Remote monitoring diagnostic system and method

[0001] The present invention relates to a remote monitoring and diagnostic system for remotely and collectively monitoring a plurality of plants such as thermal power and hydroelectric power generation facilities to diagnose an abnormality, and a remote monitoring and diagnostic method. ..

[0002] [Conventional Technology] In response to a user when an abnormality occurs in a plant in a conventional power generation facility or the like, a technician is dispatched from the manufacturer to the site to directly instruct, inspect and evaluate, and take measures thereof. Therefore, when there were multiple equipments at the same site, instructors were dispatched according to the number of equipments. In addition, if it is not abnormal during normal operation, but it is not possible to examine the necessity of the sign that an abnormality is likely to occur at the site, the manufacturer instructor will record the data related to the situation in the past and the inspection result. It is sent to the head office by fax or e-mail, and the judgment result is also obtained by telephone, fax, e-mail, etc., and repairs and replacement parts are purchased to deal with abnormalities.

[0003] [Problems to be Solved by the Invention] As described above, the conventional early treatment of abnormalities by equipment abnormality monitoring and symptom diagnosis by users and manufacturers is based on oral and fax from user operation and maintenance personnel. Therefore, it took time to extract the potential when detailed analysis results and points to be noted in the work occur, and it took time to prepare (list up) the parts and moving tools necessary for the work of the cause treatment. .. For this reason, conventionally, it has been desired to improve the equipment utilization rate by reducing the time required for countermeasures against abnormalities.

[0004] An object of the present invention is<u style="single">Gas turbine by identifying which of the multiple combustors the abnormality occurred</u>It is an object of the present invention to provide a remote monitoring and diagnosis system and a remote monitoring and diagnosis method that can improve the operating rate of a plant.

[Means for Solving the Problems] In order to achieve the above object, the remote monitoring and diagnostic system of the present invention is used.<u style="single">A monitoring device that collects exhaust temperature data of each combustor of a plurality of cans installed in a gas turbine of a local power plant and monitors the combustion state of the combustor, and a monitoring device for each combustor collected by the monitoring device. It was detected from a data storage file that stores exhaust temperature data, a database that stores data related to similar events of past gas turbine combustor abnormalities, and operations related to response operations to the abnormal occurrences, and adjacent combustors. If the temperature difference between the two combustion temperature data is larger than the specified value, it is determined that an abnormality has occurred in the combustor, and if an abnormality occurs in one combustion temperature data, it is determined that the temperature detector is abnormal. And a communication device that transmits to the user of the power plant the cause of the combustor abnormality searched from the database based on the diagnosis result of the diagnostic device and / or the response operation information for the abnormality occurrence.</u>It is equipped with.

[0006] Further, the remote monitoring and diagnosis method of the present invention is:<u style="single">The monitoring device installed in the local power plant collects the exhaust temperature data of each combustor of a plurality of cans installed in the gas turbine, and stores the exhaust temperature data for each combustor collected by the monitoring device. When the temperature difference between two combustion temperature data detected from adjacent combustors is larger than the specified value, an abnormality occurs in that combustor, and an abnormality occurs in one combustion temperature data. Is determined by a diagnostic device as an abnormality of the temperature detector, and based on the diagnosis result of the diagnostic device, data related to similar events of past gas turbine combustor abnormalities and response operations to the abnormal occurrences are obtained. The cause of the combustor abnormality and the operation information for the response to the abnormality, which are searched from the accumulated databases, are transmitted to the user of the power plant by the communication device.</u>It is a thing.

[Embodiments of the Invention] Hereinafter, examples of the present invention will be described with reference to the drawings. In the examples described below, a power plant will be used as an example of application of the remote monitoring and diagnosis system of the present invention.

[0008] FIGS. 1 to 4 show an outline of the configuration of a remote monitoring and diagnostic system according to an embodiment of the present invention. FIGS. 1 and 2 show a case where a remote monitoring and diagnosis center using a general public line or the Internet is installed as a communication line means for connecting a user and a manufacturer. In addition, FIGS. 3 and 4 show an example in the case where the remote monitoring and diagnosis center is not installed.

[0009] As a typical system configuration, the configuration shown in FIG. 1 will be described below.

[0010] A personal computer 3 is installed as a terminal that can connect to the Internet in the maintenance office 2 where the plant operation / maintenance personnel on the user 1 side are stationed. In addition, a site monitoring system 6 that collects plant data from the control device 5 of the power plant and monitors the power plant is installed at the power plant 4 of the local equipment to be monitored.

[0011] This on-site monitoring system 6 is a converter 7 that converts plant data into electronic data from a control device of a power plant, a monitoring device that collects electronic data that has passed through the converter 7 and monitors the plant status 8, and is collected. It is equipped with data storage files 9 and 10 for storing the plant data, a personal computer 11 for transmitting the plant data collected in the data storage file 10 to the remote monitoring and diagnosis center described later, and a router 12. The monitoring device 8 constantly collects plant data, and accumulates plant data in a predetermined cycle, for example, on a daily basis. In addition, when the monitoring device 8 detects that an abnormality has occurred in the plant, the monitoring device 8 stores the plant data corresponding to the location of the abnormality for a predetermined time before and after the occurrence of the abnormality, for example, 10 minutes before and after the abnormality, in the data storage files 9 and 10. Store. In addition, the data storage files 9 and 10 contain the requested data related to the plant components when a request is made to collect plant data from the remote monitoring and diagnosis center, which will be described later, regardless of whether or not an abnormality has occurred. Stored. The data stored in the data storage files 9 and 10 is transmitted to the general public line 13 via the personal computer 11 and the router 12 which are communicably connected to the outside of the power plant. The plant data transmitted from the site monitoring system 6 is sent to the remote monitoring and diagnosis center 14 via the general public line 13.

[0012] In the present embodiment shown in FIG. 1, two data storage files are provided as the site monitoring system 6, but the data storage file 9 is stored in a state inaccessible from the outside so that the plant data is not lost. It was installed in consideration of safety. On the other hand, the data storage file 10 is installed for transmitting plant data from the personal computer 11 to the outside. Further, in this embodiment, the general public line 13 is used as the means of communication to the outside, but the site monitoring system 6 and the remote monitoring / diagnosis center may be connected by a dedicated line.

[0013] The remote monitoring and diagnosis center 14 is roughly divided into a monitoring center 15 that receives plant data transmitted from the power plant 4 and monitors the power plant 4, and a technology based on the plant data received at the monitoring center 15. It consists of a technical center 16 that handles various problems.

First, the monitoring center 15 will be described. The monitoring center 15 is composed of a personal computer 17 that is communicably connected to a general public line 13 via a router 18 and a center-side monitoring system 19 that processes received plant data. The center-side monitoring system 19 stores a processing program 20 that processes the received plant data, an abnormality notification program 21 that notifies the maintenance engineer of the occurrence of an abnormality at the received power plant 4, and the received plant data. It has a data storage file 22 to be stored, and a database 23 that mainly stores the history of abnormality diagnosis for the occurrence of an abnormality in a power plant that has been carried out in the past. A pilot is assigned to the monitoring center 15.

[0015] In the abnormality notification program 21, by receiving the occurrence of an abnormality at the power plant, the first report of information such as when, at which power plant, and what kind of abnormality has occurred is sent to perform maintenance of the power plant. It has a function to notify the engineer. Here, the maintenance engineer can transmit the information more quickly and surely by owning the mobile terminal 24 such as a mobile device in order to receive the notification of the occurrence of the abnormality.

[0016] The data storage file 22 has a function of storing plant data transmitted from the site monitoring system 6. The plant data stored in the data storage file 22 is the same as the data stored in the data storage files 9 and 10 of the site monitoring system 6, and when an abnormality occurs in the plant as described above, when an abnormality occurs. The plant data corresponding to the location of the abnormality at the specified time before and after is stored. Further, when the remote monitoring and diagnosis center requests the site monitoring system 6 to transmit the plant data, the transmitted request data is stored. When plant data is constantly transmitted from the site monitoring system 6, the accumulated and stored data is updated at predetermined intervals.

[0017] The database 23 includes predictive diagnosis of abnormality occurrence based on plant data during normal operation, abnormality diagnosis of diagnosing what kind of abnormality has occurred based on plant data of abnormality occurrence, and what kind of abnormality. Trouble analysis that analyzes whether a trouble has occurred due to a reason, operation guidance that gives guidance on what kind of operation should be performed on a power plant where an abnormality has occurred, and other related information are accumulated over the years. .. In this way, by accumulating the diagnosis results of past executions in the database 19, by accessing the database 19 when necessary, it is possible to more efficiently diagnose abnormalities in a power plant composed of a plurality of devices. You will be able to do it.

[0018] When the monitoring center 15 configured in this way receives the occurrence of an abnormality from the power plant 4, the occurrence of the abnormality event and the plant data related to the abnormality event are technically transmitted via the firewall 25. Send to center 16. The transmission to the technical center 16 is performed based on the processing program provided in the center side monitoring system 19. In addition, a pilot member (observer) is assigned to the monitoring center 15, and it is possible to notify the corresponding department of the technical center 16 of the occurrence of an abnormality and send plant data according to the received abnormal event content. Is.

Next, the technical center 16 will be described. The technical center 16 is a personal computer 26,27 assigned to each department classified according to the type of abnormal event, product technical field, etc., and a data storage file for storing plant data transmitted to the personal computers 26,27. It is equipped with a large screen 30 that displays 28, 29, the occurrence of an abnormality, and its contents. As described above, this technical center 16 is composed of a plurality of departments, and technical staff (engineers) are assigned to each department. In the figure, only two computers, 28 and 29, are displayed, but multiple computers may be installed as needed.

[0020] In the technical center 16 configured as described above, abnormal events and plant data are transmitted in a state of being distributed to the department in charge corresponding to the abnormal event that has occurred by the processing program 20 and pilot personnel described above. It is a thing. The department in charge searches the database 23 for past abnormal occurrences and diagnosis contents as necessary, and diagnoses the received abnormal events. Information on the diagnosis result, the cause of the abnormality, and the countermeasures can be sent by e-mail to the personal computer 3 of the maintenance office 2 on the user side via the mail server 31 for technical supporters. It will be possible to take action. The computer 3 installed in the maintenance office 2 on the user side and the mail server 31 for technical supporters are connected to each other so as to be able to communicate with each other via the Internet 33, and the mail server 31 for technical supporters is connected via the firewall 32. Will be done.

[0021] Further, the technical center 16 is communicably connected to the design department 35 in charge of the product via the intranet 34. As an example, the design department 35 in charge is composed of 36 design departments in charge of machinery, 37 design departments in charge of auxiliary machinery, 38 design departments in charge of electricity, 39 design departments in charge of control, and 40 departments in charge of other related matters. The technical staff assigned to the technical center 16 mentioned above can contact the design department in charge related to the content of the abnormality from the personal computers 26 and 27 as needed.

[0022] In addition, the technical center diagnoses the collection result of the plant data that was carried out separately from the occurrence of the abnormality, and based on the diagnosis result, the user 1 side is provided with information on the wear status of the components of the power plant and the like. , Power plant maintenance plans, etc. can be contacted. Further, although not particularly shown, it is also possible to send a diagnosis result, a maintenance plan, etc. for an abnormality occurrence to the mobile terminal 24 of the maintenance engineer.

[0023] In addition, when the monitoring center 15 can respond to the occurrence of an abnormality, it is also possible to reply by e-mail from the monitoring center 15 via the technical support mail server 31.

[0024] FIG. 2 shows another embodiment of a remote monitoring and diagnostic system. In this embodiment, the local power plant 4 and the remote monitoring and diagnosis center 14 are connected by the Internet 41 instead of the general public line. Here, the personal computer 11 of the site monitoring system 6 connected to the Internet 41 is connected via the firewall 42 to prevent a third party from accessing the personal computer 11 to obtain plant data. Similarly, the personal computer 17 installed in the monitoring center 15 is also connected to the firewall 43 via the firewall.

[0025] FIGS. 3 and 4 show a system configuration diagram when the remote monitoring and diagnosis center 14 shown in FIGS. 1 and 2 is not installed. Since the product composition of a power plant or the like is complicated, the design department in charge may be dispersed in multiple locations. Therefore, in Fig. 1 and Fig. 2, after the remote monitoring and diagnosis center 14 collects plant monitoring and plant data, notification of abnormality occurrence and plant data are sent to the related design department, but the design department in charge If it is centralized in one place, it is not necessary to set up a remote monitoring and diagnosis center in a place other than the design department in charge. Therefore, in the embodiment shown in FIG. 3, the case where the design department in charge 35 and the remote monitoring and diagnosis center are installed in one place is shown.

[0026] The system configuration diagram shown in FIG. 3 is a system in which the on-site monitoring system 6 and the personal computer 17 serving as the user contact point are connected by a general public line 13 as in the case of FIG. Further, the system configuration diagram shown in FIG. 4 is a system in which the on-site monitoring system 6 and the personal computer 17 serving as the user contact point are connected by a general public line 13 as in the case shown in FIG. In FIGS. 3 and 4, the user is contacted from the mail server 31 at the user's window via the firewall 32 and the Internet 33.

[0027] FIGS. 5 (a) and 5 (b) show flowcharts of the remote monitoring and diagnosis system of the present embodiment shown in FIGS. 1 and 2. In the present embodiment described below, a communication means using a general public line as shown in FIG. 1 will be described as a representative.

As shown in FIG. 5A, in the remote monitoring and diagnosis system of this embodiment, the user 1 and the remote monitoring and diagnosis center 14 (monitoring center) are connected by a general public line 13, and the user side and the remote monitoring are remotely monitored. The communication terminal on the diagnostic center side is connected so that it can communicate (S1). Then, the on-site monitoring system 6 (user-side monitoring system) installed in the power plant 4 on the user side is activated (S2), and the remote monitoring and diagnosis system (center-side monitoring system) on the remote monitoring and diagnostic center 14 side is activated. (S3). From this state, the collection of plant data of the power plant is started (S4), the plant data is collected by the monitoring device 8, and the plant is continuously monitored. On the local equipment side where the monitoring is started and the remote monitoring and diagnosis center side, voice information indicating the start of plant monitoring is output or displayed on the display device. The plant data collected by continuous monitoring is accumulated in the monitoring device 8 as described above.

[0029] When an abnormality occurs in the power plant during continuous monitoring of the power plant by the on-site monitoring system 6 (S5), from the plant data accumulated in the monitoring device 8, the predetermined values before and after the detection of the abnormality occurrence. Collection of plant data related to the time, for example, 5 minutes before and after the occurrence of the anomaly, is started (S6), and the collected plant data is stored in the data storage file 10. In addition, the same data as the plant data stored in the data storage file 10 is stored in the data storage file 9 (S7).

Next, the on-site monitoring system 6 and the remote monitoring / diagnosis center 14 are connected by a transmission line (S8), and the abnormal event that has occurred and the related plant data related to the abnormal event are transmitted to the remote monitoring / diagnosis center 14. Is done (S9). The transmitted abnormal event and related data are received by the personal computer 17 of the monitoring center 15 (S10). Here, if the transmission of the related data from the site monitoring system 6 is not completed, the data is transmitted to the remote monitoring and diagnosis center 14 again. When the data transmission is completed, the transmission line is disconnected (S12) and the standby state is set.

[0031] When the remote monitoring and diagnosis center 14 receives that an abnormality has occurred in the power plant, the maintenance engineer's mobile terminal 24 or the personal computer 26 of the technical center 16 is notified of the abnormality occurrence (S13). ). When the monitoring center 15 receives an abnormality in the plant, the monitoring system 19 on the center side automatically operates to investigate the cause of the abnormality in the plant and provide emergency response support (S14). Here, the center-side monitoring system 19 starts searching the database 23 for past abnormality diagnosis and trouble analysis (S15). The database type is composed of a similar abnormality database 70, a parts history database 71, an operation history database 72, a parts structure database 73, a literature database 74, an operation knowledge database 75, and other related databases 76.

[0032] In the center-side monitoring system 19, after receiving the plant abnormality occurrence, the technical staff of the technical center 16 is notified of the abnormality occurrence and the related plant data is sent (S16). At the technical center 16, the received related plant data is transmitted as analysis data to the design department 35 in charge via the LAN line (intranet 34) (S17). At the related parties of the design department in charge, examination analysis and response processing for the occurrence of an abnormality are performed based on the transmitted analysis data (S18). The design department in charge will evaluate and examine the occurrence of abnormalities using the various databases 70 to 76 mentioned above. The mail server 31 informs the user (S19) of the examination result by e-mail or the like. It is also possible to contact by telephone or fax. These data and answer contents are registered in the database as a knowledge database (S20).

Further, a method of collecting plant data during normal plant operation will be described with reference to FIG. 5 (b). Apart from the occurrence of an abnormality in the plant, for example, when collecting plant data for use in plant status confirmation and maintenance planning, first connect the transmission line (S21) and when there is no abnormality in the plant. , The remote monitoring and diagnosis center 14 outputs a plant data collection request (S22). Then, the site monitoring system 6 starts collecting plant data related to the requested items from the plant data stored in the monitoring device 8, and stores the plant data in the data storage files 9 and 10 (S23). If there is no request for data collection, plant data is automatically collected at preset time intervals (S24).

[0034] When the collection of plant data is completed by the data collection request, the site monitoring system 6 is connected to the transmission line (S26), the collected plant data is transmitted to the remote monitoring and diagnosis center 14, and the plant is sent to the monitoring center 15. Data is received (S27). When the data transmission from the site monitoring system 6 is completed (S28), the transmission line is disconnected (S29). At the monitoring center 15, the received analysis data is stored in the data storage file 22 (S30) and transmitted to the technical center 16 and the related parties of the design department 35 in charge via the LAN line (S31). At the related party to which the analysis data is transmitted, examination analysis and response processing are performed based on the data (S32), and the analysis result is notified to the user (S33).

[0035] Next, a specific example of the remote monitoring and diagnosis method of the power plant using the above-mentioned remote monitoring and diagnosis system will be described using a gas turbine combustor as an example.

[0036] Gas turbine combustors can fail regardless of age. Causes of abnormality include clogging of the combustion burner, malfunction of the spark plug, failure of the fuel supply pump, clogging of the fuel filter, and the like. Exhaust gas temperature monitoring is performed as an abnormality monitoring of the current combustor, but in this exhaust temperature monitoring, when an alarm (abnormality) occurs, it takes time to identify the cause of which equipment in the gas turbine plant the abnormality occurred. Will be required. In addition, since the combustor is equipped with multiple cans for one gas turbine, when an abnormality occurs in the combustor, it is not possible to identify which of the multiple combustors has the abnormality. It was. Therefore, when an abnormality occurs in the combustor, the plant must be stopped to identify the cause, and it has been desired to reduce the downtime due to the combustor failure.

Therefore, in the present embodiment, a thermocouple is installed for each of the combustors of a plurality of cans arranged around the gas turbine shaft, and the combustion gas temperature of each combustor is monitored to monitor the combustors. I do.

[0038] Hereinafter, an example of determining the occurrence of an abnormality in the combustor will be described. In this embodiment, as described above, the data on the exhaust temperature detected by the thermocouple installed in each combustor is collected by the monitoring device 8 shown in FIG. 1, and the abnormality monitoring of each combustor is performed. Is done. Here, the monitoring device 8 monitors the trend of the exhaust temperature data of each thermocouple, for example, collects the data in 1-minute units and monitors a plurality of combustors. When the temperature difference between the data of two adjacent thermocouples becomes larger than a predetermined value, it is determined that an abnormality has occurred in the combustor. If an abnormality occurs in the detection data of one adjacent thermocouple, it is determined that the thermocouple is abnormal, not the combustor.

[0039] When the monitoring device 8 determines that an abnormality has occurred in the combustor, the data collected in the monitoring device 8 is used for a predetermined time before and after the occurrence of the abnormality in the combustor, for example, before and after the occurrence of the abnormality. Five minutes of data is stored in the data storage files 9 and 10, and notification of the occurrence of a combustor abnormality and data on the combustor abnormality stored in the data storage file 10 are transmitted to the remote monitoring and diagnosis center 14.

[0040] FIG. 6 shows a flowchart in the case where the power plant 4 and the remote monitoring / diagnosis center 14 are constantly monitored using a communication line. Since the contents of FIG. 6 are mostly the same as those of the intermittent connection shown in FIGS. 5 (a) and 5 (b), the different parts will be described below.

[0041] When the power plant is constantly monitored, the plant data collected by the site monitoring system 6 is transmitted to the remote monitoring and diagnosis center 14 via the general public line 13. The received plant data is stored in the data storage file 22, and when an abnormality is detected, the center monitoring system 19 sends a notification of the abnormality and related data related to the abnormality to the technical center (S54). ). In addition, the stored plant data is sent to related parties as analysis data when no abnormality has occurred (S58), and is used for evaluation and examination of life and performance (S59).

[0042] Fig. 7 shows an outline of the business processing of the center staff and related departments on the remote monitoring and diagnosis center 14 side. As staff in the remote monitoring and diagnosis center, engineers consisting of pilot staff (monitoring staff), center managers, and technical staff 11 are assigned. Product-related departments include product designers, maintenance personnel, manufacturers, etc.

[0043] When an abnormality occurs on the user equipment side, electronic data is transmitted to the remote monitoring and diagnosis center 14 side via the site monitoring system 6 (51). Pilot members confirm abnormal items, confirm related data, confirm the equipment status to the user side (52), and transmit information to related parties (53,54). For abnormalities that do not require inquiries or examinations to related parties (55), the center manager of the relevant department registered in advance by creating the cause, action, response operation, etc. in the remote monitoring and diagnosis center and describing it in the specified format. After 10 approvals (58), contact the user by email (68). In the unlikely event that the mail system goes down or the contents are unknown, we will contact you by telephone or fax.

[0044] The pilot judges the content of the abnormality and informs the director of the technical center of the situation and response (52). The center director confirms the contents and informs the technical staff of the examination request by e-mail in the prescribed format. If the cause investigation response operation becomes clear within the staff, the technical staff prepares a countermeasure action instruction and transmits it by e-mail or document (67). The pilot member informs the user of the contents of the contact 68. If the cause of the abnormality cannot be clearly determined and the countermeasures can be taken within the technical staff, a request for examination 54 is made to the department in charge of the product. When the relevant department decides what to do, contact the technical staff (64), and the technical staff will contact the pilot (65). The pilot will inform the user of the answer (68).

[0045] When the pilot member receives the abnormal data from the remote monitoring system, and when it is judged that the countermeasures are diverse and the examination becomes complicated, the persons concerned are gathered in the electronic conference room (60). After deciding what to do, inform the pilots of the details (63,66).

[0046] In the present embodiment, in order to promptly implement the response measures when an abnormality occurs in the equipment to the user and provide a sense of security, and to contact the user by telephone regarding the situation from the conventional user operation or maintenance personnel. In order to greatly improve the transmission form by means of communication, etc., we provide simultaneous monitoring and diagnosis support for multiple sites or multiple devices via communication lines (ISDN, Internet, intranet, video communication). Then, by creating a database of equipment operation status data as electronic information and monitoring and diagnosing in real time, the workload of users and manufacturers involved in countermeasures and processing can be significantly reduced, and successors and new users can be used. We have secured the optimum method for dealing with abnormalities for each facility so that we can pass on the technology to.

In addition, the introduction of this system has greatly improved the equipment utilization rate, and by simultaneously monitoring and diagnosing a plurality of sites and a plurality of units in the center, a large number of users and maker personnel are not required, and it is quick. It has merits such as being able to take appropriate measures against abnormalities.

[0048] In complex power generation equipment composed of large steam turbines, gas turbines and steam turbines, emergency and regular diesel power generation equipment, cogeneration power generation equipment, etc., there are multiple units at the same site, or remote islands in Japan and overseas. In areas such as the ground (where the distance from the power generation equipment to the maintenance team is far), it takes a lot of time to operate the equipment efficiently and take corrective action when a problem occurs. (The absence of a knowledgeable person or physical remoteness makes it impossible to respond.) The processing by the remote monitoring and diagnosis system of this embodiment currently applies to multiple power generation facilities at the same site or power generation facilities at multiple sites. All plant status and monitoring information (optionally selectable) can be converted into digitized signals by modifying the inside of the control device for external extraction or by installing a new measuring device. Then, it is transmitted to a facility that remotely monitors and diagnoses in real time via a communication line (ISDN line, Internet, intranet, wireless, etc.), and the following processing is performed.

When an alarm monitored by the plant control device occurs, the remote monitoring and diagnosis center can automatically detect the alarm occurrence via the line at the same time, and the analog &amp; digital information corresponding to the alarm name is abnormally generated. Collected at an arbitrary sampling cycle with an arbitrarily set time width before and after, displayed as numerical values and graph data, and automatically displayed the corresponding operation and cause estimation.

[0050] Drawings and other books necessary for identifying the cause are displayed on the screen as electronic data by inputting search information from the database stored in the host computer. Preliminary information on parts required for troubleshooting is displayed on the screen as electronic data by inputting the necessary search information.

[0051] Electronic data communication between the on-site monitoring system and the remote monitoring and diagnosis center can be carried out by any of general public lines (ISDN lines), the Internet, an intranet, and wireless communication.

[0052] In order to quickly carry out trouble processing, by inputting search information for information that has been input in advance as a database for trouble cases that have occurred in the past by event, cause, site, installation location, etc. It can be used. In addition, newly generated trouble information can be newly added and utilized.

[0053] In order to notify the equipment maintainer of the response operation when a trouble occurs and the cause estimation information, the information is also classified and the search information is input, or the trouble occurrence alarm is automatically displayed on the screen. It is input as knowledge data in advance.

[0054] The numerical values and graph information collected at the monitoring center provide information to the person in charge of equipment manufacturing via the Internet. In addition, information can be obtained from instructors who are visiting other sites via the Internet or public lines. The generated abnormality data and countermeasures can be stored as a database and used as information when an abnormality occurs with the same contents in the future. Basically, these processes are performed at the monitoring center.

[0055] According to the present embodiment, the user connects the remote monitoring and diagnosis center and the monitoring equipment by a communication line, automatically dials up when an abnormality occurs, and connects the line at the request of the center during normal operation. Abnormal or normal operation data obtained through a communication tool installed in equipment that requires monitoring and diagnosis can be obtained in real time or off-time. The obtained electronic data is automatically analyzed in the center, and the relevant departments and persons in charge are automatically notified of the occurrence of an abnormality, shortening the time until the response starts, and taking countermeasures. Even if similar events in the past such as drawings, inspection records, and previous records required for the above are required, they can be quickly obtained from the information stored in the database from the monitoring and diagnosis center. By utilizing the past database, parts and processes required for countermeasures can be easily created, and the department in charge within the manufacturer and users can be contacted quickly by e-mail or the like.

[0056] Further, it can be used for confirming the soundness of equipment during a trial run after a periodic inspection work or a planned stop, monitoring an abnormality during the trial run, and validating data.

[0057] When repairing or replacing equipment, in order to determine the availability of its components and the need for repair, the past measures for similar abnormalities and detailed examination results by the department in charge are monitored as electronic data. Comprehensive evaluation and judgment work can be easily carried out at the diagnostic center.

[0058] Power generation equipment can be roughly classified into a prime mover part, a generator part, auxiliary equipment, and control devices. At the monitoring and diagnosis center, the obtained data and questions from users are specialized by LAN. It can be transferred to the department and multiple examinations can be supported by the specialized department.

[0059] The merits on the user side according to this embodiment are as shown below. (1) The cost of dispatching engineers can be reduced. (2) Multiple devices can be remotely monitored by a small number of people at the same time. (3) Examination data when an abnormality occurs can be automatically transmitted. (4) Electronic data for countermeasures against the causes of troubles that have occurred can be used for user education. (5) By digitizing the driving data, the driving history can be easily managed, the efficiency of paperwork can be improved, and the space can be eliminated. (6) When an abnormality occurs, the abnormality information can be easily obtained even if the technician is away when the technician is dispatched to the user side, and the response time can be shortened. (7) With the abnormality prediction information, it is possible to notify the person in charge of equipment operation in advance of the measures to be taken before a serious abnormality occurs, and it is possible to eliminate the waiting time for information. (8) When an abnormality occurs By associating with the necessary drawings of the parts with the abnormality, it is possible to prevent the operator or the user from accidentally incorporating the parts when ordering or replacing the parts. (9) The operation history of the equipment can be saved as electronic data, and it can be created accurately when implementing an accurate plan at the time of maintenance execution.

[Effects of the Invention] According to the present invention,<u style="single">Gas turbine by identifying which of the multiple combustors the abnormality occurred</u>It has the effect of being able to provide a remote monitoring and diagnosis system and a remote monitoring and diagnosis method that can improve the operating rate of the plant.

BRIEF DESCRIPTION OF THE DRAWINGS [Fig. 1] Fig. 1 shows a system configuration diagram of a remote monitoring and diagnostic system according to an embodiment of the present invention.

FIG. 2 shows a system configuration diagram of a remote monitoring and diagnosis system according to another embodiment of the present invention.

FIG. 3 shows a system configuration diagram of a remote monitoring and diagnosis system according to another embodiment of the present invention.

FIG. 4 shows a system configuration diagram of a remote monitoring and diagnosis system according to another embodiment of the present invention.

FIG. 5 (a) is a diagram showing a flowchart at the time of intermittent connection of the remote monitoring and diagnosis system of this embodiment.

FIG. 5 (b) is a diagram showing a flowchart at the time of intermittent connection of the remote monitoring and diagnosis system of this embodiment.

FIG. 6 is a diagram showing a flowchart during continuous monitoring of the remote monitoring and diagnosis system of this embodiment.

FIG. 7 is a diagram showing an outline of business processing in a remote monitoring and diagnosis center and between product personnel.

[Explanation of codes] 1 ... User, 2 ... User side maintenance office, 4 ... Power plant, 6 ... Site monitoring system, 14 ... Remote monitoring and diagnostic center, 15 ... Monitoring center, 16 ... technical center, 19 ... center side monitoring system, 35 ... design department in charge.