JPH04148898A - Controlling device for plant operation procedure - Google Patents

Abstract

PURPOSE:To judge feasibility of operation procedure and interference in real time by inputting plant process signals periodically and outputting on a temporary data base after a proper data conversion. CONSTITUTION:The signal from sensors set in a plant is input in real time to a plant signal input device 1. The input signal is converted to a form commonly interpreted by a plant state surveillance device 5, operation procedure administration device 6 and an output device 7, and recorded on a temporary data base 2. At step S36, the operation procedure including operation data on apparatus different in operation for an objective apparatus is judged to be an operation procedure including apparatus interfered in the usage. Next in step 37, the initial set is deleted from the queue and if the queue in the step S38 is vacant, the process is terminated. In this manner, the feasibility and interference of the operation procedure derived by an operation procedure deriving device 3 can be judged.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a management device for operating procedures in a plant operation support system.

(Prior Art) For example, in a complex process plant such as an atomic coupler, if multiple failures are assumed, there may be a case where a previously anticipated operation cannot be executed. This is especially true when unexpected abnormalities and accidents are assumed.

In order to ensure safety in a 1 m child plant, it is necessary to carry out appropriate operating operations in response to changes in plant conditions, but under the above assumptions, there are restrictions on possible operating operations. For example, operations that require malfunctioning equipment cannot be performed, and if the tli-system has multiple modes of operation, multiple modes generally cannot be operated at the same time.

In anticipation of such a situation, operational procedures are prepared for nuclear couplers in case of an abnormality or accident. However, it is virtually impossible to create a procedure manual that covers all possible situations.

Furthermore, even if something similar to this could be created, it would be enormous and complex, making it difficult to operate it appropriately in response to changes in the blunt state during actual operation.

Recently, plant operation support systems using computers have been developed.

These systems input plant process signals online and apply pre-prepared rules for abnormality diagnosis and operational procedures.
Deriving appropriate operating procedures that correspond to plant conditions,
This is provided to plant operators as an operation guide message.

As an example of such a system, the operation of a residual heat removal system in a nuclear power plant will be described below.

FIG. 4 shows a simplified concept of a residual heat removal system for a boiling water-type thermal power generation plant. The residual heat removal system depicted in Figure 4 has two functions. One is when the water level in the reactor 12 decreases, the pump 14 is
The other is to inject this water into the nuclear reactor] 2, and when the water temperature in the pool 11 rises, the water in the pool is circulated through the heat exchanger] 7 to cool the pool 11. At this time, heat is applied to the heat exchanger 17.
The water from the pool 11 is circulated and the heat from the pool 11 is finally released to the heat sink 19. Incidentally, the term "thermal reservoir] 9" here actually refers to the sea, river, or lake. The selection between these two functions is made by opening and closing the injection valves 15, 16 from the pump 14. That is, when injecting water from the boule 11 into the reactor 12, the valve [6] is closed and the valve 15 is opened. On the other hand, when cooling the pool] 1, the valve 15 is closed and the valve 16 is opened.

Further, in order to cool the heat exchanger 17, a pump 18 is used to circulate water from the °-C reservoir]9 through the heat exchanger 17 and back to the reservoir]9.

Furthermore, when not injecting water into the reactor, the injection valve 5 is closed to prevent water from flowing back from the reactor 2.

For the system in Figure 4, from Boolean]] to reactor 12
When injection is requested in the conventional technology, the operating procedure is derived according to the following rules. In this case, it is assumed that the injection valve 5 is closed in advance and is automatically opened by an interlock when the pump 14 is started and the pressure inside the pipe on the pump side becomes higher than the pressure inside the reactor 12.

Rule 1: Derivation of valve 13 open F Injection element valve to reactor 12 ] 3 Closed valve 13 standby normal T HE N Operate valve 13 open > This rule is based on valve ] 3, or the operation to open it when it is closed. It is for deriving.

Rule 2: Derivation of valve 16 closed F Injection request to reactor 12 Valve 16 open] 6 Standby IF Normal HEN 1 榮f';<Valve 16 closed> This rule indicates that if valve 16 is open, Derive the operation to close .

Rule 3: Derivation of pump 14 startup ■F Nuclear reactor 72 injection request valve 13 Open valve 16 Closed pump 14 Stopped pump 14 standby normal HEN Operate pump 14 startup > This rule derives the pump 14 startup operation. By applying an appropriate inference engine to the above rules and manually inputting the process data online, operating procedures for the valves 13, 16 and pumps 14 are derived when an injection request for the reactor 12 is generated.

SUMMARY OF THE INVENTION However, conventional systems do not have a general ability to manage dependencies between the status of plant equipment and executable operating procedures. Therefore, the following problems arise.

First, in the case of the conventional system, a condition is included to derive the operation of a certain device or to check whether the device is always operating normally. This is necessary to prevent the operation of a malfunctioning device from being output as a procedure, but the system developer must check whether the target device is normal or not for each operation derivation rule. It is cumbersome as it is necessary to write the conditions to check.

Second, a single system can be used in multiple operating modes.
In the case of a device that is used in common, it is not possible to generalize judgments regarding devices that are commonly used or devices that cause interference in the usage method. In the example described above, the residual heat removal system has two operation modes: injection into the reactor 12 and heat removal from the pool 11. At this time, the pump] 4 is a commonly used device, and the valves 15 and 16 are devices whose usage may vary. The rules for deriving the injection procedure into reactor 1-2 in this example do not take into account the simultaneous occurrence of requests for the operation mode for heat removal in Boolean 1, but if this were taken into account, the rules would become complicated. Become something.

The above-mentioned problems have made it difficult to develop conventional driving support systems, and can ultimately reduce the cost of the system.

In the future, support systems will become more sophisticated, and from the conventional system of adapting predetermined operating procedures to a thousand anticipated events, to dynamically synthesizing operating procedures based on the plant configuration and physical laws. However, in conventional systems, the dependence of operating procedures on plant conditions makes the system even more complex and difficult to develop.

The present invention has been made with these points in mind, and by generally managing the relationship between plant operation procedures and their execution conditions, it is possible to easily develop a plant operation support system, and to improve reliability. It is an object of the present invention to provide a driving operation procedure management device that can improve the driver's performance and also allow the development of a more advanced support system.

[Structure of the invention]

(Means for Solving the Problems) The present invention provides a plant signal input device for converting plant process signals input online to obtain plant status data as a means for achieving the above-mentioned object 1.
a temporary database for recording the plant status data, plant operating procedure data and related information; a plant database for recording conditions for operating the equipment that makes up the plant; and achieving operational goals given from the outside. In order to achieve this, an easy-to-understand operating procedure is derived based on the plant status data from the previous temporary database and the conditions from the brand database, and the individual equipment operations constituting the derived operating procedure are an operation procedure deriving device that records the operation procedure data and equipment operation data in the temporary database in relation to the execution conditions thereof; Blunt condition monitoring that determines whether the execution conditions for device operations, which represent the individual device operation data that make up the operation procedure data, are satisfied or not, and records the judgment results and the target device 1/■ operation data in a temporary database. a device; using the determination result of whether the equipment operation execution condition represented by the equipment operation data is met or not, determines the feasibility of the plant operation procedure data recorded in the temporary database, and performs multiple operation operations; The present invention is characterized in that a driving operation condition rational device for determining interference between procedural data is provided.

(Function) In the plant operation procedure management device according to the present invention,
The plant signal input device periodically inputs plant process signals, performs appropriate data conversion, and outputs them to a temporary database. The operation procedure derivation device derives operation procedures to achieve the operation target given from the outside, but the data in the plant database used at this time includes:
The conditions under which the target equipment is activated by each operation are recorded. Since the operating conditions of this device are unique to each device, they can be determined in advance according to the specifications of the device. The driving operation procedure deriving device derives the driving operation procedure as a collection of a series of equipment operations. to be recorded. The blunt condition monitoring device monitors the bran I/condition data on the temporary database every time it is changed by the plant signal input device, and performs the operation of each equipment operation according to the operating procedure derived by the operating procedure deriving device. It is determined whether the condition is satisfied or not, and this is recorded in a temporary database in association with each determined device operation. Based on this result, the operating condition management device evaluates the feasibility of an entire operating procedure based on changes in plant conditions and records the results in a temporary database.

It also determines operating procedures that may cause sharing of equipment or interference with each other.

(Example) Examples of the present invention will be described below using a case where the present invention is applied to the residual removal system of the boiling water type atomic couplant cited as the example above.

FIG. 1 is a configuration diagram showing a plant operation procedure management device according to an embodiment of the present invention. In the figure, reference numeral 1 denotes a plant signal input device that inputs plant process signals. Signals from sensors installed in the plant are
The signals are input to the plant signal input device 1 in real time. The manually input signals are converted into a format that can be commonly interpreted by the operation procedure derivation device 3, the blunt condition monitoring device 5, the operation condition management device 6, and the output device 7, and the temporary database 2
” recorded in 2. This data is hereinafter referred to as plant status data.

The brand database 4 records in advance the conditions that are necessary due to the nature of the equipment when operating certain equipment in the plant. For example, ``In order to operate electric equipment,
Power supply voltage must be established. ”, “In order for the device to work, it must be on standby normally.”
etc. conditions. These are written in the following format:

Target device operation = condition, condition, etc. Generally, multiple conditions can be described and are interpreted using an AND relationship. Furthermore, a special mark is placed on those conditions that cannot be easily changed by operator operation. Here, this mark is represented by *.

If the target device is the pump 14, the operation is startup, and the condition is normal on standby, then the following will occur.

Pump 14 starts <-*Water pump 4 standby normal pump 14
The reason why ``standby normal'' is marked with an asterisk is because if the normal pump fails, it is unlikely that 11B will be easily restored.

When a driving target is requested from the outside, the driving operation procedure deriving device 3 derives a driving operation procedure that does not satisfy the driving target. The derivation method is arbitrary, and rules similar to those shown in the above example can also be used. However, the derived driving operation procedure is expressed in the following format.

Operation procedure - Operation procedure name Requirements (equipment operation,
(Equipment operation,...) Equipment operation - Target equipment - Operation - Conditions, Conditions, etc. In other words, an operation procedure consists of a series of operations, and an operation procedure name and required conditions are added for identification. . Drinking conditions identify why the applicable operating procedures are required. In the example in item 1, "injection into the nuclear reactor 12" is the required condition. Each operation is described as a set of target equipment, operation, and conditions. Each condition is interpreted in an AND relationship.

The description format of equipment operations constituting the operating procedure is the same as the description format of equipment operation conditions recorded in the plant database 4. Therefore, the operation procedure derivation device 3 can add the equipment operation conditions of the plant database 4 when deriving equipment operations. For example, if it was directly derived as a device operation, or if pump 14 starts and valve 3 is open and valve 16 is closed, then the left side of the plant database 4 indicates that pump 14 starts <-*Water pump 4 standby normal. Therefore, the following equipment operations are finally derived.

Pump 14 starts, valve 13 opens, valve 16 closes, *Pump 14
Standby Normal Thus, for the injection into the reactor 12 in the above example, the derived 1L order is expressed in the following form:

Reactor injection procedure Injection request to reactor 12 (valve) 3 open
- Valve 13 closed, *Valve 13 standby, normal valve 16 closed <= Valve 16
Open, *Valve 13 standby normal pump 14 starts - Valve 13 open,
Valve] 6 closed, *Pump] 4 standby normal) In addition, when the residual heat removal system is used to cool Pool 1], the procedure is as follows.

Boole]] Cooling procedure Pool] 1 cooling request (valve 13 open
= valve 13 open, *valve 13 standby normal valve 16 open - valve 16
Open, *Valve 13 standby normal pump 14 start - Valve] 3 open,
Valve 16 closed, *Pump 14 on standby, pump 18 activated <-*Water pump 8 on standby, normal) The derived operating procedure is recorded in the temporary database 2 as operating procedure data. At this time, the equipment operations that constitute the driving operation procedure data are recorded as equipment operation data. These are in a format that can be searched as associated data on the temporary database 2. Note that a plurality of driving operation procedure data may exist on the temporary database 2 at the same time.

The plant status monitoring device 5 continuously monitors the plant status data and operating procedure data on the temporary database 2, and determines whether each equipment operation in the operating procedure data is executable. Device operations for which the conditions marked * are not satisfied are determined to be impossible to perform. Equipment operation data determined to be infeasible shall be
If the mark indicating that it is not executable is marked (=J, for example, the pump) 4 is out of order, it is determined that the pump 14 starting operation is not executable.

Next, the driving operation condition management device 6 manages execution conditions for generally a plurality of driving operation procedure data existing on the temporary database 2 based on the results of the following processes.

Management of execution conditions consists of determining unexecutable operating procedures and determining operating procedures that include commonly used equipment and equipment that interferes with the usage method.

The determination of an unexecutable driving operation procedure is carried out according to the flowchart 1 shown in FIG.

First, in step S21, equipment operations during the operation procedure on the temporary database 2 are collected and recorded in a queue (memory that stores data in a line), and in step S22
to retrieve the device operation at the head of the queue, and then proceed to step 8.
At step 23, it is determined whether the operation has already been executed.

For device operations that have not been executed, step S24
Determine whether the operation conditions are marked * or whether they hold true.

In the unlikely event that any of the conditions marked with * are not met,
Since that operation cannot be easily executed, step S25
Then, the equipment operation and the driving operation procedure including the equipment operation are determined to be poor performance, and the result is recorded in the driving operation procedure on the temporary database 2.

Next, in step S26, the device operation at the head of the queue is deleted, and in step S27, it is determined whether the queue is empty or not. If it is empty, the process returns to step 522, and if it is empty, the process ends.

If pump 14 fails, the reactor injection procedure and boule 11 cooling procedure are determined to be infeasible.

Determination of the operation F'z operation procedure including equipment that is commonly used and equipment that interferes with the method of use is carried out according to the flowchart 1 shown in FIG.

First, in step S31, all executable device operation data is extracted from the temporary database 2, and at the same time, the device operation pigs extracted in step S32 collect the same operation target devices, and create a set of device operation data. Queue the set.

Next, in step S'33, the first set is taken out from the queue, and in step S34, the device operation data included in the set taken out is classified according to the operation content for the target device.

Next, in step S'35, a driving procedure that includes device operation data that involves the same operation for the target device is determined to be a driving procedure that includes commonly used devices.

Next, in step S'36, a driving operation procedure that includes device operation data that involves different operations for the target device is determined as a driving operation procedure that includes a device that causes interference in the usage method.

Next, in step S37, the first set is deleted from the queue, and in step S38, if the queue is not empty, the process returns to step 83B, and if it is empty, the process is ended. Through this processing, it is determined that the reactor injection procedure and the pool 1 cooling procedure are operational procedures that include equipment that is commonly used with respect to the pump] 4 and valve 13, and equipment that causes conflict in usage regarding valve 16. It is determined that the driving operation procedure includes

Do the above two processes periodically according to changes in the plant status? By doing so, it is possible to determine the execution capability and interference of the driving operation procedure derived by the driving operation procedure derivation device 3.

〔Effect of the invention〕

As explained below, according to the present invention, it is easy to develop a system for deriving plant operation 1, Y, and operation procedures, and the feasibility and interference of operation procedures can be determined in real time during application. It is possible to judge.

[Brief explanation of drawings]

FIG. 1 is a configuration diagram showing a plant operating procedure management device according to an embodiment of the present invention, FIG. 2 is a flowchart showing a process for determining operating procedures including commonly used equipment,
FIG. 3 is a flowchart 1-1 showing a determination process for operating procedures including devices that interfere with usage. FIG. 4 is a system diagram showing a residual slag removal system in a boiling water nuclear power plant as an applied example. DESCRIPTION OF SYMBOLS 1... Plant signal input device, 2... Temporary database, 3... Operating procedure derivation device, 4... Plant database, 5... Plant status monitoring device, 6...
Driving operation condition management device.

Claims (1)

[Claims] A plant signal input device that converts plant process signals input online to obtain plant status data; and a temporary database that records the plant status data, plant operation procedure data, and related information. , a plant database that records conditions for operating equipment constituting the plant; and a plant database that records conditions for operating equipment constituting the plant, based on plant status data from the temporary database and conditions from the plant database in order to achieve operational targets given from the outside. A driving operation procedure that derives a possible driving operation procedure and records each equipment operation that constitutes the derived driving operation procedure in the temporary database as driving operation procedure data and equipment operation data in relation to its execution conditions. a derivation device, and monitors the plant status data on the temporary database, and determines whether the execution condition for the equipment operation represented by the individual equipment operation data constituting the plant operation procedure data in the temporary database is satisfied or not; A plant condition monitoring device that records the results and target equipment operation data in a temporary database; and a plant status monitoring device that records the results and target equipment operation data in a temporary database; 1. A plant operation procedure management device comprising: an operation condition management device that determines the feasibility of plant operation procedure data set and determines interference between a plurality of plant operation procedure data.