JPS61212938A - Computer system for power generating plant supervision - Google Patents

Abstract

PURPOSE:To improve supervisory functions by using an optical data way system to couple a process input device, an interface device at each set and a computer system at high speed. CONSTITUTION:A unit interface system 11 of No.1 machine 91 consists of an interface processor 21, a process input device 31, and a CRT controller 41, and a CRT controller 41 controlling a CRT 51 and a keyboard 61 displaying a drawing such as a system diagram of the plant and the process input device 31 of the No.1 machine 91 are connected to the processor 21. An optical dataway 70 connects respectively a dataway station 81 of the No.1 machine comprising optical fibers, and the dataway station 80 connecting the data way station 8n of the No.n machine and the plant computer 100 and is installed in the plant. Processors 21-2n and the plant computer 100 are connected respectively to the stations 80, 81-8n.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a power plant monitoring computer system that monitors the plant status of a power plant.

[Technical background of the invention and its problems] When operating a complex and large-scale plant such as a power generation plant, it is important to always accurately understand the status of the plant. A plant monitoring computer system has been developed in which various types of information are input into a process computer, the information is processed, and the information desired by an operator can be immediately displayed on various screens of a color CRT.

However, in a power generation plant, one set of such a plant monitoring computer system is required for each power generation unit (hereinafter referred to as a unit).

In an entire power generation plant consisting of multiple units, the cost and installation space for these equipment is large.

In addition, traditionally, when you want to improve or add functionality to a certain piece of equipment, you can consider replacing it due to the capacity limit of the existing equipment or relocating it to secure expansion space, but it requires a lot of effort, and even if it is not possible to Even in such cases, it would be necessary to repeat the same expansion several years later, and as a result, monitoring performance could not be improved, which could pose a problem in terms of plant operation safety.

[Purpose of the invention] The present invention provides a computer system that can easily improve the monitoring function of a power plant having multiple units without making extensive changes or modifications to the existing plant monitoring process computer. It is in.

[Summary of the Invention] Therefore, the present invention provides a process input device that takes in necessary process inputs, an interface device for each machine that performs input/output to a display device, etc., and a set of interface devices for each interface device and centralized processing. The system is characterized by high-speed data linkage with the computer system using an optical dataway system, thereby improving the monitoring function without having to provide a separate computer system for each machine for additional functions. .

[Embodiment of the Invention] FIG. 1 shows an embodiment of a computer system for comprehensive plant monitoring (hereinafter abbreviated as a plant computer) according to the present invention.

The unit interface system 11 of the first machine includes an interface processor 21 and a process input device 31.
, and a CRT control device 41.The interface processor 21 has a process for reading process data such as the operation status of the pump of the No. 1 unit 91, contacts corresponding to the temperature of the equipment, and analog process data and writing them directly to the main memory of the interface processor 21. An input device 31 and a CRT 51 for displaying and outputting a screen such as a plant system diagram. A keyboard 61 that receives screen display requests from operators, etc. is connected to a CRT control device 41 that controls the optical data way 70. The optical data way 70 is made of optical fiber and is connected to the data way station 81 of the first machine, the data way station 8n of the n machine, and the plant. Connecting the data way stations 80 to which the computers 100 are connected,
It is installed inside the plant.

The data way stations 80, 81...8n each connect the interface processors 21 to 2n and the plant computer 100, and control the flow of data within the data way, as well as the main memory between each computer and processor. It has the function of generating 1 interrupt during data transfer.

Figure 2 shows the unit interface system 1 in Figure 1.
1 and the details of the processing of the plant computer 100 (for convenience of explanation, the processing of the No. 1 machine is shown as an example).

Interface processor 21 is process input device 3
Input data section 21 in which process data from step 1 is stored
1, process data transfer request means 212 for periodically requesting the data way station 81 to transfer input process data to the input data section 1001 of the plant computer 100; The reception unit converts the operator's screen display request from the keyboard 61 into a screen number, stores it in the display screen number section 213, and sends a request to the data way station 81 to input the screen number to the screen number section 1002 in the plant computer 100. Transfer screen request receiving means 214
．． Display data section 2 transferred from the plant computer 100
Process data corresponding to the screen number in 15 is displayed on the CRT.
51 and a display requesting means 216 for editing the data and requesting the output to the CRT control device i41.

The plant computer 100 uses the program data in the input data section 211 to determine whether the process status is normal or abnormal, and the unit monitoring means 1004 and the unit data section 10 set the result in the unit data section 1003.
03, a process data value corresponding to the screen number in the screen number section 1002 and corresponding to predetermined display data is taken out and set in the display data section 1005, and a display requesting transfer to the display data section 215 in the interface processor 21. data collection means 1006.

Figure 3 shows a simple example of Screen A used when monitoring a plant. Steam generated from a nuclear reactor rotates a turbine and electricity is generated by a generator. The steam from the turbine is cooled and becomes water again. This is a system diagram showing the process of returning to the reactor.

In this example, the reactor water level is 900++m, the main steam flow rate from the reactor is 5400T/I (and the steam flow rate to the turbine is 4500T/I).
/H1 total water supply flow rate 5400T/H1 water supply pump operation status is shown.

FIG. 4 shows an example of the arrangement of the devices shown in FIG. 1. When a certain plant has n units of power plants from No. 1 to No. Other unit interface systems and data way stations 81
~8n are each installed in the process computer room near the central control room. The plant computer 100 can be installed in a separate location from the building of each machine, such as in an office building, or in a new plant management building 1000, for example.

An example will be described in which, with the above configuration, a plant system screen A as shown in FIG. 3 is selected and displayed on the CRT 51 by an operator using the keyboard 61.

The reactor water level process data, along with other process data,
As shown in FIG. 2, the data is input to the input data section 211 via the process input device 31 at regular intervals (for example, at intervals of 500 m and 5.1 seconds). The process data transfer request means 211 requests the data way station 81 to transfer the input data part 2 to the data way station 81.
11 makes a transfer request to the input data section 1001.

As a result, the data way station 81 transfers the contents of the input data section 211 to the input data section 1001 via the data way station 80 via the data way. This transfer request is made at a predetermined period.

Here, it is possible to configure the dataway using a transmission method such as a modem, but the processing of the transmission procedure, the transmission capacity (
Maximum 48 to 6 ps) allows for large quantities (
The capacity is insufficient to monitor data (approximately several thousand input points), and as a result, it is necessary to provide a monitoring function equivalent to that of a unit interface system, which does not solve the current problem.

In this way, the reactor water level data transferred to the plant computer 100 is judged by the unit monitoring means 1004 as to whether it is within the normal range, and the process data and the judgment results are stored in the unit data in a predetermined order. section 1003.

In the example of reactor water level, process data, 101000n, 8
The abnormal range such as 00nn is compared with 900mm.
In this case, the value is determined to be normal.

The display data collection unit 1006 displays the display screen, in this example, "R".
The process data to be displayed included in the EACTORSYSTEM DISPLAY''' is collected from the unit data section 1003, requested to the data way station 80, and transferred to the display data section 215.

The display data creation section 216 converts the process data in the display data section 215 into a format to be displayed on the CRT 51, and issues a display request to the CRT control device 41.

In this way, the reactor water level data of 900 m is displayed as a numerical value in the form of a par chart as shown in FIG.

Also, the display color is green because it is a normal value. It should be noted that since display conversion processing and the like corresponding to these screens are well known, a detailed explanation of the present invention will be omitted.

The above example was shown for Unit 1, but 2 to n
The same applies to the processing of the machine, and in this way it is possible to comprehensively monitor units of a plurality of machines.

In the above embodiment, only one plant computer 100 is used, but a redundant configuration such as duplexing may be used, and the optical data way 70 can also be easily made redundant.

Further, in the above embodiment, the CRT display was explained as an example, but it goes without saying that other peripheral devices, such as a typewriter 2 audio output, etc., can be similarly installed in the unit interface system.

Further, although the explanation has been given as monitoring for each unit, input processing in a separate building within the plant, such as a waste treatment building, etc., can also be considered, and it is possible to comprehensively monitor dispersed buildings and equipment in the plant.

[Effects of the Invention] As described above, according to the present invention, each unit uses a unit interface system, an optical dataway, and a plant computer, which eliminates the need for large-scale calculations in each unit. Especially in an existing plant, many functions can be added without changing or modifying the existing unit monitoring process computer, and the monitoring function can be easily improved. As a result, the plant can be operated even more safely.

Furthermore, it is possible to reduce the number of equipment provided in each unit, and the space of the building within the power plant can be reduced, contributing to overall cost reduction.

Furthermore, since the present invention uses an optical dataway, only one cable is required to connect the plant computer, and the noise resistance, which is an advantage of optical cables, is also very effective. In addition, by connecting units and centrally monitoring process input data, process inputs that were previously input independently for each unit (for example, house boiler pressure values, etc.) can now be used throughout the equipment. Therefore, it is possible to reduce the number of sensors for capturing process input.

Furthermore, the configuration of the present invention makes it easy to perform various management functions.

[Brief explanation of drawings]

Fig. 1 is a block diagram of a power plant monitoring computer system showing an embodiment of the present invention, Fig. 2 is a detailed block diagram of the unit interface system and plant computer shown in Fig. FIG. 4 is a diagram showing an example of a CRT display screen, and FIG. 4 is a layout diagram showing an example of each device shown in FIG. 11...Unit interface system, 21.
...Interface processor, 31...Process input device, 41...CRT control device, 51...CR
T, 61... Keyboard, 70... Optical data way, 81... Data way station, 100...
Plant computer, 211.1001... Input data section, 212... Process data transfer request means, 213.
...Display screen number section, 214...Screen request reception means,
215°10o5...1 display data section, 216...display request means, 1002...screen number section, 1003...
・Unit data department. 1004...Unit monitoring means, 1006...Display data collection means. (7317) Agent: Patent Attorney Noriyuki Chika (
1 other person)

Claims (1)

[Claims] In a power generation plant monitoring computer system that monitors the status of each power generation unit by inputting necessary process information from each power generation unit, processing it, and displaying it on each display device, each power generation unit each unit interface system equipped with a display device installed at each unit and displaying monitoring information of each power generation unit; a set of total utilization calculators that create monitoring information for each of these unit interface systems;
An optical dataway that connects each of the unit interface systems and a total utilization computer is provided, and the process information from each of the power generation units is centrally processed by the total utilization computer, and the created monitoring information of each power generation unit is transmitted to each of the units. A power plant monitoring computer system characterized by displaying output on a display device of an interface system.