JPH02244396A - Plant monitor and control equipment - Google Patents

Abstract

PURPOSE:To improve the operation efficiency by providing a movable extension board and supplying the extension board at need when the number of operators in charge of monitoring increases. CONSTITUTION:A center control board 105 is equipped with an extension terminal 109 which supplies a signal to a signal line 104 for transmitting the processing result of a process computer 103, and to this extension terminal, the movable extension board 111 is connected detachably through an extension signal line 110. Further, one or plural CRT display devices 112 are installed on the extension board 111 and coupled with a signal line 104 which transmits the output of the process computer 103 through the extension signal 110 and extension terminal 109. If any abnormality occurs to a plant, the movable extension board 111 is moved and coupled with the extension terminal 109 through the extension signal line 110, so that the extension board 111 is coupled with the center control board 105. Consequently, the processing result of the process computer 103 can be displayed on the CRT display devices 112 provided on the extension board 111 to improve the efficiency of the operation.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention is a plant monitoring and control device for operators to monitor and operate various plants such as nuclear power plants. Regarding.

(Conventional technology) When operating various large-scale plants such as nuclear power plants, operators monitor process signals obtained from various sensors installed in various parts of the plant to understand and make judgments about the status of the plant. Then, determine the next operation item to take and operate the operation switch.

Conventionally, when monitoring plant conditions, sensors installed in various parts of the plant are directly connected via transmission lines.
Meters and recorders were used that directly presented sensor signals. In this case, in large-scale plants, the number of process signals to be monitored increases, and the number of meters and recorders used for signal monitoring increases accordingly. The panels of plant monitoring and control equipment used for operation have tended to become larger.

For this reason, in recent years, with the development of computer technology, the values of process signals from each part of the plant are inputted to a process computer via transmission lines, the signals are processed by the computer, and the results are organized and transmitted to a CRT. 2. Description of the Related Art Plant monitoring and control devices that display information on a display device, such as a display device, have come into use.

According to this method, the contents of the screen displayed on the display device can be changed freely according to the operator's request, so plant information that was previously obtained from a large number of meters and recorders can be changed to one or more. It will be available from the display device.

As a result, the number of meters and recorders installed on the panel of the plant monitoring and control device is significantly reduced, and the size (width, height) of the panel is also reduced.

On the other hand, with the increase in computer capacity, automation of plant operation is also progressing. In automatic plant operation systems using computers, the computer itself incorporates software that implements the logic for plant operation, and executes that logic by comparing it with signals indicating the plant status obtained from various sensors. This enables automatic operation of the plant by sending plant operation signals to the control terminals of each part of the plant. In such parts of a plant where automated operation has been introduced, the actual operation performed by the operator is to reach a confirmation point in the operation progress called a breakpoint set between the progress of each operation phase of automated operation. In many cases, the only operation required is to confirm and permit the progression from one operation phase to the next operation phase.

Further, in a more advanced driving system, it will be possible to achieve fully automated driving without the need to confirm or permit the breakpoints mentioned above.

Due to this situation, the operation switches used to operate the plant used to have to be installed one at each operating point (equipment) in the plant, but recently, with the expansion of automation, the number of operation switches has increased significantly. It tends to be reduced.

Next, an example of the configuration of a conventional plant monitoring and control device will be described with reference to FIG. 2, taking an atomic couplant as an example.

Various sensors (not shown) are installed in each part of the atomic couplant 201. Signals from these sensors are communicated to process computer 203 via signal 11202. This process computer processes various manually input process signals, edits them into a format that is easy for operators to understand, and outputs the edited signals to a signal line 204. The edited results are sent to the CR7 display device 206 via the signal line 204 and presented to the operator as an image. Examples of the format of images presented to operators include, for example, drawings showing the connection relationships and configurations of plant piping and equipment, and methods that present the measured values of process quantities for each part in the form of numbers or per charts. be.

On the other hand, the operation switch 207 is installed for the operator to give operation instructions, and its function is not only to operate the plant but also to switch the screen displayed on the CR7 display device 206. It also includes.

An operation signal from the operation field switch 207 is transmitted to the process computer 203 via a signal line 208. This process computer determines the contents of the received operation signal,
In the case of a screen switching request, data to that effect is sent to the signal line 204, and in the case of a plant operation request (particularly when it becomes a progress instruction signal for a breakpoint in an automated plant), an operation signal is sent out from the signal line 202.

Note that this example is for an automated plant, and all operation signals from the operation switch 207 are sent to the process computer 203.
Although this is not always the case, some of the signal lines 208 may be coupled directly to the plant.

With a plant monitoring and control device configured like this, during normal operation, even in large-scale plants, data on the process quantities of each part of the plant can be centrally monitored using a CRT display device installed in the control panel, and the number of operation switches is reduced. is also limited, so
It can be operated by one operator. In addition, the size of @Goban has been significantly reduced so that it can be operated by one person, and the number of CRT display devices installed there is also limited to the number that can be monitored by one person.

However, the number of items to be monitored increases when something abnormal occurs in the plant or during periodic plant inspections (hereinafter referred to as regular inspections), and the number of personnel who enter the central control room and monitor and operate the control panel also increases. do. For example, during periodic inspections, a large number of workers sometimes go to the site where plant equipment is installed, conduct inspections to confirm its functions and performance,
Tests are carried out and the results are displayed on the CRT on the control panel in the central control room.
As the work progresses, they will communicate with the operator who monitors them using the display device via telephone or paging, and confirm the details. In this way, as the number of workers working at the site increases, the number of operators working (monitoring) at the central control panel also increases accordingly.

In this way, the plant monitoring and control system, which has a compact $i1m board and a reduced number of display devices installed on it, can be used in large numbers at any one time, such as when something abnormal occurs in the plant or during periodic inspections. It is extremely difficult to use in situations where operators are monitoring and operating the control panel using the control panel.
- Sometimes it becomes necessary to limit the number of people who can use the control panel.

Therefore, under the above-mentioned circumstances, the work efficiency of workers in the plant will be significantly reduced. Particularly in cases where periodic inspections are required at least once a year, such as in the case of nuclear couplers, shortening the period of periodic inspections is a major requirement from an economic point of view, so a decrease in work efficiency can be a serious problem. It becomes a drawback.

(Issue 11 to be solved by the invention) As explained above, in the conventional plant monitoring and control system having a compact control panel, when an abnormality occurs in the plant or when a periodic inspection is performed, , the number of monitoring items on the central control panel increases, and when a large number of operators use the display device on the central control panel at the same time, the work efficiency decreases significantly, resulting in a decrease in plant utilization rate and economic efficiency. A problem arose.

The present invention was made in consideration of this situation, and even when the number of people required to work in the central control room increases, such as when an abnormality occurs in the plant or during regular inspections, it is possible for many people to simultaneously monitor and operate the plant. The purpose of the present invention is to provide a plant monitoring and control device that can quickly carry out the work.

[Structure of the Invention] (Means for Solving the Problems) The plant monitoring and control device of the present invention includes a process computer that receives signals from various parts of the plant and processes these signals, and a process computer that connects the process computer via a signal line. are combined,
a central control panel equipped with one or more display devices that display the processing results and operation switches that generate plant operation signals; an expansion terminal connected to the process computer via a signal line; and the expansion terminal. and a movable expansion board equipped with one or more display devices connected via signal lines as necessary.

(Function) Compared to conventional plant monitoring and control devices, the plant monitoring and control device of the present invention configured as described above has an additional extension terminal connected to a signal line that transmits processing results of a process computer. This expansion terminal can be left as it is during normal operation, and can be used as a plant monitoring @ control device equipped with a compact #i4# panel.

On the other hand, when some kind of abnormality occurs in the plant or when performing periodic inspections, an expansion board with one or more display devices attached to the expansion terminal is connected, and the display device on the expansion board shows the processing results of the process computer. By displaying this information, it is possible to adequately respond even when a large number of operators are working at the same time.

(Example) Hereinafter, the present invention will be described in detail with reference to the drawings.

FIG. 1 shows an embodiment of the present invention, in which eight sensors (not shown) are installed in each part of an atomic couplant 101. The signal values obtained from these sensors are transmitted to the process computer 103 via the signal 81102.

The process computer 103 processes various input process signals, edits them into a form that is easy for operators to understand, and outputs them to a signal line 104. This editing result is sent to the CRT display full via a signal line 104.

6 and presented to the operator as an image. In this case, the format of the image presented to the operator is, for example, a drawing showing the connections between the plant's piping and equipment, or their configuration, with the measured values of process quantities for each part expressed in numbers, per charts, etc. There is a way to display it.

The operation switch 107 is installed to give operation instructions from the operator, and its functions include not only plant operation but also the function of switching the screen displayed on the CRT display [106]. There is. Operation switch 107
The operation signal from is transmitted to the process computer 103 via the signal line 108.

The process computer 103 determines the content of the received operation signal, and if it is a screen switching request (especially if it is a progress instruction signal for a breakpoint in an automated plant),
Signal line An operation signal is sent from the signal line 102.

On the other hand, the process computer 10 is on the central FG48 board 105.
An extension terminal 109 is provided that supplies a signal to the signal line i04 that transmits the processing result of step 3.
A movable expansion board 111 is detachably connected via the expansion signal line 110. Furthermore, one or more CRT display devices tl12 are installed on the movable expansion board 111, and are connected to the expansion signal line 110 and the expansion terminal 109.
It is coupled to a signal line 104 that transmits the output of the process computer 103.

In the plant monitoring and control device of the present invention configured as described above, during normal operation, no signal is supplied to the expansion terminal 109, and monitoring and operation are performed only by the central control panel 105.

On the other hand, when some abnormality occurs in the plant or when performing regular inspection, the movable expansion board 111 is moved and connected to the expansion terminal 109 via the expansion signal line 110.

By connecting the expansion board 111 to the central control board 105 in this manner, the processing results of the process computer 103 can also be displayed on the CRT display device 112 provided in the expansion board 111.

In the case of the embodiment shown in Fig. 1, three CRs are used during normal operation.
Operation is possible with a compact central control panel equipped with a T-display device, but if an abnormality occurs in the plant or when performing periodic inspections, or if the number of personnel monitoring the plant status increases, an expansion panel may be required. 111 and add two CRT display devices fl12 for monitoring, making it possible to monitor with a total of five devices.

As a result, during normal operation, only the compact till panel is in the central control room, and there are no other obstacles, so a wide work space can be secured and work efficiency can be improved. Furthermore, when an abnormality occurs in the plant or when regular inspections are performed, by connecting an expansion panel and increasing the number of CRT display devices for monitoring, it is possible to improve monitoring performance and prevent a decrease in work efficiency. Additionally, since the expansion board is movable, it can be moved freely to the required location, improving work efficiency.

Although one embodiment of the present invention has been described above, the present invention is not limited to this, and may be modified as follows.

(1) The above embodiment is for an automated plant, and all operation signals from the operation switch 107 are input to the process computer 103. However, in some cases, some signal lines 108 may be directly connected to the plant. You may also do so.

(2) In the above embodiment, the expansion terminal 109 and the expansion board 111
Although both of them show the case of one unit, the number is not limited to one, and a plurality of units may be provided as necessary. FIG. 3 shows a configuration example in which there are three expansion terminals 109 and three expansion boards 111.

(3) In the above embodiment, the expansion terminal 109 is connected to the central control panel 105.
This is a configuration example where the expansion terminal 10 is installed in
9 may be installed on the process computer 103 side.

(4) The expansion panel 111 may include not only the display device 112 but also some functions of the operation switch 107.

(5) The number and types of display devices 112 installed in the central control panel 105 and the expansion panel 111 are not limited to those in the above embodiments, and can be increased or decreased as necessary.

(6) The central control panel 105 may be composed of a plurality of control panels 105a, 105b, and 105c as shown in FIG. 113 indicates an operator. In this case, the central control panel 1
05a is a fixed type, and AM boards 105b and 105c on both sides
If it is made movable so that it can rotate relative to the central control panel 105a, as shown in FIG.
3a, 113b, and 113c can simultaneously monitor and operate the central control panel. 114 is the control panel 105a and 1
05b, a fixing device connecting between 105a and 105c is shown. In addition, as shown in FIG. 6, the central control panel 105
a may be fixed, and the control panels 105b and 105c on both sides may be movable along the rails 115.

(7) Although the above embodiments have been explained using a nuclear power plant as an example, the present invention is not limited thereto and can be widely applied to various large-scale plants.

[Effects of the Invention] As described above, according to the present invention, the central $I II is compact and highly operable during normal operation of the plant.
If a panel is provided and the number of operators to monitor increases, an expansion panel can be provided as needed to improve work efficiency.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an embodiment of the plant monitoring and control device of the present invention, and FIG. 2 is a block diagram of a conventional plant monitoring and control device.
FIGS. 3 to 6 are block diagrams showing other embodiments of the plant monitoring and control apparatus according to the present invention. 101.201... Atomic couplant 103.203... Process computer 105.205... Central control panel 105 a, 105 b, 105 c -...
Control panel 106.112.206...CR7 display device 1
07.207...Operation switch 109...Extension terminal 111...Movable expansion board 113.113
a, 113b, 113c. 113d... Operator 114... Fixed device 115... Rail

Claims (1)

[Claims] (1) A process computer that takes in signals from each part of the plant and processes these signals, and one or more display devices that are connected to this process computer via signal lines and display the processing results, and the plant. a central control panel equipped with an operation switch that generates an operation signal; an expansion terminal connected to the process computer via a signal line; and one or more units connected to the expansion terminal via a signal line as necessary. A plant monitoring and control device comprising a movable expansion panel equipped with a plurality of display devices.