JP2000287388A - Graphic user interface - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a graphic user interface which can search and display various kinds of data of many facilities in a large-scale system with less screen hopping and simple operations. SOLUTION: When 'SYSTEM MONITOR' is selected, an electric power station tree diagram display screen 401 and a monitored data display screen 402 are displayed, and the latter is divided into a monitored data list screen 402-1 and a particularly-monitored data display screen 402-2. Electric power station selecting TAB (4)-1 and data selecting TAB (4)-3 are each provided on the display screens 401, 402. When 'SYSTEM' is selected in the selecting TAB (4)-1, an electric station tree diagram (4)-2 grouped (controlled in a folder) in accordance with the connection of systems is displayed from the upper rank of voltage classes. For example, when an arbitrary electric station (500 kV-A1s/s) is selected in the electric station tree diagram (4)-2 and 'TM' is selected in the data selecting TAB (4)-3, the list of TM data of the A1s/s is displayed on the screen 402-1. By selecting the data of an arbitrary line from the list, a trend graph is displayed on the screen 402-2. The selecting TABs (4)-1, (4)-3 can each be selected independently.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power system monitoring and control system, and more particularly to a graphic user interface (GUI) applied to system monitoring.

[0002]

2. Description of the Related Art A power system monitoring and control system has started from remote monitoring and control of a power station and a substation, and has now grown into a power information control system having both a control system function and an information system function. In recent power information control systems, system operation, accident recovery, reliability monitoring, erroneous operation prevention, and the like have been added to the basic monitoring and control functions, and higher speed processing and response are required. In addition, in order to use the information collected by online monitoring as management information and business support information, the entire power company exchanges and shares power supply information from the central power supply dispatch office to subordinate control stations and sales offices. A system operation related information system has also been realized. The “power system monitoring and control system” in this specification is used in a broad sense including these systems.

In a power system monitoring and control system of such a large scale, databases distributed to each electric station are connected to a general-purpose network via a server and can be used freely from anywhere. Further, in order to speed up the transmission of a huge amount of information, some recent systems draw the system diagram data by receiving a drawing function.

[0004] On the other hand, a GUI has been developed which conveys the status of the entire system and allows the user to intuitively and accurately make decisions and operations. For example, tracks and power stations and substations in the power system diagram to be monitored are placed on a map to enable monitoring that matches the operator's geographical sense. Visualization with colors and patterns according to the conditions makes it easier for operators to grasp macroscopically ("Intelligent Central Power Supply System to Achieve Advanced System Operation; Hitachi Review, Vol. 78, 1996, pp. 21-25") .

[0005]

With the increase in the scale of the power system monitoring and control system, various types and a large amount of information can be used from anywhere, but on the other hand, the information can be used efficiently or effectively with the conventional GUI. And flooding of information will occur.

Accordingly, there is a need for a screen configuration that facilitates macroscopic grasping while efficiently concentrating enormous amounts of information. For example, the power system diagram is used in all graphical user interfaces, such as a central power supply dispatching station, a subordinate control station, and a sales office. When a user at an arbitrary substation receives and restores the system diagram data, it is often difficult to grasp the location of the fault or the spread only by displaying the jurisdiction of the own substation. However, if other jurisdiction systems are also displayed, the display area of the jurisdiction range is narrowed, which makes monitoring and screen operation inconvenient. This tendency becomes more remarkable when online information such as a power flow is superimposed on the system diagram. Therefore, it is an important task for the power information GUI to provide a system diagram screen that efficiently concentrates the display of the jurisdiction range and the non-jurisdiction range, superimposes online information, etc., and also makes it easy for the user to grasp the macro. ing.

Further, today's GUI is not just a display screen for information but an editing means for selecting and processing information.
Furthermore, it is an operation means replacing the conventional control panel, and the screen itself is a tool for monitoring and controlling. For example, an operator in the monitoring and control work performs a corresponding action while making a determination through three processes of grasping the outline, grasping the main factor, and grasping the auxiliary factor. For this reason, the operator cab is equipped with three CRTs. In addition, using a plurality of CRTs, a substation monitoring screen showing the substation names of main substations and numerical values of monitoring information in a table format is displayed, and an arbitrary substation is designated to pop up a substation system diagram. In addition, a trend graph of one information is displayed by designating a predetermined portion of the system diagram.

[0008] As described above, in the conventional GUI, when information is selected from macro to micro, the screens of a plurality of CRTs are frequently crossed. For this reason, the number of screen operations required to extract necessary information increases, and it takes time. In addition, if the screen information is divided vertically into substations, when the user wants to see the information of other related substations, the screen must be returned to the original state once and the same operation must be repeated again. Therefore, the number of screen operations further increases. For this reason, there is a demand for a GUI that can select a plurality of pieces of information necessary for monitoring and control with less screen operation.

An object of the present invention is to solve the above-mentioned problems of the prior art, and to provide a graphic user interface capable of searching and displaying various information of a large number of facilities in a large-scale system or the like by a simple operation with a small number of screens. It is in.

[0010]

In order to achieve the above object, the present invention provides a graphic user interface for visualizing and providing power system information, wherein a system monitor screen for monitoring monitor information of a plurality of facilities in the system is provided. An equipment hierarchy structure screen (electric station tree in the embodiment) capable of covering a plurality of equipment, and an equipment search path selection tab (hereinafter referred to as an equipment selection tab) added to the screen to select a search path for an electric station or the like. In the embodiment, an electric station selection tab), and a monitor information screen and an information selection tab added to the screen or the system monitor screen to select an information type of the monitor information are selected, and are selected from the equipment selection tab. Predetermined by the combination of the target equipment specified on the equipment hierarchy structure screen by the specified equipment search path and the information type selected from the information selection tab And displaying the Nita information to the monitor information screen.

The equipment selection tab has a tab item including one or more of “system”, “voltage class” or “electric station type”. By selecting this tab item, an electric station tree is displayed as the equipment hierarchy structure screen. It is characterized by displaying.

The substation tree is managed by folders grouped according to system connection, voltage class or substation type from the top of the system including the jurisdiction range, and the substation tree is displayed on the facility hierarchy structure screen. When the display cannot be performed at one time, the display range is moved or a lower system of an arbitrary electric station is developed and displayed.

[0013] The information selection tab includes "TM" for selecting real-time display of online values, "A / E" for displaying a status change event for a predetermined time, and detailed specifications or operation of the equipment or its subordinate equipment. "SV" to display status
The information type is selected by having a tab item including at least one of the following.

When a TM is selected on the information selection tab, a list of TM information of one or a plurality of substations selected on the substation tree screen is displayed in a part of the monitor information screen. TM selected on the list
A value trend graph is displayed on another part of the monitor information screen.

If A / E is selected on the information selection tab, the A / E of one or more electric stations selected on the electric station tree screen is displayed in a part of the monitor information screen.
A time-series list of the E information is displayed, and a time chart showing the operation of the device selected on the list is displayed on another part of the monitor information screen.

When SV is selected on the information selection tab, a list of SV information of one or more electric stations selected on the electric station tree screen is displayed in a part of the monitor information screen. Further, the detailed information or the operation state of the device selected on the list is displayed on another part of the monitor information screen.

Further, TM, A /
If a plurality of tab items are selected from E and SV, the monitor information by the combination of each electric station selected from the electric station tree screen and the combination of each information type selected from the information selection tab is different. Display in window.

Further, "TM", "A"
/ E "and" SV "are divided into a plurality of tab items, and different types of monitor information are displayed for each information type.

According to the present invention, the optimum information search path according to the classification such as the connection of the system or the voltage class can be selected with a single touch from the equipment hierarchical structure (for example, a substation tree) by the tab switching method. . In addition, the combination of the equipment hierarchy structure and information type based on system connection
By integrating all the information of the target system including the jurisdiction system, it is possible to search and display information according to a unified operation procedure, so that complicated operations and screen crossing are not required unlike the conventional information search, and the desired information can be obtained. Can be displayed easily and speedily.

[0020]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 2 is a schematic diagram showing an example of a power system monitoring and control system to which the power system monitoring GUI of the present invention is applied.

The power monitoring and control system connects a central power supply dispatching station 1, a plurality of branch power stations 2, a plurality of control stations (power stations) 3, and power stations and substations / distribution stations via a system monitoring and control network 4. The power supply stations 1 and 2 and the control station 3 have a monitoring CPU 6 for inputting online information from the network 4 and a system 8 for storing online information, system diagrams, and equipment information of the system in a database 8 and distributing the database in response to a request from a client. An information server 7 is provided, and the servers are connected by a system operation related information network 5 to enable sharing of data distributed and stored in each database 8.

A system information terminal 10 for monitoring control, system planning, and the like is connected to the server 7 via a general-purpose LAN 9. Although the GUI to which the present invention is applied is realized by the terminal 10 using one CRT in this embodiment, the GUI can be applied to a large screen or a screen such as a console including a plurality of CRTs.

FIG. 3 shows an embodiment of an information terminal for realizing a power system monitoring GUI. Information terminal 10 is a general-purpose LAN
9 comprises a general-purpose PC (personal computer) connected via a communication modem 11. The control unit 12 has a function of controlling editing and display of a screen, and an OS (Operating System).
Windows (a trademark of Microsoft Corp., USA).

The screen display processing section 13 has a system diagram display 13-
1. It has a function of creating and displaying images of each specification screen under the OS, such as the monitor screen display 13-2, and displays each screen using system diagram data or online information received from the system information server 7. It is created and drawn in the frame memory 14. The input / output processing unit 18 transmits an instruction from the input device 21 to the control unit 12 via the internal bus 20, and displays a screen created and updated according to the instruction on the display device 22. The instruction from the input device 21 is given through an icon or the like on the screen. A task processing unit (only a monitoring unit is shown) 19 has an application program corresponding to tasks such as monitoring, operation, and maintenance, and executes under the control of the control unit 12. Hereinafter, a monitoring operation will be described as an example.

The information received periodically or by request from the system information server 7 during execution of the monitoring by the business processing unit 19 is stored in the online DB 15 and the equipment DB 16 by a storage device such as a hard disk. The facility database is filed for each facility or device for each electric station.
The system diagram data is restored by the system diagram display 13-1,
The information is stored in the system diagram file 17-1 of the screen DB 17 for each system, each voltage class, and the like. The system diagram may be stored in a file in advance. The screen DB 17 stores an initial screen such as a macro system diagram, a detailed system diagram, and a system monitor, a format 17-2 of a transition screen, and the like. A system monitor file 17-3 stores a menu screen having a tab configuration, a TM screen, and the like.
Formats such as transition graphs are included.

Hereinafter, the configuration and operation of a monitoring screen mainly created and displayed by the control unit 12 and the screen display processing unit 13 will be described in detail together with its realizing functions. The GUI 100 according to the present embodiment includes a screen in which an operation unit and an application area unit are integrated, and provides a monitoring screen necessary for power system monitoring and operations. The monitoring screen of this embodiment is roughly divided into a system diagram and a monitor screen. The former is an application based on a menu of “macro” or “detailed system diagram”, and the latter is an application based on a menu of “system monitor”.

FIG. 1 shows the configuration of a macro screen. The area 102 is a task selection menu, and includes “monitoring”, “operation”,
“Maintenance” and the like are selected by the respective icons. In the menu area 200, a menu of the selected task is pulled down. The example shown is the display menu of the “monitoring” task, “macro”, “detailed system diagram”, and “system monitor”.
Consists of The area 103 is an icon 'corresponding to the menu, and includes "macro", "detailed system diagram", and "system monitor" from the left. Screen operation area 101 is area 10
2 and 103, but may include an area 104 in which icons' for common operations such as submenu calling are arranged.

In the submenu area 300, a submenu corresponding to the selection of the display menu is pulled down, and is mainly used for changing the display in the same screen. In addition,
Similarly to the icon ', an icon "corresponding to the submenu" may be displayed in the area 104.

The illustrated example is a submenu of "macro". "Voltage" indicates the voltage class pull-down menu,
For example, the voltage class of the system diagram to be displayed is shown as a higher voltage system “154 kV or more”, a lower voltage system “77 kV”, or the like. “Tidal value” switches whether to display the tidal value in the system diagram.

"Navigation" displays a navigation window (hereinafter, referred to as a navigation window). In the “macro” of the present example, the “voltage” is displayed when it is a lower system, but may be always displayed.

The "wide-angle / fish-eye" menu is displayed when "voltage" is a higher-level system, and when the "wide-angle / fish-eye" menu is selected, the entire genealogy expanded to the full screen width around the jurisdiction range. Is displayed. When the display menu is deleted, the application area 400 may be enlarged to the full screen width.

The application screen is a menu,
When "macro" or "detailed system diagram" is selected, a system diagram is displayed. When "system monitor" is selected, a system monitor screen is displayed. An area 500 displays a message common to the systems.

By default on the initial screen when the GUI is started, the state of "macro" is displayed, and as the application screen, the entire area in which the jurisdiction of the substation is usually arranged at the center of the screen and the surrounding non-jurisdiction is arranged at the outer periphery. The pedigree is displayed. The entire system diagram on the initial screen displays a higher system having a higher voltage class, for example, 154 kV or more. An index for tracing the system is shown so that the state of the entire system can be understood by the upper system.

FIG. 4 is a partially detailed view of the entire genealogy. Each electric station in the whole genealogical map is arranged on a map with geometrically deformed outlines (topography), and the electric stations are connected by straight lines according to a predetermined rule. Therefore, the jurisdiction and non-jurisdiction are separated. For example, it is possible to display a full genealogy in which the former is laid out at the center of the screen and the latter is laid out at the outer periphery.

Lines are drawn by vertical lines, horizontal lines, and diagonal lines (45 ° in this example), and intersections are placed on the higher voltage class,
In the case of the same class, priority is given to horizontal, vertical and diagonal lines. Also,
The line is a three-dimensional representation with shading or the like, and there are cases where the thickness of the line is changed depending on the voltage class or the like, and cases where it is not changed. Further, the backgrounds of the jurisdiction range and the non-jurisdiction range are color-coded so that both can be identified at a glance.
For example, the jurisdiction is brown and the non-jurisdiction is green. In addition, in preparation for conversion from color display to monochrome,
The background color of the jurisdiction range or the non-jurisdiction range may be a lighter color (beige or yellow).

Electric stations are symbolized according to the type as shown in FIG. 4B, and visualization that is easy to understand is realized. A substation name is also added near each substation symbol. In addition, the attached information of electric stations and tracks on the screen,
It can be displayed by clicking as in the conventional system diagram.

According to the whole system diagram of the present embodiment, since the electric stations are generally arranged geographically, the user can intuitively grasp the whole system and efficiently operate based on the regular track drawing. The screen layout enables high-density information display. In particular, since a layout in which the jurisdiction range and the non-jurisdiction range are separated can be formed, the monitoring of the jurisdiction range is facilitated in combination with the background color coding.

FIG. 5 shows a "wide-angle" screen of the entire pedigree. When the "Wide-angle" menu is selected, a full genealogy is displayed, which is enlarged to the full screen width centering on the jurisdiction range. At this time, the menu is hidden, but the corresponding icon ',', "
Is displayed in the operation area 101, so that the menu,
Can be selected without displaying. By expanding the application area 400, a system diagram with a large amount of information can be displayed more easily. Note that the details of this drawing are also displayed by the same drawing as that of FIG.

FIG. 6 shows a "fisheye" screen of the entire pedigree. If you select the “Fisheye” menu, your territory will expand as usual,
Peripheries outside the jurisdiction display a system diagram in fisheye display format. Here, the fisheye display format refers to, for example, an image similar to a photograph using a fisheye lens.

In the fisheye display format of the present embodiment, the image is not distorted from the center to the periphery, but the lines in the non-jurisdictional range are almost uniformly compressed and brought to the outer periphery of the enlarged application area 400, thereby expanding the line. The jurisdiction range is evenly enlarged and displayed at the center of the screen. Such a fish-eye display is possible because the entire pedigree of the present embodiment realizes a layout in which the jurisdiction is divided into a central part and the non-jurisdiction is divided into an outer part.

According to the "fish-eye" system diagram, the entire system diagram including the non-jurisdictional system is displayed, and it is easy to grasp macroscopically by recognizing the geographical sense and the situation of the outer peripheral system. In addition, since the jurisdiction range is displayed with ample space, the jurisdiction range is more easily seen, and a balloon display of a tide or the like becomes easier.

FIG. 7 shows an entire system diagram displaying the tidal current values.
In the illustrated example, the line power flow value and the substation load are superimposed on the entire genealogy of the “wide area”. The thickness of the track depends on the voltage class. The tidal current values are shown on the track, the loads are shown in the rectangular frames blown out near the substation, and the tidal current direction is shown by arrows. The color of the background of the rectangular frame and the shade of the numbers are easy to discriminate by reversing the combination such as white / blue depending on the tide value and the load. The power flow value and the substation load may be displayed independently.

Further, the line in an abnormal section such as a failure such as a power failure or an overload during normal times is changed to a color different from the normal color (yellow-green) to red or the like, and is displayed in different colors from the line in the normal state. Note that, in the three-dimensional display of the track, the line looks thin even with the same line width because of shading. For this reason, when the line in the abnormal section is switched to the two-dimensional display, the apparent wire diameter appears thick, so that the abnormality can be seen at a glance.

FIG. 8 shows a processing flow of monitoring screen display in the monitoring operation. When the GUI of the present embodiment is started, first, an entire genealogy is created (or read from the system diagram file 171) (s10), and an initial screen is displayed according to the macro system screen format (s20).
When a “monitoring” task is specified on this screen (s3
0), a display menu is displayed (s40). According to the selection of this menu, the macro system diagram display processing (s5
0), the process proceeds to a detailed system diagram display process (s60) or a system monitor display process (s70).

In the macro system diagram display processing (s50), first, the voltage class is set to "154 kV or more" from the submenu.
(S501), and when different from the displayed voltage class, the entire genealogy corresponding to the specified voltage class is displayed (s501).
502). Next, is there a designation of “tide” (s50)
3) Check if "wide-angle / fish-eye" is specified (s5
04) If specified, the system diagram is displayed in wide-angle / fish-eye (s505). At this time, if the “tidal current value” menu is also selected, the direction of the tidal current and the TM value are displayed in a predetermined format. The superimposed display of the substation load is also performed in the same manner as in the case of “tidal current”.

FIG. 9 shows a schematic processing flow for creating and displaying a system diagram. This processing receives the current system diagram data from the system information server 7, is executed by the system diagram display 131, and is filed for each voltage class and for each layer. Note that the system diagram may be drawn each time in the process s10 of FIG. 8 without creating the display data in advance.

First, system diagram data of a specified voltage class and a specified hierarchy is read out in the monitoring target range (s101). In the case of the full genealogy, a schematic terrain contour map including the monitoring target range and the surrounding area is drawn (s102). Next, the electric station symbols are arranged in a substantially geographical positional relationship (s103), and the lines between the electric stations are connected according to a line drawing algorithm (s104). In the line drawing algorithm, the connection is made up of vertical lines, horizontal lines, and diagonal lines (in this example, 45 °), and the intersections are arranged in the order of higher voltage classes, and in the case of the same class, horizontal, vertical, and diagonal lines are prioritized. Note that the geographical arrangement of the electric station symbols is within the allowable range of the track drawing algorithm.

Next, a three-dimensional drawing of the line is performed (s10).
5). For three-dimensional drawing, increase the brightness at the center of the track,
Adds shadows to the border between the track and the background. Further, on the monitoring target system diagram, the jurisdiction range and the non-jurisdiction range of the terminal are classified by background color (s106). The system diagram drawn on the frame memory 14 in this manner is stored in the system diagram file 171.
And is displayed on the CRT screen (s10
7).

Next, in the menu shown in FIG.
In the case where is selected, the configuration and operation of the menu screen and the application screen will be described. FIG. 10 shows a submenu displayed by selecting the “Detailed System Diagram” menu. The other screen configuration of the GUI 100 is the same as that of FIG.

The "voltage class" column 201 is the same as in the case of "macro". The menu in the “color change” column 202 is the display color of the line in the system diagram, “standard” is color coding for normal operation, overload, and power outage, “by system” is color coding by power system, and “utilization rate” is Color coding by line load factor is performed. The “layering” column 203 includes option buttons 26 for “voltage”, “active power”, “reactive power”, and “frequency” of TM values.
Contains 1 and displays the value of the specified item.

A “mask” column 204 is for designating an unoperated area of the system diagram, and a “work tag” 205 is for storing and displaying the settings of a system with a power outage, and icons 501 and 502. By instructing, for example, the setting procedure described later can be started. The icon in the “alarm confirmation” column 206 is an operation button for stopping an alarm after confirming an alarm due to flicker or spotlight in a system diagram or the like.

In the “navigation” column 207, an arbitrary area of the system diagram can be designated on the navigation window, and the range of the system diagram displayed on the application screen 400 can be selected. FIG. 11 shows a screen example of the navigation window. The screen of the navigation window 207 is divided into four parts vertically and horizontally, and divided into 16 areas as a whole. Each area 208 does not necessarily need to be equally divided, and may be varied according to the terrain and information density.

The system diagram displayed in the navigation window 207 is basically an entire system diagram corresponding to "voltage class".
On the other hand, in the system diagram of the application screen 400 corresponding to the designated area of the navigation window, the degree of detail can be arbitrarily changed by decluttering. The decluttering bar 212 is displayed at the right end of the screen 400 when “Detailed System Diagram” is selected from the menu.

The range of the system diagram displayed on the application screen 400 can be identified by changing the color of the identification frame 209 in the corresponding area of the navigation window 207. In addition, when the screen is moved on the system diagram of the application screen 400 by dragging the background (Panning), the identification frame 20 of the navigation window 207 is displayed.
9 also moves, and the reverse operation is also possible.

The navigation window 20 having such a function
7 is convenient for selecting an arbitrary area from the entire genealogy and displaying the enlarged / reduced genealogy in the application area 400. In particular, when displaying an enlarged system diagram with a high degree of detail, a position on the entire system diagram can be selected or confirmed using the navigation window, so that the system diagram displayed on the application screen 400 cannot be identified as a detailed system. Nothing.

The outline of the display processing of the detailed system diagram is shown in FIG.
This is performed after 60. The “voltage class” (s601), “color change” (s602), and “layering” (s603) specified by the menu are confirmed. Further, a designated area (s60) from "navigation"
4) Then, the degree of detail is confirmed by decluttering (s605), and the related data corresponding to the designation is read out and the system diagram is displayed (s606). After this, s60
The process returns to any one of steps 1 to s605 and waits for the next designation.

The processing such as "color change" and "mask" may be performed by interruption. Also, “voltage class” in s601
Various modifications can be made, such as performing a screen-crossing between voltage classes without re-designation. If the area is not specified by the navigation window, the entire genealogy of the specified "voltage class" is displayed.

Next, a characteristic screen based on the “detailed system diagram” of the present embodiment and its mechanism will be described in detail. First, screen crossing between different voltage classes will be described with reference to FIGS.

FIG. 12 shows a detailed system diagram of a voltage class of 154 kV. The voltage class is the "voltage class" in the subwindow.
Recognizable in column 101. The substation A indicated in the application area 400 has reduced the voltage from 275 kV to 154 kV and 77 kV. The voltage of each bus at the A substation is represented by a voltage, an active power, as shown in TM (telemeter) values 111 to 113.
Reactive power and frequency can be checked. These T
M can be set to display or non-display in the “layering” column 202, and the state shown in the figure is set to display all the TM values.

Next to the transformer symbol 262 indicating that the voltage has dropped from 275 kV to 77 kV at the substation A, a stair symbol 251
Is displayed. The stair symbol 251 is a guide for displaying a detailed system diagram of a lower voltage class. When this stair symbol 251 is clicked using pointer 263, a screen shown in FIG. 13 is displayed. Voltage class column in the figure
Looking at 201, it can be confirmed that the displayed detailed system diagram is a 77kV detailed system diagram.

The staircase symbol 251 is used to display a relevant portion of the system diagram of a lower voltage class than the system diagram being displayed, while the staircase symbol 252 shown in FIG. 13 is of a higher voltage class than the system diagram being displayed. Used to display relevant parts of the system diagram. As the down / up stairs shown, stair symbol 25
1, 252 has different display symbols, higher than the current,
The user can easily identify which of the lower part of the system diagram can be displayed.

FIG. 14 shows a processing flow of screen crossing between different voltage classes. When the user clicks a stair symbol with a mouse (S201), it is determined whether or not the click is a stair symbol (S202), and the system diagram data and display position data of the reference destination of the stair symbol are read (S201).
203). System diagrams with different voltage classes are created as different system diagram data. Next, the read system diagram data is displayed with reference to the read display position data (S204).

In this embodiment, the difference in the voltage class is reflected on the background display of the navigation window. For example, FIG. 12 is a detailed system diagram of 154 kV, and FIG. 13 is a detailed system diagram of 77 kV. The difference of each voltage class can be confirmed by looking at the voltage class column 201. However, the voltage class field 20
Numeral 1 indicates the difference of the voltage class by numerical display. Therefore, in order to allow the user to easily recognize which voltage class the displayed detailed system diagram is,
The background of the navigation window 207 shown in FIG. 11 is displayed in a predetermined display color (or pattern) according to the voltage class.

Next, referring to FIGS. 13, 15, and 16,
The decluttering of this embodiment will be described. The decluttering is a function for changing the degree of detail of the system diagram displayed according to the enlargement / reduction, and is executed by operating the declutter bar 212 displayed on the right end of the application screen of each diagram.

The term “reduction” as used herein refers to a case where the enlargement / reduction is not performed when the graphic data of the detail screen is displayed, and the detail screen is displayed in a smaller size than the original display size. Displaying a wider area is called reduced display. On the other hand, displaying a detailed screen with a size larger than the original display size to display a narrower area with attention is referred to as enlarged display. The detail level of the system diagram indicates that the higher the detail level, the more the displayed facility information is included, and the lower the detail level, the less the displayed facility information.

As shown in FIG. 13, in the decluttering of this embodiment, there are six levels of detail, and the current level of detail is "
3 ”. To reduce the system diagram by operating the decluttering bar 212, drag the grid 221 attached to the decluttering bar 212 upward on the screen.
When dragging from "3" to "4", the screen is updated to a screen as shown in FIG.

The degree of detail in FIG. 15 is “4”, the system diagram is displayed in a reduced scale as compared with the screen in FIG. 13, and the equipment number 201 displayed in FIG. 13 is not displayed. When the reduced display is performed, the interval between the displayed facilities becomes narrower.
If displayed as it is, there may be cases where the facilities are displayed overlapping each other. Thus, by thinning out and displaying the display objects according to the settings in this way, the visibility of the user can be improved.

FIG. 16 is an example in which the system diagram is further reduced. The detail level is “5”, and the LS (disconnector) symbol 301 and the CB (breaker) symbol 302 displayed in FIG. 15 are not displayed.

Next, the setting of the “mask” will be described with reference to the detailed system diagram of FIG. 17 (equivalent to FIG. 12). “Mask” is a rectangular display function used by the user to mark on the system diagram. For example, a hatched rectangle 511 can be set by giving an instruction using a mouse or the like to a location that is displayed on the system diagram but is not updated, or a location that requires careful operation, using a mouse or the like.

Conventionally, setting and canceling of a mask are instructed by selecting from a menu. In this embodiment, a mask setting icon 501 and a mask release icon 502 are displayed in the mask column 204 of the menu screen, so that setting and release of the mask can be directly performed. To use the mask release icon 502, drag the mask 511 to open the mask release icon 50.
By dropping on 2, the mask 511 is deleted. Note that dragging refers to moving a mouse pointer while clicking on a target, and dropping refers to releasing the hand from the mouse by placing the dragged target 1 on another target 2.

The characteristic screens and functions of the submenu by selecting the “detailed system diagram” have been described above. In this embodiment, the screen can be switched between the “macro” menu and the “detailed system diagram” menu.

FIG. 18 is an explanatory diagram of screen switching based on the common specification of macro / detail. If you select "Monitor" in the menu and select "Macro" or "Detailed system diagram" in the menu, the detailed system diagram displayed using the macro system diagram as an index or the system diagram already displayed It is possible to redisplay in the final state of the display. Also,
It is also possible to display a detailed system diagram corresponding to the name of an electric station or a transmission line clicked on the macro system diagram, and to display a macro system diagram centered on the electric plant or the like clicked on the detailed system diagram.

FIG. 19 shows another embodiment of the macro system screen. The configuration of the menu screen is different from the macro system screen of FIG. In the screen operation unit 101 of the GUI 100, icons such as a task menu, a display menu, and a “macro” submenu in FIG. 1 are arranged.
In the menu area 105, “system classification”, “TM”
Menu items such as "Information", "SV information", "Navi window background", and "Decluttering", and a navigation window are displayed. That is, items similar to those in the “detailed system” submenu shown in FIG. 11 are arranged.
According to this, since the menu items common to each task are displayed on the menu screen from the beginning, it is often convenient when an expert processes a plurality of tasks.

Next, in the menu shown in FIG.
The configuration and operation of the menu screen and the application screen when "" is selected will be described.

FIG. 20 shows the configuration of the system monitor screen. When "system monitor" is selected from the menu, the application area 400 is expanded to the screen width, and the system monitor screen by the tab switching method is displayed. That is, the equipment hierarchical structure for each system (such as an electric station tree) and the information type (T
M, A / E, SV, etc., a selection tab is set, and one-touch selection of a desired information search path is enabled by a combination of the two by switching the tabs. Note that the selection tab is compared to a file heading of a file cabinet, and by using this tab switching method, information composed of a plurality of sections can be defined in one window.

The system monitor screen is divided into an electric station tree display screen 401 and a monitor information display screen 402, and the latter is composed of a monitor information list screen 402-1 and a specific monitor information display screen 402-2. On the left and right electric station tree display screens 401 and the information display screen 402, an electric station search path selection tab (called an electric station selection tab) -1 and an information selection tab-3 are arranged, respectively.

The substation selection tab-1 in this embodiment has an icon including tab items such as "system" and "voltage class", and the substation tree according to the substation search path of the selected tab item. Is displayed. Information selection tab-3 is TM
Information "TM", alarm event information "A / E", SV
It has icons including tab items such as information. Tab-1 and tab-3 can be selected independently of each other.

FIG. 21 shows a display example of the substation tree-2. (A) is an electric station tree for each connection of the system corresponding to the selection of the "system" tab (equivalent to -2 in FIG. 20).
(B) is a substation tree corresponding to the selection of the “voltage class” tab. The electrical stations in each folder in (b) are shown in an arrangement corresponding to (a), but any arrangement is possible.

The electric stations of the target system including the jurisdiction system are managed by folders grouped according to the connection of the system from the highest voltage class. For example, the “all system” is composed of five 500 kV systems A to E (A to C in the drawing),
"A system 500kV" is A1-A3 substation (s / s),
It consists of “A system 275 kV” and “A system 154 kV”. The same applies to the systems B to E. The rectangles in the figure indicate folders for each substation group or sub-system. Each folder stores information files of substations, switchyards, power stations, and the like. Icons corresponding to the contents are provided for folders and files. If the substation tree cannot be displayed at once, it is possible to move the range by up / down or to expand the lower system by selecting an arbitrary substation.

As described above, the substation selection tab-1 on the system monitor screen according to the present embodiment contains the substation tree created based on the system diagram. Therefore, since the lower order of the system can be expanded as needed, there is no need to display a large number of substation lists as in the related art, and the operation can be easily performed through a compact screen along the search path.

Further, the power system is operated in a tree-like configuration, and the spread of the electrical phenomena propagates along the connection of this system. In addition, since each power supply is supplied through a network close to a tree, the management of the power system is performed based on the substation tree. Therefore, it is convenient to search the monitoring information in accordance with the management of the substation tree.

FIG. 22 shows a schematic diagram of the configuration of the power system.
All systems under the jurisdiction are from the highest 500kV to 500kVA
System, 500kVB system, etc. The electric substation (A) of the 500 kVA system is the Mito substation bus 1 (5
00kV bus), Mito substation bus 2 (275 kV bus), and Mito substation bus 3 (154 kV bus). The 275 kVA system branches into a tree (radial) such as the Mito substation bus 2 and the Hitachi substation bus 1, and the 154 kVA system branches such as the Mito substation bus 3. The same applies to the electric substation (B) of the 500 kVB system.

Next, the screen operation of the system monitor with the tab configuration of this embodiment will be described. From selection tab-1 "system"
Is selected from the displayed substation tree-2, for example, "A1s / s" of the 500 kVA system is specified, and "TM", "A / E" or "SV" is selected on the selection tab-3. When "TM" is selected, the screen 402-1 displays 50
A list of TM items of “A1s / s” of the 0 kVA system is displayed. The same applies to “A / E” and “SV”. Note that the result is the same even if the information search tab-3 is selected and then the substation search tab-1 is selected.

FIG. 23 shows a screen for monitoring TM information by the system monitor. On the screen 402-1, the name of the electric station (here,
A1s / s), equipment names (bus name, Tr name, etc.), item names (voltage, active power, etc.) and a list of current values are shown. In the display, "Electric substation name", "Equipment name", "Item name",
Names such as “current value” each serve as a sort key to enable sorting and boundary setting with adjacent items. The current value is updated at a predetermined cycle. Further, the screen 402-1
Screen 402 when an arbitrary line (equipment, equipment) is selected from
At -2, the trend graph of the TM value is displayed in the selected order in different colors.

FIG. 24 shows a screen of an alarm event (A / E) of the system monitor. "A / E" on selection tab-3
Select a tab, select the “System” tab on the selection tab-1, and double-click a folder of, for example, “500 kVA system” from the substation tree-2.
Electric stations A1s / s to A3s / s in the "A system" group are selected, and an alarm event list of those electric stations is displayed on the screen 402-1.

The alarm event list includes an alarm event list of an electric station specified individually or collectively in the electric station tree, including “date / time”, “electric station name”, “equipment name”, “name” and “operation name”. Are displayed in chronological order according to the item of, and are updated at a predetermined cycle. Further, the screen 402-1
When an arbitrary row is selected from, a screen 402-2 displays a time chart of entering, turning off, locking, and the like of the equipment and facilities of the electric substation.

FIG. 25 shows an example of the SV information screen of the system monitor. Select “tab” in “Selection tab-1”, substation tree –
2 to “A1s / s” and “SV” in the selection tab-3, respectively, the designated electric station (A
A list of SV information of SV-related devices (CB, LS, etc.) installed at 1 s / s), and detailed information of devices and equipment selected from the SV information list are displayed on a screen 402-2. The operation state (ON / OFF) of the switch selected from the SV information list may be displayed on the screen 402-2.

The SV information list covers the items of “electric station name”, “equipment name”, “name of name” and “operating state (SV value)”, while updating the “operating state” at predetermined intervals. indicate. In the detailed information of the screen 402-2, the specification of the designated device is displayed together with the device image. It is also possible to capture online image information in the device image.

FIG. 26 is a flowchart of the display processing of the system monitor screen, which is the details of s70 in FIG. When "system monitor" is selected in the menu, a system monitor screen is displayed (s701). When the search information is selected from the display information selection tab-3 (s702), the processing shifts to "TM", "A / E" or "SV" processing. In each process, when an electric station is specified from the electric station selection tab-1 and the electric station tree-2 (s703), TM information search processing (s70)
4) A / E information search processing (s705) or SV information search processing (s706) is started.

In the TM process, a list of the searched designated substation TM information is displayed on the screen 402-1 (s704).
2) Further, a trend graph of the TM value of the designated facility is displayed on the screen 402-2 (s7043). The drawing information of these display contents is stored in the temporary storage memory (s7
044), if there is a recall of the TM at the same electric station (no electric station change request) at s7041, redisplay is performed (s707). A / E processing and SV processing are performed in the same manner.

As described above, the system monitor screen of the present embodiment includes the substation path selection tab and the information type (TM, A / E, SV) selection tab based on the substation tree representing the system-specific equipment hierarchical structure. In addition, desired information can be integrated and searched for and displayed by a combination of both selection tabs. With this tab switching method, an information search path can be easily selected on one screen. Also displays detailed information of the selected tab item, such as real-time trend display of online values, status change time chart of several minutes before and after, and detailed specifications and images of equipment, and display of switch ON / OFF. Can also be realized. Furthermore, since the information once displayed can be displayed again with a single touch of a tab, the screen crossing is reduced, and the status and factors of the system can be easily grasped from the related information in the electric substation.
Further, since the monitoring screen can be realized by one viewer (CRT), the screen operation is simple and the cost is reduced.

Next, another embodiment of the system monitor screen will be described. In the tab configuration described above, as shown in FIG.
1, the selection tab-1 is arranged side by side, and the selection tab-3 is arranged side by side on the screen 402. However, the present invention is not limited to this configuration, and various modifications are possible.

FIG. 27 is a system monitor screen showing the arrangement of selection tabs according to another embodiment. In this example, tab-3 is provided on the entire system monitor screen, and screen-
1 has a selection tab-1. According to this, since the position of the selection tab-3 can be freely displayed,
1, 3 can be displayed at the bottom of the screen as shown,
When displaying a plurality of system monitor screens in a multi-window display, the tabs of each screen can be arranged so as to be always visible.

FIG. 28 shows a display example of a plurality of system monitor screens. In the illustrated example, TM information is selected and displayed on one system monitor screen, and A / E is displayed on another system monitor screen.
Information is selected and displayed.

Further, the information selection tab-3 in FIG.
"TM1""TM2","A / E1""A / E2",
“SV1”, “SV2”, etc. are provided in a plurality of parts. For example, the information item names such as the voltage in TM1 and the active power and the like in TM2 can be separately selected and switched and displayed on the screen 402-2 or displayed in parallel in another window. That is, screens having different contents can be displayed for each information type. Furthermore, regarding the parallel screen by tab items and the parallel screen by dividing one tab item, the background color and pattern are changed for each screen,
Identification can also be facilitated.

In each of the embodiments shown in FIG. 27 and FIG. 28, the selection tab
Electric station selection by 1, 2 is possible. The “electric station type” shown in the item of the selection tab-1 in FIG. 27 selects the type of power station, substation, and the like, and, for example, makes it possible to list the power generation status of the entire system.

According to this embodiment, the search result is stored in another CRT
In the system monitor screen of this embodiment, a selection tab combining information to be viewed and an electric station (equipment) to be viewed is provided. Desired monitoring information can be obtained, and the status of the system and the cause of the abnormality can be quickly grasped by a simple screen operation.

[0098]

The graphic user interface according to the present invention includes a display screen for a hierarchical structure of monitored equipment such as an electric station or a transmission line, a display screen for monitor information, and a connection screen for setting a target equipment search path for the former. Since the system monitor screen is provided with a selection tab for selecting a voltage class and the like and a selection tab for selecting an information type such as TM and SV in the latter,
It is possible to integrate all information based on the combination of the equipment hierarchy structure and information type such as system connection. According to this, an optimum information search path can be selected by switching between the tabs, and there is an effect that desired information can be easily searched and displayed.

Further, the equipment of all the systems under the jurisdiction is managed by folders grouped according to the connection of the systems from the upper level, and is displayed as, for example, an electric power plant tree. The range can be moved by downing and the lower system can be expanded by selecting an arbitrary substation, so that the entire system can be displayed on one screen, and the information on the desired equipment can be displayed easily and speedily without crossing the screen. There is.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing a basic screen configuration including a macro system diagram (all system diagram) in one embodiment of a graphic user interface (GUI) of the present invention.

FIG. 2 is a schematic configuration diagram of a power system monitoring and control system.

FIG. 3 is a functional block diagram showing an embodiment of a configuration of an information terminal for realizing a power system monitoring GUI.

FIG. 4 is an explanatory diagram showing a partial detail screen according to an embodiment of the entire genealogy.

FIG. 5 is an explanatory diagram showing an enlarged screen (wide angle) according to an embodiment of the entire genealogy.

FIG. 6 is an explanatory diagram showing an enlarged screen (fisheye) according to an embodiment of the entire genealogy.

FIG. 7 is an explanatory diagram showing an example of a screen in which a tidal current and a load are superimposed on the entire genealogy.

FIG. 8 is a flowchart illustrating an example of a process of displaying a GUI monitoring screen.

FIG. 9 is a flowchart showing an embodiment of a system diagram creation / display process.

FIG. 10 is an explanatory diagram showing an example of a menu screen of a detailed system diagram.

FIG. 11 is an explanatory view showing one embodiment of a navigation window screen.

FIG. 12 is an explanatory diagram showing a screen configuration according to an embodiment of a detailed system diagram (upper).

FIG. 13 is an explanatory diagram showing a screen configuration according to an embodiment of a detailed system diagram (upper).

FIG. 14 is a processing flowchart of screen crossing between different voltage classes.

FIG. 15 is an explanatory diagram of screen crossing showing a system diagram in which the degree of detail is changed from the system diagram of FIG. 13;

FIG. 16 is an explanatory diagram of screen crossing showing a system diagram with a different degree of detail from the system diagram of FIG. 15;

FIG. 17 is an explanatory diagram showing mask settings on the screen of the detailed system diagram.

FIG. 18 is an explanatory view showing screen switching based on common specifications of macros and details.

FIG. 19 is an explanatory diagram showing another embodiment of a screen configuration including a macro system diagram.

FIG. 20 is an explanatory diagram showing a configuration example of a GUI system monitor screen.

FIG. 21 is an explanatory diagram showing an electric power plant tree for each system and each voltage class.

FIG. 22 is an explanatory diagram showing a tree-like configuration of a power system.

FIG. 23 is an explanatory diagram showing an example of a TM information monitoring screen of the system monitor.

FIG. 24 is an explanatory diagram showing an example of an A / E information monitoring screen of the system monitor.

FIG. 25 is an explanatory diagram showing an example of an SV information monitoring screen of the system monitor.

FIG. 26 is a flowchart showing an example of display processing of a system monitor screen.

FIG. 27 is an explanatory diagram showing another embodiment of the tab configuration of the system monitor screen.

FIG. 28 is an explanatory diagram showing an example of parallel display on a system monitor screen.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Central power supply dispatching station, 2 ... Branch feeding station, 3 ... Control station (power station), 4 ... System monitoring and control network, 5 ... System operation related information network, 6 ... Monitoring CPU, 7 ... System information server, 8 ... Database, 9 LAN, 10 system information terminal, 11 communication modem, 12 control unit (OS), 1
3: Screen display processing unit, 13-1: System diagram display, 13-2
... monitor screen display, 14 ... frame memory, 15 ... online DB, 16 ... equipment DB, 17 ... screen DB, 17-
DESCRIPTION OF SYMBOLS 1 ... System diagram file, 18 ... Input / output processing part, 19 ... Business processing part, 20 ... Internal bus, 21 ... Input device (mouse, keyboard), 22 ... Display device (CRT), 100 ... Monitoring screen, 101 ... Screen Operation area, 102: business selection menu, 103, 104: area, 200: monitoring business menu, 300: sub menu, 201: "voltage class" column,
202 ... "color change" column, 203 ... "layering" column,
204 ... "Mask" column, 205 ... "Working tag", 206 ...
"Alarm confirmation" column, 207 ... "Navigation" column,
212 ... "Decluttering bar", 251, 252 ...
Stair symbol, 400 ... application area, 40
1: electric station tree display screen, 402: monitor information display screen, 402-1: monitor information list screen, 402-2:
Display screen for specific monitor information, ... System monitor screen,-
1: Electric station selection tab, -2: Electric station tree, -3:
Information selection tab.

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Takashi Owaki 5-2-1 Omika-cho, Hitachi City, Ibaraki Prefecture Inside the Omika Plant, Hitachi, Ltd. (72) Inventor Hideaki Suzuki 7-1-1 Omika-cho, Hitachi City, Ibaraki Prefecture No. 1 Hitachi, Ltd., Hitachi Research Laboratory (72) Inventor Yasushi Harada 7-1-1, Omika-cho, Hitachi City, Ibaraki Prefecture F-term in Hitachi, Ltd. Hitachi Research Laboratory F-term (reference) 5E501 AA13 AC04 BA03 BA05 CA03 FA04 FA06 FA13 FA14 FA22 FA46 FA48 FB34 FB43 5G064 AC08 BA02 BA07 BA12 CB01 DA01

Claims (14)

[Claims] 1. A graphical user interface for visualizing and providing power system information, comprising: a system monitor screen for monitoring monitor information of a plurality of facilities in a system; and a facility hierarchy structure screen capable of covering the plurality of facilities. Equipment search path selection tab (hereinafter referred to as equipment selection tab) that is added to the screen and selects a search path for electric stations etc.
And a monitor information screen and an information type selection (hereinafter, referred to as an information selection tab) added to the screen or the system monitor screen to select an information type of the monitor information. Displaying predetermined monitor information on the monitor information screen based on a combination of the target equipment specified on the equipment hierarchy structure screen by the equipment search path selected by the above and the information type selected from the information selection tab. Graphic user interface. 2. The equipment selection tab according to claim 1, wherein the equipment selection tab has a tab item including at least one of “system”, “voltage class”, and “electric station type”, and by selecting this tab item, the equipment hierarchy is selected. A graphic user interface for displaying an electric station tree as a structure screen. 3. The substation tree according to claim 2, wherein the substation tree is managed by folders grouped according to system connection, voltage class or substation type from the top of the system including the jurisdiction range. A graphic user interface, wherein, when it is not possible to display on the equipment hierarchical structure screen at one time, a display range is moved or a lower system of an arbitrary electric station is expanded and displayed. 4. The facility according to claim 1, wherein the information selection tab includes “TM” for selecting real-time display of online values, “A / E” for displaying a status change event for a predetermined time, and the equipment. Alternatively, the graphic user interface has a tab item including at least one of “SV” for displaying detailed data or operation status of a lower device, and selecting the information type. 5. The information selection tab according to claim 4, wherein at least one tab item of “TM”, “A / E”, and “SV” of the information selection tab is divided into a plurality of items, and each of the information types has different contents. A graphic user interface for displaying monitor information. 6. The information selection tab according to claim 4, wherein a plurality of tab items are selected from “TM”, “A / E”, and “SV” of the information selection tab, and a plurality of pieces of monitor information retrieved by the selection are displayed in parallel. A graphical user interface characterized in that the graphical user interface is displayed. 7. A graphic user interface for visualizing and providing monitor information of a system including a jurisdiction range on a screen of an information terminal receiving online information from a power system monitoring and control system, wherein a plurality of substations in the system are monitored. A system monitor screen for monitoring information is an electric station tree screen showing a hierarchical structure of the plurality of electric stations, and an electric station selection tab added to the tree screen to select one search path for each system or each voltage class. And a monitor information screen and an information selection tab added to the screen to select an information type of the monitor information. The electric station displayed according to the tab item selected by the electric station selection tab A predetermined monitor based on a combination of any electric station specified on the tree screen and any information type selected from the information selection tab Graphic user interface distribution and, and displaying on the monitor information screen. 8. The graphical user interface according to claim 7, wherein the information type includes at least one of telemeter information (TM), alarm event (A / E), and status value information (SV). 9. The system according to claim 8, wherein when the TM is selected on the information selection tab, the TM information of one or a plurality of electric stations selected on the electric station tree screen is displayed in a part of the monitor information screen. A graphical user interface for displaying a list and displaying a trend graph of TM values selected on the list on another part of the monitor information screen. 10. The electric station according to claim 8, wherein when A / E is selected on the information selection tab, one or more electric stations selected on the electric station tree screen are displayed in a part of the monitor information screen. A graphical user interface for displaying a time-series list of / E information and displaying a time chart showing the operation of the device selected on the list on another part of the monitor information screen. 11. The monitor according to claim 8, wherein when an SV is selected on the information selection tab, SV information of one or a plurality of electric stations selected on the electric station tree screen is displayed in a part of the monitor information screen. A graphical user interface for displaying a list, and further displaying detailed data or operation status of a device selected on the list on another part of the monitor information screen. 12. The electric station selected in the electric station tree screen according to claim 8, wherein when a plurality of electric stations are selected from TM, A / E, and SV on the information selection tab, A graphic user interface for displaying monitor information based on a combination for each information type selected from a tab in separate windows. 13. An information terminal that receives online information from a power system monitoring and control system, and in a graphical user interface that visualizes and provides system information of a system including a jurisdiction range, the system includes: A screen operation area for arranging a plurality of operation buttons for selecting a business menu such as `` An application area for displaying an application screen corresponding to the menu selected from the display menu area is arranged. When the menu of the “system diagram” is selected as the application screen, a system diagram of the system including the jurisdiction range, Monitor when the menu of "System monitor" is selected Graphic user interface and displaying the monitor information of the elephant electric station. 14. The electric station tree screen showing the hierarchical structure of electric stations in the jurisdiction range and being added to the tree screen in the application area when the menu of the “system monitor” is selected in claim 13. Displaying a system monitor screen including an electric station selection tab for selecting one search path for each system or each voltage class, and a monitor information screen and an information selection tab added to the screen for selecting an information type of the monitor information A combination of an arbitrary electric station selected from the electric station tree screen displayed according to the tab item selected by the electric station selection tab and an arbitrary information type selected from the information selection tab. A graphic user interface for displaying predetermined monitor information on the monitor information screen.