CN112863719B - Design method for continuous steps in digital operation regulations of nuclear power plant - Google Patents
Design method for continuous steps in digital operation regulations of nuclear power plant Download PDFInfo
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21D—NUCLEAR POWER PLANT
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The invention relates to a design method of continuous steps in a digital operation rule of a nuclear power plant, which comprises the following steps: determining key elements of a man-machine interface for executing continuous steps according to the characteristics and the execution mode of the continuous steps; establishing a continuous step execution flow according to the key elements of the man-machine interface, and determining detailed functions of the key elements in man-machine interface design; determining display and control elements on an operation interface according to the human-machine interface function; ) The final human interface for performing successive steps is determined based on the human interface functions and display and control elements, in combination with the overall design of the master control room digital operating protocol. The invention can effectively process the operation requirement of continuous steps and realize the man-machine interaction function of continuous steps in operators and digital regulations, thereby improving the treatment efficiency of abnormal and accident operation regulations and enhancing the safety of the nuclear power plant under abnormal and accident working conditions.
Description
Technical Field
The invention relates to a nuclear power plant design technology, in particular to a design method of continuous steps in a digital operation rule of a nuclear power plant.
Background
During abnormal and accident operation conditions of a pressurized water reactor nuclear power plant, operators need to use an abnormal operation protocol (Abnormal Operating Procedure, AOP) and an accident operation protocol (Emergency Operating Procedure, EOP). The abnormal and accident operation rules and measures thereof belong to the third line of defense of the nuclear power plant in the deep defense principle, and are means for relieving accidents and limiting the consequences of the accidents.
At present, unlike a nuclear power plant using a traditional master control room, the newly-built nuclear power plant adopts implementation digital operation rules on the basis of a full digital instrument control technology (Digital Control System, DCS system). The scientific and reasonable digital procedure man-machine interface is beneficial to the operator to process the operation procedure correctly and efficiently. The rationality of the design of the man-machine interface of the digital procedure is characterized in that the design is required to be adapted to the format, the content and the use characteristics of the running procedure so as to accord with the reading and operating habits of operators, and the advantage of the computer system on information integration and data calculation is required to be utilized as much as possible so as to improve the operating efficiency of the procedure.
The abnormal and accident operation rules of the nuclear power plant consist of a series of operation steps, and a preset operation strategy is completed through sequential collocation and operation division so as to realize an operation target, alleviate the consequences of abnormal working conditions and accident working conditions and ensure the safety of the unit. The operation step may include one or more types of content such as monitoring of parameter information, judgment of conditions, and operation of the device. When the operator completes execution according to the step instruction, the step should be marked as complete. In abnormal and accident operation regulations, there is a special class of operating steps called "continuous steps" (which may be different in different nuclear power plants). The successive steps can be subdivided into non-sequential steps, persistent steps and periodic steps. A common feature of the continuous steps is that they cannot be simply marked and skipped after they are performed, and it may be necessary for the operator to continue focusing on and operating the continuous steps until the termination conditions specified in the continuous steps are satisfied.
Therefore, the continuous step execution has various characteristics of uncertainty of meeting the conditions, long-term occupation of the operation authority, uncertainty of the completion time and the like, and the method provides great challenges for the digital design of the operation procedure. If the problem of continuous steps cannot be solved, the operation of the main line strategy of the abnormal and accident operation rules can be influenced, and even the safety of the nuclear power plant is endangered.
Disclosure of Invention
The invention aims to provide a design method of continuous steps in a digital operation procedure of a nuclear power plant, so that the operation requirements of the continuous steps are effectively processed, and the man-machine interaction function of the continuous steps in the digital procedure of an operator is realized, so that the processing efficiency of the abnormal and accident operation procedure is improved, and the safety of the nuclear power plant under abnormal and accident working conditions is enhanced.
The technical scheme of the invention is as follows: a method for designing successive steps in a digitized operating protocol of a nuclear power plant, comprising:
(1) Determining key elements of a man-machine interface for executing continuous steps according to the characteristics and the execution mode of the continuous steps;
(2) Establishing a continuous step execution flow according to the key elements of the man-machine interface, and determining detailed functions of the key elements in man-machine interface design;
(3) Determining display and control elements on an operation interface according to the human-machine interface function;
(4) The final human interface for performing successive steps is determined based on the human interface functions and display and control elements, in combination with the overall design of the master control room digital operating protocol.
Further, the design method of continuous steps in the digital operation procedure of the nuclear power plant as described above, wherein key elements of the man-machine interface in the step (1) include: determining condition judgment in continuous steps, managing authority in continuous steps, listing in continuous steps, and completing condition judgment in continuous steps.
Further, the design method of the continuous steps in the digital operation procedure of the nuclear power plant as described above, the continuous step execution flow in the step (2) includes:
(2-1) adding the continuous steps to a continuous step list, and releasing the operation authority;
(2-2) the operator obtaining the operation authority, calling out the continuous steps from the continuous step list and performing the operation and the continuous attention;
(2-3) determining whether the successive steps are completed, if so, entering (2-4), if not, returning (2-2);
(2-4) removing the completed consecutive steps from the consecutive step list, and releasing the operation authority of the step.
Further, the design method of continuous steps in the digital operation procedure of the nuclear power plant as described above, and the detailed functions in the step (2) include:
automatically or manually judging whether the continuous step determining condition is met according to the current state parameters of the unit;
according to the continuous step determining condition judging result, automatically or manually adding the continuous step into a continuous step list;
when the continuous steps are added into the continuous step list, the operation authority of the step is automatically or manually released;
when an operator calls out continuous steps from the continuous step list, the operator automatically or manually acquires operation authority;
in different operator workstations, the information of the continuous step list should be synchronized in real time;
according to the current state parameters of the unit, automatically or manually judging whether the incomplete continuous step completion condition in the continuous step list is met;
according to the judging result of the continuous step completion condition, automatically or manually removing the continuous steps from the continuous step list;
the operating rights of the step are automatically or manually released when the continuous step is removed from the continuous step list.
Further, according to the design method of the continuous steps in the digital operation rules of the nuclear power plant, the display and control elements in the step (3) comprise general elements and special elements, wherein the general elements comprise continuous step content display, unit parameter display and step operation authority management control, and the special elements comprise continuous step adding control, continuous step list display and continuous step completion control.
The beneficial effects of the invention are as follows:
1. according to the invention, through analyzing the characteristics and the execution mode of the continuous steps, the function of the continuous step man-machine interface can be ensured to meet the use requirement of operators;
2. by refining the key elements of the continuous steps, the method can ensure that the man-machine interface of the continuous steps is concise and effective, and avoid unnecessary functions or information from reducing the execution efficiency of the continuous steps;
3. the detailed function of the man-machine interface is determined by analyzing the continuous step operation flow chart, so that the continuity of continuous step execution can be ensured, and the omission of functions is avoided;
4. the display and control elements are determined according to the human-computer interface function, so that the human-computer interface is friendly and perfect, and an operator can quickly acquire information and execute corresponding actions.
Drawings
FIG. 1 is a flow chart of a design method of continuous steps in a digitized operating protocol of a nuclear power plant according to the invention;
FIG. 2 is a schematic diagram of a continuous step execution flow of the human-machine interface of the present invention;
FIG. 3 is a diagram illustrating an exemplary continuous-step human-machine interface in accordance with an embodiment of the present invention.
Description of the embodiments
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The invention provides a design method and an implementation scheme of a man-machine interface for executing continuous steps, which can effectively process the operation requirements of the continuous steps and realize man-machine interaction functions of operators and the continuous steps in a digitizing procedure. As shown in fig. 1, the man-machine interface design method performed in successive steps includes the following:
1) Determining key elements of a man-machine interface according to continuous step characteristics and execution modes
a) The successive steps are identical in form to the general steps, all requiring the operator to monitor the status of a parameter or to operate a device, with the difference that: the general steps, whether the parameter status and the operation of the equipment reach the expected result or not, will be transferred to the next step to be continuously executed, and the continuous steps will supplement the requirements, such as: "once … … (condition is satisfied), the present step is executed again," or "continue adjusting … … until … … (condition is satisfied)", or "check every … … (time interval), if (condition is satisfied), the … …" and the like are executed. These requirements are essentially a conditional determination, based on which it is determined whether this step is performed in terms of successive steps, which is an important feature that distinguishes successive steps from general steps, thus yielding the first key element: and (5) determining condition judgment in a continuous step.
b) After determining the continuous steps, in order to avoid affecting the execution efficiency of the overall strategy of the procedure, the operator executing the procedure should go to the subsequent steps to continue operation, and the continuous steps are paid attention to and completed by other operators, which involves the problem of operation authority. In the digital procedure, in order to avoid misoperation, an operation right is set for the operation procedure, only operators which acquire the operation right can operate the procedure, and other operators which do not acquire the operation right can only browse the procedure content. In order to ensure smooth execution of the continuous steps, after the continuous steps are determined, the operation authority of the step should be released, and operators who subsequently execute the continuous steps can acquire the operation authority. Thus, a second key element is obtained: and (5) performing rights management continuously.
c) In a running procedure, there are often a plurality of continuous steps, and the continuous steps are independent of each other, so that during the execution of the procedure, a plurality of continuous steps may be accumulated and need to be concerned, so that an unfinished continuous step list needs to be established, so as to ensure that an operator cannot miss. Thus, a third key element is obtained: a list of consecutive steps.
d) After the supplementary operation of the continuous steps is performed, a condition judgment is required, if the condition is satisfied, the continuous steps are completed, the operator does not need to pay attention any more, and if the condition is not satisfied, the operator needs to keep paying attention continuously. Thus, a fourth key element is obtained: and (5) finishing condition judgment in a continuous step.
2) According to key elements of the human-computer interface, a continuous step execution flow is established, and detailed functions of each element in the human-computer interface design are determined
According to the key elements determined in 1), combined with the continuous step execution feature, the operation flow of the continuous step can be obtained as follows, see fig. 2:
2-1) adding the continuous steps into a continuous step list, and releasing the operation authority;
2-2) the operator obtains the operation authority, calls out the continuous steps from the continuous step list and carries out operation and continuous attention;
2-3) judging whether the continuous steps are completed or not, if the continuous steps are completed, entering 2-4), and if the continuous steps are not completed, returning to 2-2);
2-4) removing the completed consecutive steps from the list of consecutive steps and releasing the operation authority of the step.
By analyzing the continuous operation flow and combining the man-machine interaction characteristics of the master control room operator workstation, the following man-machine interface functions can be determined:
automatically or manually judging whether the continuous step determining condition is met according to the current state parameters of the unit;
according to the continuous step determining condition judging result, automatically or manually adding the continuous step into a continuous step list;
when the continuous steps are added into the continuous step list, the operation authority of the step is automatically or manually released;
when an operator calls out continuous steps from the continuous step list, the operator automatically or manually acquires operation authority;
in different operator workstations, the information of the continuous step list should be synchronized in real time;
according to the current state parameters of the unit, automatically or manually judging whether the incomplete continuous step completion condition in the continuous step list is met;
according to the judging result of the continuous step completion condition, automatically or manually removing the continuous steps from the continuous step list;
the operating rights of the step are automatically or manually released when the continuous step is removed from the continuous step list.
3) Determining display and control elements on an operator interface based on human interface functionality
From the man-machine interface functions determined in 2), the relevant display and control elements on the operator workstation interface (some of which are identical to those required for general step execution, labeled "general elements", and the other of which are specific elements for continuous step execution, labeled "specific elements"):
continuous step content display (universal element);
unit parameter display (general elements);
step operation rights management control (general element);
adding a continuous step control (special element);
continuous step list display (dedicated element);
the control (special element) is completed in successive steps.
4) The man-machine interface for executing continuous steps is finally obtained according to the man-machine interface functions determined in the step 2) and the display and control elements determined in the step 3) by combining the overall design (such as the overall layout of the man-machine interface, the control and display function setting and the like) of the digital operation rules of the main control room.
Examples
The design method of the present invention will be described below by taking a typical continuous step as an example in a certain accident protocol of a nuclear power plant. The typical continuous steps are:
the reactor coolant pressure is monitored and once the pressure drops below a set value, the two low pressure amp pumps are restarted.
The continuous step determination conditions of the step are as follows: the reactor coolant pressure is greater than or equal to [ constant ].
When the operator performs this step, if the pressure is higher than the constant value, it is necessary to add it to the continuous step list and release the operation authority.
An operator arranged to perform successive steps acquires operating rights and will continue to pay attention to reactor coolant pressure.
The continuous step completion conditions of this step are: the reactor coolant pressure is below [ constant ], and two low pressure amp pumps have been started.
When it is observed that the pressure has fallen below a fixed value, the operator manually activates the two low pressure safety injection pumps, the continuous steps are completed, removed from the continuous step list, and the operating rights are released.
The man-machine interface form related to continuous step execution is obtained by combining the design characteristics of the digital regulation system of the nuclear power plant and is shown in figure 3.
The reference numerals in fig. 3 denote continuous-step human-machine interface display and control elements, specifically:
1: the procedure management button is used for acquiring and releasing the step operation authority;
2: the 'add continuous step' button is clicked to add the current step to the continuous step list;
3: the picture menu can be linked to a picture corresponding to the step, and is used for acquiring the pressure information of the reactor coolant and controlling the low-pressure safety injection pump;
4: continuously displaying the content;
5: the continuous step list can display the continuous steps which need to be concerned currently, and can be opened through links to display specific contents;
6: clicking on the "continuous step complete" button removes the selected continuous step from the manifest.
It will be evident to those skilled in the art that the inventive method is not limited to the details of the foregoing illustrative embodiments, and that the present method may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the inventive method being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (2)
1. A method for designing successive steps in a digitized operating protocol of a nuclear power plant, comprising:
(1) Determining key elements of a man-machine interface for executing continuous steps according to the characteristics and the execution mode of the continuous steps; key elements of the man-machine interface include: determining condition judgment, managing authority management, list and finishing condition judgment;
(2) Establishing a continuous step execution flow according to the key elements of the man-machine interface, and determining detailed functions of the key elements in man-machine interface design; the continuous step execution flow comprises the following steps:
(2-1) adding the continuous steps to a continuous step list, and releasing the operation authority;
(2-2) the operator obtaining the operation authority, calling out the continuous steps from the continuous step list and performing the operation and the continuous attention;
(2-3) determining whether the successive steps are completed, if so, entering (2-4), if not, returning (2-2);
(2-4) removing the completed consecutive steps from the consecutive step list and releasing the operation authority of the step;
(3) Determining display and control elements on an operation interface according to the human-machine interface function; the display and control elements comprise general elements and special elements, wherein the general elements comprise continuous step content display, unit parameter display and step operation authority management controls, and the special elements comprise continuous step adding controls, continuous step list display and continuous step completion controls;
(4) The final human interface for performing successive steps is determined based on the human interface functions and display and control elements, in combination with the overall design of the master control room digital operating protocol.
2. The method for designing successive steps in a digitized operating protocol of a nuclear power plant according to claim 1, wherein the detailed functions in step (2) include:
automatically or manually judging whether the continuous step determining condition is met according to the current state parameters of the unit;
according to the continuous step determining condition judging result, automatically or manually adding the continuous step into a continuous step list;
when the continuous steps are added into the continuous step list, the operation authority of the step is automatically or manually released;
when an operator calls out continuous steps from the continuous step list, the operator automatically or manually acquires operation authority;
in different operator workstations, the information of the continuous step list should be synchronized in real time;
according to the current state parameters of the unit, automatically or manually judging whether the incomplete continuous step completion condition in the continuous step list is met;
according to the judging result of the continuous step completion condition, automatically or manually removing the continuous steps from the continuous step list;
the operating rights of the step are automatically or manually released when the continuous step is removed from the continuous step list.
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