JPH0731498B2 - Power system / facility monitoring device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION A. Field of Industrial Application The present invention relates to a power system / equipment in which a graphic CRT display device as a terminal is connected to a central supervisory control device that performs centralized supervisory control of a power system or facility. More specifically, the present invention relates to a power system / facility monitoring device characterized by a display system of a power system to be a centralized supervisory control target.

B. Outline of the Invention The present invention is a power system / facility monitoring device in which a graphic CRT display device as a terminal device is connected to a central monitoring control device that performs centralized monitoring control of a power system, and displays it corresponding to a cutout area. For the target display information, whether or not to display the display items of the distribution system included in the information and the size of the display are determined using the size table to determine the wide range or narrow range in the power system diagram. In displaying the information, the power system can be easily displayed and meets the viewer's request, so that the operation work can be smoothly performed.

C. Conventional technology Graphic CRT display devices have been used in the field of CAD, CAM, CAE, etc. mainly for offline work such as creating and modifying figures, but recently they have been used as a terminal device for online systems. Is increasing.

For example, in a centralized supervisory control system of a power distribution system, a central computer as a master station processes a large amount of information from slave stations, and the human cognitive ability, judgment ability, and creativity through visual processing are used for this information processing. Graphics that interact with a computer to enable fast, accurate online processing
A CRT display device is prepared.

In this centralized supervisory control system, the graphic CRT display device serving as a terminal device is strongly required to have the following two points in terms of function and performance as compared with the conventional ones.

(1) High-speed display: Responsiveness is a prerequisite for an online system. From display request to display completion, it is necessary to perform various display updates at high speed.

(2) Wide area support ... Since the online system operates for equipment installed in a wide area,
Supports a wide display area and can display the required range according to the display request.

To meet these demands, a system configuration called an intelligent terminal type has been adopted as a graphic display system. This system, as shown in Figure 3, has a graphic CR with a computer.
The T display device 1 is used as a terminal side, and the host computer system 2 in the central supervisory control device is connected to the terminal side by a communication line. Using the host computer system 2 as a master station, the slave station collects various kinds of monitoring information from the real time and displays necessary display information on the graphic CRT display device 1, and commands from the graphic CRT display device 1 side and the host. A centralized supervisory control system is realized by a configuration in which control information automatically processed by the computer system 2 is transmitted from the host computer system 2 to the slave station side.

With this configuration, the host computer system 2 is made to perform a large amount of arithmetic processing or data processing, and the computer in the terminal side graphic CRT display device 1 is made to perform the display processing, so that the responsiveness at the terminal side is improved. While improving, the load on the host computer system 2 is also reduced. Hereinafter, the graphic display processing with the configuration shown in FIG. 3 will be described in detail.

The graphic CRT display device 1 has a CRT monitor 3 that performs refresh drawing by a raster scan display method,
The display processor 4 and the control center unit, graphic information to be displayed is stored (the line segment, a symbol, information such as characters) in the segment buffer 5 _1. Graphic information to be stored in the segment buffer 5 _1, as shown logical relationships in Figure 4, individual graphic elements located in the lowest (data type for specifying the display figure, the display position, display color, etc.) and SD A tree structure is formed by attribute elements SP that are located above these graphic elements SD and define the attributes (visible attributes, detection attributes, etc.) of the respective graphic elements.

Relative graphic information to be stored in the segment buffer 5 _1, is cut out of the graphical information range (rectangular region defined by the coordinate values) displayed request is performed. For this cutout processing, a matrix calculation processing unit 5 ₂ for performing parallel movement and rotation conversion of the displayed figure, a clipping processing unit 5 ₃ for removing a portion protruding from the displayable screen frame of the CRT monitor 3, and the like are prepared. Digital differential analysis (DD) that expands the line segment of the figure information from the display position (coordinate position) to the on / off information of the corresponding bit in the frame buffer 6
A) processing unit 5 ₄ are prepared.

The frame buffer 6 is physically a memory having a bit corresponding to each pixel on the surface of the CRT monitor 3 on a one-to-one basis.
The color display has a plurality of bit planes, and the look-up table 7 is used to determine the display color.

Returning to FIG. 3, the host computer system 2 uses the host computer 8 as a control center to divide the graphic information data as one processing function of the online processing into an appropriate format to divide the auxiliary storage device 9 such as a magnetic disk. Stored in the graphic CRT display device 1, the graphic information in the range required by the graphic CRT display device 1 is transmitted to the graphic CRT display device 1 through the communication lines of the interfaces 10, 11 and the transmission line 12, and the graphic CRT display device 1 receives the received data. Is stored in segment buffer 5 ₁ .

By the way, when performing the operation work using the device shown in FIG. 2, the range of the area to be displayed on the screen differs depending on the purpose and contents because the work contents are diverse. The following is an example of a display area that is required for operation work of a power system, such as a power distribution system.

(Example 1) When performing macro monitoring of the distribution system When a wide range of power outages occur due to a power supply accident or bank accident, the distribution area of one distribution substation is displayed on the pipe surface to check the general condition.

(Example 2) When creating an operation procedure for a distribution line switch When creating and executing an operation procedure consisting of a series of distribution line switch opening / closing operations, the range is usually 1 to 3 distribution lines. , Display them on the screen and perform business.

(Example 3) When performing maintenance of the distribution system diagram When the equipment of the distribution system has changed The distribution system diagram is displayed with the maintenance target location displayed on the pipe surface.

As can be seen from such an example, since the range to be displayed on the screen changes variously, the power system / facility monitoring device needs a function capable of changing the scale of screen display. In the past, since the display size of each display item was fixed in the segment structure of the display information, the display items included in the cut-out area were uniformly expanded at the same ratio according to the scale ratio.
It is displayed in a reduced size. On the other hand, when changing the range displayed on the screen, the items to be displayed differ. For example, when performing a macro display, it is necessary to limit the display items and easily identify the general condition of the whole, and when performing maintenance, it is necessary to display all the items. However, in the past, since the display items included in the display information are uniformly enlarged or scaled according to the scale ratio, the density of information does not change and the size of the display items simply increases or decreases. Therefore, for example, on the screen for macro monitoring, there are many display items and it becomes very difficult to see. Further, among the display items, characters and symbols have a planar spread unlike vectors (line segments), so simply enlarging / reducing the size may unnecessarily increase the size or make the size small enough to be difficult to read.

D. Problems to be Solved by the Invention As described above, in the past, when changing the scale of the display, there was a problem that the operation could not be performed smoothly because the display was not made according to the viewer's request. It was

The present invention has been made to solve such a problem, and when displaying a wide range or a narrow range, it is easy to see, and it is possible to take a distribution system display according to the viewer's request. It is an object of the present invention to provide a power system / facility monitoring device capable of displaying at high speed.

E. Means and Actions for Solving Problems In the present invention, display information consisting of a display item group of a distribution system is stored in a segment buffer as a segment structure, and a size table is stored in the segment buffer. deep. In this size table, the presence / absence of display of the display item and the size of the display are defined by using the information type of the display item included in the display information and the scale factor corresponding to the cutout area as addresses. Then, regarding the display information to be displayed, a control unit including a unit that refers to the size table using the information type of the display item included in the display information and the scale factor corresponding to the cutout area as an address is provided. Therefore, by referring to the size table, among the display items of the display information, those corresponding to no display are not displayed, and those for which the display size is specified are displayed in that size.

F. Embodiments Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1, I is display information consisting of a display item group of a power distribution system such as characters and symbols, which is a segment buffer.
It is constructed and stored as a segment structure in 5 ₁ (see Fig. 2). A size table 13 is stored in the segment buffer 5 ₁ . In these size tables 13, the presence / absence of display of the display item and the display size are defined by using the information type of the display item included in the display information and the scale factor corresponding to the cutout area as an address. More specifically, a to e are information types of display items, M _{1 to} M ₅ are scale factors according to cutout areas, and S ₀ to
S ₅ indicates the size of each display, the size group of horizontal arrangement (row) corresponds to the information type shown at the left end, and the size group of vertical arrangement (column) corresponds to the scale ratio shown at the upper end. Corresponding ones, the presence or absence of display of a display item for which a certain information type is designated and the size of the display are determined by the content of the intersection of the row and the column.

For example, when displaying the display item of the information type a at the scale M ₃ , the size S ₂ is selected. Here, the size shown as S ₀ corresponds to zero, the size shown as size S ₀ corresponds to zero, and when size S ₀ is selected, that item is not displayed. Reference numeral 14 denotes a control unit, which determines the display information corresponding to the scale factor from the display information included in the cutout area, and the visual attribute of the segment structure in the segment buffer 5 ₁ related to the display information. And a means for deciding whether or not to display the display item and the size of the display based on the information type of the display item included in the display information determined to be a scale factor while turning on ing. Regarding the reference to the "row" of the size table, for example, the "row" determined by the information type of the display item is specified together with the designation of the display item at the lowest position of the segment structure. The "row" corresponding to the item is referenced.
When two or more display items are displayed in the same size, the same "row" is designated by making the information types of the display items the same. The size table shown in the figure is a table with 5 rows and 5 columns, but in reality it is 256, for example.
A table with 8 rows and 8 columns is used. Regarding the function of the control unit 14, when applied to the centralized supervisory control system shown in FIG. 2, for example, the host computer 8 and the display processor 4 correspond to the control unit 14, and the selection of display information is performed by the host computer 8 side. The display processor 4 side shares the functions, and the display table 4 side refers to the size table.

Next, when such an embodiment is applied to the system shown in FIG. 2, its operation will be described.

For example, when a certain cutout area corresponding to the enlargement ratio M ₁ is specified on the host computer system 2 side, the host computer 8 selects the display information I corresponding to the specification.
From the host computer 8 to the graphic CRT display device 1
The display information I is displayed on the display processor 4 on the side of the display device ₁ at an enlargement rate M
In the instruction to display is inputted, the visibility of the display information I segment buffer 5 ₁ is turned on, turn off the visibility of the other display information. Then, with reference to the size table 13, the presence / absence of display of each display item and the display size are determined based on the information type of the display item contained in the display information I and the scale factor M ₁ . In this case, the size S ₁ is selected for each of the information types a to c, and the size is zero for the information types d and e, which corresponds to no display. Therefore, the information types a to c are drawn in the frame buffer according to the color information included in the segment structure, and displayed on the monitor by raster-scanning the frame buffer. When a scale factor other than the scale factor M ₁ is designated, the display information is selected accordingly, and the display items are similarly displayed by referring to the size table.

Further, another embodiment of the present invention will be described with reference to FIG. The difference between this embodiment and the above-described embodiment is that in the above-described embodiment, the scale factor is fixed and determined stepwise, and each scale factor is used as an address to refer to the size table. whereas this embodiment of is adapted to scale factor is changed continuously, for example, between _{m 1 ~m 4, m 1 ~m} 4 , for example, three ranges (m ₁ ~m _2), ( m ₂ ~
m ₃ ), (m _{3 to} m ₄ ), and the size table is determined by using each partitioned range as an address. In FIG. 2, 13 is a size table, N _{1 to} N
_3, for example, if the scale factor is changed continuously between m ₁ ~m _4, shows a range of each _{m 1 ~m 2, m 2 ~m} 3, m 3 ~m 4. That scaling factor is referred to as the address range N ₁ when the m ₁ ~m _2, scaling factor is referred to as the address range N ₂ when the m ₂ ~m _3, the scale ratio of m ₃ ~m ₄ Then, the range N ₃ is referred to as an address. Therefore, in each range N _{1 to} N ₃ , the display item and size are fixed, and the scale factor is, for example,
If it is between m _{1 and} m ₂ , the size of each information type a to e respectively
It is determined to be S ₁ , S ₁ , S ₁ , S ₀ , S ₀ . Note that the scale factor is the boundary, m ₂ , m
When it is ₃ , it is included in the ranges N ₂ and N ₃ , respectively. If such a size table 13 is used, continuous scale change is performed, and when the scale ratio is switched from the range N ₁ to N ₂ , for example,
The display items and sizes for each scale will be switched. The control unit 14 has a function of making a scale ratio change request and a function of determining in which range (N _{1 to} N ₃ ) the scale ratio is included. The control unit 14 determines which range (N _{1 to} N ₃ ) the scale factor m ′ of which the scale factor has been changed is included in, and refers to the size table 13 to display the determined range. Whether or not to display each display item and the display size are determined based on the information type of the item. Here, when such an embodiment is applied to the system shown in FIG.
A specific example of function sharing and its operation will be described. The first register size table 13, the host computer 8 makes to segment buffer 5 ₁ in the graphic CRT display device 1. When the host computer 8 is provided with both the scale ratio change request function and the scale ratio determination function, the values in the range of (m _{1 to} m ₂ ), (m _{2 to} m ₃ ) ... It is managed in the host computer 8, and the host computer 8 determines which range the requested scale factor falls within, and instructs the display processor 4 of the determination result. When the display processor 4 is provided with the function of determining the scale ratio, the display processor 4 sets the range (N ₁ , N _2, etc.) to be used for the scale ratio continuously instructed by the host computer 8. Determine and control. When the display processor 4 has the scale ratio change request function, the scale ratio change information input to the display processor 4 is transmitted to the host computer 8, and the host computer 8 determines the range to be used from the information. And instructs it to the display processor 4. In addition, both functions are displayed processor 4
In the case where it is provided, the range to be used is determined from the scale change information input to the display processor 4 and control is performed. In this case, the processing in the host computer 8 becomes unnecessary.

G. Effects of the Invention As described above, according to the present invention, with respect to the display information to be displayed, by using the size table, the presence or absence of the display of the display item and the size thereof are determined according to the scale ratio. Therefore, the density and size of information can be changed depending on the size of the cutout area. Therefore, when displaying a wide range or a narrow range, the distribution system can be displayed easily according to the viewer's request, and the operation work can be performed smoothly. Moreover, each time the cutout area is specified, the size determining element related to the segment structure is not modified, but a size table is provided in advance and the presence or absence of display of the display item and its size are determined by referring to this. Therefore, the display can be performed at high speed.

[Brief description of drawings]

FIG. 1 is an explanatory view showing an embodiment of the present invention, FIG. 2 is an explanatory view showing another embodiment of the present invention, FIG. 3 is a block diagram showing a centralized supervisory control system, and FIG. 5 is an explanatory diagram showing a segment structure of display information stored in FIG. 1 ...... graphic CRT display device, 2 ...... host computer system, 3 ...... CRT monitor, 4 ...... display processor, 5 ₁ ...... segment buffer, 6 ...... frame buffer, 8 ...... host computer, 13 ...... size Table, 14 ... Control unit, I ... Display information.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tetsuji Tanaka 32-9 Tominecho, Ota-ku, Tokyo (56) References JP-A-57-197790 (JP, A) JP-A-58-184186 (JP, A) JP-A-60-90383 (JP, A)

Claims (1)

[Claims] 1. A central monitor and control unit for centralized supervisory control of an electric power system and equipment is connected to a graphic CRT display device, and display information consisting of display items of the electric power system is constructed as a segment structure. The power system / facility monitoring device that displays the display information in the area by specifying the area to be cut out and displayed for the stored display information while storing it in the segment buffer of the graphic CRT display device. In, in the segment buffer, a size table that defines the presence or absence of display of the display item and the display size, using the information type of the display item included in the display information and the scale factor corresponding to the cutout area as an address, Refer to the size table and based on the information type of the display items included in the display information and the scale ratio corresponding to the cutout area. Te, Dentabi system and equipment monitoring device and characterized in that a control unit including means for determining the presence and display size of the display of each display item.