JPH05264776A - System for testing plant control equipment - Google Patents

Abstract

PURPOSE:To obtain a testing system for testing plant control equipment which makes it possible to expand the extent of an automatic test and also to automatic judgement on start and discontinuation of the test. CONSTITUTION:A general control apparatus 18 for testing is provided. A signal inputted to a plant computer 11 from each part of plant control equipment 6 is thereby taken in and a signal necessary for a test is transmitted from this general control apparatus 18 to each of testing devices. Besides, the signal necessary for the test is taken directly in the testing devices 19 to 21 directly from the plant computer 11 without being passed through the general control apparatus 18 for testing. Together with checkup of the soundness of the inside of an object of the test, checkup of the soundness of associated devices and a control apparatus can be executed as well. Thereby the extent of an automatic test can be expanded and further judgement on start and discontinuation of the test can be automated as well.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a test system for a plant control device for automatically confirming the soundness of the operation of each part in the plant control device.

[0002]

2. Description of the Related Art FIG. 5 is a block diagram showing a conventional test system for a plant controller. In the figure, 1 is a transmitter installed at each site of the plant, which detects process conditions such as temperature, flow rate, pressure, and water level and sends out by an electric signal, 2 is a protection system connected to the transmitter 1 as a test object Instrument rack 3, 3 is a protection system logic board connected to the protection system instrument rack 2 as a test object, 4 is a protection system accessory control panel connected to the protection system logic board 3 as a test object, and 5 is this It is an auxiliary machine such as a solenoid valve or a motor-operated valve which is controlled by the output of the protection system auxiliary machine control panel 4.
Reference numeral 6 denotes a plant control device including the transmitter 1, a protection system instrument rack 2, a protection system logic panel 3, a protection system accessory control panel 4 and an accessory 5.

Reference numeral 7 is a D for collecting the input / output signals of the protection system instrument rack 2, the protection system logic panel 3, the protection system accessory control panel 4 and internal main signals, and the status signal of the accessory 5.
An AS processor, 8 is an engineering processor for calculating the signals collected by the DAS processor 7, and 9 is a CRT processor for controlling the display of the signals collected by the DAS processor 7 and the signals processed by the engineering processor. 10 is this DAS processor 7, engineering processor 8, and CR
A unit bus to which the T processor 9 is connected.
Reference numeral 1 is a plant computer including these processors 7 to 9 connected by a unit bus 10.

Reference numeral 12 is a central control panel equipped with a CRT for displaying signals sent from the CRT processor 9, 13 is a station bus to which the engineering processor 8 is connected, and 14 is the station bus 1
It is a technical support center connected to 3. Further, 15 is a test device which is connected to the protection system instrument rack 2 to automatically check the soundness of its operation, 16 is a test device which also automatically checks the soundness of the operation of the protection system logic board 3, and 17 is It is a testing device for automatically confirming the soundness of the operation of the protection system accessory control panel 4.

Further, FIG. 6 is a block diagram showing the internal constructions of the protection instrument rack 2 and its testing device 15. In the protection system instrument rack 2, 31 is a converter that performs current / voltage conversion of a signal from the transmitter 1, 32
Is a calculator for performing operations such as square root, lead / lag, addition and subtraction on the output of the converter 31, and 33 is a bistable device for generating a bistable output signal based on the output of the calculator 32. 34 to 37 are these converters 31 and calculators 32
And 38 is a relay for an interface that connects the input and output ends of the bistable device 33 to the test apparatus 15, and 38 is a converter 31.
A current / voltage conversion resistor for converting a current signal input to the voltage signal into a DAS processor 7 and inputting the signal to the DAS processor 7, 39 is an input signal of the computing unit 32 or the bistable device 33.
It is a protection resistor to be taken into the processor 7. In addition,
Reference numeral 40 is an input relay of the protection system logic board 3, a part of which is shown, and 41 is a logic card thereof.

Further, in the test apparatus 15, 42 is a CPU for controlling the test apparatus 15 as a whole, 43 is a ROM in which programs and the like are stored, and 44 is a RAM in which data in the process of the CPU 42 is stored. Four
Reference numeral 5 is an analog output device for outputting a signal based on an analog current, 46 is an analog input device for receiving a signal based on an analog voltage, 47 is a digital input device for receiving a digital signal, and 48 is a digital output for outputting a digital signal. Is a device, and 49 is each of these devices 42 to 4
It is an internal bus connecting 8 to each other.

Next, the operation will be described. Here, FIG.
Shows the reactor protection system of the PWR nuclear power plant, and the input / output signals of the protection system instrument rack 2, the protection system logic panel 3 and the protection system auxiliary machine control panel 4 in the plant control device 6 and the internal The main signal and the status signal of the auxiliary machine 5 are collected by the DAS processor 7 of the plant computer 11 and sent to the engineering processor 8 and the CRT processor 9 via the unit bus 10. In this case, input / output signals of the protection system instrument rack 2 and the like and internal main signals are taken into the DAS processor 7 via the current / voltage conversion resistance 38 and the protection resistance 39.

On the other hand, the engineering processor 8 calculates the received signal and outputs the processed result to the unit bus 1.
0 and station bus 13. The CRT processor 9 takes in signals from the DAS processor 7 and the engineering processor 8 from the unit bus 10, sends the signals to the central control panel 12, and sends the signals to the CR.
Controls the display of T on the screen. In the initial plant, the plant computer 11 was formed by one processor, but in recent plants, the functions are divided, and it is formed by a plurality of processors 7 to 9 as shown in the figure. ..

In the plant constructed in this way, the protection system instrument rack 2, the protection system logic panel 3, which is the test object,
When confirming the soundness of the operation of the protection system auxiliary equipment control panel 4, as shown in the figure, the test devices 15 to 17 developed individually for each test target are connected, and the test devices 15 to 17 are connected. The soundness of the operation was confirmed by each test target unit by. Next, the test operation will be described with reference to FIG. 6 by taking as an example the operation of confirming the soundness of the protection system instrument rack 2 by the test apparatus 15.

At normal times, the protection instrument rack 2 receives the actual process signal (4-20 mA) input from the transmitter 1.
Is converted into a voltage signal by the converter 31, a predetermined calculation is performed by the calculator 32, and a bistable output signal (normal / trip) is output from the bistable 33 to the protection system logic board 3. Therefore, during normal operation other than the test, the relay 34
No. 37 to 37 are not excited. Here, in order to check the soundness of the protection system instrument rack 2, a set value (trip voltage, reset voltage) confirmation test of the bistable 33 including the characteristics of the converter 31 and the calculator 32 is performed.

In the test, first, a signal is output from the digital output device 48 of the test apparatus 15 to excite the relays 34 to 37, the actual process signal from the transmitter 1 is disconnected, and the analog output device 45 of the test apparatus 15 is output. The simulated input signal is applied to the converter 31 of the protection system instrument rack 2 and the output signal of the bistable device 33 is disconnected. On the other hand, the input signal of the bistable device 33 is taken into the analog input device 46 of the test device 15 through the contact of the relay 36, and the output state signal of the bistable device 33 is taken into the digital input device 47 of the test device 15 through the contact of the relay 37. .. After that, the simulated input signal from the analog output device 45 is changed, and the input voltage (trip, reset voltage) of the bistable device 33 when the output state of the bistable device 33 is changed (reset → trip, trip → reset). It is taken into the analog input device 46 and measured. This measured value is compared with a preset specified value to determine its quality.

At this time, the input / output signals of the protection system instrument rack 2, the protection system logic panel 3, and the protection system accessory control panel 4 and the status signal of the accessory 5 are input to the plant computer 11 for operation monitoring. However, these signals are not used in the automatic test of the test objects 2 to 4 by the test devices 15 to 17. Further, in FIG. 6, when the relay 37 is excited to separate the bistable output signal, the input relay 40 of the protection system logic board 3 changes from energized to non-excited. However, in order to confirm this change, the central control panel 12
The only option was for the operator to visually check the warning indicator light or CRT display.

On the other hand, the test device 16 for the protection logic board 3
Since a simulated input signal is applied from the input of the logic card 41, a confirmation test from the output of the bistable device 33 of the protection instrument rack 2 to the contact of the input relay 40 of the protection logic panel 3 including the signal cable is performed. It cannot be performed automatically, and there is a range that requires manual labor. In addition, the protection system accessory control device 4
There are tests for actually operating the auxiliary device 5 and tests for not actually operating the auxiliary device 5. However, the pass / fail judgment when the auxiliary device 5 is actually operated is determined by taking in the status signal of the auxiliary device 5 to the test apparatus 17. Although it is possible, there were some parts that could not be tested automatically because it was difficult in practice.

Further, since the conventional test devices 15 to 17 exchange signals only with the device under test, the states of the upstream and downstream devices are unknown, so it is necessary to test whether or not the test can be performed. It depended on the operator's judgment as to whether or not it should be stopped on the way. Therefore, the operator had to constantly check the operating status of the plant and the status of the equipment.

Note that, as a document describing a technique relating to a test apparatus in such a conventional plant control apparatus test system, there is, for example, Japanese Patent Application Laid-Open No. 59-136806.

[0016]

Since the conventional test system for the plant control device is configured as described above,
Each of the test devices 15 to 17 is independent, and the soundness is confirmed for each device to be tested. Therefore, the range that can be confirmed by the test is limited to the inside of the device, and the operator determines whether to start or stop the test. There was a problem that it was necessary.

The present invention has been made to solve the above-mentioned problems, and it is possible to confirm the soundness of the inside of a test object and also the soundness of related devices and control equipment. It is an object of the present invention to obtain a plant control device test system capable of automating the judgment of test start and stop.

[0018]

According to a first aspect of the present invention, there is provided a test system for a plant control device, which is connected to each test device by a communication line, and which receives a signal input from each part of the plant control device to a plant computer. It is equipped with a test supervision device that takes in signals from a plant computer and transmits necessary signals to each of the test devices via a communication line.

According to a second aspect of the present invention, there is provided a test system for a plant control device, wherein each test device is connected to a plant computer by a communication line, and a signal input from each part of the plant control device to the plant computer is directly supplied. It is designed to be loaded into the test equipment from the plant computer.

[0020]

In the test control apparatus according to the invention described in claim 1, the signals inputted to the plant computer from the respective parts of the plant control apparatus are fetched from the plant computer, and the signals required for the test are transmitted to the respective test apparatuses through the communication line. Of the plant control device that can check the soundness of the inside of the test object and the soundness of the related devices and control equipment by transmitting the data via the Implement a test system.

The test apparatus according to the second aspect of the present invention is a test system for a plant control apparatus, which enables cost reduction in the case of a small-scale configuration by directly fetching a signal required for the test from the plant computer. To be realized.

[0022]

【Example】

Example 1. Embodiment 1 of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of the invention described in claim 1. The same parts as those in FIG. 5 are designated by the same reference numerals and the description thereof will be omitted. In the figure, reference numeral 18 is connected to the unit bus 10 of the plant computer 11, and from the protection system instrument rack 2, the protection system logic panel 3, the protection system auxiliary machine control panel 4, the auxiliary machine 5, etc. of the plant control device 6 to the plant computer 11 Of D
Capturing the signals collected by the AS processor 7,
It is a test supervision apparatus that transmits a signal necessary for a test to a test apparatus described later. Reference numerals 1 to 19 in FIG. 5 indicate that 19 to 21 are provided with an interface for signals with the test supervision apparatus 18.
5 to 17 is a test device different from that shown, and 22 is these test devices 19 to 21 and the test supervision device 1
8 is a communication line such as RS422 which is connected to

FIG. 2 is a block diagram showing the internal construction of the protection system instrument rack 2 and the test apparatus 19 connected to it. In this case as well, the same parts as in FIG. .. In the test apparatus 19, 50 is a communication line card for interfacing with the communication line 22 connected to the test supervisory apparatus 18 connected to the unit bus 10 in the plant computer 11. In the test supervision apparatus 18, 51 is a CPU that controls the test supervision apparatus 18 as a whole, 52 is a memory in which programs and data of processing processes are stored, and 53 is a communication line 2.
2 is a communication line card for interfacing with 2; 54 is an internal bus connecting these devices 51 to 53; 55 is a bus controller for interfacing the internal bus 54 with the unit bus 10 of the plant computer 11. is there.

Next, the operation will be described. In FIG. 1, the input / output signals of the protection system instrument rack 2, the protection system logic panel 3, and the protection system auxiliary machine control panel 4, and the status signals of the auxiliary machine 5 are collected by the DAS processor 7 of the plant computer 11, and the unit bus It is transmitted to the engineering processor 8 via 10. The test control device 18 takes in the data transmitted on the unit bus 10 via the loop controller of the unit bus 10 and exchanges the data with each of the test devices 19 to 21 via the communication line 22.

Next, a case where the present invention is applied to the test device 19 for the protection instrument rack 2 will be described with reference to FIG. Current signal from transmitter 1 (4-20mA)
Are taken into the DAS processor 7 through the current / voltage conversion resistor 38 and the input / output signals of the arithmetic unit 32 through the protection resistor 39. On the other hand, the bistable output signal of the bistable device 33 is connected to the coil side of the input relay (always excited) 40 of the protection system logic board 3, and the contact of this input relay 40 is connected to the input of the logic card 41. The input signal of the logic card 41 is sent to the DAS processor 7 via a multiplex / demultiplex device (not shown). Here, when the relay 37 is excited to disconnect the bistable output signal, the input relay 40 of the protection system logic board 3 changes from excitation to non-excitation, but a signal related to this change is fetched via the DAS processor 7. By inputting from the test control device 18 to the test device 19, the change can be automatically confirmed on the test device 19 side.

Further, in the test of the protection system auxiliary equipment control device 4,
In the test for actually operating the auxiliary machine 5, the test apparatus 21 inputs the status signal of the auxiliary machine 5 from the test supervision apparatus 18 via the DAS processor 7, so that the operation including the operation check of the auxiliary machine 5 can be automated. it can. Furthermore, the states of the devices to be tested on the upstream side and the downstream side are compared with the test devices 19-2.
By inputting 1 from the test supervision apparatus 18 via the DAS processor 7, each of the test apparatuses 19 to 21 determines whether the test can be carried out or whether the test should be stopped midway. This makes it possible to automate this.

Example 2. In the above embodiment, the test supervisory device 18 is connected to the unit bus 10 in order to capture the signal from the plant computer 11. However, as shown in FIG. 3, the test supervisory device 18 is connected to the station bus 1.
3 may be connected and the data on the station bus 13 transmitted from the engineering processor 8 may be taken in, and the same effect as the first embodiment is obtained. It should be noted that the advantage of the second embodiment is that it does not support units, and only one test control device is required for the entire plant, so that the facility can be simplified. For example, when the number of nuclear reactors is from Unit 1 to Unit 4, four test supervision devices 18 are required in the system of the first embodiment, but one system is sufficient in the system of the second embodiment.

Example 3. Further, in the above-described embodiment, the case has been described in which signals are exchanged between the test control device 18 and the test devices 19 to 21 using the one-to-one communication line 22, but a local area network is used as the communication line. (LAN) or the like may be used, and the same effect as that of the above-described embodiment is obtained.

Example 4. Next, a fourth embodiment of the present invention will be described with reference to the drawings. FIG. 4 is a block diagram showing an embodiment of the invention described in claim 2. The same parts as those in FIGS. 1 and 3 are designated by the same reference numerals and the description thereof will be omitted. In the figure, 23 to 25 are unit buses 1 of the plant computer 11.
0, and test the signals collected by the DAS processor 7 of the plant computer 11 from the protection system instrument rack 2, the protection system logic panel 3, the protection system auxiliary machine control panel 4, the auxiliary machine 5, etc. of the plant control device 6. This test device is different from the device denoted by reference numerals 19 to 21 in FIGS. 1 and 3 in that the test device is directly loaded without going through the integrated device.

Also in the case of the fourth embodiment, each of the test devices 23 to 25 outputs a signal required for the test to the plant computer 11.
The same test is performed by taking in more, and the same effect as that of each of the above-described examples is achieved. It should be noted that this embodiment can reduce the cost when applied to a small-scale configuration having a small number of test apparatuses, but in the case of a large-scale configuration having a large number of test apparatuses, the cost of Applying the method simplifies the configuration and reduces the cost.

[0031]

As described above, according to the invention as set forth in claim 1, the signals required for the test are taken in from the plant computer by the signals input to the plant computer from the respective parts of the plant control device in the test supervision device. Since it is configured to transmit to each of the test equipment, it is possible to confirm the soundness of the inside of the test object as well as the soundness of the related equipment and control equipment, and expand the range of automatic test. ,
Further, there is an effect that a test system of a plant control device capable of automating determination of test start and stop can be obtained.

Further, according to the invention described in claim 2, since the signal from the plant computer is directly taken in by each test device without passing through the test control device, the cost is reduced in the case of a small-scale structure. It has the effect of being downed.

[Brief description of drawings]

FIG. 1 is a block diagram showing a first embodiment of the present invention.

FIG. 2 is a block diagram showing an internal configuration of a protection system instrument rack and its testing device in the above-described embodiment.

FIG. 3 is a block diagram showing a second embodiment of the present invention.

FIG. 4 is a block diagram showing a fourth embodiment of the present invention.

FIG. 5 is a block diagram showing a conventional test system for a plant control device.

FIG. 6 is a block diagram showing an internal configuration of a protection system instrument rack and its testing device in a conventional plant control device testing system.

[Explanation of symbols]

 2 Test target (protection system instrument rack) 3 Test target (protection system logic panel) 4 Test target (protection system auxiliary equipment control panel) 6 Plant control device 11 Plant computer 18 Test control device 19-21 Test device 22 Communication line 23- 25 Test equipment 26 Communication line

Claims (2)

[Claims] 1. A plant control / monitoring system configured by a plant control device and a plant computer for controlling and monitoring a plant, wherein a test device is connected to each of a plurality of test objects in the plant control device. In the test system of the plant control device for confirming the operation of each of the test targets by each of the test devices, a signal that is connected to the test device by a communication line, and is input to the plant computer from each part of the plant control device. A test control apparatus for taking in the above from the plant computer and transmitting a necessary signal to each of the test apparatuses via the communication line. 2. A plant control / monitoring system comprising a plant control device and a plant computer for controlling and monitoring a plant, wherein a test device is connected to each of a plurality of test objects in the plant control device, In a test system of a plant control device for confirming the operation of each test target by each of the test devices, each of the test devices is connected to the plant computer via a communication line, and the plant computer from each part of the plant control device. A test system for a plant control device, wherein each of the test devices directly takes in a signal input to the device from the plant computer via the communication line.