TWI826835B - Display device, control device, control method and computer program - Google Patents

Abstract

[Issue] It is possible to grasp the past occurrence tendency of alarms. [Solution] The display device is a display device that displays the operating status of the equipment, and displays statistical information of alarms generated in the equipment in association with the types of alarms.

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 this Japanese application are incorporated into this specification by reference.

Various alarms occur multiple times during the operation of the equipment. Patent Document 1 discloses that a large number of alarms are generated during equipment monitoring. [Prior technical literature]

[Patent document 1] Japanese Patent Application Publication No. 2008-46925

[Problem to be solved by the invention]

Some of the alarms are of low urgency or importance and do not require action even if an alarm occurs. Therefore, when an alarm occurs, the operator of the equipment determines whether certain measures should be taken in response to the alarm. In order to determine whether measures against alarms are necessary, it is sometimes effective to grasp the past occurrence tendency of alarms.

One of the illustrative objects of a certain 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 alarms. [Technical means to solve problems]

In order to solve the above problem, a display device according to one aspect of the present invention is a display device that displays the operating status of equipment. The display device displays statistical information of alarms generated in the equipment in association with types of alarms.

The aforementioned statistical information may include information on change trends within a given period.

The said changing tendency may include the changing tendency of the average number of occurrences of the said 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 a change tendency of the maximum 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 that have passed since the initial or last alert occurred.

The aforementioned statistical information may include information on the number of days that have passed since the day when the maximum number of alarms was sent each day.

The display device may display the significance or urgency of the measures to determine the alarm based on the average number of alarm occurrences within the predetermined period and the number of days on which the alarm occurred within the predetermined period.

A control device according to a certain aspect of the present invention is a control device for controlling a display device that displays the operating status of a display device. The control device includes: an acquisition unit that acquires information on an alarm that occurs in the device; and a calculation unit that obtains the information based on the acquisition unit. The information calculates statistical information related to the occurrence of the alarm according to each type of the alarm; and the display control unit establishes a corresponding relationship between the calculated statistical information and the type of the alarm and displays it on the display device.

The control device may include a receiving unit that receives selection of a period, and the display control unit may associate the statistical information within the selected period with the type of the alarm and display it on the display device.

A control method of a certain aspect of the present invention is a control method of a display device that controls the operating status of the display device, and includes the steps of: acquiring information about an alarm generated in the device; and based on the information acquired by the acquisition unit, The steps of calculating statistical information related to the occurrence of the alarm for each type of the alarm; and the steps 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 may include the step of receiving the selection of a period, and the displaying step may include the step of establishing a corresponding relationship between the statistical information in the selected period and the type of the alarm and displaying it on the display device.

A program of a certain aspect of the present invention is a program for causing a computer to execute a control method for a display device that controls the operating status of the display device. The control method includes: the step of obtaining 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 based on the information obtained by the acquisition unit; and correlating the calculated statistical information with the type of the alarm and displaying it on the display device steps.

In addition, any combination of the above constituent elements or the interchange of the constituent elements of the present invention or expressions in methods, devices, systems, computer programs, data structures, recording media, etc. are also effective as aspects of the present invention. [Effects of the 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 alarms.

Hereinafter, the present invention will be described through embodiments of the invention with reference to the drawings. However, the following embodiments do not limit the scope of the invention, and all combinations of features described in the embodiments are not necessarily necessary to solve the problem of the invention. of. The same or equivalent components, components, and processes shown in each drawing are labeled with the same symbols, and repeated descriptions are appropriately omitted.

[description of equipment] FIG. 1 is a schematic diagram showing the overall structure of the equipment of this embodiment. First, the structure of the device 1 targeted in this embodiment will be described using FIG. 1 . The equipment 1 is, for example, a power generation equipment (incineration equipment) including a circulating fluidized bed (Circulating Fluidized Bed type) boiler, which has a boiler that burns fuel to generate steam while circulating circulating materials such as silica sand that flow at high temperatures. As the fuel of the equipment 1, in addition to fossil fuels such as coal, non-fossil fuels (woody biomass, waste tires, waste plastics, sludge, etc.) can also be used. The steam generated in the device 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 capable of acquiring process data, such as chemical equipment, wastewater treatment equipment, etc.

The equipment 1 is configured to burn fuel in the furnace 2, separate circulating materials from exhaust gas using a cyclone 3 functioning as a solid-gas separation device, and return the separated circulating materials to the furnace 2 for circulation. The separated recycled materials are returned to the lower part of the furnace 2 through the recycled 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 2 are connected via an annular sealing part 4a in which the flow path is narrowed. Thereby, a predetermined amount of recycled material is stored in the lower part of the recycled 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 combustion. A fuel supply port 2a for supplying fuel is provided in the middle part of the furnace 2, and a gas outlet 2b for discharging combustion gas is provided at the upper part of the furnace 2. The fuel supplied to the furnace 2 from a fuel supply device (not shown) is supplied into the furnace 2 via 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 2. The boiler water flowing through the furnace wall tubes 6 is heated by combustion in the furnace 2 .

In the furnace 2, the solid matter including the fuel supplied from the fuel supply port 2a is caused 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 2 is introduced into the cyclone 3 together with the circulating material. The cyclone 3 separates the circulating material and the gas through centrifugal separation, returns the separated circulating material to the furnace 2 through the circulating material recovery pipe 4, and moves the combustion gas with the circulating material removed from the exhaust gas flow path 3a to the rear smoke Channel 5 is sent.

In the furnace 2, a portion of the circulating material, called the bed material, rests at the bottom. The bed material sometimes contains bed material with a coarse particle size or exhaust inclusions that are not suitable for circulating flow, and sometimes poor flow occurs due to these bed materials that are not suitable as circulating materials. Therefore, in order to suppress flow failure, 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 removed from undesirable materials such as metal and coarse particles in a circulation line (not shown), and then is supplied to the furnace 2 again or is directly discarded. The recycled material in the furnace 2 circulates in the circulation system composed of the furnace 2, the cyclone 3 and the recycled material recovery pipe 4.

The rear flue 5 has a flow path for allowing the gas discharged from the cyclone 3 to flow to the rear section. The rear flue 5 has a superheater 10 that generates superheated steam and an economizer 12 that preheats boiler water as an exhaust heat recovery unit that recovers the heat of the exhaust gas. The exhaust gas flowing through the rear flue 5 is cooled by heat exchange with the steam or boiler water flowing in 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 pipe 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 a pipe 21 and connected to the steam drum 8 via a pipe 22 . The boiler water 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 to a downwater pipe 8a and a furnace wall pipe 6. The boiler water system in the steam drum 8 descends in the downwater pipe 8 a, is introduced into the furnace wall tube 6 at the lower side of the furnace 2, and flows toward the steam drum 8. The boiler water in the furnace wall tube 6 is heated by the combustion heat generated in the furnace 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 internal steam. 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 uses the heat of the exhaust gas to superheat steam to generate superheated steam. The superheated steam is supplied to the turbine 100 outside the facility 1 through the pipe 10a, and is used to generate electricity.

The pressure and temperature of the steam discharged from the turbine 100 are lower than those of the steam discharged from the superheater 10 . Although not particularly limited, the pressure of the steam supplied to the turbine 100 is approximately 10 to 17 MPa, and the temperature is approximately 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 , is condensed in the condenser 102 , returns to saturated water, and then supplied to the pump 7 . The turbine 100 is connected to a generator that converts 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 supply water flow rate u1 supplemented by the pump 7a is shown (an example of "process data").

The process data (data related to the operation of the equipment 1) processed in this embodiment may be any data related to the equipment 1. For example, it may be data that measured the status of the equipment 1 with a sensor ("process data"). (an example), more specifically, it may include measured values of temperature, pressure, flow rate, etc. of the equipment 1 . FIG. 1 shows the boiler water flow rate u2 supplied from the pump 7 to the economizer 12 (an example of "process data"). In addition, FIG. 1 shows the boiler outlet steam flow rate u3 supplied from the superheater 10 to the turbine 100 (an example of "process data"), and shows the saturated steam flow rate u4 supplied from the steam drum 8 to the superheater 10 ( an example of "process information"). In addition, the makeup water flow rate u1 can be controlled to follow the saturated steam flow rate u4. Alternatively, the boiler water flow rate u2 may be controlled to follow the adjustment while monitoring both the boiler outlet steam flow rate u3 (or superheated steam flow rate) and the liquid level of the steam drum 8 .

When a hole occurs in the pipe system constituting the equipment 1, the feed 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, Figure 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 equipment 1 Operation status, thereby monitoring whether equipment 1 has any abnormalities. As will be described later, the monitoring device 40 (Fig. 2) evaluates process data based on alarm judgment logic set for each type of abnormality, and issues an alarm when an abnormality occurs.

In addition, as the process data, the feed 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 also be other data. The process data related to equipment 1 can be other data such as temperature and pressure, or data calculated based on multiple process data, or can be data obtained from sensors, etc. without calculation and processing.

Next, the system 30 of this embodiment will be described using FIGS. 2 and 3 . FIG. 2 is a block diagram showing the structure of the system 30 of this embodiment. FIG. 3 is a diagram showing the physical structure of the system 30 of this embodiment.

DCS20 is a distributed control system used to control equipment 1. As shown in Figure 2, it obtains process data from sensors installed on equipment 1 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 statistical 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, such as alarm information DB33A and alarm statistical information DB33B.

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

The alarm determination unit 315 determines whether or not an abnormality has occurred in the equipment 1 based on the process data acquired by the acquisition unit 311, and thereby determines that an abnormality has occurred. Specifically, the alarm judgment unit 315 evaluates the process data according to the alarm judgment logic set in advance. The alarm determination unit 315 determines that an abnormality has occurred based on the alarm determination logic, for example, when certain values included in the process data exceed a predetermined threshold or when the tendency changes in a predetermined manner. For example, the alarm determination unit 315 can evaluate the predetermined process data based on the alarm determination logic and determine whether a burst has occurred (such as a boiler tube leakage, in which metal materials such as furnace tubes and pipes constituting the boiler are damaged and punctured, causing internal damage. A state in which steam leaks to the outside. Including a state in which there is a high possibility of explosion in the future. The same applies to the following) and other abnormalities that may occur in equipment 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”) regarding the process data to the statistical calculation unit 312 and the display control unit 314. Alarm information refers to information about an abnormal alarm (warning) that has occurred, including, for example, the alarm item (type of alarm), the alarm occurrence date and time, and the value of the process data related to the alarm (for example, the supply water flow rate u1 determined to be abnormal , the value of boiler water flow u2, etc.).

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

The statistical calculation unit 312 calculates statistical information about the alarms generated in the device 1 for each type of alarm, for example, within an arbitrary time set in advance (for example, the time when the alarm occurs, every day, every week, every month, etc.) . The types of alerts used to calculate statistics can be classified using any method. The types of alarms may be classified, for example, according to various sensors used to measure the status 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, alarms related to saturated steam flow, and the like.

A specific example of 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 . Individual statistics can be calculated for each type of alarm. Specifically, FIG. 4 shows statistical information calculated for a plurality of different periods. Examples of different plural periods include short-term (last week), medium-term (last 1.5 months), and long-term (last year). Also, multiple types of statistical information calculated for each period are shown. As this plural type of statistical information, average [times/day], standard deviation [times/day], maximum [times/day], and daily transmission rate [%] are shown. The meaning of each statistical information is shown in Figure 4.

In addition, FIG. 4 shows information on change trends in a predetermined period (for example, short-term and medium-term) as statistical information. The trend of change is the trend of changes in statistical information within a certain period (first period) and another period (second period). The changing trend includes, for example, a changing trend in the average number of occurrences of alarms in the first period and the second period. For example, FIG. 4 shows a value obtained by subtracting the average [times/day] of the past year from the average [times/day] of the last week as a short-term change trend. Furthermore, the mid-term change trend is shown as the value obtained by subtracting the average [times/day] of the past year from the average [times/day] of the last 1.5 months.

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

In addition, the statistical information that can be calculated by the statistical calculation unit 312 may include the change tendency of the maximum value of the daily occurrence number of alarms in the first period and the second period. The change tendency of the standard deviation can be calculated by replacing the average number of alarm occurrences with the maximum value of the daily occurrence number of alarms when calculating the change tendency of the average number of alarm occurrences in the first period and the second period. .

FIG. 4 further shows the latest notification [number of days], the earliest notification [number of days], and the maximum notification [number of days] as statistical information regarding the number of elapsed days regarding the occurrence of the alarm. The latest alarm [number of days] is the number of days that have passed since the last day when an alarm of the same type occurred (the latest day when an alarm occurred). For example, if the current date is January 20, 2020, and the latest date on which a target type of alarm occurs is January 15, 2020, the latest reporting [number of days] becomes 5.

The earliest alarm [number of days] refers to the number of days that have passed since the date when the same type of alarm first occurred (earliest day). For example, if the current date is January 20, 2020, and the earliest date on which an alarm of the targeted type occurs is January 14, 2020, the earliest reporting [number of days] becomes 6.

The maximum number of alarms [number of 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 was the largest. For example, if the current date is January 20, 2020, and the maximum number of occurrences of alarms of the target type is January 17, 2020, the maximum number of days to issue is 3.

Return to the description of Figure 2 . The receiving unit 313 receives various information inputs, instructions, selections, etc. corresponding to the operator's operations. 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 based on 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 status of the equipment 1 , such as displaying process data and alarm statistical information 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 obtained from the alarm determination unit 315 . That is, the alarm information DB 33A stores alarm information (alarm history information) related to alarms that have occurred so far. The alarm information includes, for example, the alarm item (type of alarm), the alarm occurrence date and time, and the value of the process data related to the alarm (for example, the value of the feed 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 related to the occurrence of alarms in the equipment calculated by the statistical calculation unit 312 . An example of this statistic is 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: central processing unit) 30a, a RAM (Random Access Memory: random access memory) 30b, a ROM (Read only Memory: 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 to be able to send and receive data. Each functional block of the system 30 shown in FIG. 2 is implemented by the physical structure shown in FIG. 3 .

In addition, in this embodiment, the case where the system 30 is composed of one computer is explained, but the system 30 can also be implemented by combining a plurality of computers. For example, in addition to the display unit 30f, a display constituting a different display unit for displaying other information may be provided. In addition, the system 30 may be configured by a tablet terminal. By configuring the system 30 with a tablet terminal, the system 30 can be carried around, and the system 30 can be used while inspecting the equipment 1 , for example. In addition, the structure shown in FIG. 3 is only an example, and the system 30 may have structures other than these, or may not have some of these structures. In addition, a part of the structure may be installed at a remote location. For example, the control unit 31 including the CPU 30a and the like may be installed at a remote location. 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 installed at a remote location via the network.

The CPU 30a is an arithmetic unit that performs control and data arithmetic and processing related to the execution of the program stored in the RAM 30b or ROM 30c. The CPU 30 a is a computing unit that executes a program (monitoring program) that displays graphs and explanatory text of the 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 results of the data on the display unit 30f or stores them in the RAM 30b.

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

The ROM 30c is capable of reading data in the memory unit, and may be composed of a semiconductor memory element such as a flash memory. The ROM 30c can store, for example, computer programs for executing various processes as shown in this embodiment and data that are not to be rewritten. The data that is not to be rewritten includes, for example, information on equipment 1, specifications of components of equipment 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 planned stop period data.

The communication unit 30d is an interface that connects 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 input unit that receives data corresponding to operations performed by the operator, and may include a keyboard and a touch panel, for example.

The display unit 30f has a screen for visually displaying the result of the calculation by the CPU 30a, and may be composed of an LCD (Liquid Crystal Display), for example. The display unit 30f can display graphs or explanatory texts of process data. In addition, the display unit 30f may be provided so that a plurality of displays are connected to form one screen.

The computer program for executing various processes shown in this embodiment can be stored in a memory medium readable by a computer such as ROM 30c, or can be provided through a communication network connected through 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 30 a and the RAM 30 b or the ROM 30 c are integrated.

Furthermore, the system 30 may be equipped 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. In addition, the data processed by the CPU 30a is stored in the memory device.

FIG. 5 is a diagram schematically showing the transition of various display screens displayed on the display device 32 in this 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 display screens shown in FIG. 5 indicate the transition of each display screen according to instructions 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 changes in the system 30, the previous display screen may be replaced by the next display screen, or the next display screen may be displayed while retaining the previous display screen. In addition, the above-mentioned display screen is only an example, and the display device 32 may also display display screens other than these display screens. For example, the screen may be changed to a screen not shown in FIG. 5 (for example, a menu screen) before being changed to a certain 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 be There are multiple types of 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 operator's user ID and password. The login display screen DP0 receives input of the user ID and password from the operator. The login display screen DP0 can be changed to the statistical information display screen DP1, the alarm map display screen DP2, etc.

The statistical information display screen DP1 is a screen that displays statistical information of alarms generated in the device 1 as the operating status of the device. The statistical information displayed on the statistical information display screen DP1 is statistical information calculated by the statistical calculation unit 312. The statistical information of the alarm displayed on the statistical information display screen DP1 can be displayed in a manner corresponding to the type of the alarm that has occurred. Displaying the statistical information in a manner corresponding to the type of alarm that has occurred means displaying the statistical information and the type of alarm so that statistical information on a certain type of alarm can be easily grasped. For example, displaying the statistical information in a manner corresponding to the type of alarm that occurred includes displaying the type of alarm and the statistical information corresponding to the type of alarm side by side.

The alarm map display screen DP2 is a screen displayed to assist the operator of the device 1 in judging whether certain measures need to be taken in response to the generated alarm. The alarm map display screen DP2 displays, for example, the importance or urgency of measures to be taken against the alarm that has occurred. The significance or urgency of the measure can be judged based on, for example, the average number of alarm occurrences within a given period and the number of days on which alarms occurred within the given 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 an area R61 and an area R62.

Area R61 shows information on alarms occurring in device 1 . The alarm information displayed in 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 occurred. In the example shown in FIG. 6 , for example, “alarm A”, “alarm B”, etc. are shown as alarm items. Furthermore, a correspondence relationship is established between the alarms that have occurred, and the occurrence date and time and alarm items are displayed.

Area R62 shows various statistical information of alarms generated in device 1 . Statistics for this alert include statistics for the last week, the last 1.5 months, and the last year. The alert's statistics further include trend and elapsed days statistics. The meaning represented by each piece of statistical information has been explained with reference to FIG. 4 . Therefore, the description of the meaning represented by each piece of statistical information is omitted here.

As described above, according to this embodiment, the display device 32 associates the statistical information of the alarms generated in the device 1 with the types of alarms and displays them. As a result, the operator of the device 1 can grasp statistical information on the occurrence of the alarm for each type of alarm so far. In addition, the operator can grasp the occurrence tendency of the current alarm (for example, whether it occurs frequently) based on the statistical information. As a result, the operator can determine the urgency or importance of measures against the alarm.

In addition, the statistical information displayed on the display device 32 includes information on change trends within a predetermined period (for example, short-term or medium-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 alarm that occurs this time is different from the previous tendency, and can judge the urgency or importance of measures against 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 alarm occurrences (average [times/day]) within a predetermined period (for example, one year) and the date on which the alarm occurred within the predetermined period (similarly, for example, one year). The alarm map showing the relationship between the proportions (daily reporting rate [%]) is displayed on the screen DP2 as the alarm map. For example, the daily transmission rate [%] for one year (365 days) is calculated by the following formula. Daily reporting rate [%] = [(Number of days when alarms occurred within 1 year)/365] × 100

Point a1 is a corresponding point plotted (mapped) on the alarm map based on the average [times/day] and daily reporting rate [%] of alarms of the same type as the alarm that occurred.

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

When the generated alarm is plotted in area R61, the alarm is statistically not a frequently occurring alarm and may be a different alarm than usual. Therefore, it can be judged that the urgency or importance of the measure is high.

When the generated alarm is plotted in the area R62, the alarm has a high reporting daily rate [%] and is considered to occur regularly. Therefore, it can be judged that the urgency or importance of the measure is low.

When the generated alarm is plotted in area R63, the average [times/day] of the alarm is high, but the daily reporting rate [%] is also high, so it is considered to occur regularly in normal times, and therefore the urgency of the measure can be judged or of low importance.

When the alarms that occur are plotted in area R64, the alarms have a low reporting rate [%] and a high average [times/day], so they are likely to occur intensively in a specific period (for example, when device 1 is started). In this case, the alarm may be judged to be of low urgency or importance of the measure.

Point a1 is shown in area R61. Therefore, in accordance with the above, the alarm related to point a1 is displayed on the alarm map display screen DP2 as an alarm with high urgency or importance for measures. Similarly, according to the above content, 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 this 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 on which the alarm occurred within the predetermined period. As a result, the operator of the device 1 can easily determine whether measures should be taken regarding the abnormality related to the generated alarm. In addition, the alarm map display screen DP2 as shown in FIG. 7 can also be used to grasp the tendency of improvement or deterioration of the operating state based on temporal changes in the tendency of alarm occurrence. For example, by comparing the alarm map display screen DP2 in which the alarms that occurred within the last year are mapped with the alarm map display screen DP2 in which the alarms that occurred in the last week are mapped, the latest data can be grasped in comparison with the last one year. The alarm map within one week shows which area of screen DP2 (which area among areas R61 to R64) the alarms have increased or decreased. By performing this kind of analysis, macroscopic and long-term equipment operation management or guide creation can be performed. Furthermore, by changing the emphasis display method (for example, size) of the mapped mark according to the influence of the generated alarm, the influence of the generated alarm can be easily grasped.

[Display method] Next, the flow of processing performed by the system 30 of this embodiment will be described with reference to the flowchart of FIG. 8 . In particular, this flowchart shows the flow of a process for 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 only examples, and the operation processing is not limited thereto.

First, while the equipment 1 is operating, the acquisition unit 311 obtains the process data of the equipment 1 from the DCS 20 (S11). The acquisition unit 311 can store the process data sequentially supplied from the DCS 20 in the storage unit 33 or the like. Thereafter, the alarm determination unit 315 evaluates the process data acquired in step S11 based on the alarm determination logic (S12), and determines whether an alarm has occurred based on an abnormality occurring in the device 1 (S13). When the alarm determination unit 315 determines 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 ended.

In step S14, the statistical calculation unit 312 calculates statistical information on the generated alarms. The statistical information is calculated based on, for example, alarm information that occurred in the past and alarm information regarding the abnormality determined to have occurred in step S13. In addition, in order to calculate the statistical information in step S14, the alarm information regarding the abnormality determined to have occurred in step S13 does not need to be used. Examples of calculated statistical information and methods of calculating statistical information have been described with reference to Figure 4 and so on.

Next, the display control unit 314 controls the display device 32 to display the alarm information regarding the abnormality determined to have occurred in step S13 and the statistical information calculated in step S14 ( S15 ). For example, the display control unit 314 controls the statistical information of alarms generated in the device 1 to be associated with the types of alarms and displays them on the display device 32 . Examples of statistical information displayed by the display device 32 are described with reference to FIG. 6 and so on.

Next, the display control unit 314 classifies the alarm regarding the abnormality determined to have occurred in step S13 (S16), and controls the alarm classification result to be displayed on the display device 32 (S17). For example, the importance or urgency of measures for alarms is judged based on the average number of alarms within a given period and the number of days on which alarms occurred within a given period, and the alarms are classified based on the results of this judgment. The classification result of the alarm corresponding to the importance or urgency of the measure is displayed on the display device 32 as shown in, for example, FIG. 7 .

As mentioned above, according to this embodiment, the display device 32 associates the statistical information of the alarms generated in the device 1 with the types of alarms and displays them. As a result, the past occurrence tendency of alarms can be easily grasped.

As a modified example of the processing shown in FIG. 8 , the system 30 may not perform the processing of steps S16 and S17 , but may allow the operator or the like to perform alarm classification (judgment of the importance or urgency of the measure).

The embodiments described in the above-mentioned embodiments can be appropriately combined or used with modifications or improvements according to the purpose, and the present invention is not limited to the description of the above-mentioned embodiments. It is clear from the description of the scope of the invention that such combinations or modified or improved forms may also be included in the technical scope of the present invention.

1:Equipment 2:Hearth 2a: Fuel supply port 2b:Gas outlet 2c:Gas supply pipeline 2d: Discharge outlet 3: Cyclone 3a: Exhaust gas flow path 4: Recycling material recovery pipe 4a: Ring seal part 5:Rear flue 6: Furnace wall tube 7:Pump 7a:Pump 8:Steam drum 8a:Downpipe 8b: Saturated steam pipe 10:Superheater 10a:Tube 12: Economizer 13:Region 21:Tube 22:Tube 30:System 30a:CPU 30d: Communications Department 30e:Input part 30f:Display part 31:Control Department 32:Display device 100:Turbine 102:Condenser 311: Acquisition Department 312:Statistical Calculation Department 313: Receiving Department 314: Display control department 315:Alarm judgment department

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

DP1: Statistical information display screen

R61:Region

R62:Region

Claims (14)

A display device that displays the operating status of equipment and displays an alarm map showing the relationship between the average number of occurrences of alarms within a given period and the proportion of days when alarms occur within a given period, that is, the daily reporting rate. . The display device as claimed in claim 1, wherein the aforementioned alarm map is divided into four areas to display the urgency or importance of measures for the alarm. The display device according to claim 2, wherein alarms in areas where the average number of occurrences and the daily reporting rate are smaller are judged to have higher urgency or importance in taking measures against the alarm. The display device according to claim 2, wherein the alarm is an alarm in an area where the average number of occurrences is low and the daily reporting rate is high, or the alarm is an alarm in an area where the average number of occurrences is high and the daily reporting rate is low, Or, in areas where the aforementioned average number of occurrences is low and the aforementioned daily reporting rate is low, it is judged that the urgency or importance of measures against the warning is low. The display device according to claim 1, wherein an alarm map mapping alarms occurring during a predetermined period and an alarm map mapping alarms occurring during a period different from the predetermined period are displayed in comparison. The display device of claim 1, wherein the emphasis of the mapped mark is changed according to the impact of the alarm that occurs. Display method. The display device according to claim 1, wherein the alarm map is displayed in correspondence with the type of alarm. The display device according to claim 1, wherein the display device displays measures for judging the alarm based on the average number of occurrences of the alarm within the predetermined period and the number of days on which the alarm occurs within the predetermined period. Significance or urgency. A control device is a display device that controls the operating status of display equipment, and the control device is provided with: a display control unit that displays the ratio of the average number of alarm occurrences within a predetermined period to the day on which the alarm occurred within the predetermined period. The alarm map of the relationship is displayed on the display device. The control device as claimed in claim 9, wherein the aforementioned alarm map is divided into four areas to show the urgency or importance of measures for the alarm. A control method for controlling a display device that displays an operating status of a device, wherein the control method uses an alarm map showing a relationship between the average number of alarm occurrences within a predetermined period and the proportion of days on which alarms occur within the predetermined period. The picture is displayed on the aforementioned display device. The control method as described in claim 10, wherein the aforementioned alarm map is divided into four areas to show the urgency or importance of measures for the alarm. A program used to cause a computer to perform control display A method of controlling a display device for an operating status of equipment, wherein the control method causes an alarm map showing a relationship between the average number of alarm occurrences within a predetermined period and the proportion of days on which alarms occur within the predetermined period to be displayed on the display device. The program as described in claim 13, wherein the aforementioned alarm map is divided into four areas to show the urgency or importance of measures for the alarm.

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