Power circuit and load isolation auxiliary platform for nuclear power plant

Abstract

The invention provides a nuclear power plant power circuit and load isolation auxiliary platform, which comprises a standard state input module used for providing nuclear power plant standard state input specified by a user input operation technical specification; the power supply and load object construction module is used for constructing an object from a power supply to a load; the external information interface module is used for inputting the actual available state of the power supply and the switch and the current standard state of the nuclear power plant from the control system of the nuclear power plant; the logic calculation module is used for calculating the number of unavailable devices; the simulation mapping module is used for providing a function of simulating and isolating each system and equipment of the power circuit by a user; and the man-machine interaction module is used for input and output of the corresponding module. According to the invention, unavailability of the power circuit equipment and the load of the nuclear power plant is automatically analyzed and counted, so that a large amount of drawing consulting work and errors caused by human errors are avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of nuclear power plant operation and maintenance, and in particular to a nuclear power plant power circuit and load isolation auxiliary platform. Background Art

[0002] According to the needs of preventive and corrective maintenance, nuclear power plants need to disconnect and isolate the power circuit components themselves or the corresponding loads, which will cause one or more devices to be unavailable. According to the provisions of the nuclear power plant operation technical specifications, under each standard operating state of the nuclear power plant, the unavailability of each load will lead to corresponding risks in the nuclear power plant system. The nuclear power plant operating unit needs to effectively control the number of these unavailability (I0). The unavailability of nuclear power plant loads can be caused by the unavailability of the equipment itself, the unavailability of its power supply, or the unavailability of the control power supply of its power circuit equipment. When performing isolation, the operating personnel need to consult a large number of relevant drawings for confirmation, which is a huge workload and greatly reduces labor efficiency. In addition, depending on the proficiency of the staff, the calculation results will occasionally be wrong due to ignoring the deeper unavailability state. The current circuit simulation technology focuses on the calculation of circuit stability, which is difficult to match the power supply isolation method of nuclear power plants and is difficult to effectively replace manual auxiliary isolation. Summary of the invention

[0003] The object of the present invention is to provide a nuclear power plant power circuit and load isolation auxiliary platform, which solves the problem of calculating the unavailable quantity specified in the nuclear power operation technical specification due to the isolation or unavailability of nuclear power plant circuits and loads.

[0004] In order to achieve the above object, the present invention provides the following technical solutions:

[0005] A power circuit and load isolation auxiliary platform for a nuclear power plant, comprising:

[0006] The standard state input module is used to provide the user with the standard state input of the nuclear power plant specified in the operation technical specification;

[0007] Power supply and load object building module, used to build objects from power supply to load;

[0008] External information interface module, used to input the actual available status of power supply and switch from the nuclear power plant control system, and the standard status of the current nuclear power plant;

[0009] A logic calculation module, used to calculate the number of unavailable devices;

[0010] The simulation mapping module is used to provide users with the function of simulating and isolating various systems and equipment in the power circuit;

[0011] Human-computer interaction module, used for input and output of corresponding modules.

[0012] Furthermore, the standard state input module is used to provide generation conditions and quantity restrictions that are unavailable in the standard state.

[0013] Furthermore, the power supply includes a plant transformer, an auxiliary transformer, an emergency diesel engine, a battery, etc., and the circuit equipment includes a busbar, an intermediate transformer and a switch.

[0014] Furthermore, the load is a motor and a charger.

[0015] Furthermore, the logic calculation module calculates the number of unavailable equipment and provides a list according to the actual or simulated standard state of the nuclear power plant and in accordance with certain logic.

[0016] Furthermore, after receiving a user request, the simulation mapping module maps and copies a real power circuit for the user independently of the real power circuit state, and displays the modified power circuit state, unavailable information and list display to the user through the logic calculation module.

[0017] Furthermore, the simulation mapping module is used to provide users with an isolation plan for power plant circuit objects in any standard state of the power plant, and provide a reference for formulating equipment operation and maintenance plans in advance in terms of operation plans, production plans and overhaul plans.

[0018] Furthermore, the human-computer interaction module is used to display currently unavailable objects in the form of a circuit diagram and provide unavailable calculation results, or to provide users with simulation of the unavailability of specific objects, display the unavailable objects caused by the simulation state, and provide calculation results.

[0019] Furthermore, the human-computer interaction module is used to provide the input page required by the standard state input module, the object construction page required by the power supply and load object construction module, the power circuit general diagram and unavailable information page, the simulation page and the user management page.

[0020] The nuclear power plant power circuit and load isolation auxiliary platform also includes a user management module for managing user authorization and granting different functions to users of the platform according to different authorization levels.

[0021] Compared with the prior art, the nuclear power plant power circuit and load isolation auxiliary platform provided by the present invention has the following beneficial effects:

[0022] The present invention automatically analyzes and counts the unavailability of power circuit equipment and loads in a nuclear power plant, thereby avoiding a large amount of drawing consulting work and errors caused by human errors.

[0023] Furthermore, the present invention makes it possible for different nuclear power plants and other users who need risk analysis of power circuit equipment and load unavailability to build independent power circuit and load auxiliary isolation systems without repeated development.

[0024] Furthermore, the present invention incorporates the device unavailability caused by controlling the power supply into the system, and further clarifies the mutual influence of power supplies of different columns and different voltage levels.

[0025] Furthermore, the present invention provides a user-independent simulation function, which can be used in different scenarios such as planning and training.

[0026] Furthermore, the present invention allows the addition and removal of devices in an already constructed system to be completed by user operations without modifying the program code.

[0027] Furthermore, the present invention introduces visualization when constructing objects, adopts drag-and-drop and other methods, and what you see is what you get, which is convenient and fast. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 The interface logic relationship diagram between modules provided by the present invention;

[0030] Figure 2 This is a flow chart of the main functions and applications provided by the present invention. DETAILED DESCRIPTION

[0031] The following is further explained in detail through specific implementation methods.

[0032] like Figure 1 As shown, the present invention provides a nuclear power plant power circuit and load isolation auxiliary platform, including a standard state input module, a power supply and load object construction module, a switch state input module, a logic calculation module, a simulation mapping module and a human-computer interaction module. The present invention is a basic platform that allows users to establish power circuits and loads by themselves. Users input restrictions on the unavailability of electrical equipment and load equipment under standard conditions specified in the nuclear power plant operation technical specifications. The platform displays and calculates the types and quantities of unavailable equipment under specific simulated conditions, and lists a list of unavailable equipment. Specifically, the modules of the present invention are as follows:

[0033] Standard state input module: as the basis for building a specific nuclear power plant system, it inputs the definition of unavailability of nuclear power plant systems or equipment under the standard state specified in the operation technical specification;

[0034] Power supply and load object construction module: used to construct objects from power supply to load. Power supplies include plant transformers, auxiliary transformers, emergency diesel engines, batteries, etc. Circuit equipment includes busbars, intermediate transformers, switches (circuit breakers / contactors), etc. Loads include motors and chargers, etc.

[0035] External information interface module: used to input the actual available status of power supply and switch from the nuclear power plant control system, and the current standard status of the nuclear power plant;

[0036] Logical calculation module: According to the actual or simulated standard state of the nuclear power plant and certain logic, the number of unavailable equipment is calculated and a list is given;

[0037] Simulation mapping module: provides users with the function of simulating and isolating various systems and equipment in the power circuit;

[0038] Human-computer interaction module: Provides a circuit diagram to display currently unavailable objects and gives unavailable calculation results, or provides users with simulation of specific object unavailability, displays unavailable objects caused by the simulation status, and gives calculation results.

[0039] Among them, the standard state input module is the basic standard for users to complete the application of the present invention. This module provides users with the input of the standard state input of the nuclear power plant specified in the operation technical specification and the quantity limit that is not available under the standard state. The input form fields are shown in Table 1:

[0040] Table 1 Input fields

[0041]

[0042] The power supply and load object construction module allows users to build a complete power supply system, and divides the equipment in the nuclear power plant power supply system into three categories, namely power supply, circuit equipment and load. The construction of the power supply object requires at least the following attributes: equipment code, equipment name, power type, downstream switch, control power supply, the unavailable level of the equipment under each standard state and the current available state of the equipment (operation, standby, isolation); the construction of the circuit equipment requires at least the following attributes: equipment code, equipment name, equipment type (bus, circuit breaker, contactor, intermediate transformer), upstream switch or bus, downstream switch or bus, control power source, the unavailable level of the equipment under each standard state and the current available state of the equipment (operation, standby, isolation), and the construction of the load requires at least the following attributes: equipment code, equipment name, upstream switch, the unavailable level of the equipment under each standard state and the current available state of the equipment (operation, standby, isolation). The module is displayed on the page of the human-computer interaction module, providing users with a visual power circuit construction method. Users can combine other attributes by dragging, pulling, and dragging to build a complete nuclear power plant power circuit system.

[0043] The external information interface module accepts input from other management systems of the nuclear power plant, modifies the "current equipment availability status (operation, standby, isolation)" attributes of various circuit objects and the current standard status of the nuclear power plant according to the actual status, and provides users with a standard information interface to comprehensively obtain the status information of the power circuit.

[0044] The functions provided by the standard status input module, the power and load object building module and the external information interface module and the user input attached thereto, the above-mentioned logic calculation module provides a logic calculation method for unavailable equipment, including: classification, merging, list output, (multiple) upstream power query, (multiple) downstream load query. It achieves a complete improvement in user work efficiency and avoids problems such as querying a large number of drawings and calculation errors.

[0045] After receiving the user's request, the simulation mapping module maps and copies a real power circuit for the user independently of the real power circuit status, allowing the user to modify the "current equipment availability status (operation, standby, isolation)" attribute of the power circuit object, and displays the modified power circuit status, unavailable information and list display to the user through the logic calculation module. The simulation mapping module provides users with isolation plans for power plant circuit objects in any standard state of the power plant, and provides operation plans, production plans and overhaul plans for reference in the early formulation of equipment operation and maintenance plans.

[0046] The human-computer interaction module provides a page for each of the other modules requiring human-computer interaction mentioned above, so as to complete the input and output functions of the corresponding modules.

[0047] Furthermore, the nuclear power plant power circuit and load isolation auxiliary platform also includes a user management module. The present invention technically ensures that control instructions cannot be sent to the nuclear power plant system and is only used as an auxiliary application for isolation. In addition, the user of the present invention adopts three-level authority management.

[0048] like Figure 1 As shown, the present invention establishes a general diagram of the power circuit equipment and load of a nuclear power plant through the power supply and load object construction module, and combines with the external information interface module to display the dynamic circuit general diagram to the user through different colors. According to the aforementioned circuit general diagram, combined with the equipment unavailability restrictions formulated by the standard state input module, the logic calculation module calculates the current equipment unavailability information and list through certain logic, and gives a reminder to the user. The simulation module can copy the aforementioned dynamic circuit general diagram, and allow the user to set the status of all circuit equipment objects, and output the results under the simulation state through the logic calculation module. The human-computer interaction module provides the input page required by the standard state input module, the object construction page required by the power supply and load object construction module, the power circuit general diagram and unavailability information page, the simulation page and the user management page.

[0049] like Figure 2 As shown, when using the present invention, the user inputs the operation technical specification requirements and actual power circuit equipment of a specific power plant through the standard state input module and the power and load object construction module page, and the actual state of the power plant equipment input by the external information interface module can be displayed by the unavailable result of the current state of the present invention, and the unavailable result display under the simulation state can also be obtained by simulating the operation on the simulation page. During the use process, the user can also flexibly configure the technical specification due to the upgrade or change of the equipment increase or decrease through the standard state input module and the power and load object construction module.

[0050] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A power circuit and load isolation auxiliary platform for a nuclear power plant, characterized in that: include: The standard state input module is used to provide the user with the standard state input of the nuclear power plant specified in the operation technical specification; Power supply and load object building module, used to build objects from power supply to load; External information interface module, used to input the actual available status of power supply and switch from the nuclear power plant control system, and the standard status of the current nuclear power plant; A logic calculation module, used to calculate the number of unavailable devices; The simulation mapping module is used to provide users with the function of simulating and isolating various systems and equipment in the power circuit; Human-computer interaction module, used for input and output of corresponding modules.

2. The power circuit and load isolation auxiliary platform for nuclear power plants according to claim 1, characterized in that: The standard state input module is used to provide unavailable conditions and quantity restrictions under the standard state.

3. The power circuit and load isolation auxiliary platform for nuclear power plants according to claim 1, characterized in that: The power supply includes a plant transformer, an auxiliary transformer, an emergency diesel engine, a battery, etc., and the circuit equipment includes a busbar, an intermediate transformer and a switch.

4. The nuclear power plant power circuit and load isolation auxiliary platform according to claim 1, characterized in that: The loads are a motor and a charger.

5. The power circuit and load isolation auxiliary platform for nuclear power plants according to claim 1, characterized in that: The logic calculation module calculates the number of unavailable equipment and gives a list according to the actual or simulated standard state of the nuclear power plant and in accordance with certain logic.

6. The power circuit and load isolation auxiliary platform for nuclear power plants according to claim 1, characterized in that: After receiving a user request, the simulation mapping module maps and copies a real power circuit for the user independently of the real power circuit state, and displays the modified power circuit state, unavailable information and list display to the user through the logic calculation module.

7. The power circuit and load isolation auxiliary platform for nuclear power plants according to claim 1, characterized in that: The simulation mapping module is used to provide users with an isolation plan for power plant circuit objects in any standard state of the power plant, and to provide a reference for formulating equipment operation and maintenance plans in advance in terms of operation plans, production plans and overhaul plans.

8. The power circuit and load isolation auxiliary platform for nuclear power plants according to claim 1, characterized in that: The human-computer interaction module is used to display the currently unavailable objects in the form of a circuit diagram and give the unavailable calculation results, or to provide users with simulation of the unavailability of specific objects, display the unavailable objects caused by the simulation state, and give the calculation results.

9. The nuclear power plant power circuit and load isolation auxiliary platform according to claim 1, characterized in that: The human-computer interaction module is used to provide the input page required by the standard state input module, the object construction page required by the power supply and load object construction module, the power circuit general diagram and unavailable information page, the simulation page and the user management page.

10. The nuclear power plant power circuit and load isolation auxiliary platform according to claim 1, characterized in that: It also includes a user management module for managing user authorization and granting different functions of the platform according to different authorization levels.

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