Display device, display method, control device, and computer program

Abstract

[Problem] To provide a display device, a display method, a control device, and a computer program that make it possible even for inexperienced operators to easily add new guide information. [Solution] The invention is a display device comprising a display screen. A warning is issued by displaying a warning relating to the operation status of a plant on the display screen of the display device. The region for adding guide information displayed in such instances is displayed on the display screen.

Description

[Technical field]

[0001] The present invention relates to a display device, a display method, a control device, and a computer program. [Background technology]

[0002] Conventionally, sensors are installed in monitored equipment such as plants, and the operating status of the monitored equipment is monitored based on the data acquired by the sensors. When an abnormality occurs in the monitored equipment, an alarm is issued and guide information containing a course of action is displayed to support the operator. The guide information is created by experienced operators who spend a great deal of time examining various information based on their own knowledge and experience.

[0003] Furthermore, Patent Document 1 describes a "plant operation history storage unit" that "records the operations performed in each operating state" (paragraph

[0038] ), and a "plant monitoring device" that "classifies the operation history into predetermined operating states, and creates and displays operation guide data which are recommended actions for each operating state" (paragraph

[0040] ). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2014-32633 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, the guide information created based on the knowledge of an experienced operator is inevitably highly dependent on the individual operator, and therefore an inexperienced operator cannot easily create similar guide information.

[0006] Moreover, the plant monitoring device described in Patent Document 1 merely displays recommended operations to be performed in routine work, such as excluding equipment under inspection from monitoring targets, based on past operation history. Meanwhile, the response policy when an alarm is issued often does not involve plant operation. For this reason, it is difficult to create guide information when an alarm is issued based on the past operation history of the plant.

[0007] Furthermore, the plant monitoring device described in Patent Document 1 discloses that the operation guide pattern to be referenced can be selected from an "operation guide selection pattern list" (paragraph

[0047] , Figure 6). However, since the operation guide patterns are merely obtained from the past plant operation history, they do not allow the addition of new information.

[0008] Therefore, an object of the present invention is to provide a display device, a display method, a control device, and a computer program that enable even an inexperienced operator to easily add new guide information. [Means for solving the problem]

[0009] The present disclosure provides a display device having a display screen, the display device being configured to display on the display screen an area for adding guide information that is to be displayed when a warning occurs regarding the operating status of a plant.

[0010] Furthermore, the guide information may be displayed in a first area of ​​the display screen, and the area for adding the guide information may be displayed in a second area juxtaposed to the first area of ​​the display screen.

[0011] Furthermore, the system may be configured to display at least one word contained in information describing the past operating conditions of the plant, and to display the information containing the selected word on the display screen.

[0012] Furthermore, the words may be extracted by executing a step of calculating a feature value of at least one of the words based on information describing the past operating conditions of the plant, and a step of calculating an importance of at least one of the words based on the feature value of the words, and the words may be configured to be displayed on the display screen together with the importance of the words.

[0013] The present disclosure provides a display method including a step of displaying, on a display screen of a display device, an area for adding guide information to be displayed when a warning regarding the operating status of a plant is issued.

[0014] The present disclosure provides a control device that controls a display device having a display screen, and is configured to display on the display screen an area for adding guide information that is displayed when a warning occurs regarding the operating status of a plant.

[0015] The present disclosure provides a computer program that causes a computer for controlling a display device having a display screen to execute a step of displaying on the display screen an area for adding guide information that is to be displayed when a warning occurs regarding the operating status of a plant. [Brief description of the drawings]

[0016] [Figure 1] FIG. 1 is a schematic diagram showing the overall configuration of the plant. [Diagram 2] FIG. 2 is a functional block diagram of the plant, the DCS, and the operation support system. [Diagram 3] FIG. 3 is an example of guide information displayed on the display screen of the display device. [Figure 4] FIG. 4 is a functional block diagram of the important word extraction unit. [Diagram 5] FIG. 5 is an example in which an excerpt list of a driving log or the like is displayed side by side with a free entry box. [Figure 6] FIG. 6 is a diagram showing the physical configuration of the driving assistance system 30. As shown in FIG. [Figure 7]FIG. 7 is a flowchart of a driving assistance method including a display method according to this embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. The following preferred embodiments are merely examples for explaining the present invention, and are not intended to limit the present invention to the preferred embodiments. The monitored equipment to which the present invention is applied includes plants. The plants are, for example, power plants including boilers, incineration plants, chemical plants, wastewater treatment plants, and the like, from which process data can be obtained. In addition to the example of process data in power plants described in the following embodiment, the process data in waste incineration plants includes, for example, the amount and temperature of air fed into the incinerator, the gas temperature and composition factor at the furnace outlet, and measurement data such as the temperature, pressure, flow rate, and combustion state of each part measured by a sensor or the like. The process data in chemical plants includes, for example, the temperature difference between processes or between two or more thermocouples, the operating pressure, product flow parameters (velocity, density, etc.), the flow rate of cooling water, output measurements, valve sensor data, and the like. The process data in wastewater treatment plants includes, for example, the amount of raw water flowing in and out of tanks, water level, treated water quality, and the operation amount of equipment operation such as various pumps, which are output from each sensor and each watt-hour meter.

[0018] [Plant description] FIG. 1 is a schematic diagram showing the overall configuration of a plant 1, which is an example of a monitored object to which the present invention is applied. The plant 1 according to this embodiment is, for example, a power generation plant equipped with a circulating fluidized bed boiler (circulating fluidized bed type) that generates steam by burning fuel while circulating a circulating material such as silica sand that flows at high temperature. As fuel for the plant 1, in addition to fossil fuels such as coal, for example, non-fossil fuels (wood biomass, waste tires, waste plastics, sludge, etc.) can be used. The steam generated in the plant 1 is used to drive a turbine 100.

[0019] The plant 1 is configured to burn fuel in a furnace 2, separate the circulating material from the exhaust gas by a cyclone 3 that functions as a solid-gas separator, and return the separated circulating material to the furnace 2 for circulation. The separated circulating material is returned to the bottom of the furnace 2 via a circulating material recovery pipe 4 connected to the bottom of the cyclone 3. The bottom of the circulating material recovery pipe 4 and the bottom of the furnace 2 are connected via a loop seal section 4a with a narrowed flow path. This results in a predetermined amount of circulating material being stored in the bottom of the circulating material recovery pipe 4. The exhaust gas from which the circulating material has been removed by the cyclone 3 is supplied to the rear flue 5 via the exhaust gas flow path 3a.

[0020] The boiler includes a furnace 2 for burning fuel and a heat exchanger for generating steam and the like using heat obtained by the combustion. A fuel supply port 2a for supplying fuel is provided in the middle of the furnace 2, and a gas outlet 2b for discharging combustion gas is provided in the upper part of the furnace 2. Fuel supplied to the furnace 2 from a fuel supply device (not shown) is supplied to the inside of the furnace 2 through the fuel supply port 2a. In addition, a furnace wall tube 6 for heating boiler feed water is provided on the furnace wall of the furnace 2. The boiler feed water flowing through the furnace wall tube 6 is heated by combustion in the furnace 2.

[0021] In the furnace 2, the solids containing the fuel supplied from the fuel supply port 2a are fluidized by the air for combustion and fluidization introduced from the air supply line 2c at the bottom, and the fuel is burned at about 800 to 900°C while flowing. The combustion gas generated in the furnace 2 is introduced into the cyclone 3 together with the circulating material. The cyclone 3 separates the circulating material from the gas by centrifugal separation, and returns the separated circulating material to the furnace 2 via the circulating material recovery pipe 4, while sending the combustion gas from which the circulating material has been removed through the exhaust gas flow path 3a to the rear flue 5.

[0022] In the furnace 2, a part of the circulating material, called the in-furnace bed material, accumulates at the bottom. This bed material may contain bed material with a coarse particle size that is unsuitable for circulating flow and exhaust combustion impurities, and these bed materials that are unsuitable for circulating flow may cause poor flow. Therefore, in order to suppress poor flow, the in-furnace bed material is continuously or intermittently discharged to the outside from the discharge port 2d at the bottom of the furnace 2. After removing unsuitable materials such as metals and coarse particle size from the discharged bed material on a circulation line not shown, the discharged bed material is either supplied to the furnace 2 again or discarded as it is. The circulating material of the furnace 2 circulates in a circulation system consisting of the furnace 2, the cyclone 3, and the circulating material recovery pipe 4.

[0023] The rear flue 5 has a flow path for flowing the gas discharged from the cyclone 3 to the rear stage. The rear flue 5 has a superheater 10 that generates superheated steam and an economizer 12 that preheats boiler feed water as an exhaust heat recovery section that recovers heat from the exhaust gas. The exhaust gas flowing through the rear flue 5 is cooled by heat exchange with the steam and boiler feed water flowing through the superheater 10 and the economizer 12. In addition, the rear flue 5 has a steam drum 8 in which the boiler feed water that has passed through the economizer 12 is stored, and the steam drum 8 is also connected to the furnace wall tube 6.

[0024] The economizer 12 transfers heat from the exhaust gas to the boiler feed water to preheat the boiler feed water. The economizer 12 is connected to the pump 7 by a pipe 21, and is also connected to the steam drum 8 by a pipe 22. The boiler feed water is supplied from the pump 7 through the pipe 21 to the economizer 12 and preheated by the economizer 12, and is then supplied to the steam drum 8 through the pipe 22.

[0025] A downcomer pipe 8a and a furnace wall pipe 6 are connected to the steam drum 8. The boiler feed water in the steam drum 8 flows down the downcomer pipe 8a, is introduced into the furnace wall pipe 6 at the lower side of the furnace 2, and flows toward the steam drum 8. The boiler feed water in the furnace wall pipe 6 is heated by the combustion heat generated in the furnace 2, and evaporates in the steam drum 8 to become steam.

[0026] A saturated steam pipe 8b that discharges the steam inside is connected to the steam drum 8. The saturated steam pipe 8b connects the steam drum 8 and a superheater 10. The steam inside the steam drum 8 is supplied to the superheater 10 via the saturated steam pipe 8b. The superheater 10 superheats the steam using the heat of the exhaust gas to generate superheated steam. The superheated steam passes through a pipe 10a and is supplied to a turbine 100 outside the plant 1 and is used for power generation.

[0027] The pressure and temperature of the steam discharged from the turbine 100 are lower than the pressure and temperature of the steam discharged from the superheater 10. Although not particularly limited, the pressure of the steam supplied to the turbine 100 is about 10 to 17 MPa, and the temperature is about 530 to 570°C. The pressure of the steam discharged from the turbine 100 is about 3 to 5 MPa, and the temperature is about 350 to 400°C.

[0028] A condenser 102 is provided downstream of the turbine 100. The steam discharged from the turbine 100 is supplied to the condenser 102, where it is condensed and returned to saturated water, and then supplied to the pump 7. A generator is connected to the turbine 100, which converts kinetic energy obtained by the rotation of the turbine 100 into electrical energy.

[0029] The pump 7a supplies makeup water so as to maintain a constant water level in the condenser 102. In Fig. 1, a flow rate u1 of makeup water supplied by the pump 7a (an example of "process data") is shown.

[0030] The process data handled in this embodiment may be any data related to the plant 1, and may be, for example, data obtained by measuring the state of the plant 1 with a sensor (an example of "process data"), and more specifically, may include measured values ​​of the temperature, pressure, flow rate, and the like of the plant 1. FIG. 1 shows a boiler feedwater flow rate u2 (an example of "process data") supplied from the pump 7 to the economizer 12. FIG. 1 also shows a boiler outlet steam flow rate u3 (an example of "process data") supplied from the superheater 10 to the turbine 100, and a saturated steam flow rate u4 (an example of "process data") supplied from the steam drum 8 to the superheater 10. The make-up water flow rate u1 may be controlled to follow the saturated steam flow rate u4. The boiler feedwater flow rate u2 may be controlled to be adjusted while monitoring both the boiler outlet steam flow rate u3 (or the superheated steam flow rate) and the liquid level of the steam drum 8.

[0031] If a hole occurs in the pipe system that constitutes the plant 1, the make-up water flow rate u1 increases, and the flow rate difference between the boiler feedwater flow rate u2 and the boiler outlet steam flow rate u3 increases. A DCS (Distributed Control System, FIG. 2) 20 receives process data of the plant 1, such as the make-up water flow rate u1, the boiler feedwater flow rate u2, the boiler outlet steam flow rate u3, and the saturated steam flow rate u4, from the plant 1, monitors the operating status of the plant 1, and monitors whether any abnormality has occurred in the plant 1. As will be described later, a monitoring device 40 evaluates the process data based on alarm judgment logic set for each type of abnormality, and when it is determined that an abnormality has occurred, causes a display device 50 to issue an alarm.

[0032] Although the make-up water flow rate u1, the boiler feed water flow rate u2, the boiler outlet steam flow rate u3, and the saturated steam flow rate u4 are exemplified as process data, other data may be used as the process data for the plant 1. The process data for the plant 1 may be other data such as temperature and pressure, or data calculated based on a plurality of process data, or may be uncalculated data acquired from a sensor or the like.

[0033] FIG. 2 is a functional block diagram of the plant 1, the DCS 20, and the operation support system 30 according to this embodiment.

[0034] The DCS 20 is a distributed control system for controlling the plant 1. The DCS 20 acquires process data from sensors and the like installed in the plant 1, and supplies a control signal to the plant 1 for controlling the plant 1 based on the process data.

[0035] The operation support system 30 includes an edge / cloud computing unit 32 that acquires process data from the DCS 20, a monitoring device 40 that acquires the process data from the edge / cloud computing unit 32 and monitors the plant 1 based on the process data, and a display device 50 that displays the operating status of the plant 1 for the operator. The monitoring device 40 (an example of a "control device") also functions as a control device that controls the display device 50. Specifically, the monitoring device 40 acquires the process data and determines the presence or absence of an abnormality based on the process data, and when it is determined that an abnormality has occurred, causes the display device 50 to issue an alarm (an example of a "warning"). When issuing an alarm, the monitoring device 40 acquires information to be displayed when an alarm is issued, such as guide information (described later), from a database described later, and displays the information on the display screen of the display device 50.

[0036] The edge / cloud computing unit 32 includes a plurality of edge servers distributed at the periphery of the network, and a cloud data server that collects process data from the plurality of edge servers and provides the process data to the monitoring device 40. By including the edge / cloud computing unit 32, it is possible to suitably collect process data from a large-scale monitoring device or from multiple distributed monitoring devices. However, the driving assistance system 30 does not necessarily need to include the edge / cloud computing unit 32. In that case, the driving assistance system 30 acquires the process data from the DCS 20 via the network.

[0037] The monitoring device 40 includes an alarm display control unit 42 and a storage unit 44 . The alarm display control unit 42 includes a process data acquisition unit 42A that acquires process data from the edge / cloud computing unit 32, an alarm determination unit 42B that determines whether or not an alarm needs to be issued based on the process data acquired by the process data acquisition unit 42A, an alarm information display unit 42C that causes the display device 50 to display alarm-related information including guide information for guiding the user on how to respond when an alarm is issued together with the alarm issued when the alarm determination unit 42B determines that an alarm needs to be issued, and a standard guide setting unit 42D that sets standard guide information to be displayed on the display device 50.

[0038] Furthermore, the alarm display control unit 42 is configured to be able to add guide information. Specifically, the alarm display control unit 42 includes an important word extraction unit 42E for extracting important words (an example of "words") from the daily driving report DB 44C, and a guide addition setting unit 42F for displaying the importance of the extracted important words and a part of the daily driving report including the important words on the display device 50 as candidates for guide information to be added, and for receiving an input of additional guide information to be added to the standard guide information.

[0039] The storage unit 44 of the monitoring device includes an alarm information DB 44A, a guide information DB 44B, and a daily driving report DB 44C. First, each database of the storage unit 44 will be described.

[0040] The alarm information DB 44A stores alarm determination logic (determination criteria) for determining whether an alarm indicating an abnormality or the like of the plant 1 has occurred based on the process data, and information on the history of alarms issued in the past (information including alarm identification information, alarm occurrence date and time, etc.). Specifically, the alarm determination logic is stored for each alarm in association with the alarm identification information, alarm classification information, and evaluation item name of the process data related to the alarm. The alarm determination logic may be one that specifies a determination criterion for whether or not the value of the process data exceeds a threshold based on the process data acquired from a single sensor, or may specify a determination criterion based on the process data acquired from multiple types of sensors according to a predetermined algorithm (including one based on a predetermined trained model generated by machine learning, and one based on a mathematical formula or mathematical model derived by performing a multivariate analysis or the like on the process data of multiple sensors).

[0041] The guide information DB 44B stores guide information for guiding how to respond when an alarm is issued. The guide information includes standard guide information previously set by the standard guide setting unit 42D and additional guide information added by the guide addition setting unit 42F.

[0042] For example, the guide information DB 44B records, for each alarm, a sentence entitled "1. Monitoring points (how to read the graph)" that explains how to grasp the event from the graph, and a sentence entitled "2. How to respond" that explains how to optimize the state of the process data. Note that the method for optimizing the state of the process data is, for example, a method for optimizing the state of the process data of interest that exceeds a threshold to within the threshold.

[0043] FIG. 3 shows an example of guide information displayed on the display screen of the display device 50 when the alarm that has been issued is "Circulation System Temperature Difference 1." In "1. Monitoring Points (How to Read the Graph)," the definition of the furnace temperature difference and the calculation formula are described. Such explanatory text allows the operator to confirm how to grasp the event from the graph, and makes it easier to understand what event has occurred. In "2. How to Respond," items that the operator should confirm depending on the magnitude of the furnace temperature difference are listed. Such explanatory text makes it possible to confirm how to optimize the state of the process data. The guide information may include images, legend graphs, and the like in addition to text information and formulas. Furthermore, the information may have a function of displaying the time when the same alarm was issued in the past.

[0044] The daily operation report DB 44C stores information related to the actual operating status of the plant 1. The information related to the actual operating status of the plant 1 includes, for example, an operation log (daily operation report) in which an operator records the results of observing the operating status of the equipment in the plant 1 that the operator is responsible for, in order to hand it over to the next operator. The daily operation report may be created for each piece of equipment, such as a boiler or a turbine, or for the entire plant. In addition, the daily operation report is preferably created periodically (for example, at least once a day). The information related to the actual operating status of the plant 1 may include a monthly operation report, maintenance information for the equipment in the operator's charge, inspection records, repair information, and failure history.

[0045] Next, each functional block of the alarm display control unit 42 will be described. The process data acquisition unit 42A acquires process data from the edge / cloud computing unit 32.

[0046] The alarm determination unit 42B determines whether an abnormality or the like has occurred in the plant 1 based on the process data, and when it is determined that an abnormality has occurred, it causes the display device 50 to issue an alarm. Specifically, the alarm determination unit 42B reads out an alarm determination logic (determination criteria) recorded in the alarm information DB 44A, and evaluates the process data according to this alarm determination logic. For example, the alarm determination unit 42B evaluates predetermined process data based on the alarm determination logic, determines whether an abnormality that may occur in the plant 1, such as a blowout (such as a boiler tube leak, in which metal materials such as tubes and pipes constituting a boiler are damaged and ruptured, causing internal steam to leak to the outside. This includes a state in which a blowout is likely to occur in the future. The same applies below), and when it is determined that a blowout has occurred, it causes the display device 50 to issue an alarm. At the same time, the alarm determination unit 42B records the occurrence of an abnormality in the alarm information DB 44A.

[0047] When the alarm determination unit 42B determines that an alarm needs to be issued, the alarm information display unit 42C displays information for the operator to confirm whether an alarm is appropriate on the display device 50. Information on past and current alarms acquired from the alarm determination unit 42B is displayed in list form on the display screen of the display device 50. Furthermore, when the operator double-clicks (selects) a specific alarm, the alarm information display unit 42C acquires guide information corresponding to the selected alarm and displays it on the display screen.

[0048] The standard guide setting unit 42D sets standard guide information, which is preset guide information, among guide information corresponding to an alarm response policy (including information specifying process data, etc., that an operator should check in order to determine whether an alarm is appropriate when an alarm is issued).The standard guide information is typically highly versatile information that is set by a skilled operator based on his or her own knowledge and experience before operating a plant (or is information that can be set before operating a plant).

[0049] The important word extraction unit 42E extracts important words (an example of "words") from the daily driving report DB 44C to assist the driver in setting additional guide information. The important word extraction unit 42E shown in this embodiment extracts important words by extracting a plurality of words from the daily driving report and calculating their importance using a known natural language processing method. FIG. 4 shows a functional block diagram of the important word extraction unit 42E. As shown in the figure, the important word extraction unit 42E includes an information extraction unit 42E1 that extracts words that may become important words from the daily driving report, a feature amount calculation unit 42E2 that calculates statistical information of each word extracted by the information extraction unit 42E1, and an importance calculation unit 42E3 that calculates the importance of each word based on the statistical information of each word.

[0050] The information extraction unit 42E1 divides the driving report and other information, which is written in natural language, into morphemes, performs morpheme analysis to identify morphemes whose parts of speech are words, and performs unnecessary part-of-speech filtering and unnecessary word filtering to remove unnecessary words from the morphemes that cannot be particles, other parts of speech, or key words.

[0051] The feature calculation unit 42E2 calculates statistical information such as the number of occurrences of the words extracted by the information extraction unit 42E1. Specifically, it calculates the occurrence frequency of each word (an example of a "feature"), the n-gram co-occurrence frequency (an example of a "feature"), and the frequency distribution (an example of a "feature"). Note that the n-gram co-occurrence frequency is the co-occurrence frequency of N adjacent words.

[0052] The importance calculation unit 42E3 calculates information indicating the importance of each word based on the statistical information of each word calculated by the feature calculation unit 42E2. The importance calculation unit 42E3 calculates the information indicating the importance based on at least one of TF (Term Frequency), IDF (Inverse Document Frequency), TF-IDF, and concatenation frequency, for example.

[0053] Here, TF (an example of "importance") is the number of documents j (or sentence j) to count the number of occurrences of a given word in the document. j (or sentence j ) by the total number of words contained in the document. IDF (an example of "importance") is a value calculated as the logarithm of the total number of documents (or the total number of sentences) divided by the number of documents (or the number of sentences) in which a specific word appears. TF indicates the frequency of occurrence of a specific word for each document (or sentence). IDF indicates a low value for a word that is used across multiple documents (or sentences). TF-IDF is a value obtained by multiplying TF by IDF. Therefore, TF-IDF (an example of "importance") is an index that indicates a high value for a word that appears primarily in only some documents (or sentences), rather than a word that is used across multiple documents (or sentences). The importance calculation unit 42E3, for example, extracts words with high TF-IDF values ​​as important words, and displays them on the display device 50 together with the TF-IDF value (an example of "importance"). Equation 1 is expressed as TF (tf i,j ), IDF(idf i ) and an example of a formula for calculating TF-IDF (tfidf) are shown below.

number

[0054] The importance calculation unit 42E3 may calculate information indicating the importance of each word based on the concatenation frequency (an example of "importance"). For example, the concatenation frequency may be calculated based on the FLR method, which counts the frequency with which a certain word is used in combination with another word, and a word having a high value may be extracted as an important word. Since a word with high importance (e.g., "circulating particles") is often used in combination with another word with high importance (e.g., "lower furnace temperature"), it is also possible to extract a word with high importance by using the concatenation frequency. FIG. 4 shows an example of an important word list L1, which is an example of important words extracted by the important word extraction unit 42E and their importance (score).

[0055] The guide addition setting unit 42F sets additional guide information to be added to the standard guide information. The additional guide information is typically guide information based on information obtained by an operator observing the plant after the plant has started operating. Since the information is obtained by actually operating the plant, the additional guide information corresponds to information that reflects circumstances specific to the plant.

[0056] Therefore, while the standard guide information corresponds to guide information that is likely to be applicable to plants other than plant 1, the additional guide information is guide information that may not be applicable to plants other than plant 1.

[0057] The guide addition setting unit 42F displays a free entry frame FL (an example of an "area for adding guide information") for receiving additional guide information on the display screen of the display device 50. The guide addition setting unit 42F accepts the information input by the operator in this free entry frame as additional guide information, and records it in the guide information DB 44B.

[0058] The guide addition setting unit 42F in this embodiment further displays standard guide information and a list L1 (FIG. 4) showing important words and their importance in different areas of the display screen of the display device 50 to assist the driver in inputting additional guide information.

[0059] In addition, when one of the important words is selected by the driver, the guide addition setting unit 42F accesses the daily driving report DB 44C, reads a part of the daily driving report etc. that contains the selected important word, and displays it in a different area of ​​the display screen of the display device 50.

[0060] Therefore, when the driver inputs additional guide information, the guide addition setting unit 42F is configured to simultaneously display standard guide information (Figure 3) corresponding to the guide information before the addition, a list L1 (Figure 4) showing important words and their importance, an excerpt from the driving log or the like containing the selected important words, and a free entry field.

[0061] It is preferable that the standard guide information (FIG. 3) and the free entry box are configured so that they can be displayed side by side (i.e., arranged in the same vertical or horizontal position on the display screen). For example, the standard guide information may be displayed in the left area of ​​the display screen (an example of a "first area"), and the free entry box may be displayed in the right area of ​​the display screen (an example of a "second area"). By displaying them in this manner, it becomes possible to input content that does not contradict the standard guide information as additional guide information while checking the standard guide information.

[0062] Furthermore, when a different important word in the list L1 is selected by the operator, the guide addition setting unit 42F accesses the daily driving report DB 44C, reads a part of the daily driving report etc. including the newly selected important word, and displays it in a different area of ​​the display screen of the display device 50. By displaying it in this manner, it becomes possible to input additional guide information while referring to the daily driving report etc. related to a plurality of important words.

[0063] 5 shows an example in which, when the operator selects an important word "circulating particles", a list L2 of excerpts from the driving log etc. including "circulating particles" and a free entry field FL (guide entry field) are displayed side by side on the display screen of the display device 50. As shown in the figure, the guide addition setting unit 42F may highlight the selected important word.

[0064] As shown in the figure, the guide addition setting unit 42F may create a list L2 so as to extract sentences including important words for multiple dates and times from a driving log, etc. By extracting sentences including important words for multiple dates and times, it becomes possible to efficiently find related sentences.

[0065] Furthermore, the guide addition setting unit 42F may create the list L2 so that sentences that have contributed to the importance (for example, sentences with a large TF) are displayed at the top.

[0066] Furthermore, the guide addition setting unit 42F may access the alarm information DB 44A and create the list L2 so as to display at the top a text or the like created on the day (or before or after) when an alarm corresponding to the additional guide information occurred. The display device according to this embodiment displays on the display screen an area for adding guide information to be displayed when a warning regarding the operating status of the plant occurs, and simultaneously displays information regarding the past operating status of the plant when a warning identical to this warning (or of the same category) occurs.

[0067] 6 is a diagram showing a physical configuration for realizing the driving assistance system 30 according to this embodiment. However, since the edge / cloud computing unit 32 can adopt a known physical configuration, a description thereof will be omitted, and the following will describe the physical configuration of the driving assistance system 30 excluding the edge / cloud computing unit 32.

[0068] The driving assistance system 30 has a central processing unit (CPU) 30A corresponding to a calculation unit, a random access memory (RAM) 30B and a read only memory (ROM) 30C corresponding to a storage unit, a communication unit 30D, an input unit 30E, and a display unit 30F. These components are connected to each other via a bus so that data can be transmitted and received. In this example, the driving assistance system 30 is configured by one computer, but the driving assistance system 30 may be configured by multiple computers. For example, the display unit 30F may be configured by multiple displays. In addition, the configuration shown in FIG. 6 is only an example, and some of these components may not be included. Furthermore, some of the components may be provided in a remote location. For example, a part of the ROM 30C may be provided in a remote location and configured to be communicable via a communication network.

[0069] The CPU 30A is a calculation unit that performs control processing and calculation processing, etc., included in the present disclosure by executing computer programs, etc., recorded in the ROM 30C, etc. The CPU 30A is equipped with a processor. The CPU 30A receives various information (including process data) from the RAM 30B, the ROM 30C, the communication unit 30D, the input unit 30E, etc., and displays the calculation processing results, etc., on the display unit 30F or stores them in the RAM 30B or the ROM 30C.

[0070] The RAM 30B functions as a cache memory in the storage unit, and may be configured with volatile semiconductor memory elements such as SRAM and DRAM.

[0071] The ROM 30C functions as the main memory of the storage unit, and may be configured, for example, as a non-volatile semiconductor memory element such as a flash memory that allows information to be electrically rewritten, or a HDD that allows information to be magnetically rewritten. The ROM 30C may store, for example, computer programs and data for executing processes including the various controls and arithmetic processes shown in the present disclosure.

[0072] The communication unit 30D is an interface for connecting the driving assistance system 30 to other devices such as the DCS 20. The communication unit 30D may be connected to a communication network such as the Internet.

[0073] The input unit 30E receives data input from the operator (including selection of important words in this disclosure and input of additional guide information), and may include, for example, a mouse, a keyboard, and a touch panel.

[0074] The display unit 30F visually displays the results of the calculations performed by the CPU 30A, and may be configured, for example, by an LCD (Liquid Crystal Display).

[0075] In the physical configuration described above, the various functions constituting the alarm display control unit 42 of the monitoring device 40 can be realized mainly by the CPU 30A executing a computer program, the various databases constituting the memory unit 44 can be realized mainly from the ROM 30C, and the display device 50 can be realized mainly from the display unit 30F.

[0076] [Display method] Hereinafter, a series of driving support methods will be described, including a display method for creating guide information to be displayed when an alarm is issued to the driver using the driving support system 30. Fig. 7 is a flowchart including such a display method.

[0077] First, standard guide information is created. An experienced operator inputs standard guide information summarizing a response policy (including information specifying process data, etc., that the operator should check in order to determine whether an alarm is appropriate when the alarm is issued) for each alarm, based on the standard guide setting unit 42D of the operation support system 30. The standard guide information is typically highly versatile guide information that is created in advance before the operation of the plant 1 is started, and may include information that can be used in other plants of the same type. The input standard guide information is registered in the guide information DB 44B.

[0078] Thereafter, the plant 1 starts operating. The operator records an operation log every day based on the actual operating status of the plant 1. The operation log is stored and accumulated in the operation log DB 44C. Furthermore, the alarm determination unit 42B evaluates predetermined process data based on alarm determination logic to determine whether an abnormality has occurred. If it is determined that an abnormality has occurred, the monitoring device 40 causes the display device 50 to issue an alarm and display guide information. The guide information displayed at this time corresponds to standard guide information that has been set in advance. The operator deals with the alarm based on the standard guide information.

[0079] After a sufficient period of time has passed, the operator starts setting additional guide information for a given alarm. First, the important word extraction unit 42E accesses the daily driving report DB 44C and acquires information on the actual operating situation such as the daily driving report (step S71).

[0080] Next, the important word extraction unit 42E extracts important words based on the acquired information (step S72). A list of important words and their importance, current guide information, and a free entry box FL are displayed on the display screen of the display device 50. The guide information and the free entry box FL are displayed, for example, side by side in the horizontal direction of the display screen.

[0081] The important word extraction unit 42E may be configured to extract different important words depending on the content of the alarm. For example, the importance calculation unit 42E3 may be configured to calculate the importance of a predetermined word for a predetermined alarm so that the importance of the predetermined word is high in advance. Also, the information extraction unit 42E1 may be configured to filter out words that are less related to the alarm and exclude them from the important words depending on the content of the alarm.

[0082] The operator checks the list of important words and their importance (step S73) and selects an important word by referring to the importance (score) (step S74). When one of the important words is selected by the operator, the guide addition setting unit 42F accesses the daily driving report DB 44C, reads a part of the daily driving report etc. including the selected important word, and displays it in a different area of ​​the display screen of the display device 50. At this time, by displaying multiple candidates of sentences including the important word, it becomes possible to efficiently find information suitable for additional guide information.

[0083] The operator checks the guide information and the extracts of the daily driving report, etc. (step S75), and determines whether there is any information that should be added to the guide information (step S76).

[0084] If it is determined that there is information to be added to the guide information (YES), the operator inputs additional guide information to be added to the free entry box FL based on an excerpt from the daily driving report, etc. (step S77). The guide addition setting unit 42F accepts the information input by the operator in the free entry box FL as additional guide information, and records it in the guide information DB 44B. After that, when an alarm is issued, the guide information including the additional guide information is displayed on the display screen of the display device 50.

[0085] Here, the additional guide information may be information based on differences in the specifications of the equipment of the plant. The specifications of the equipment of the plant vary depending on the power generation scale of the plant, and the standard guide information may describe only a policy of action that generally applies to boilers without considering the differences in the specifications of such equipment. For example, the regulation values ​​of sulfur oxides (SOx) and nitrogen oxides (NOx) of a boiler, which is one of the equipment of the plant, differ depending on the specifications. Accordingly, some boilers have denitration equipment and desulfurization equipment, while others do not. In addition, the required temperature and pressure may differ depending on the boiler. The inventors of the present application have focused on this point and came up with the idea of ​​creating guide information that reflects the unique circumstances of the plant, such as differences in the specifications of the equipment of the plant, by making it possible to add guide information rather than fixing the guide information.

[0086] Furthermore, by focusing on information that has been created and accumulated for different purposes, such as operation logs, the system is configured to access information on the actual operating status of the plant and display it simultaneously when adding guide information. This reduces the burden of creating guide information and enables even inexperienced operators to easily add new guide information that takes into account the unique circumstances of the plant.

[0087] Furthermore, rather than simply displaying information about the actual operating status of the plant, the system is configured to narrow down information of high importance and allow operators or other guide creators to view it, further reducing the burden of creating guide information.

[0088] In addition, the present invention can be modified in various ways without departing from the gist of the invention. For example, a machine learning method may be used to extract important words and calculate their importance. In this case, training data may be created that is rewarded for actually being added to the additional guide information. In addition, the identification information of the driver who created the driving log may be used as one factor. Machine learning models include those that use neural networks such as convolutional neural networks (CNN), those that use regression models such as Gaussian process regression, and those that use tree algorithms such as decision trees. When collecting information for machine learning, the edge / cloud computing unit 32 may also be used. In addition, some components in one embodiment may be added to other embodiments within the scope of the normal creative ability of a person skilled in the art. Also, some components in one embodiment may be replaced with corresponding components in other embodiments. [Explanation of symbols]

[0089] 1. Plant 2a Fuel supply port 2b Gas outlet 2c Air supply line 2d outlet 3. Cyclone 3a Exhaust gas flow path 4. Recycling pipe 4a Loop seal part 5 Rear flue 6 Furnace wall tube 7. Pump 30 Driving Assistance Systems 30D Communication Department 30E Input section 30F display section 32 Cloud Computing Department 40 Monitoring equipment 42 Alarm display control section 42A Process data acquisition unit 42B Alarm judgment section 42C Alarm information display section 42D Standard guide setting section 42E Key Word Extraction Unit 42F Guide Additional Settings 44 Storage section 50 Display device 100 Turbine 102 Condenser

Claims

1. A display device having a display screen, guide information to be displayed when a warning regarding the operating status of the plant is issued is displayed in a first area of ​​the display screen, and at the same time, an area for adding the guide information is displayed in a second area of ​​the display screen, and at the same time, at least one word that is included in information describing the past operating status of the plant and has a high degree of importance with respect to the warning is displayed in a different area of ​​the display screen, The words are extracted based on the importance of at least one of the words, which is calculated based on the feature amount of the words. Display device.

2. The second area for adding the guide information is configured to be displayed in juxtaposition to the first area on the display screen. The display device according to claim 1 .

3. configured to display, on the display screen, the information describing the past operating conditions of the plant, including the selected word; The display device according to claim 1 .

4. The word is calculating a feature amount of at least one of the words based on information describing a past operating state of the plant; calculating the importance of at least one of the words based on the feature amount of the word; configured to display the words together with the importance of the words on the display screen. The display device according to claim 3 .

5. displaying guide information to be displayed when a warning regarding the operating status of the plant is issued in a first area of ​​a display screen of a display device, simultaneously displaying an area for adding the guide information in a second area of ​​the display screen, and simultaneously displaying at least one word that is included in information describing the past operating status of the plant and has a high degree of importance with respect to the warning in a different area of ​​the display screen, The words are extracted based on the importance of at least one of the words, which is calculated based on the feature amount of the words. Display method.

6. A control device for controlling a display device having a display screen, guide information to be displayed when a warning regarding the operating status of the plant is issued is displayed in a first area of ​​the display screen, and at the same time, an area for adding the guide information is displayed in a second area of ​​the display screen, and at the same time, at least one word that is included in information describing the past operating status of the plant and has a high degree of importance with respect to the warning is displayed in a different area of ​​the display screen, The words are extracted based on the importance of at least one of the words, which is calculated based on the feature amount of the words. Control device.

7. A computer for controlling a display device having a display screen, a computer program for executing a step of displaying, in a first area of ​​the display screen, guide information to be displayed when a warning regarding an operating status of a plant is generated, and simultaneously displaying, in a second area of ​​the display screen, an area for adding the guide information; and simultaneously displaying, in a different area of ​​the display screen, at least one word that is included in information describing a past operating status of the plant and has a high degree of importance with respect to the warning, The words are extracted based on at least one importance of the words, which is calculated based on the feature amount of the words. Computer program.

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