JPH01112410A - Plant operation support equipment - Google Patents

Abstract

PURPOSE:To prevent the undesired condition to occur due to the erroneous judgement and misoperation of an operator while an effective guide is shown to the operator by displaying with a hierarchical relationship corresponding to the condition of a plant what a prohibiting operation harmful to the operation of the plant is. CONSTITUTION:Into a memory device 1 of a plant operation supporting device, the set of the prohibiting operation condition is stored hierarchically as prohibiting operation condition data 2 based on an inclusion relation. Related prohibiting operation data 3 are hierarchically described and stored beforehand with the set of a prohibiting operation as the inclusion relation for respective prohibiting operation states. Further, the plant data fetched by a plant data fetching device 6 connected to a plant 7 are inputted to an arithmetic processing unit 4 and the prohibiting operation condition data 2 stored in the device 1 is referred to. The prohibiting operation to arrive at the prohibiting operation condition based on the prohibiting operation data 3 is successively selected by the processing unit 4 and the selecting prohibiting operation is hierarchically displayed at an input output terminal 5.

Description

Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a support device for an operator who operates a plant, and particularly relates to a plant operation support device suitable for preventing erroneous operations by an operator. .

[Prior Art] Conventionally, as a device for supporting operation operations by plant operators by displaying prohibited operations, a device for determining whether or not a control rod insertion operation is possible in an atomic coupler is proposed by Enomoto et al. BWR. “Actual test of power distribution prediction calculation system” Journal of Atomic Energy Society of Japan Vol. 1.22. No, 11.
pp. 82L-828 (1980), page 824.

[Problems to be Solved by the Invention] The above-mentioned conventional technology analyzes the influence of an operation on the characteristic values of individual subsystems in the entire plant through simulation, and determines whether or not the operation is possible. This kind of operation permission determination is effective for determining the permission or prohibition of operations in individual subsystems, but when applied to the purpose of selecting and displaying prohibited operations related to the overall plant operating status, Because it does not take into account that prohibited operations relate to all terrant operations, it does not consider how to select a prohibited operation from among many prohibited operation candidates, or how to organize and display multiple prohibited operations. However, there was a problem in that it was not possible to provide effective guidance to the operator.

SUMMARY OF THE INVENTION An object of the present invention is to provide a plant operation support device that displays operations that lead to a prohibited operation state of a plant together with the hierarchical relationship of operations and provides effective guidance to operators.

[Means for Solving the Problems] The plant operation support device of the present invention provides prohibited operation state data that hierarchically describes a set of prohibited operation states of a plant based on their inclusion relationship, and prohibition information for each prohibited operation state. The plant data imported from the storage device that stores in advance prohibited-related operation data in which a set of operations is hierarchically described based on their inclusion relationship and the plant data import device is compared with the stored prohibited operation state data. an arithmetic processing unit that sequentially selects prohibited operations that lead to a prohibited driving state based on the stored prohibited operation data from a higher level concept; and an output device that displays the selected prohibited operations in a hierarchical manner. It is characterized by:

[Function] The arithmetic processing unit compares the stored prohibited operation state data with the plant data from the plant data import device, and determines the upper level concept of the prohibited operation data stored for each prohibited operation state data. Then, operations that lead to a prohibited driving state are sequentially searched for. The search results are displayed on the output device along with the hierarchical relationships. This allows the operator to see a hierarchical display of tasks that cannot be performed in the current Q operating state, thereby preventing erroneous operations.

[Embodiment] An embodiment of the present invention will be described below, taking as an example a case where the present invention is applied as an operation support device for an atomic couplant. In FIG. 1, 1 is a storage device in which prohibited driving state data 2 and prohibited related operation data 3 are stored.

The arithmetic processing unit 4 uses the prohibited operation state data 2 stored in the storage device 1, the prohibited operation related operation data 3, and the plant process data retrieved from the plant 7 by the plant data import device 6 to determine the current execution state. Operations that should not be performed in the middle driving mode are inferred by arithmetic processing and displayed on the input/output device 5 (including the display device).

FIG. 2 shows the process of arithmetic processing. First, in (2), the first data is extracted from the list of prohibited driving state data determined in advance.

An example of prohibited driving state data will be explained with reference to FIG.

In Fig. 3(a), the prohibited operation state data is that the capacity of the backup device of the important equipment is smaller than the required capacity (prohibition clause A), and in Fig. 3(b), the same is shown as half scram, or a state that leads to a scrum (prohibited clause B)
is shown as an example.

Prohibited Clause A in Figure 3(a) further includes important equipment such as TDRFP (Turbine Driven Recirculation Pump), T
DHPCP (turbine driven high pressure condensate pump), TDL
PCP (turbine driven low pressure condensate pump), TOCP (
A turbine-driven condensate pump) is shown. As a backup device for these, M
2 ORFPs (motor-driven recirculation pumps) (25 each
96 capacity), and for each of the other turbine-driven pumps TDHPCP, TDLPCP%TOCP.
Each similar motor-driven pump MDRFP%MDHPCP,
MDLPCP and MOCP are provided as backup. Prohibition Clause A above requires that the capacity of these backup devices be able to cope with the failure of one of the important devices in operation, and this is a prohibited operation state. The data is stored in a database as a list. On the other hand, regarding prohibition condition B, the factors and combinations thereof that lead to 8-F Scrum or Scrum are diverse, and the Scrum logic shown in FIG. 3(b) is compiled into a database as is.

These enumerated prohibited operation state data are compared with plant process data indicating the current plant state, and one of the prohibited related operations included in the prohibited related operation data is executed. Accordingly, it is determined whether or not a prohibited driving state is reached, and the determination result is displayed in the steps ① to ② in FIG. 2.

In Fig. 2, the comparison of the plant process data and prohibited operation state data in ■ is, for example, TD in prohibition clause A.
Regarding prohibitions regarding RFP, the capacity of the backup equipment and the required capacity are calculated and compared. Based on the results, (1) determine which operations, if executed, will lead to a prohibited driving state among the prohibited operations according to the following procedure.

FIG. 4 shows an example of prohibited-related operations. For example, TORFP
Prohibited related operations include changing plant output, starting/stopping TORFP, starting MORFP, etc. Regarding prohibition condition B, RPS (reactor protection system) surveillance test [this includes APRM
(average neutron flux monitor) surveillance test and RP
M (includes reactor protection monitor) surveillance tests) and operations such as lifting of the reactor protection system.

In ■ and ■ in FIG.
This involves extracting DRFP-related operations, plant output change operations, etc. In order to determine whether or not a single operation will result in a prohibited driving state, for example, a table related to prohibited driving states as shown in Fig. 5 should be prepared in advance.
Alternatively, a qualitative model of the plan as shown in FIG. 6 is provided and used for judgment. The qualitative model of the plant shown in FIG. 6 is made up of qualitative models such as RPS interlock information, a calculation model for the capacity of each of the backup devices described above, and dynamic characteristics of the plant.

If the operation of the highest level concept extracted at ■ in Figure 2 is determined to be a prohibited operation at It is evaluated sequentially through processing. In other words, the highest level concept is a prohibited operation when the plant state enters a prohibited area as a result of executing at least one of the operations included in the lower level concepts. It shows.

For example, assume that two TDRFPs are in operation and the plant output is 50*. For TDRFP, two M
There is an ORFP, but each of these two units has a capacity of 25* when one unit is rated. This time, 1 TD
Suppose that the RFP malfunctions. Even one TDRFP is 50*
Since it has a capacity of , it continues to operate in this state,
It is possible to repair a failed TDRFP. At this time, when considering the operation of changing the output of the plant,
There are output increase and output decrease as operations corresponding to the subordinate concept of output change. In this case, the operation to lower the output poses no particular problem, but the operation to increase the output is prohibited. This is because if one more MORFP is activated due to an increase in output, the backup capacity will be only one MDRFP, that is, 259g capacity, but one TDRFP.
The required capacity assuming a machine failure is 50 zero, and as shown in Fig. 3 (a
) would violate Prohibition Clause A.

In such a case, "output change" which is the operation concept at the highest level is a prohibited operation, "output increase" which is an operation at a lower level is determined to be a prohibited operation, and "output decrease" is not a prohibited operation. The same applies to the prohibited operation corresponding to the prohibited operation state of ``r RPS scram occurrence''.

For example, when the A-system RPS is in a half-scrum state, the APRM surveillance test (the highest level concept) is a prohibited operation, but the A-system AP, which is a lower level concept,
In the πM surveillance test and the B-system APRM surveillance test, the A-system surveillance test does not result in a scram even if it is performed, so it is not a prohibited operation, but the B-system APRM surveillance test does not result in a prohibited operation. A scram occurs and the operation is prohibited because it is included in the prohibited operation state.

FIG. 7 illustrates the relationship between the above-mentioned higher-level concepts and lower-level concepts of operations, that is, the relationship between hierarchical relationships and prohibited operations. As seen in this figure, each operation usually has multiple superordinate concepts. For example, TORFP startup is included in the plant's output increase operation, and is also included in a series of plant operation tests called nuclear reactor startup tests. In such a case, if at least one prohibited operation is included in the lower level of each operation, the operation of the higher level concept is determined to be a prohibited operation.

FIG. 8 is an example of output of such prohibited operations on the display. Among the characters on the screen, a square frame with a diagonal line inside indicates a prohibited operation, and a character without a diagonal line indicates that the operation is not prohibited. In this way, the availability of each plant operation is hierarchically displayed on the screen. This example is a display example of a prohibited operation when one TDRFP fails while operating at the above-mentioned plant output 3096. If one TDRFP fails when the output is 30 zero, the output will be allowed to rise to 50*. i.e. 50 to -30 to -2096
The output increase up to this point is within the permissible range, and a message to that effect is output. Furthermore, operations that are a subordinate concept of non-prohibited operations, that is, operations that are child nodes of non-prohibited operations (see FIG. 7), are not displayed, and the display is condensed. Such reduction of display information is achieved by the algorithm shown in FIG.

FIG. 10 shows each operation determined to be a prohibited operation:
This is an example of a screen displaying the reason why each prohibited operation is prohibited. Currently, one TDRFP is out of order, so in addition to changing plant output, we are unable to conduct tests that require a stable reactor condition, such as RPS surveillance tests. It is displayed as such. Furthermore, although only the top-level concept of prohibited operations is shown, if necessary, prohibited operations of lower-level concepts can be listed by operating the screen, and the reason for the prohibition can be displayed.

FIG. 11 shows a second embodiment of the invention. 8 is a storage device, 9 is prohibited operation state data stored in the storage device 8, 10 is prohibition related operation data, 11 is an arithmetic processing unit, 12 is a plant, 13 is a plant data acquisition device,
14 is a plant operation panel. In the arithmetic processing unit 11, the prohibited operation state data and prohibition-related operation data stored in the storage device 8, and the plant data import device 13
Using the process data thus captured, the plant 12 infers plant operations that should not be performed in the plant at that time, either as a single operation or a series of operations, as in the previous example, and as a result, For operations that are found to be prohibited, an interlock will be placed on the plant operation panel 14 or a message to that effect will be displayed near the switch.

FIG. 12 shows prohibited operations and
This is an example of displaying the work. Normally, a plant operation panel has related switches arranged nearby depending on the purpose, such as switches related to control panel operation and switches related to output changes. This corresponds to the general concept of the operations mentioned in the previous embodiment. Therefore, as shown in Figure 12, a prohibited operation display frame that can be lit up is created that surrounds the entire group of related switches, and a warning is issued when a switch within the lit frame is operated. be able to. In the example shown in FIG. 12, a warning is issued for an output change operation.

Conversely, for the switch you are trying to operate,
When the switch is pressed half way, a mechanism is activated to determine whether the operation is a prohibited operation, and if the operation is prohibited, an alarm is issued and an interlock is set, preventing the switch from being pressed. You can also install a mechanism that allows you to press the switch as long as it is not a prohibited operation. In this case, all operation buttons and switches other than special operation buttons, such as the manual scram button, are assumed to be prohibited related operations included in the prohibited related operation data in the above-described embodiment. However, in special cases, certain operations may have to be performed even if operating standards are violated, so an interlock release key is installed so that only the person in charge of plant operation can access it.

[Effects of the Invention] According to the present invention, operations that are harmful to plant operation (prohibited operations) are displayed in a hierarchical relationship corresponding to the state of the plant. It is possible to prevent undesirable conditions in the plant due to misjudgment or erroneous operation by operators, and it also allows operators to judge the pros and cons of maintenance work during operation. We can expect an improvement in the operating rate.

[Brief explanation of the drawing]

Figure 1 is an overall view of an embodiment of the present invention, Figure 2 is a diagram showing an algorithm for determining prohibited operations, and Figures 3 (a) and (b).
) is an example diagram of prohibited operation state data, Figure 4 is an example diagram of prohibited related operations, Figure 5 is an example diagram of a determination table for prohibited operations, Figure 6 is an example diagram of a plant qualitative model, and Figure 7 is an example diagram of prohibited operations. A conceptual diagram showing the hierarchical relationship of operations, Figure 8 is an example diagram of display output, Figure 9 is a diagram showing an algorithm for output creation, Figure 10
The figure shows an example of outputting the reason for prohibition, FIG. 11 is an overall view of the second embodiment, and FIG. 12 is a diagram illustrating the display of the second embodiment. 1... Storage device 2... Prohibited operation status data 3... Prohibited related operation data 4... Arithmetic processing unit 5... Input/output device 6... Plant data import device Fig. 1 Toshiba Quantity 2 Prohibited Driving Condition Data 3 Prohibited Interpretation Data 4 Arithmetic Processing Unit 5 Output Mizuki 6 Plant Data Intake Placement 7 Plant Figure 2 Figure 3 Prohibited Thread 1jA: Important Equipment Bank up capacity! (Please) O: I want you to do something with a 4T- 8th figure 9 Figure △15 completed Figure 10 Figure 12

Claims (1)

[Claims] 1. Prohibited operating state data that describes a set of prohibited operating states of a plant in a hierarchical manner based on their inclusion relationships, and prohibited related operations that hierarchically describes a set of prohibited operations for each prohibited operating state based on their inclusive relationships. The plant data imported from the storage device that stores data in advance and the plant data import device is compared with the stored prohibited operation state data to reach the prohibited operation state based on the stored prohibited operation data. 1. A plant operation support device comprising: an arithmetic processing device that sequentially selects prohibited operations from a higher level concept; and an output device that hierarchically displays the selected prohibited operations.