present invention.

INDUSTRIAL APPLICABILITY The present invention can be used for an abnormality diagnosis device capable of appropriately diagnosing the content of an abnormality that occurs in a fuel cell device.

1: facility 2: information communication line 4: abnormality diagnosis device 4a: storage unit 4b: diagnosis processing unit 10: fuel cell device 27: pressure measuring device (measuring device)
28: Raw fuel flow rate measuring instrument (measuring instrument)
42: Air flow measuring device (measuring device)
43: Gas measuring instrument (measuring instrument)
T1: temperature measuring instrument (measuring instrument, reformer temperature measuring instrument)
T2: Temperature measuring instrument (measuring instrument, combustion part temperature measuring instrument)
T3: Temperature measuring instrument (measuring instrument, outside air temperature measuring instrument)
T4: temperature measuring instrument (measuring instrument, reflux gas temperature measuring instrument)
T5: temperature measuring instrument (measuring instrument)

Claims (6)

An abnormality diagnosis device for diagnosing details of an abnormality occurring in a fuel cell device installed in a facility based on information received via an information communication line from the fuel cell device,
Abnormalities appearing in the measurement results of at least one of the plurality of measuring instruments included in the fuel cell device, and a plurality of conceivable abnormalities including at least one of causes of the abnormalities and countermeasures against the abnormalities A storage unit that stores each of the plurality of abnormalities in association with an abnormality diagnosis process for specifying one of the diagnosis results of
The abnormality diagnosis process is a combination of a plurality of judgment processes for judging whether or not at least one of the measurement result of the measuring device of the fuel cell device and the operating environment of the fuel cell device satisfies a predetermined judgment condition. configured with
The determination result of the determination process, which is determined depending on whether the determination condition is satisfied, may be an instruction to shift to another determination process or a determination of the diagnosis result of the abnormality diagnosis process. including at least one of
When the measurement result received from the fuel cell device via the information communication line shows the abnormality, the contents of the abnormality diagnosis process corresponding to the abnormality stored in the storage unit, and the fuel cell device an abnormality diagnosis apparatus comprising a diagnosis processing unit that identifies the diagnosis result of the abnormality appearing in the received measurement result based on at least one of the measurement result of the measuring device and the operating environment of the fuel cell device . The storage unit stores at least one of contact information of a manager of the fuel cell device, contact information of a person in charge of maintenance of the fuel cell device, and contact information of a person involved in manufacturing the fuel cell device,
2. The abnormality diagnosis according to claim 1, wherein the diagnosis processing unit outputs the specified diagnosis result to at least one of the contact information of the administrator, the contact information of the person in charge of maintenance, and the contact information of the manufacturing personnel. Device. 3. The abnormality diagnosis apparatus according to claim 1, wherein the diagnosis result includes, as the cause of the abnormality, details of a defect occurring in a specific portion of the fuel cell device. 4. The abnormality diagnosis apparatus according to claim 1, wherein said diagnosis result includes an instruction to replace or repair a specific component of said fuel cell device as a countermeasure against said abnormality. The storage unit stores information indicating a degree of difficulty of repair work or replacement work of the component parts of the fuel cell device for each of the plurality of component parts,
5. The abnormality diagnosis apparatus according to claim 4, wherein the diagnosis result includes information indicating the degree of difficulty as a coping method for the abnormality. wherein the storage unit stores video data describing repair work or replacement work of the component parts of the fuel cell device for each of the plurality of component parts,
6. The abnormality diagnosis device according to claim 4, wherein said diagnosis result includes said moving image data as a countermeasure for said abnormality.

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