JP5030873B2 - Screen display system - Google Patents

Description

  The present invention relates to a screen display system that can easily determine a problem that has occurred in screen display in a display type system display device that performs monitoring control of an electric power system.

  In a system that displays power system status on a display system display device used by a conventional power company and performs monitoring and control, if there is a problem with the power system status, an alarm using a system function is provided to the operator. I was supposed to notify you. In addition, when the display main body, which is hardware, fails, the operator can make a judgment by turning off the screen.

  On the other hand, in the case of a failure that occurred in the software that displays the display, when information that changes constantly such as video information is displayed, the screen display part does not change, so the user can easily find the failure It was supposed to be possible.

However, when a symbol or the like that does not change the display on the screen unless a power on / off operation of the SW or a power failure occurs is displayed, or when the voltage or TM of the generator output is displayed with little change, Since there was no constant change, the display failure could not be determined reliably.

  In addition, in a terminal such as a personal computer, it is possible to easily recognize a display freeze by blinking a cursor, displaying a time, etc., but a display type display device in a power system state has restrictions on screen layout, etc. Therefore, there is a case where the freeze cannot be recognized by such a method.

  From the above situation, when a power failure occurs at the switch on / off operation of the SW or at the monitoring target electric station, a failure may be noticed for the first time, which may impede operation.

  For this reason, a resident program freeze prevention method for preventing a resident program from freezing due to a shortage of system resources and a technique related to the resident program have been proposed. (For example, refer to Patent Document 1).

Further, an abnormality detection method, an abnormality detection device, a multitask system, and a recording medium that can detect an abnormality regardless of the periodic operation and non-periodic operation of the task and can flexibly cope with an increase in the number of tasks. Has been proposed. (For example, refer to Patent Document 1).
JP-A-2005-92628 JP 2000-181755 A

  As described above, in a system in which a power system state is displayed on a display system display device or the like employed by a conventional power company and monitoring control is performed, a symbol whose display on the screen does not change unless a SW on / off operation or power failure occurs Etc., or when a voltage with little change or a TM of the generator output is displayed, there is a problem that the display failure cannot be determined reliably because there is no constant change. It was.

  For this reason, when a power failure occurs at an on / off operation of the SW or an electrical station to be monitored, a failure may be noticed for the first time, which may hinder operation.

  The present invention has been made in view of such circumstances, and is operated when a problem occurs in a screen display by arranging an image that changes at a fixed period on a display unit such as a display system display device adopted by an electric power company. It is an object to provide a screen display system that can be easily determined by a person.

  The screen display system of the present invention is a screen display system that displays a management screen on the display unit of a business management computer, and a priority order of tasks to be executed for a plurality of tasks including a task for generating and displaying a management screen An execution task determination unit that determines a task to be executed based on the priority data, and a change image display unit that changes an image displayed on a part of the display unit to a different image, The task of changing the image displayed on a part of the display unit to a different image by the change image display means has a lower priority in the priority data than the task of generating and displaying the management screen. .

  Here, the “business management computer” means a computer used for various business management such as a control console of a supervisory control system that performs supervisory control of a power system in a power supply company or the like. “A task for generating and displaying a management screen” means that in a monitoring control system, a task for collecting information from an electric power station that constitutes an electric power system or a system information monitoring control screen is output to a user terminal This means a task for creating display data.

  “Change to a different image” means, for example, an image such as an icon or symbol that is installed on a part of the management screen and changes periodically, and multiple image files such as icons or symbols are displayed alternately. Or by making icons, symbols, etc. into a single animation image file. It also includes drawing of a background color that changes periodically.

  More specifically, when the task of changing the image displayed on a part of the display unit to a different image is executed by the change image display means, the memory area allocated for display display in the corresponding part is changed. Replace with RGB data of the image.

  According to the present invention, while the screen display for business management is functioning soundly, an image that changes periodically is displayed. However, when a problem occurs in the screen display, the displayed image is displayed. Since the change in the period is no longer periodic, even if the management screen is frozen, the user can easily determine a problem with the screen display.

  In addition, the task to be changed to a different image has a lower priority of the task to be executed than the task to generate and display the management screen. Even when processing load becomes high and processing delay occurs, the speed at which the image changes is slower than usual so that the user can easily determine the processing delay status of the computer. .

  In the screen display system of the present invention, the image displayed on a part of the display unit and the image after changing the image are background images of the management screen displayed on the display unit of the business management computer. It is characterized by that.

  Here, “the management screen displayed on the display unit of the business management computer” means, for example, in a power system monitoring control system, display of a system diagram or the like using a symbol or the like representing the state of the power system To do. The “background image” is an image arranged in the background of the system diagram representing the state of the power system, and is not limited to an image having a pattern such as a photograph, a painting, or a pattern. Including monochrome drawing. In this case, “changing the image” means, for example, processing in which the color is periodically changed.

  The “image displayed on a part of the display unit and the image after changing the image” do not have to be a plurality of different image files, but are a single file and a plurality of images by a technique such as animation. This includes the case where is displayed periodically.

  According to the present invention, for example, even when the terminal adopting the present invention is a display type display device or the like in a power system monitoring and control system, and the layout of the management screen is restricted, the user can Due to the change in the image, it is possible to easily recognize the screen display defect and the processing delay of the computer.

  The screen display system of the present invention further includes a load measuring unit that measures a load of the arithmetic unit included in the business management computer, and the change image display unit measures a high load of a certain value or more by the load measuring unit. In this case, an image corresponding to the measured value of the load is displayed on a part of the display unit instead of an image displayed on a part of the display unit or an image obtained by changing the image to a different image. It is characterized by that.

  According to the present invention, since an image such as an icon or a symbol or a background color can be changed depending on the degree of high load of the system, there is an effect that it is possible to easily determine the degree of danger caused by the high load.

  Further, in the screen display system of the present invention, the business management computer is a computer that performs monitoring control of a power system through a transmission line, and has a function of receiving data on a failure state in the power system, and the change The image display means receives the data of the failure state in the power system, and replaces the received image with an image displayed on a part of the display unit or an image after changing the image to a different image. An image corresponding to the failure state data is displayed on a part of the display unit.

  Here, “failure state data in the electric power system” means data notifying the failure of a remote monitoring control device or the like that performs monitoring control of an electric station.

  According to the present invention, there is an effect that the user can easily determine different troubles such as a failure in the monitoring control of the power system and a processing delay due to a high processing load on the computer while performing normal business management. .

  In the screen display system of the present invention, the time for executing the task processing using the idle task is measured by a timer, and the background image is changed according to the timer value when executing the task for performing the system display processing. There is an effect that the user can recognize the processing capability of the CPU in real time.

  In a situation where an increase in the processing load on the CPU is predicted, the task executed here is set to execute only a particularly important task by performing a degeneration process based on the timer value. be able to. Then, by measuring the processing capacity of the CPU after degeneration, it is possible to confirm the effect, and there is an effect that safe system operation is possible.

  According to the present invention, even when a screen display malfunction occurs in the display system display device, the operator can easily determine the screen display malfunction based on the change state of the image arranged on the display unit. Therefore, it is possible to prevent the misunderstanding of the contents grasped from the power system displayed on the screen.

  Also, in the previous system, there was a case where the failure was recognized for the first time when a power failure occurred at the switch on / off operation or at the monitored electric power station. However, the screen display system of the present invention detects the failure in advance. Therefore, it is possible to shorten the response time for troubles.

Hereinafter, a first embodiment of the screen display system 1 of the present invention will be described.
FIG. 1 is a functional block diagram of a screen display system 1 according to the first embodiment.

  In the present embodiment, the management server 10 constituting the screen display system 1 is connected via a network 2 such as a LAN to a monitoring control system 3 and a TC (master station) 4 that perform monitoring control of the power system. Furthermore, TC (master station) 4 communicates with TC (slave station) 51A, TC (slave station) 51B, etc. by cooperation with the monitoring control system 3 to be connected, and the electrical station 5A, electrical station 5B, etc. are provided. Monitor and control electrical equipment.

  The management server 10 includes a transmission / reception unit 11 connected to the network 2, a central processing unit 12 that performs arithmetic processing related to display of a screen for performing power system monitoring control, and information necessary for display of a screen for performing power system monitoring control. It comprises a storage unit 13 to hold, an input unit 14 such as a keyboard for inputting data, and an output unit 15 such as a display device or a printer for outputting data.

  The central processing unit 12 is necessary for transmission / reception processing means 121 for exchanging data with the transmission / reception unit 11, input / output processing means 122 for exchanging data with the input unit 14 or output unit 15, screen display and the like. An execution task determination unit 123 that determines a task to be executed from a plurality of tasks, a system information collection unit 124 that collects information such as a state change in the power system, and a change image display unit that periodically changes an image indicating the soundness of a computer 125, system information screen output means 126 for outputting an operation screen to the display device (output unit 15), and the like.

  The recording unit 13 stores data necessary for display of an electric station information table 131 that stores equipment and state change data to be monitored and controlled, a system diagram on the display device (output unit 15), and the like. A system display table 132, a task priority table 133 that defines the priority of tasks to be executed, and the like are provided.

In FIG. 2, the structural example of the electric station information table 131 is shown.
In the electric station information table 131, facility information of all electric stations that perform monitoring and control is held, and state changes that have occurred in the facilities that constitute the electric stations A5A and B5B acquired by the TCs (slave stations) 51A and 51B. Is transmitted via a TC (master station) 4.

FIG. 3 shows a configuration example of the system display table 132.
The system display table 132 holds data in a format for displaying the state of the power system on the display display device (output unit 15) of the output unit 15.

FIG. 4 shows a configuration example of the task priority order table 133.
The task priority order table 133 defines the priority order for executing the tasks necessary for displaying the power system monitoring control screen. In the present embodiment, the “image change task”, which is a task for changing an image showing soundness by the change image display unit 124, has the lowest priority.

  FIG. 5 shows a processing flow of the execution task determination unit 123 that performs task determination using the task priority order table 133.

  The execution task determination means 123 is a program that is resident in the screen display system 1 of the present embodiment and is always activated to perform processing (S101). When the system information collection task (system information collection means 124) having the highest priority is executed and information such as a state change in the power facility is received, the task priority table 133 (FIG. 4) is referred to, and processing waiting is performed. The task with the highest priority is determined from the tasks necessary for displaying the system information in the state (S102). If the task is not the “n-th” task as the last task (“NO” in S103). The determined task is executed (S104). After execution, the task waiting for processing is further determined and the execution is repeated (S102-4).

  Here, since “image change task” has the lowest priority (No. n) in the task priority table 133 (FIG. 4) (“YES” in S103), all the tasks necessary for displaying the system screen are displayed. After execution, an “image change task” is executed to change an image indicating soundness (S105).

  After execution of the “image change task”, the execution task determination unit 123 executes the system information collection task (system information collection unit 124) having the highest priority and repeats the process.

  Next, processing by the “image change task” (change image display means 125) will be described. In this example, the image is changed 3 seconds after the time when the image was last changed. Specifically, the “image change task” changes the image after waiting for the time recorded in “next execution time” of the task priority table 133 (FIG. 4). If the time when the “image change task” is executed by the execution task determination unit 123 exceeds the “next execution time”, the setting is made so that the image is changed as it is.

  As a specific method of changing the image, for example, a method of alternately displaying a plurality of image data, or a single image file such as an animation GIF in which the image data changes after a predetermined time is displayed. There is a way.

  After the “image change task” is executed, the execution time is recorded in the “final execution time”, and the time obtained by adding the “image change interval” is recorded in the “next execution time”.

  In this example, the “image change interval” is 3 seconds, but this interval is preferably 1.5 to 2 times the time required when all tasks necessary for displaying the system screen are executed. As a result, images showing soundness change at the same interval even when there are few tasks to be processed or when an allowable range of processing delay occurs. It becomes easy to grasp the display change.

  These time settings can be arbitrarily changed by the user from the keyboard (input unit 14) provided in the management server 10.

  Here, when a state change occurs in a plurality of power facilities, the processing necessary for displaying the monitoring control screen is concentrated, so that a high load is applied to the resources of the central processing unit 12. As a result, processing of the preceding task is delayed, and the “image change task” having the lowest priority may be executed exceeding the “next execution time”.

  As a result, the user can recognize as a feeling that the load on the computer has increased because the image indicating soundness has not changed for more than 3 seconds.

  In addition, a so-called “freeze” phenomenon may occur in which the operation of a computer stops due to lack of resources. In addition to resource shortages, “freeze” can also be caused by software malfunctions or peripheral malfunctions.

  In such a case, the “image change task” (changed image display means 125) is not executed, and the image indicating soundness does not change, so that a monitor control screen with little movement is displayed. Even so, the user can reliably detect the “freeze” of the computer.

  As a result, the user can prevent misunderstanding of the grasped contents of the electric power system, and can take measures such as switching to backup operation at an early stage or transferring the monitoring control work to another control station.

  FIG. 6 is an example of an operation screen image in the image display system 1 of the present embodiment. The operation screen in this example is composed of a six-sided display. Among the six screens, a power system diagram is displayed on the right four surfaces, a graph is displayed on the upper left one surface, and a wide area map is displayed on the first lower left surface. In the upper right part of each display, an image (symbol) whose display content changes at a constant cycle is arranged.

  On the right side (1) of the image diagram of the display, a display example in the case of using a change by an image (symbol) is shown. In this example, the black triangular symbol and the human smile symbol are changed at regular intervals.

  Here, when the display is hindered due to a lack of resources due to overload on the computer and so-called freeze occurs, in addition to the display contents such as the power system diagram, a black triangular symbol or a human smile The display contents of these symbols will not change.

  Thus, the user can easily recognize that there is a screen display defect or a computer processing delay situation for a display in which a symbol indicating soundness does not change at a fixed period.

  Further, the lower part (2) of the image diagram of the display shows a display example in the case where a change due to the background color of the operation screen is used. In this example, a gradation from the left and right to the center is used as the background color, and the gradation pattern is changed in the opposite direction at regular intervals.

  As a result, the user can easily recognize that a display whose background color pattern does not change at a constant cycle has a problem with screen display or a computer processing delay. In addition, since the user can compare with adjacent displays, it is possible to determine an abnormal display while performing an operation without particular awareness.

  Note that the screen display system 1 of the present embodiment can be introduced with peace of mind even when the display of the symbol may affect the system diagram display or the like by changing the background color instead of the symbol. .

  As described above, according to the screen display system 1 of the present embodiment, it is possible to grasp screen display defects and computer processing delays by adding simple functions. As well as shortening, it is possible to prevent misidentification of the grasped contents of the power system.

  In this embodiment, the task that changes the image indicating soundness is managed as the task with the lowest priority, so that the processing delay of the computer can be easily grasped. Can be set so that a so-called “freeze” phenomenon in which the operation of a computer stops can be easily recognized by making a program that changes an image showing soundness resident in the system.

[Second Embodiment]
Next, a second embodiment according to the screen display system 1 of the present invention will be described.

  In the screen display system 1 (FIG. 1) of the present embodiment, the central processing unit 12 provided in the management server 10 has a load measuring means 127 (high load detecting means) for measuring the load of resources, and the soundness of the system information screen. It differs from the screen display system 1 of 1st Embodiment by the point provided with the system | strain information screen sound confirmation means 128 to confirm.

  In addition, the storage unit 13 includes a failure information table 134 that holds information on an accident that has occurred in the system, and an image DB 135 that holds image data indicating an image indicating soundness and an image indicating a failure state. This is different from the configuration in the screen display system 1 of the embodiment.

FIG. 7 is an image diagram of a system configuration in the image display system 1 of the present embodiment.
The system information display processing computer (management server 10) constituting the image display system 1 of the present embodiment includes a system display display (output unit 15), and system information collection means 124 of the system information display processing computer (management server 10). Thus, monitoring control of the facilities provided in the electric station A5A, the electric station B5B, and the like is performed via a remote monitoring control device (TC (master station) 4) (not shown).

  Details of the system information collecting means 124 are shown in FIG. First, the information input process receives information from the remote monitoring control device (TC (master station) 4) regarding the state of the facilities of the electric station A5A, electric station B5B, etc., and inputs it to the electric station information table 131 (FIG. 2). To do. In the electric station information processing, the transmitted information is processed into electric station information necessary for screen generation of the system information, and the electric station information is transmitted to the system information screen generation means (changed image display means 125) by the electric station information transmission process. To transmit. Also, in the electric station information transmission process, when information related to a failure or the like of the remote monitoring control device is received, a failure notification is generated and transmitted to the system information screen sound confirmation means 128.

  In FIG. 7, the high load detection means (load measurement means 127) measures the resource load of the central processing unit 12 included in the system information display processing computer (management server 10), and a high load is measured. In addition, a high load detection notification is transmitted to the system information screen sound confirmation means 128.

  Details of the system information screen sound check means 128 are shown in FIG. In the failure information input process, a failure notification transmitted from the system information collection unit 124, a high load detection notification transmitted from the high load detection unit (load measurement unit 127), and the computer hardware failed due to the function of the computer. The hardware failure notification notified at this time is input to the failure information table 134 (FIG. 12). In the failure occurrence notification processing, when the “image change task” is executed from the task priority table 133 (FIG. 4) by the execution task determination unit 123, failure occurrence is important based on the failure content data held in the failure information table 134. The soundness display information including the degree information is created and transmitted to the system information screen creating means (change image display means 125).

  Details of the system information screen creation means are shown in FIG. In the electric station information input process, the electric station information transmitted from the system information collecting unit 124 is input to the system display table 132. In the soundness information input process, the soundness display information transmitted from the system information screen sound check unit 128 is input to the system display table 132. Based on the soundness display information and the image DB 135 (FIG. 13) included in the system display table 132 (FIG. 14) in the present embodiment, the system display screen processing generates screen display information accompanied by background and symbol change processing, It transmits to the system | strain information screen output means 126 (change image display means 125).

  In FIG. 7, the system information screen output means 126 generates image information based on the screen display information transmitted from the system information screen creation means (changed image display means 125), and displays it on the system display display (output unit 15). Display an image.

  FIG. 11 shows a schematic flow from the occurrence of a failure in the power system and the occurrence of a high load in the management server 10 to the change of the image indicating soundness in the present embodiment.

  In this example, when a failure occurs in the power system, the display of the symbol indicating soundness is changed to a symbol with which a specific failure state can be determined. Further, when a high load occurs in the resources of the management server 10, the display of the background image is changed to a color / pattern that allows the specific load state to be determined.

  First, since the load measuring unit 127 detects that the resource of the management server 10 is in a light and high load state, the content is recorded in the failure information table 134 (S201). Further, the content of a failure that has occurred in the power system is recorded in the failure information table 134 (S202).

  A configuration example of the failure information table 134 is shown in FIG. In the failure information table 134, the time when the notification of failure and high load is received, the content of notification, and the state of failure and load are stored. Thereafter, when it is further detected by the load measuring means 127 that the load state is severe, it is recorded in the failure information table 134 (S203). As a result, the latest failure and load status are recorded in the failure information table 134.

  The high load detection by the load measuring means 127 is performed using a technique such as a watchdog timer. In general, in the watchdog timer, when the CPU cannot finish the task processing, a reset signal of a counter included in the watchdog timer cannot be transmitted, and an alarm and a program itself are reset when a predetermined time elapses. Here, a high load on the CPU can be detected by detecting a counter reset signal transmitted from the CPU. In addition, the CPU load can be detected more accurately by setting the “image change task”, which is the lowest task, to be monitored.

  Specifically, although the alarm or the program itself is not reset, a situation in which the delay of the counter reset signal is repeated can be regarded as a high load state of the CPU. Then, “mild” and “severe” can be determined based on the frequency.

  For example, when 60% of the time to reset the alarm or the program itself has elapsed by the load measuring means 127, it is recorded in the failure information table 134 as a point where a high load is suspected. Further, the load measuring means 127 is set to record “minor” if it occurs up to 10 times per minute as “severe” if it occurs 10 times or more and record it in the failure information table 134. To do.

  Further, a failure of the monitoring control device or the like occurring in the power system is detected by a function provided in the monitoring control system 3, and “mild” or “severe” is determined based on the content. In the determination here, for example, a case where the information on the state change of the electrical equipment transmitted from the TC (master station) 4 is inconsistent with the information on the “state change” included in the electrical station information table 131 of the storage unit 13. It is determined as “mild”, and a case where the signals of the TC (child stations) 51A and 51B to be transmitted from the TC (parent station) 4 cannot be received is determined as “severe”.

  In FIG. 11, when the execution task determination unit 123 determines that the task is to execute the “image change task” (change screen display unit 125) based on the task priority table 133 (S 204), the change screen display unit 125 is displayed. This is executed to acquire fault (mild) and high load (severe) data held in the fault information table 134 (S205). Next, the change screen display means 125 extracts a change image corresponding to the state of failure and high load from the image DB 135 (S206), and displays it on the display device (output unit 15) (S207).

  FIG. 13 shows a configuration example of the image DB 135. The image DB 135 holds background and symbol image data. Here, two types of image data before and after the change in normal times and various types of image data specifically indicating a failure / high load state are held. Normally, two types of image data are alternately displayed, and when a failure / high load state is detected, the change image display means 125 displays image data indicating a specific failure / high load state to notify the user.

  The change image display unit 125 extracts data indicating a failure / high load state included in the system display table 132 that defines the display content of the system information screen, and extracts corresponding image data from the image DB 135.

  Note that image data indicating a specific failure / high load state is preferably displayed with an operation such as blinking. As a result, it is possible to easily detect the occurrence of “freeze” caused by something other than a failure or a high load.

  In FIG. 14, the structural example of the system | strain display table 132 in this embodiment is shown. In the system display table 132 according to the present embodiment, in addition to display information related to symbols and the like of facilities constituting the power system, display contents of symbols indicating soundness and background images are defined.

  The system information screen output unit 126 is configured to display a display device (display unit 15) based on display information regarding symbols and the like of facilities constituting the power system included in the system display table 132, and display information of symbols indicating soundness and background images. ) Is displayed.

  In this example, the system configuration is simplified by giving the system display function of the monitoring control system 3 the display of the symbol indicating the soundness and the background image. In addition, it is possible to set the symbol indicating the soundness and the background image to be displayed on the screen independently of the monitoring control system 3. Thereby, the symbol and background image which show soundness can be displayed, without being influenced by the state of the supervisory control system 3.

  Further, in this example, the failure in the power system is indicated by “symbol indicating soundness” and the occurrence of high load in the management server 10 is indicated by “background image”. However, by providing a corresponding image, It is also possible to set so as to indicate both the failure in the power system and the occurrence of a high load in the management server 10 by either one of the symbol indicating the nature or the background image.

  As described above, according to the screen display system 1 of the present embodiment, specific failure and high load information is displayed on the screen that is normally operated by the user, so that a quicker response is possible.

  In this embodiment as well, when the CPU of the computer generates a so-called “freeze” at normal times, the image showing soundness does not change, so this situation can be easily recognized. .

  In addition, in the screen display system 1 of the present invention, various effects can be achieved by changing various settings.

  For example, whether or not the processing capacity of the CPU has sufficient capacity for a change in the state of the power system caused by a typhoon or the like using the function of changing the image for confirming the soundness of the screen display system 1 of the present invention. It can be set so that it can be determined.

  Specifically, when the passage of a typhoon or the like is predicted, the load on the computer is measured by running a task (idle task) having a certain processing load in advance. The color of the background image can be changed according to the measurement result. For example, when there is a margin in the load, the system is changed to the green system, when there is no margin in the load, the system is changed to the yellow system.

  Here, when processing an idle task having a certain processing load, the color of the background image to be displayed is selected according to the time required for the image to check the soundness to change. For example, if an idle task has a processing load that requires 2 seconds as a standard, the time required for task processing is measured, and if it changes within 2 seconds, the green system is within 3 seconds. If the yellow system exceeds 4 seconds, it is set to display a red background image.

  Specifically, when processing by the idle task starts, the hardware timer built in the computer is restarted to start timing. The image DB 135 includes background image data corresponding to each required time, and whenever the task for displaying the system screen by the monitoring control system 3 is executed, the background image data corresponding to the timer value is acquired and the background image is changed. .

  Also, when the typhoon approaches, etc., it is set so that the degeneration process is performed according to the timer value, so that only the task with a particularly high priority is executed based on the data provided in the task priority table 133 To do. Next, by measuring the processing capacity of the CPU by the above method after degeneration, the effect can be confirmed in real time.

  Accordingly, the user can take measures to avoid danger in preparation for a state change predicted by the approach of a typhoon or the like.

  Furthermore, by applying the above function, it is possible to set so as to measure the soundness of a specific processing task among a plurality of processing tasks. Specifically, by setting a task for changing an image indicating soundness immediately below a processing task whose soundness is to be measured, the soundness of the processing task can be accurately grasped.

  In addition, various effects can be achieved by changing various settings. Further, the screen display system of the present invention can be applied to various business systems without being limited to the adoption to the power system monitoring control system.

1 is a system block diagram of a screen display system 1 according to a first embodiment. It is a structural example of the electric station information table 131 with which the memory | storage part 13 of the screen display system 1 concerning 1st Embodiment is provided. It is a structural example of the system | strain display table 132 with which the memory | storage part 13 of the screen display system 1 concerning 1st Embodiment is provided. It is a structural example of the task priority order table 133 with which the memory | storage part 13 of the screen display system 1 concerning 1st Embodiment is provided. It is a flowchart of the process which determines a task using the task priority order table 133 with which the memory | storage part 13 of the screen display system 1 concerning 1st Embodiment is provided. It is an image figure of the operation screen in the screen display system 1 concerning 1st Embodiment. It is an image figure of the system configuration of the screen display system 1 concerning 2nd Embodiment. It is a figure explaining the detail of the system | strain information collection means 124 of the screen display system 1 concerning 2nd Embodiment. It is a figure explaining the detail of the system | strain information screen sound confirmation means 128 of the screen display system 1 concerning 2nd Embodiment. It is a figure explaining the detail of the system | strain information screen creation means of the screen display system 1 concerning 2nd Embodiment. It is a figure which shows the general | schematic flow which changes the image which shows soundness in the screen display system 1 concerning 2nd Embodiment. It is an example of composition of failure information table 134 with which storage part 13 of screen display system 1 concerning a 2nd embodiment is provided. It is a structural example of image DB135 with which the memory | storage part 13 of the screen display system 1 concerning 2nd Embodiment is provided. It is a structural example of the system | strain display table 132 with which the memory | storage part 13 of the screen display system 1 concerning 2nd Embodiment is provided.

Explanation of symbols

1 Screen display system 2 Network 3 Supervisory control system 4 TC (master station)
5A Electricity station A
5B Electricity station B
DESCRIPTION OF SYMBOLS 10 Management server 11 Transmission / reception part 12 Central processing part 13 Storage part 14 Input part 15 Output part 51A, 51B TC (child station)
121 Transmission / Reception Processing Unit 122 Input / Output Processing Unit 123 Execution Task Determination Unit 124 System Information Collection Unit 125 Changed Image Display Unit 126 System Information Screen Output Unit 127 Load Measurement Unit 128 System Information Screen Sound Check Unit 131 Electricity Station Information Table 132 System Display Table 133 Task priority table 134 Failure information table 135 Image DB

Claims (2)

A screen display system for displaying a management screen on a display unit of a business management computer,
An execution task determination means for determining a task to be executed based on the priority order data, the priority order data defining the priority order of the tasks to be executed for a plurality of tasks including a task for generating and displaying a management screen;
Change image display means for changing an image displayed on a part of the display unit to a different image,
The task of changing the image displayed on a part of the display unit to a different image by the change image display means has a lower priority in the priority data than the task of generating and displaying the management screen. Screen display system.   The image displayed on a part of the display unit and the image after changing the image are background images of a management screen displayed on the display unit of the business management computer. Screen display system.