JPH0464013A - Processing system for plant monitoring apparatus - Google Patents

Abstract

PURPOSE:To improve the operating efficiency of a plant by a method wherein the driving state of the plant is stored in a file of an assisting memory means, the present driving state is compared with the driving state stored beforehand, and the difference and reasons for the difference are clearly indicated. CONSTITUTION:The quantity of state of a plant detected by a data detecting part 1 is read into a data processing part 3 every constant cycle through a transmission line 2. A function push button is provided in an operator request part 4 so as to store the quantity of state of the plant when the operator makes a request, and data and the like operated in the processing part 3. When this push button is depressed, a request signal is transmitted via a line 5 connecting the request part 4 with the processing part 3 to the processing part 3. On the basis of the request signal, all the quantity of state of the plant at the subject time and, all the data and the like operated in the processing part are transmitted from the processing part 3 to an assisting memory device 8 through a transmission line 9, stored in a predetermined file, so that the present running state is compared with the running state stored beforehand and displayed at 7.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a plant monitoring device that is capable of monitoring the status of a plant using an output device such as a display device.

[Conventional technology] Conventionally, there has been a device of this type as shown in FIG.

In the figure, 1 is a data detection section on the plant side, 2 is a transmission line for data detected by the data detection section 1, 3 is a data processing section consisting of a microprocessor, etc., 4 is an operator request section consisting of a keyboard, etc., and 5 is a transmission line for data detected by the data detection section 1. A line 6 connecting the operator request section 4 and the data processing section 3
Reference numeral 7 indicates a transmission line for display data, and 7 indicates a data display section consisting of a display device.

Next, the operation will be explained.

The plant state quantities (analog signals and digital signals) detected by the data detection section 1 are read into the data processing section 3 via the transmission line 2 at regular intervals or according to certain events. The data processing unit 3 converts the read plant state quantities into engineering units normally used by the operator,
Store it in a predetermined memory. On the other hand, when the operator makes a request to display the data he/she wants to monitor from the operator request section 4, a request signal is transmitted via the line 5 connecting the operator request section 4 and the data processing section 3, and the data processing section 3 Determine what kind of display request was made. Based on this determination result, the data processing unit 3 extracts the data stored in the memory, edits it into a form that is easy for the operator to understand, and displays it on the data display unit 7 via the data transmission line 6. [Problems to be solved] Conventional plant monitoring equipment is configured and processed as described above, so it can only monitor the plant status at the time the operator requests it, and it cannot store the history of data from the past to the present in memory. However, even if this were to be displayed, only a series of data history from the past to the present could be monitored. In order to monitor the performance deterioration of plant equipment or deviation from the standard operating state of the plant, it is necessary to be able to easily compare the operating state at the start of plant operation or the standard operating state, etc. with the current operating state. However, there is a problem in that this cannot be easily done with conventional devices. Moreover, even if these comparisons could be realized in some way, the determination of the differences and the causes of the differences would largely depend on the experience of the operator.

This invention was made in order to solve the above-mentioned problems, and it makes it easy to compare the current operating state with the lapel state of the plant or any operating state.
The purpose of the present invention is to provide a monitoring device that facilitates plant operation by clearly indicating the differences and the factors behind those differences.

[Means for Solving the Problems] The processing method of the plant monitoring device according to the present invention includes an auxiliary storage means for storing the standard operating state of the plant or an arbitrary operating state as a file, and an auxiliary storage means for storing the standard operating state of the plant or any operating state, A standard operating state of a plant, comprising factor determining means for determining the cause of a difference between an arbitrary operating state and a current operating state.

Alternatively, any operating state may be stored in the file of the auxiliary storage means automatically or by manual request, and the previously stored operating state and the current operating state may be compared to clarify the difference and the cause of the difference. This is what I did.

[Operations] In this invention, the comparison of the standard operating state of the plant or any operating state with the current operating state makes it easy to understand the deterioration state of the plant's performance and the deviation from the standard operating state. By clarifying the differences between the two and the causes of those differences, even operators who do not necessarily have sufficient experience can make accurate plant operation decisions.

[Example code] Hereinafter, one embodiment of the present invention will be explained with reference to the drawings.

In FIG. 1, the processing contents of the data processing section 3 and the request contents of the operator request section 4 are different.
7 have the same equipment configuration, but include an auxiliary storage device 8 for storing the standard operating state of the plant or an arbitrary operating state as a file, and a data transmission line that connects this auxiliary storage device 8 and the data processing unit 3. 9 is added to the data processing unit 3, and a factor determination logic unit 10 is added to the data processing unit 3 to determine the cause of the difference between the standard operating state of the plant or an arbitrary operating state and the current operating state. Note that this factor determination logic unit 10 can be realized by applying AI technology that realizes a well-known expert system.

Next, the operation will be explained.

The plant state quantity detected by the data detection unit 1 is
The data is read into the data processing section 3 via the transmission line 2 at regular intervals or according to certain events. The data processing unit 3 converts analog quantities among the read plant state quantities into engineering units, and then stores them in a predetermined memory. Everything up to this point is the same as the conventional device.

The operator request section 4 has a function button for storing all the plant state quantities at the time of the operator's request and all the data including the calculated values processed by the data processing section 3 based on a certain period or an event. A button is provided. The above-mentioned function realized by operating this push button is herein referred to as a "snapshot" function. When this snapshot function is requested from the operator request section 4,
This request signal is transmitted via a line 5 that connects the operator request section 4 and the data processing section 3 and is transmitted to the data processing section 3. Based on this request signal, the data processing section 3 transmits all of the plant state quantities at that time and all data including the calculated values processed by the data processing section 3 to the auxiliary storage device 8 via the data transmission line 9. , and store it in a predetermined file. Since this memory file is provided so that the snapshot function described above can be executed multiple times, the operator can memorize the standard operating state or any arbitrary operating state of the plant. Additionally, in the data processing unit 3, logic is added to determine the plant state quantities read through the transmission line 2 and execute the same snapshot function as described above when, for example, a generator disconnection signal is input. Ba,
The plant operating status at the time of generator disconnection can be automatically memorized without an operator request.

On the other hand, regarding data display requests, the operator request section 4 is provided with a function push button that can display any one of the plant operating states stored by the snapshot function, and when a request is made using this push button function, the data processing section 3 extracts the requested plant operating state from the memory file of the auxiliary storage device 8, transmits it via the transmission line 9, edits it in a form that is easy for the operator to understand, and sends it to the data display section 7 via the transmission line 6. to be displayed. Furthermore, at this time, the data processing section 3 can add the processing results of the factor discrimination logic section 10 that discriminates the difference from the current operating state and the cause of the difference to the above display and display it on the data display section 7. . The operator request unit 4 also has a function that allows the user to view the contents of the memory file in the auxiliary storage device N8.

Although an embodiment of a power generation plant has been described above, the present invention is applicable not only to power generation plants but also to other process fields where comparative monitoring is required.

In addition, although a display device is used as an output device, it is not limited to a display device, but also a recording device (such as a printer).
It can also be output.

By the way, Japanese Unexamined Patent Publication No. 64-47911 discloses an invention called a "process display device," but this prior art collects data by registering it in advance so that data before a trend display request can be displayed as a trend. The present invention is different in that it collects not only trend data but also all data on process quantities and calculated values, and analyzes differences between that data and current data, making it easier to improve plant operation. It's convenient.

Furthermore, Japanese Patent Application Laid-open No. 166697/1983 discloses an invention called an "abnormality monitoring device," but this prior art
This is a monitoring device that displays plant abnormality information with information for analyzing it, and the present invention can display not only abnormality information, but also the difference from the standard operating state before the abnormality and information on its causes. It can also be used during normal operation without abnormalities.

Also, JP-A-60-. Publication No. 205397 discloses an invention called "Nuclear Power Plant Condition Monitoring System," but this prior art is an effective display for monitoring the balance of about six major parameters in normal operating conditions. The present invention handles all data, not only the main parameters, but also process quantities and calculated values, and not only displays the difference between the two modes, but also displays the information that causes the difference. Since it can be displayed, it is effective in supporting decisions.

Furthermore, Japanese Patent Application Laid-open No. 10119/1983 discloses an invention called a "plan monitoring system," but this prior art is capable of storing past data in addition to displaying the current status, and allowing it to be read and displayed at any time. 1. The present invention is capable of displaying not only past data, but also information on the causes of differences, current values, standard values, or past values to be compared. The device performs this process, and the results are displayed on the screen, making it effective for driving support.

[Effects of the Invention] As described above, according to the present invention, it is possible to easily compare the standard operating state of the plant or an arbitrary operating state with the current operating state, so it is possible to monitor performance deterioration of plant equipment, Alternatively, it is effective in monitoring deviations from standard operating conditions, and by clarifying the differences in the operating conditions and the causes of those differences, it has the effect of supporting efficient plant operation.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a block diagram showing a conventional plant monitoring device. 1 is a data detection section, 3 is a data processing section, 4 is an operator request section, 7 is a data display section (data output section), 8
10 is an auxiliary storage device (auxiliary storage means), and a factor determination logic unit (factor determination means). In addition, in the figures, the same reference numerals indicate the same or equivalent parts.

Claims (1)

[Claims] Plant state quantities detected by a data detection unit on the plant side are input, predetermined data processing is performed based on a request from an operator request unit, and the resultant data is output to an operator via a data output unit. A plant monitoring device equipped with a data processing unit includes an auxiliary storage means for storing the standard operating state of the plant or an arbitrary operating state as a file, and a storage means for storing the standard operating state or arbitrary operating state of the plant and the current operating state. and a factor determining means for determining the cause of the difference, and stores the standard operating state or any arbitrary operating state of the plant in the file of the auxiliary storage means automatically or manually upon request, and stores the pre-stored operating state and the current operating state. A processing method for a plant monitoring device characterized by comparing states and clarifying the differences and the causes of the differences.