JPH0685527B2 - Computer system for power plant monitoring - Google Patents

Description

Description: TECHNICAL FIELD OF THE INVENTION The present invention relates to a power plant monitoring computer system for monitoring a plant state of a power plant.

[Technical background of the invention and its problems] When operating a complex and large-scale plant such as a power plant, it is important to always know the state of the plant correctly. A plant monitoring computer system has been developed in which various kinds of information are input to a process computer, which is processed to promptly display information desired by an operator on various screens of a color CRT.

However, in a power plant, one set of such a computer system for plant monitoring is required for each power generation unit (hereinafter, referred to as a unit), and the cost and facility space of those facilities are large in the entire power plant including a plurality of units. Has become.

In the past, when it is desired to improve or add the function of a certain facility, it is possible to replace it due to the capacity limit of the conventional facility or move it to secure an additional space, but it requires a lot of labor and Even in such a case, it is necessary to repeat the same expansion after several years, and as a result, the monitoring performance cannot be improved, which may cause a problem in plant operation safety.

[Object of the Invention] The present invention provides a computer system in a power plant having a plurality of units, which can easily improve the monitoring function as a plant without extensively changing and modifying the existing plant monitoring process computer. It is in.

SUMMARY OF THE INVENTION Therefore, the present invention provides an interface device for each machine that inputs / outputs a necessary process input to / from a process input device, a display device, and the like, and each interface device and a set for centralized processing. By combining the computer system with the optical data way system at high speed, it is possible to improve the monitoring function without separately providing a computer system for additional functions for each unit. .

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

The first unit interface system 11 is an interface processor 21, a process input device 31, a CRT.
The interface processor 21 comprises a control device 41.
Includes the operation status of the pump of Unit 1 91, the contact points corresponding to the temperature of the equipment, the process input device 31 that reads the process data such as analog and directly writes it to the main memory of the interface processor 21, and the screen such as the system diagram of the plant. Is connected to a CRT 51 for displaying and outputting, and a CRT control device 41 for controlling a keyboard 61 that receives a screen display request from an operator or the like.

The optical data way 70 is composed of an optical fiber, and is connected to a data way station 81 of No. 1 machine, a data way station 8n of No. machine No. n, and a data way station 80 connecting the plant computer 100, respectively, and are installed in the plant.

The data way stations 80, 81 ... 8n are connected to the interface processors 21 to 2n and the plant computer 100, respectively, to control the flow of data in the data way, and to transfer data between the main memory between each computer and processor. Has transfer and interrupt generation functions.

FIG. 2 shows the unit interface system 11 of FIG.
And the details of the processing of the plant computer 100 are shown (for convenience of explanation, the processing of the first machine is shown as an example).

The interface processor 21 has an input data section 211 in which process data from the plant input device 31 is stored,
The entered process data is periodically transferred to the plant computer 10
Process data transfer request means for requesting the data way station 81 to transfer 0 to the input data section 1001
212, The operator's screen display request from the keyboard 61 is converted into a reception screen number and stored in the display screen number section 213, and at the same time, the request is sent to the data way station 81 and the screen number section 1002 in the plant computer 100 is displayed. Screen request accepting means 214 for transferring the data, and display request means 216 for editing the process data corresponding to the screen number in the display data section 215 transferred from the plant computer 100 as the display data of the CRT 51 and making an output request to the CRT control device 41. It consists of and.

The plant computer 100 uses the process data of the input data section 211 to perform a process of determining whether the process state is normal or abnormal, and sets the result in the unit data section 1003.
The process data value corresponding to the predetermined display data corresponding to the screen number in 1002 is taken out and the display data unit 10
The display data collecting means 1006 is set to 05 and makes a transfer request to the display data section 215 in the interface processor 21.

Fig. 3 shows a simple example of screen A used when monitoring the plant. Steam generated from the reactor turns the turbine to generate electric power by the generator, steam from the turbine is cooled and becomes water again. It is a system diagram screen which shows returning to a nuclear reactor.

In this example, the reactor water level is 900 mm, the main steam flow from the reactor is 5400 T.
/ H, steam flow to turbine 4500T / H, total feed water flow 5400T /
H, showing the operation of the water supply pump.

FIG. 4 shows an arrangement example of the respective devices in FIG. When there are n units of power plants from Unit 1 to Unit n in a certain plant, the CRTs 51 to 5n and keyboards 61 to 6n for monitoring the plant are arranged in the central control room inside each Unit building 111 to 11n. The other unit interface systems and the data way stations 81 to 8n are installed in the process computer room near the central control room. The plant computer 100 can be installed in a place apart from the building of each unit, such as an office building or another new facility such as a plant general control building 1000.

With the above configuration, an example will be described in which the operator selects and displays the plant system screen A as shown in FIG. 3 on the CRT 51 using the keyboard 61.

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 a fixed cycle (for example, 500 ms, 1 second cycle). The process data transfer request means 212 requests the data way station 81 to transfer from the input data section 211 to the input data section 1001. As a result, the data way station 81 transfers the contents of the input data section 211 as a data way to the input data section 1001 via the data way station 80. This transfer request is made at a predetermined cycle.

Although it is possible to configure the data way by a coal transfer method such as a modem, it is possible to store a large amount of data (about several thousand points of input) like a power plant due to the processing of the transmission procedure and the transmission capacity (up to 48k6ps). The ability to monitor is insufficient, and as a result, it is necessary to have a monitoring function equivalent to the unit interface system, and it is not possible to solve the current problem.

Thus, the reactor water level data transferred to the plant computer 100, the unit monitoring means 1004, it is determined whether or not in the normal range, the process data and its determination result unit data in a predetermined order. Department
It is set to 1003. In the example of reactor water level, process data,
900 mm compared with the range of 1000 mm, 800 mm etc.
In the case of, it is determined to be a normal value.

The display data collection unit 1006 displays the screen of the display, in this example "REACTO
The process data to be displayed included in “R SYSTEM 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 unit 216 converts the process data of the display data unit 215 into a format to be displayed on the CRT 51, and makes a display request to the CRT control device 41.

In this way, the reactor water level data 900 mm is displayed and output as a bar chart as numerical values as shown in FIG. Also, the display color is a normal value, so it is displayed as green. Since the display conversion processing and the like corresponding to these screens are known, detailed description of the present invention is omitted.

The above example is for the first machine, but 2 to n
The same applies to the processing of the No. units, and thus it is possible to carry out general monitoring of the units of the plurality of No. units.

In the above embodiment, the example in which only one set of the plant computer 100 is used is shown, but a redundant configuration such as duplication may be adopted, and the optical data way 70 may be easily made redundant.

[Effects of the Invention] As described above, according to the present invention, since the unit interface system, the optical data way, and the plant computer are used in each unit, a large-scale calculation in each unit becomes unnecessary. , Especially in an existing plant, many functions can be added without changing and modifying the existing unit monitoring process calculator,
The monitoring function can be easily improved. As a result, the plant can be operated more safely.

In addition, it is possible to reduce the equipment installed in each unit, it is possible to reduce the space of the building in the power plant, and it is possible to contribute to the overall cost reduction.

Further, since the present invention uses the optical data way, only one cable to the plant computer is required, and the noise resistance, which is a merit of the optical cable, has a great effect. In addition, by connecting units and performing centralized monitoring of process data, process inputs (for example, house boiler pressure value) that were conventionally input independently for each unit can be used throughout the device. , It will also be possible to reduce the number of sensors for capturing process inputs.

Further, the configuration of the present invention facilitates various management functions.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a power plant monitoring computer system showing an embodiment of the present invention, FIG. 2 is a detailed configuration diagram of a unit interface system and a plant computer of FIG. 1, and FIG. FIG. 4 is a CRT display screen view showing an example, and FIG. 4 is a layout view showing an example of each device of FIG. 11 …… Unit interface system, 21 …… Interface processor, 31 …… Process input device, 41
…… CRT controller, 51 …… CRT, 61 …… Keyboard, 70…
… Optical data way, 81 …… Data way station,
100 …… Plant computer, 211,1001 …… Input data part, 2
12 ... Process data transfer requesting means, 213 ... Display screen number section, 214 ... Screen request receiving means, 215,1005 ... Display data section, 216 ... Display requesting means, 1002 ... Screen number section, 1003 ... … Unit data section, 1004 …… Unit monitoring means, 1006 …… Display data collecting means.

Claims (1)

[Claims] 1. A power plant monitoring computer system for monitoring a power plant composed of a plurality of power generating units, comprising a display device installed for each of the plurality of power generating units and displaying monitoring information of each power generating unit. A unit interface system, a set of general-purpose computers that create monitoring information in each of the unit interface systems, and an optical dataway that connects the unit interface systems and the general-purpose computer via each dataway station. The unit interface system includes a process input device for inputting process information from the power generation units, a first input data unit for storing process information input by the process input device, and the data way station. To Process data transfer requesting means for issuing a request to transfer the process information of the first data input section to the general-purpose computer, and an operator screen display request converted into a reception screen number, and the screen for the data way station. A screen request accepting means for issuing a request to transfer a number to the general-purpose computer, and a first display data section for storing the display data transferred from the general-purpose computer,
A display requesting means for displaying the data of the first display data section on the display device; and the summarization computer stores a second input data section for storing the process information transferred from the interface processor, A unit monitoring means for determining whether the process status is normal or abnormal by using the process information stored in the second input data section, a unit data section for storing the determination result of the unit monitoring means, and the unit interface. Display data for fetching display data corresponding to the screen number transferred from the system from the unit data section, storing it in the second display data section, and issuing a request to the data way station for transfer to the interface processor. A power plant monitoring calculation comprising a collecting means Machine system.