TW202215181A - Display device, control device, control method, and computer program - Google Patents

Abstract

The present invention makes it possible to recognize the past trend of generation of alarms. Provided is a display device for displaying an operation status of a plant, that displays statistical information of alarms generated in the plant in association with alarm types.

Description

Display device, control device, control method and computer program

The present invention relates to a display device, a control device, a control method and a computer program for displaying information related to an alarm occurring in a plant. This application claims priority based on Japanese Patent Application No. 2020-166776 filed on October 1, 2020. The entire contents of the Japanese application are incorporated herein by reference.

During the operation of the equipment, various kinds of alarms occur several times. Patent Document 1 discloses that a large number of alarms are generated during equipment monitoring. [Prior Art Literature]

[Patent Document 1] Japanese Patent Laid-Open No. 2008-46925

[Problems to be Solved by Invention]

There are alarms that do not require action even in the event of an alarm due to their low urgency or importance. Therefore, when an alarm occurs, the operator of the device judges whether or not some action should be taken in response to the alarm. In order to judge the necessity of taking measures against an alarm, it may be effective to grasp the past occurrence tendency of the alarm.

One exemplary object of one aspect of the present invention is to provide a display device, a control device, and a control method that can easily grasp the past occurrence tendency of an alarm. [Technical means to solve problems]

In order to solve the above-mentioned problems, a display device according to one aspect of the present invention is a display device for displaying the operating state of a device, and the display device displays statistical information of alarms generated in the device in correspondence with the types of the alarms.

The aforementioned statistical information may include information on a change tendency within a predetermined period.

The change tendency may include the change tendency of the average number of occurrences of the alarms in the first period and the second period.

The change tendency may include a change tendency of the standard deviation of the number of occurrences of the alarms in the first period and the second period.

The change tendency may include the change tendency of the maximum value of the number of occurrences of the alarms per day in the first period and the second period.

The aforementioned statistical information may include information on the number of days elapsed since the first or last occurrence of the alarm.

The aforementioned statistical information may include information on the number of days that have elapsed since the day when the number of daily alerts was maximized.

The display device may display the importance or urgency of the measures for the alarms judged based on the average number of occurrences of the alarms within a predetermined period and the number of days when the alarms occurred within the predetermined period.

A control device according to one aspect of the present invention is a control device for a display device that controls an operating state of a display device, and includes an acquisition unit that acquires information on an alarm that occurs in the device, and a calculation unit that acquires information from the acquisition unit based on the The information of the above-mentioned alarms is calculated according to each type of the above-mentioned alarms. The statistical information related to the occurrence of the above-mentioned alarms is calculated; and the display control unit is displayed on the above-mentioned display device so that the calculated above-mentioned statistical information and the types of the above-mentioned alarms are associated with each other.

The control device may include a receiving unit for receiving the selection of the period, and the display control unit may display the statistical information in the selected period and the type of the alarm in a corresponding relationship to the display device.

A control method of one aspect of the present invention is a control method of a display device for controlling the operation state of a display device, which includes the steps of: acquiring information on an alarm that occurs in the device; The step of calculating statistical information related to the occurrence of the alarm for each type of the alarm; and the step of displaying the calculated statistical information on the display device in a corresponding relationship with the type of the alarm.

The control method may include a step of receiving a period selection, and the display step may include a step of establishing a corresponding relationship between the statistical information in the selected period and the type of the alarm to be displayed on the display device.

A program of one aspect of the present invention is a program for causing a computer to execute a control method of a display device for controlling the operation state of a display device, the control method comprising: the step of acquiring information on an alarm that occurs in the device; The step of calculating statistical information related to the occurrence of the above-mentioned alarm according to the information obtained by the above-mentioned obtaining section according to each type of the above-mentioned alarm; step.

In addition, any combination of the above constituent elements or the constituent elements of the present invention, or those expressed in methods, apparatuses, systems, computer programs, data structures, recording media, etc., are also effective as aspects of the present invention. [Effect of invention]

According to the present invention, it is possible to provide a display device, a control device, and a control method capable of grasping the past occurrence tendency of an alarm.

Hereinafter, the present invention will be described with reference to the drawings and embodiments of the invention, but the following embodiments do not limit the invention within the scope of the invention, and all combinations of the features described in the embodiments are not necessarily necessary to solve the invention. of. The same or equivalent constituent elements, members, and processes shown in the respective drawings are assigned the same symbols, and repeated explanations are appropriately omitted.

[Description of equipment] FIG. 1 is a schematic diagram showing the overall structure of the apparatus of the present embodiment. First, with reference to FIG. 1, the structure of the apparatus 1 which is the object in this embodiment is demonstrated. The facility 1 is, for example, a power generation facility (incineration facility) including a circulating fluidized bed boiler, and is provided with a boiler that generates steam by burning fuel while circulating a circulating material such as silica sand flowing at a high temperature. As the fuel of the equipment 1, in addition to fossil fuels such as coal, for example, non-fossil fuels (woody biomass, waste tires, waste plastics, sludge, etc.) can be used. The steam produced in the plant 1 is used to drive the turbine 100 . In addition, the equipment targeted in this embodiment is not limited to power generation equipment including boilers or incineration equipment, as long as it is equipment that can obtain process data, such as chemical equipment, wastewater treatment equipment, and the like.

The equipment 1 is configured to burn the fuel in the furnace 2, separate the circulating material from the exhaust gas by the cyclone 3 functioning as a solid-gas separation device, and return the separated circulating material to the furnace 2 for circulation. The separated circulating material is sent back to the lower part of the furnace 2 through the circulating material recovery pipe 4 connected below the cyclone 3 . In addition, the lower part of the circulating material recovery pipe 4 and the lower part of the furnace chamber 2 are connected via the annular sealing part 4a whose flow path is narrowed. Thereby, a predetermined amount of circulating material is stored in the lower part 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 through the exhaust gas flow path 3a.

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

In the furnace chamber 2, solid matter including the fuel supplied from the fuel supply port 2a is made to flow by the combustion/flow air introduced from the lower air supply line 2c, and the fuel is burned at, for example, about 800 to 900°C while flowing. . The combustion gas generated in the furnace chamber 2 is introduced into the cyclone 3 together with the circulating material. The cyclone 3 separates the circulating material and the gas by centrifugal separation, so that the separated circulating material is returned to the furnace 2 through the circulating material recovery pipe 4, and the combustion gas from which the circulating material has been removed is sent to the rear smoke from the exhaust gas flow path 3a. Route 5 sent out.

In the furnace chamber 2, a part of the circulating material called the bed material stays at the bottom. The bed material sometimes contains bed material with coarse particle size or inclusions of exhaust gas that are not suitable for circulating flow, and sometimes poor flow occurs due to the bed material that is not suitable for circulating flow. Therefore, in order to suppress poor flow, in the furnace 2, the bed material in the furnace is continuously or intermittently discharged to the outside from the discharge port 2d at the bottom. The discharged bed material is supplied to the furnace 2 again or is directly discarded after removing undesired substances such as metals and coarse particles on a circulation line (not shown). The circulating material of the furnace chamber 2 circulates in the circulation system composed of the furnace chamber 2 , the cyclone 3 and the circulating material recovery pipe 4 .

The rear flue 5 has a flow path through which the gas discharged from the cyclone 3 flows to the rear stage. The rear flue 5 has a superheater 10 for generating superheated steam and an economizer 12 for preheating boiler water as a heat exhaust recovery part for recovering the heat of the exhaust gas. The exhaust gas flowing through the rear flue 5 is cooled by heat exchange with steam or boiler water flowing through the superheater 10 and the economizer 12 . Furthermore, there is a steam drum 8 for storing boiler water that has passed through the economizer 12 , and the steam drum 8 is also connected to the furnace wall tube 6 .

The economizer 12 transfers the heat of the exhaust gas to the boiler water to preheat the boiler water. The economizer 12 is connected to the pump 7 via the pipe 21 , and is connected to the steam drum 8 via the pipe 22 . The boiler water system supplied from the pump 7 to the economizer 12 via the pipe 21 and preheated by the economizer 12 is supplied to the steam drum 8 via the pipe 22 .

The steam drum 8 is connected with a dewatering pipe 8a and a furnace wall pipe 6 . The boiler water system in the steam drum 8 descends in the downpipe 8 a, is introduced into the furnace wall tube 6 on the lower side of the furnace 2, and flows toward the steam drum 8. As shown in FIG. The boiler water system in the furnace wall tube 6 is heated by the combustion heat generated in the furnace chamber 2, and evaporates in the steam drum 8 to become steam.

The steam drum 8 is connected to a saturated steam pipe 8b for discharging the steam inside. The saturated steam pipe 8b connects the steam drum 8 and the superheater 10 . The steam in the steam drum 8 is supplied to the superheater 10 via the saturated steam pipe 8b. The superheater 10 generates superheated steam by superheating the steam using the heat of the exhaust gas. The superheated steam is supplied to the turbine 100 outside the facility 1 through the pipe 10a, and is used for power generation.

The pressure and temperature of the steam exiting the turbine 100 are lower than the pressure and temperature of the steam exiting 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.

A condenser 102 is provided downstream of the turbine 100 . The steam discharged from the turbine 100 is supplied to the condenser 102 , and is condensed in the condenser 102 to return to saturated water, and then supplied to the pump 7 . A generator is connected to the turbine 100 for converting kinetic energy obtained by the rotation of the turbine 100 into electrical energy.

The pump 7a supplies makeup water to keep the water level of the condenser 102 constant. In FIG. 1, the makeup water flow rate u1 (an example of "process data") replenished by the pump 7a is shown.

The process data (data related to the operation of the device 1) handled in this embodiment may be any data related to the device 1, for example, data ("process data") that measure the state of the device 1 by a sensor. An example), more specifically, may include measured values of temperature, pressure, flow rate, etc. of the equipment 1 . FIG. 1 shows the boiler water flow rate u2 (an example of “process data”) supplied from the pump 7 to the economizer 12 . 1 shows the boiler outlet steam flow u3 (an example of “process data”) supplied from the superheater 10 to the turbine 100, and the saturated steam flow u4 supplied from the steam drum 8 to the superheater 10 ( An example of "process data"). In addition, the makeup water flow rate u1 may be controlled to follow the saturated steam flow rate u4. Also, the boiler water flow rate u2 may be controlled to follow adjustment 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 .

When a hole is formed in the pipe system constituting the facility 1, the make-up water flow rate u1 increases or the flow rate difference between the boiler water flow rate u2 and the boiler outlet steam flow rate u3 increases. DCS (Distributed Control System: Distributed Control System, Fig. 2) 20 receives the process data of equipment 1, such as make-up water flow u1, boiler water flow u2, boiler outlet steam flow u3 and saturated steam flow u4 from equipment 1, and monitors the flow of equipment 1. The operation status is monitored to monitor whether an abnormality occurs in the equipment 1. As will be described later, the monitoring device 40 ( FIG. 2 ) evaluates process data based on an alarm determination logic set for each type of abnormality, and issues an alarm when an abnormality occurs.

In addition, as process data, the makeup water flow rate u1, the boiler water flow rate u2, the boiler outlet steam flow rate u3, and the saturated steam flow rate u4 are exemplified, but the process data related to the equipment 1 may be other data. The process data related to the equipment 1 may be other data such as temperature and pressure, or data calculated based on a plurality of process data, or may be data obtained from sensors and the like without calculation processing.

Next, the system 30 of the present embodiment will be described with reference to FIGS. 2 and 3 . FIG. 2 is a block diagram showing the structure of the system 30 of the present embodiment. FIG. 3 is a diagram showing the physical structure of the system 30 of the present embodiment.

DCS20 is a distributed control system for controlling equipment 1. As shown in Figure 2, it obtains process data from sensors installed in equipment 1, etc., and supplies control signals for controlling equipment 1 based on the process data to the equipment. 1.

The system 30 includes a display device 32 and a monitoring device 40 . The monitoring device 40 includes a control unit 31 and a memory unit 33 . The control unit 31 includes, for example, an acquisition unit 311 , a statistic calculation unit 312 , a reception unit 313 , a display control unit 314 , and an alarm determination unit 315 as functional structures. The memory unit 33 stores various data, for example, the alarm information DB 33A and the alarm statistics information DB 33B.

The acquisition unit 311 acquires the process data from, for example, the DCS 20 . The acquisition unit 311 sequentially acquires process data from the DCS 20 during the operation of the facility 1 . In addition, as long as at least a part of the equipment 1 operates, it is "in operation". In addition, the operation period of the facility 1 is a period during which at least a part of the operation period is in operation, and is a period other than a previously planned stop period such as maintenance.

The alarm determination unit 315 determines whether or not an abnormality of the device 1 has occurred or the like based on the process data acquired by the acquisition unit 311 , thereby determining that an abnormality has occurred. Specifically, the alarm determination unit 315 evaluates the process data according to the alarm determination logic set in advance. The alarm determination unit 315 determines that an abnormality has occurred, for example, when some values included in the process data exceed a predetermined threshold value or when a predetermined trend changes, according to the alarm determination logic. For example, the alarm determination unit 315 can evaluate the predetermined process data according to the alarm determination logic, and determine whether or not a burst has occurred (such as a boiler tube leak, in which metal materials such as furnace tubes and pipes constituting the boiler are damaged and broken, and the internal The state in which the steam leaks to the outside. Including the state where there is a high possibility of explosion in the future. The same below) and other abnormalities that may occur in the device 1.

When it is determined that an abnormality has occurred, the alarm determination unit 315 outputs alarm information (hereinafter, also referred to as “alarm information”) related to the process data to the statistics calculation unit 312 and the display control unit 314 . The alarm information is information about an abnormal alarm (warning) that has occurred, and includes, for example, the alarm item (type of alarm), the date and time of the alarm occurrence, and the value of the process data related to the alarm (for example, the make-up water flow rate u1 determined to be abnormal) , the value of boiler water flow u2, etc.).

The statistic calculation part 312 calculates the statistic information about the occurrence of an alarm for each type of an alarm based on the alarm information (and the alarm information acquired from the alarm determination part 315) stored in the alarm information DB 33A. The statistical information calculated by the statistical calculation unit 312 includes arbitrary statistical information related to an abnormality occurring in the device 1 . The statistical information about the occurrence of an alarm may be, for example, information on the occurrence tendency of the alarm based on the total of the occurrence history of the alarm. The statistical information may include, for example, at least any of the average value of the number of daily alarm occurrences, the standard deviation of the daily number of alarm occurrences, or the maximum value of the daily number of alarm occurrences. The above statistical values are not limited to daily values, but may also be values within every other period (eg, 1 week, 1 month, or 1 year). In addition, the statistical information may also include, for example, information on the change tendency of the above-mentioned statistical information in different periods.

The statistics calculation unit 312, for example, calculates the statistical information related to the alarms generated in the device 1 for each type of alarms at an arbitrary time set in advance (for example, the time when the alarm occurred, daily, weekly, monthly, etc.). . The types of alarms for calculating statistical information can be classified by any method. The types of alarms can be classified according to, for example, various sensors for measuring the state of the device 1 . In this case, the types of alarms may include, for example, alarms related to make-up water flow, alarms related to boiler water flow, alarms related to boiler outlet steam flow, and alarms related to saturated steam flow.

A specific example of the statistical information will be described with reference to FIG. 4 . A specific example of statistical information that can be calculated by the statistical calculation unit 312 is shown in FIG. 4 . Each statistical information can be calculated for each type of alarm. In detail, FIG. 4 shows the statistical information calculated respectively for a plurality of different periods. As a plurality of different periods, for example, a short term (the last one week), a medium term (the last 1.5 months), and a long term (the past one year) are shown. Also, a plurality of statistical information calculated in each period is shown. The average [times/day], the standard deviation [times/day], the maximum [times/day], and the transmission day rate [%] are shown as the plural kinds of statistical information. The meaning shown by each statistical information is described in FIG. 4 .

Moreover, in FIG. 4, the information of the change tendency of a predetermined period (for example, a short-term and a mid-term) is shown as statistical information. The trend of change refers to the trend of changes in statistical information within a certain period (the first period) and another period (the second period). The change tendency includes, for example, the change tendency of the average number of alarms in the first period and the second period. FIG. 4 shows, for example, a value obtained by subtracting the average [times/day] of the past one year from the average [times/day] of the last week as a short-term change trend. Moreover, the value obtained by subtracting the average [time/day] of the past 1 year from the average [time/day] of the last 1.5 months is shown as the change tendency in the medium term.

In addition, although FIG. 4 shows the change tendency regarding the average occurrence number of an alarm, it is not limited to this. The statistical information that can be calculated by the statistical calculation unit 312 may include the change tendency of the standard deviation of the number of occurrences of alarms in the first period and the second period. The change tendency of the standard deviation can be calculated by substituting the average number of alarm occurrences when the change tendency of the average number of alarm occurrences in the first period and the second period is calculated with the standard deviation of the number of alarm occurrences.

In addition, the statistical information that can be calculated by the statistical calculation unit 312 may include a change tendency of the maximum value of the number of occurrences of alarms per day in the first period and the second period. The change tendency of the standard deviation can be calculated by substituting the average number of alarm occurrences at the time of calculating the change tendency of the average number of alarm occurrences in the first period and the second period with the maximum value of the number of alarm occurrences per day .

In FIG. 4 , the latest notification [days], the earliest notification [days], and the maximum notification [days] are further shown as statistical information related to the elapsed days regarding the occurrence of the alarm. The latest [days] is the number of days that have elapsed since the last alarm of the same type (latest date of alarm). For example, if the current date is January 20, 2020, and the latest day of occurrence of the targeted type of alarm is January 15, 2020, the latest [days] to be sent is 5.

The earliest notification [days] is the number of days that have elapsed since the first alarm of the same type (earliest date). For example, if the current date is January 20, 2020, and the earliest date of occurrence of the targeted type of alarm is January 14, 2020, the earliest notification [days] becomes 6.

The maximum notification [days] is the number of days that have elapsed since the day when the number of occurrences of the same type of alarms per day reached the maximum. For example, when the current date is January 20, 2020, and the day when the maximum number of occurrences of the targeted type of alarm is January 17, 2020, the maximum notification [days] is 3.

Return to the description of FIG. 2 . The receiving unit 313 receives input, instruction, selection, and the like of various information corresponding to the operator's operation. The receiving unit 313 receives, for example, an instruction to change the display screen, designation, input, and selection of a planned stop period, selection of a period during which an alarm occurs for calculating statistical information, and the like.

The display control unit 314 generates display data based on the acquired process data, alarm information, and various statistical information calculated from the alarm information, and displays a display screen based on the display data on the display device 32 . That is, the display control unit 314 controls the display of information related to the operating state of the equipment 1, such as displaying process data and statistical information of alarms on the display device 32, issuing alarms, and the like. An example of the screen displayed on the display device 32 will be described later.

The alarm information DB 33A stores the alarm information acquired from the alarm determination unit 315 . That is, the alarm information DB 33A stores alarm information (alarm history information) related to the alarms that have occurred so far. The alarm information includes, for example, an alarm item (type of alarm), an alarm occurrence date and time, and a value of process data related to the alarm (eg, the value of the make-up water flow rate u1 determined to be abnormal, the value of the boiler water flow rate u2, etc.).

The alarm statistical information DB 33B stores statistical information about the occurrence of alarms in the equipment calculated by the statistics calculation unit 312 . Examples of the statistical information are as described above.

The display device 32 displays various display screens including information related to the operation of the device 1 based on the display data supplied from the display control unit 314 . Various display screens displayed by the display device 32 will be described later.

As shown in FIG. 3 , the system 30 physically has a CPU (Central Processing Unit) 30a, a RAM (Random Access Memory) 30b, a ROM (Read only Memory) 30c, The communication unit 30d, the input unit 30e, and the display unit 30f are connected to each other via a bus bar so that data can be transmitted and received. The functional blocks of the system 30 shown in FIG. 2 are implemented by the physical structure shown in FIG. 3 .

In addition, in the present embodiment, the case where the system 30 is constituted by one computer has been described, but the system 30 may be realized by combining a plurality of computers. For example, in addition to the display portion 30f, a display constituting a different display portion for displaying other information may be provided. Also, the system 30 may be constituted by a tablet terminal. By configuring the system 30 with the tablet terminal, the system 30 can be carried around, and the system 30 can be used, for example, while patrolling the device 1 . In addition, the structure shown in FIG. 3 is only an example, and the system 30 may have structures other than these, and may not have some of these structures. Also, a part of the structure may be provided remotely. For example, the control part 31 which has CPU30a etc. may be installed in a remote place. In this case, the display device 32 including the display unit 30f and the like may be configured to acquire the control signal generated by the control unit 31 provided in the remote place via the network.

The CPU 30a is an arithmetic unit that performs control related to the execution of the programs stored in the RAM 30b or the ROM 30c, and arithmetic and processing of data. The CPU 30a is an arithmetic unit that executes a program (monitor program) for displaying graphs and descriptions of process data of the device 1 . The CPU 30a receives various data from the input unit 30e or the communication unit 30d, and displays the calculation result of the data on the display unit 30f or stores it in the RAM 30b.

The RAM 30b is capable of rewriting the data in the memory unit, and can be formed of, for example, a semiconductor memory element such as a DRAM or an SRAM. The RAM 30b can store data such as programs executed by the CPU 30a, process data of the device 1, and the like. In addition, these are examples, and the RAM 30b may store data other than these, or may not store a part of them.

The ROM 30c is capable of reading data in the memory unit, and can be formed of, for example, a semiconductor memory element such as a flash memory. The ROM 30c can store, for example, a computer program for executing various processes shown in this embodiment, and data that is not to be rewritten. The data not to be rewritten includes, for example, information about the device 1, the specifications of the components of the device 1, and the like. In addition, the ROM 30c can store, for example, process data of the device 1, information about an alarm that has occurred, and data such as a planned stop period.

The communication part 30d is an interface for connecting the system 30 to other machines. The communication unit 30d can be connected to a communication network such as the Internet.

The input unit 30e is an inputter that receives data corresponding to the operation performed by the operator, and may include, for example, a keyboard and a touch panel.

The display part 30f has a screen which visually displays the result of the calculation by the CPU30a, and can be comprised by LCD (Liquid Crystal Display: liquid crystal display), for example. The display unit 30f can display a graph or explanatory text of the process data. Moreover, the display part 30f may be provided so that one screen may be comprised by connecting several displays.

The computer program for executing various processes shown in this embodiment can be provided by being stored in a computer-readable storage medium such as the ROM 30c, or provided through a communication network connected by the communication unit 30d. In the system 30, various operations included in this embodiment are realized by the CPU 30a executing the monitoring program. In addition, these physical structures are examples, and do not necessarily need to be independent structures. For example, the system 30 may include an LSI (Large-Scale Integration) in which the CPU 30a is integrated with the RAM 30b or the ROM 30c.

In addition, the system 30 may be provided with a large-capacity memory device composed of an HDD (Hard Disk Drive) or the like independently of the structure shown in FIG. 3 . The data stored in the memory device is processed by the CPU 30a. Also, data of the result of processing by the CPU 30a are stored in the memory device.

FIG. 5 is a diagram showing an outline of transitions of various display screens displayed on the display device 32 in the present embodiment. As shown in FIG. 5 , the display device 32 displays a login display screen DP0, a statistical information display screen DP1, and an alarm map display screen DP2. The arrows between the respective display screens shown in FIG. 5 indicate the transition of the respective display screens according to the instruction from the operator. That is, in the system 30, the login display screen DP0 can be changed to the statistical information display screen DP1 and the alarm map display screen DP2 according to the instruction from the operator. In addition, when each display screen is changed in the system 30, the previous display screen may be replaced by the next display screen, or the next display screen may be displayed in a state where the previous display screen is retained. In addition, the above-mentioned display screen is only an example, and the display apparatus 32 may display the display screen other than these display screens. For example, a screen not shown in FIG. 5 (for example, a menu screen) may be converted before being converted to a screen shown in FIG. 5 , the statistical information display screen DP1 may have a plurality of screens, and the alarm map display screen DP2 may There are multiple screens.

The login display screen DP0 displays information required by the operator to log in to the system 30 . The information required for login is, for example, the user ID and password of the operator. The login display screen DP0 receives input of a user ID and a password from the operator. From the login display screen DP0, it is possible to transition to the statistical information display screen DP1, the alarm map display screen DP2, and the like.

The statistical information display screen DP1 is a screen which displays the statistical information of the alarm which has occurred in the apparatus 1 as the operating state of the apparatus. The statistical information displayed on the statistical information display screen DP1 is the statistical information calculated by the system calculation unit 312 . The statistical information of the alarms displayed on the statistical information display screen DP1 can be displayed in a form corresponding to the types of alarms that have occurred. The display of statistical information in a form corresponding to the type of the alarm that has occurred refers to the form of displaying the statistical information and the type of alarm in order to easily grasp the statistical information on the type of an alarm. For example, displaying the statistical information in a form corresponding to the type of the alarm that has occurred includes displaying the type of the alarm and the statistical information corresponding to the type of the alarm side by side.

The alarm map display screen DP2 is a screen displayed in order for the operator of the auxiliary device 1 to determine whether or not certain measures should be taken with respect to an alarm that has occurred. On the alarm map display screen DP2, for example, the importance or urgency of the measures for the alarm that has occurred is displayed. The importance or urgency of the measure can be judged based on, for example, the average number of alarms within a predetermined period and the number of days on which the alarms occurred within a predetermined period. A specific example of the alarm map display screen DP2 will be described later.

Next, an example of the statistical information display screen DP1 displayed on the display device 32 will be described with reference to FIG. 6 . The statistical information display screen DP1 shown in FIG. 6 includes a region R61 and a region R62.

The area R61 shows the information of the alarm occurred in the device 1 . The information of the alarm displayed in the area R61 includes the date and time of the alarm that occurred in the device 1 (occurrence date and time) and the item of the alarm that occurred (alarm item). The alarm item indicates the type of alarm that has occurred. In the example shown in FIG. 6, "alarm A", "alarm B", etc. are shown as an alarm item, for example. In addition, with respect to the alarm that has occurred, the occurrence date and time and the alarm item are displayed in correspondence with each other.

Region R62 shows various statistics of alarms occurring in device 1 . Statistics for this alert include the last 1 week, the last 1.5 months, and the last 1 year. The statistical information of the alert further includes statistical information of the trend of change and the number of elapsed days. The meaning represented by each statistical information has already been described with reference to FIG. 4 , and therefore, the description of the meaning represented by each statistical information is omitted here.

As described above, according to the present embodiment, the display device 32 displays the statistical information of the alarms generated in the facility 1 in correspondence with the types of alarms. As a result, the operator of the apparatus 1 can grasp the statistical information on the occurrence of the alarm for each type of the alarm so far. In addition, the operator can grasp the occurrence tendency of the alarm that has occurred this time (for example, whether it occurs frequently) based on the statistical information, and as a result, can judge the urgency or importance of measures for the alarm.

In addition, the statistical information displayed on the display device 32 includes information on the change tendency within a predetermined period (eg, short-term or mid-term). As a result, the operator of the device 1 can grasp the occurrence tendency of the alarm so far, can check it to determine whether the current alarm is different from the previous tendency, and can judge the urgency or importance of the measures for the alarm.

Next, an example of the alarm map display screen DP2 displayed on the display device 32 will be described with reference to FIG. 7 . FIG. 7 shows the average number of occurrences of alarms (average [times/day]) within a predetermined period (for example, one year) and the day on which the alarm occurred within a predetermined period (similarly, for example, one year). The alarm map of the relationship between the ratios (transmission day rate [%]) is displayed on the screen DP2 as an alarm map. For example, the transmission day rate [%] for one year (365 days) is calculated by the following formula. Reporting day rate [%]=[(Number of days when an alarm occurred in one year)/365]×100

The point a1 is a point on the alarm map that is plotted (mapped) at the corresponding position on the alarm map according to the average [times/day] and the reporting day rate [%] of the same type of alarms that have occurred.

In addition, the alarm map shown in FIG. 7 is divided into four areas of R61 to R64. R61 is an area with low average [times/day] and low delivery rate [%]. R62 is an area where the average [times/day] is low and the daily rate [%] is high. R63 is an area with high average [times/day] and high delivery rate [%]. R64 is an area with high average [times/day] and low daily reporting rate [%].

When an alarm that has occurred is plotted in the area R61, the alarm is not an alarm that has occurred frequently so far statistically, and may be an alarm that is different from usual, so it can be judged that the urgency or importance of the measures is high.

When an alarm that has occurred is plotted in the area R62, since the alarm has a high notification rate [%], it is considered that it occurs regularly, and therefore it can be judged that the urgency or importance of the measures is low.

When an alarm that occurs is plotted in the area R63, the average [times/day] of the alarm is high, but the daily reporting rate [%] is also high, so it is considered that it occurs regularly in peacetime, so it can be judged that the measures are urgent or low importance.

When an alarm that has occurred is plotted in the area R64, the alarm rate [%] is low, and the average [times/day] is high, so it may occur intensively in a specific period (for example, when the device 1 is activated). In this case, the alarm can be judged as the urgency or the lower importance of the measures.

Point a1 is shown in area R61. Therefore, according to the above, it is shown on the alarm map display screen DP2 that the alarm related to the point a1 is an alarm of high urgency or importance of measures. Similarly, according to the above, when the point corresponding to the alarm is displayed in the area R62, R63, or R64, the alarm map display screen DP2 shows that the urgency or importance of the measures for the alarm is low.

As described above, according to the present embodiment, the display device 32 displays the importance or urgency of the measures for the alarm judged based on the average number of alarm occurrences within the predetermined period and the number of days when the alarm occurred within the predetermined period. As a result, the operator of the apparatus 1 can easily judge whether or not measures should be taken for the abnormality related to the generated alarm. In addition, using the alarm map display screen DP2 shown in FIG. 7 , it is also possible to grasp the tendency of improvement or deterioration of the operating state based on the temporal change of the tendency of alarm occurrence. For example, by comparing the alarm map display screen DP2 on which alarms occurred in the last year are mapped and the alarm map display screen DP2 on which alarms occurred in the last week are mapped, it is possible to grasp the most recent The alarm map shows which area of the screen DP2 (in which area of the areas R61 to R64) the alarm increases or decreases within one week. By performing such an analysis, it is possible to perform macro and long-term equipment operation management or guide creation. In addition, by changing the highlight display method (for example, size) of the marker of the map according to the degree of influence of the alarm that has occurred, it is possible to easily grasp the degree of influence of the alarm that has occurred.

[display method] Next, the flow of processing performed by the system 30 of the present embodiment will be described with reference to the flowchart of FIG. 8 . In particular, the flow chart shows the flow of the process of displaying information related to an alarm occurring in the device 1 . This process is executed under the control of the control unit 31 . In addition, the content and order of the steps shown below are merely an example, and the operation processing is not limited to this.

First, during the operation of the facility 1, the acquisition unit 311 acquires the process data of the facility 1 from the DCS 20 (S11). The acquisition unit 311 can store the process data sequentially supplied from the DCS 20 in the memory unit 33 or the like. Then, the alarm determination part 315 evaluates the process data acquired in step S11 according to the alarm determination logic (S12), and determines whether or not an alarm has occurred based on the abnormality of the equipment 1 (S13). When it is determined by the alarm determination unit 315 that a predetermined abnormality has occurred in the device 1 and it is determined that an alarm needs to be issued (YES in step S13 ), the process proceeds to step S14 . In other cases (NO in step S13), the process shown in FIG. 8 is terminated.

In step S14, the statistical calculation part 312 calculates the statistical information about the alarm which occurred. The statistical information is calculated based on, for example, alarm information that has occurred in the past and alarm information about an abnormality determined to have occurred in step S13 . In addition, in order to calculate statistical information in step S14, it is not necessary to use the alarm information about the abnormality determined to have occurred in step S13. An example of the calculated statistical information and the calculation method of the statistical information have been described with reference to FIG. 4 and the like.

Next, the display control unit 314 controls the display device 32 to display alarm information about the abnormality determined to have occurred in step S13 and statistical information calculated in step S14 on the display device 32 ( S15 ). For example, the display control unit 314 controls the display device 32 to display the statistical information of the alarms generated in the facility 1 and the types of the alarms in correspondence with each other. An example of the statistical information displayed by the display device 32 is as described with reference to FIG. 6 and the like.

Next, the display control part 314 classifies the alarm regarding the abnormality determined in step S13 (S16), and controls so that the classification result of an alarm is displayed on the display device 32 (S17). For example, the importance or urgency of the measures against the alarm is judged based on the average number of occurrences of the alarm in a predetermined period and the number of days when the alarm occurred within the predetermined period, and the alarm is classified according to the judgment result. The classification result of the alarm corresponding to the importance or urgency of the measures is displayed on the display device 32 like the screen shown in FIG. 7 , for example.

As described above, according to the present embodiment, the display device 32 displays, for example, the statistical information of the alarms that have occurred in the facility 1 and the types of the alarms in association with each other. As a result, the past occurrence tendency of the alarm can be easily grasped.

As a modification of the processing shown in FIG. 8 , the system 30 may not perform the processing of steps S16 and S17, and the operator or the like may classify the alarm (judgment of the importance or urgency of the measure).

The embodiments described by the above-described embodiments can be used in combination or by adding changes or improvements as appropriate according to the application, and the present invention is not limited to the descriptions of the above-described embodiments. As is clear from the description of the scope of the present invention, such a combination or a modified or improved form can also be included in the technical scope of the present invention.

1: Equipment 2: Furnace 2a: Fuel supply port 2b: Gas outlet 2c: Air supply line 2d: discharge port 3: Cyclone 3a: Exhaust gas flow path 4: Recycling material recycling tube 4a: Ring seal 5: Rear flue 6: Furnace wall tube 7: Pump 7a: Pump 8: Steam drum 8a: Rainpipe 8b: saturated steam pipe 10: Superheater 10a: Tube 12: Economizer 13: Area 21: Tube 22: Tube 30: System 30a: CPU 30d: Communications Department 30e: Input section 30f: Display part 31: Control Department 32: Display device 100: Turbine 102: Condenser 311: Acquire Department 312: Statistical Computing Department 313: Receiving Department 314: Display Control Department 315: Alarm Judgment Department

FIG. 1 is a schematic diagram showing the overall structure of the facility of the present embodiment. Fig. 2 is a block diagram showing the structure of the system of the present embodiment. Fig. 3 is a diagram showing the physical structure of the system of the present embodiment. FIG. 4 is a diagram for explaining an example of statistical information of the present embodiment. FIG. 5 is a diagram showing transitions of various display screens in the present embodiment. Fig. 6 is a diagram showing an example of a statistical information display screen of the present embodiment. FIG. 7 is a diagram showing an example of an alarm map display screen according to the present embodiment. Fig. 8 is a flowchart showing an example of the operation processing of the present embodiment.

DP1: Statistics display screen

R61: Area

R62: Area

Claims (14)

A display device is used to display the operation status of equipment, The above-mentioned display device displays the statistical information of each type of alarms generated in the above-mentioned equipment in the form of establishing a corresponding relationship with the types of the above-mentioned alarms. The display device of claim 1, wherein, The aforementioned statistical information includes information on the tendency of change within a predetermined period. The display device of claim 2, wherein, The change tendency includes the change tendency of the average number of occurrences of the alarms in the first period and the second period. The display device of claim 2, wherein, The change tendency includes the change tendency of the standard deviation of the number of occurrences of the alarms in the first period and the second period. The display device of claim 2, wherein, The change tendency includes the change tendency of the maximum value of the number of occurrences of the alarms per day in the first period and the second period. The display device according to any one of claim 1 to claim 5, wherein, The aforementioned statistical information includes information on the number of days elapsed since the first or last occurrence of the alert. The display device according to any one of claim 1 to claim 5, wherein, The aforementioned statistical information includes information on the number of days elapsed from the day when the number of alarm occurrences per day of the alarm is the largest. The display device according to any one of claim 1 to claim 5, wherein, The display device displays the importance or urgency of the measures for the alarm determined based on the average number of occurrences of the alarm within the predetermined period and the number of days on which the alarm occurred within the predetermined period. A control device, which is a display device for controlling the operation state of a display device, the aforementioned control device is provided with: Obtaining department to obtain alarm information related to the alarms occurring in the aforementioned equipment; a calculation unit that calculates statistical information related to the occurrence of the alarm for each type of the alarm based on the alarm information acquired by the acquisition unit; and The display control unit causes the calculated statistical information to be displayed on the display device in a corresponding relationship with the type of the alarm. The control device of claim 9, wherein, The aforementioned control device includes a receiving unit for selecting a receiving period, The display control unit establishes a corresponding relationship between the statistical information in the selected period and the type of the alarm and displays it on the display device. A control method is a display device for controlling the operation state of a display device, and the aforementioned control method includes: Steps to obtain alarm information related to alarms occurring in the aforementioned equipment; Steps of calculating statistical information related to the occurrence of the aforesaid alarm according to each type of the aforesaid alarm according to the obtained aforesaid alarm information; and The step of establishing a corresponding relationship between the calculated statistical information and the type of the alarm and displaying it on the display device. The control method according to claim 11, wherein, The aforementioned control method includes the step of selection during reception, The display step includes the step of establishing a corresponding relationship between the statistical information in the selected period and the type of the alarm so as to be displayed on the display device. A program for causing a computer to execute a control method of a display device for controlling the operating state of a display device, The aforementioned control methods include: Steps to obtain alarm information related to alarms occurring in the aforementioned equipment; Steps of calculating statistical information related to the occurrence of the aforesaid alarm according to each type of the aforesaid alarm according to the obtained aforesaid alarm information; and The step of establishing a corresponding relationship between the calculated statistical information and the type of the alarm and displaying it on the display device. The program of claim 13, wherein, The aforementioned program includes the step of selection during reception, The display step includes the step of establishing a corresponding relationship between the statistical information in the selected period and the type of the alarm so as to be displayed on the display device.

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