JPH11219208A - Automatic plant table generating device for automating with computer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To unite and unify methods for generating a computer automating plant table and a test procedure document and to execute efficiently maintenance work by automatically developing computer control logic to the plant table at the time of using th plant table for programming the computer control logic. SOLUTION: When computer control logic is extended to the plant table through the use of a logic data base 1001, it is extended by division into two stages. In the first stage, the extension is executed in breakpoint(BP) logic 1002, operation terminal logic 1003 and composite condition logic 1004 from the logic data base. In the second stage, the plant table such as an operation terminal output table 1006, an operation timing management table 1007 and a PB console management table 1008 is generated through the use of respective kinds of logic 1002-1004 which are extended in the first stage and BP basic logic 1005. A logic name is substrated from operation terminal logic data in the automatic generation of test procedure. Then, a timing conduction, mode setting, output information and a completion conduction are respectively extended.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a computer automation system for starting and stopping a plant using a plant table.

[0002]

2. Description of the Related Art Conventionally, the creation of a plant table required for computer automation of a plant is usually performed manually by a skilled engineer in accordance with a method of converting control logic to a plant table, sharing work. In addition, the created plant table was not uniform, and the quality often depended on the working engineers. In addition, when the plant table is modified at the request of the customer or the like, unless the engineer corrects the logic diagram correctly, the plant table and the logic diagram have the potential to be inconsistent.

[0003]

The problems to be solved at this time are the following three problems.

(1) A method for preparing a computer automation plant table and a test procedure manual is unified.

(2) The quality of the computer automation plant table and the test procedure manual are made uniform.

(3) Efficiency and quality improvement of maintenance work of a plant table for computer automation and a test procedure manual.

[0007]

In order to achieve the above object, according to the present invention, a control logic is provided by a method of sequentially inputting a logical expression or the like to a personal computer in accordance with a predetermined format. A function that automatically expands a plant table from a database by a computer,
It has a function to automatically create test procedure manuals from the logic database.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows the overall configuration of a control system in a thermal power plant.

The thermal power plant includes a main engine such as a boiler 101, a turbine 102, and a generator 103, and a BFP 104 (boiler feed pump) and an FFP 104 operated in conjunction therewith.
Many auxiliary machines such as DF105 (indentation ventilator) and IDF106 (induction ventilator), and various control devices for adjusting and controlling these (automatic plant control device 107, automatic mill burner control device 108, main turbine EHC device 109, etc.)
The unit computer 110 performs high-speed data transmission of a large amount of information by connecting to these control devices 107, 108, and 109 via a high-speed network.

The unit computer, which has a role of supervising and controlling the entire plant including the control devices 107, 108, and 109, plays a general role of a unit that monitors, records, and controls the power generation unit, and Monitor and control the control device that directly controls the operation terminals of the equipment.

FIG. 2 shows an automatic function of a computer of the thermal power plant. When the plant is started, the functions of the unit computers can be roughly classified into automatic control and start / stop schedule calculation functions.

The automatic control outputs a control command signal 203 to the apparatus 201 or the individual operation control panel 202 to monitor the entire plant. The start-up schedule monitoring function performs the parallel operation at the time specified by the central power station, so it estimates the expected start-up time and the plant state at the time of turbine start-up by calculating when to start the plant start-up. The operation parameters are calculated to obtain the rotation speed holding time and the rate of increase in speed.

The control function performs a series of automation operations in the plant start-up process and the plant stop process, at a major device operation point (B).
P: breakpoint), breakpoint progress monitoring processing 204, breakpoint operation progress monitoring processing 205, individual operation processing 206, control output processing 203
, And realizes optimal automatic operation while monitoring changes in plant conditions at that time in real time.

A computer control logic diagram and a plant table are required to create a program for executing these control functions. There are breakpoint logic diagrams, operation logic diagrams, and complex condition logic diagrams in the logic diagram. The breakpoint logic indicates the start timing of the breakpoint and the pre-operation condition. In the operation logic, the operation timing condition and operation when each operation is performed The precondition, post-operation confirmation condition, and abnormality monitoring during operation are represented. The complex condition logic is a combined plant condition obtained by combining several plant conditions, and represents a condition commonly used by each logic. The plant table is one in which the computer logic diagram is made more rigorous, and the processes related to the man-machine interface are added and described. The plant table is composed of ten types of tables, and the configuration is shown in FIG.

For each table, there is a program that decodes the described information and executes a process according to the described content. These plant tables store the plant state quantity immediately when the plant state changes. Is selected and activated, and processing is performed in accordance with the description. FIG. 4 shows the functions and features of the main components of the plant table.

An automation program exists for each plant table. The program decodes the contents described in each table and executes a process according to the contents. For the purpose of improving the productivity of this automation program, a function (IPG: Intelligent Program Generator) for automatically generating a program from a plant table has been developed, and is exerting its power in the design and production of a thermal power plant automation program.

In addition, the existing IPG has a function of generating an automation program directly from a plant table source, and a function of displaying a plant table on a CRT and easily modifying the screen from the screen in the adjustment at the time of the simulation test and the automation test in the hall. It is equipped with and is effective.

In the conventional method, as shown in FIG. 5, a BP logic, an operation terminal logic, and a complex condition logic are created from a draft version by a planning department, and these are CAD-input, and the computer control logic on paper is approved by a customer. The diagram was handed over to the computer design department, who created a plant table manually based on the computer control logic diagram and input it to the actual machine. Similarly, a test procedure manual showing operation procedures for a simulation test has been manually created from a computer control logic diagram. In the present invention, as shown in FIG. 6, what has been passed from the conventional planning department to the computer design department as a drawing is passed by FD or transmission as a computer control logic database, and this logic database is automatically converted to a plant table. Is done. Similarly, the test procedure manual is created by the test procedure manual automatic creation function from the computer control logic database.

A method for automatically generating a plant table (new I)
PG) is shown in FIG.

The functions of the new IPG are classified as follows.

Computer logic database creation function Plant table automatic creation function Test procedure manual automatic creation function Each creation method will be described below.

FIG. 8 shows a method for creating a computer logic database.

After the computer logic database is created and started,
A main menu is displayed as shown in (1) of FIG. 8, and a logic input is selected from the main menu.

A logic input item screen shown in (2) of FIG. 8 is displayed, and one of BP, operation terminal, and complex condition is selected from this screen, and a logic number to be created is input. A logic input screen is displayed as shown in (3) of FIG. 8, and a logic name, a type, a condition name, a conditional expression, a logical operation expression, and the like are input. FIG. 9 shows an example of the logic database created as a result.

In the creation of a logic diagram, when a similar logic diagram is created, the data of the logic diagram is copied, and as a result, a function to shorten the logic diagram creation time is provided. Also, once a logic diagram is created, if a condition that has been corrected due to a customer request or an entry error has been added or deleted, the line is currently out of line, and the logic diagram must not be manually modified each time. However, in the present invention, when a line is changed, there is a function for simultaneously changing a logical expression, so there is no need for correction. Can be reduced.

FIG. 10 schematically shows a method of automatically generating a plant table from a computer control logic database for automatically generating a plant table. Using the logic database 1001 to develop the data into a plant table, the data is developed in two stages as shown in FIG. In the first stage, BP logic 1002, operation end logic 1003,
Expanded to the complex condition logic 1004, and in the second stage, those developed in the first stage 1002, 1003, 1004 and B
Using the P basic logic 1005, the operation terminal output table 100
6, a plant table such as an operation timing management table 1007 and a BP console management table 1008 is created.

Automatic Test Procedure Document Generation Function An example of an automatic test procedure document generation procedure is shown below and in FIG.

1. The logic name 1101 is substituted from the operation side logic data (in the figure).

2. Expand T (1102) (timing condition). The column of the plant state is drawn using logical expression data (in the figure).

3.1103: OC- (mode setting) is developed (in the figure).

4.1104: OUT- (output information) is developed (in the figure).

5.1105: Expand C- (completion condition) (in the figure).

[0034]

By automatically generating a plant table and a test procedure manual from a logic database, it is possible to eliminate the potential of a conversion error from a logic diagram to a plant table and a test procedure manual, thereby improving reliability.

By automatically generating the plant table and the test procedure manual from the logic database, the conversion time is eliminated, and only the printing time and the check time are required, thereby greatly reducing the work time.

When the plant table is changed, the logic database is also changed. This eliminates the time required to correct the logic diagram when the design is changed due to a customer request or the like. Conventionally, the logic diagram has been corrected manually. The potential for entry errors due to the above has been eliminated, and reliability has been improved.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing an entire automation system of a thermal power plant according to an embodiment of the present invention.

FIG. 2 is a diagram showing the role of the automation program of FIG.

FIG. 3 is a flowchart showing a configuration of a plant table according to the present invention.

FIG. 4 is a diagram showing a function comparison table of a plant table of the present invention.

FIG. 5 is a configuration diagram showing a conventional control program generation method of the present invention.

FIG. 6 is a configuration diagram showing a control program generation method using a new IPG of the present invention.

FIG. 7 is a configuration diagram showing the entirety of a new IPG of the present invention.

FIG. 8 is a diagram showing a computer control logic database creation method according to the present invention.

FIG. 9 is a diagram showing a BP logic input screen and a file configuration according to the present invention.

FIG. 10 is a diagram showing a control program expansion method according to the present invention.

FIG. 11 is a diagram showing an example of creating a test procedure manual according to the present invention.

[Explanation of symbols]

101: boiler, 102: turbine, 103: generator,
104 BFP, 105 FDF, 106 IDF, 10
7 Automatic plant control device, 108 Automatic mill burner control device, 109 Main turbine EHC device, 110 Unit calculator, 201 Automatic control device, 202 Individual operation control panel, 203 Control output, 204 BP progress monitoring process , 205: BP operation / progress monitoring processing, 206: individual operation processing, 501: computer control logic diagram, 502: input work, 503: plant table, 504: real machine, 5
05: Test procedure document, 601: Computer control logic database, 602: Plant table source, 603
Test procedure book, 701: Computer logic database,
702: Automatic generation of plant table, 703: Automatic generation function of test procedure manual, 801: Main menu, 802 ...
Logic input, 803 BP, 804 operation terminal, 805 ...
Compound condition, 901, logic name, 902, type, 90
3: Condition name, 904: Conditional expression, 905: Logical operation expression,
1001 ... computer control logic database, 1002
... BP logic, 1003 ... Operation terminal logic, 1004
... complex condition logic, 1005 ... BP basic logic, 1
006 ... operation terminal output information, 1007 ... operation terminal timing information, 1008 ... BP console management information, 1101 ...
Logic name, 1102 ... T (timing condition), 1103 ...
OC (mode setting), 1104... OUT (output information),
1105... C (completion condition).

Claims (4)

[Claims] In a computer system for starting and stopping a plant by using a computer, the computer control logic is automatically applied to an apparatus using a plant table as one of methods for programming the computer control logic. A plant table automatic generation device for computer automation, comprising a means for developing a table. 2. The computer control logic according to claim 1, wherein the computer control logic is manually created and CAD-inputted for a fair copy. The computer control logic can be created and printed by a method of inputting a logical formula in accordance with a predetermined format. A plant table automatic generation device for computer automation characterized by creating logic data for development. 3. The apparatus according to claim 2, wherein the apparatus has a function of using a created logic database to develop the data into a plant table necessary for creating a computer automation program. Also, since the logic database and the plant table correspond, the contents of the logic diagram and the plant table always match, and when changing the plant table at the request of the customer, etc., it is possible to respond only by correcting the logic diagram. Automatic generation of computer-generated plant table. 4. The automatic plant table generation apparatus for computer automation according to claim 2, further comprising a function of automatically generating a test procedure manual using the created logic database.