A system and method for automatically generating a control measurement cable termination diagram for a nuclear power plant

Abstract

The present application relates to a kind of automatically generating nuclear power plant control measurement cable termination chart system and method, the system includes terminal bank signal matching module, terminal bank signal analysis module, cable core number cross section selection and cable verification module.The system is with electrical typical termination table and instrument control / distributed control system termination table as input, with engineering cable database as foundation, by the association matching and classification of terminal bank signal, determine cable root number and cable core number, automatically output cable termination chart, cable system chart and cable inventory.The present application can effectively avoid human error in termination design, realize control measurement cable automatic selection, termination automatic completion, can realize data reuse, greatly improve the efficiency and accuracy of termination design.

Description

Technical Field

[0001] This invention relates to a design technology for the termination of control and measurement cables in nuclear power plants, specifically to a system and method for automatically generating termination diagrams of control and measurement cables in nuclear power plants based on terminal block signal types. Background Technology

[0002] The integrated electrical design platform integrates design software from various electrical disciplines. The platform facilitates data exchange between upstream and downstream disciplines through data interface modules, forming a complete load database. After the electrical discipline completes the primary design, it performs secondary electrical design, generating a termination information table based on typical secondary electrical diagrams. The instrumentation and control discipline / distributed control system manufacturer generates a distributed control system-side termination information table based on the logic diagrams and analog quantity relationship diagrams designed by the electrical discipline. The main task of control and measurement cable termination design is to connect the termination information tables on the electrical panel / cabinet side and the distributed control system cabinet side. The main work of termination design includes listing control and measurement cables, generating a control and measurement cable system diagram, and generating a control and measurement cable connection diagram.

[0003] Currently, the termination design of control and measurement cables for electrical systems in nuclear power plants mainly relies on manual selection of control and measurement cable types, verification of cable voltage drop, drawing of control and measurement cable system diagrams, and generation of control and measurement cable connection diagrams, based on terminal block information from electrical panel cabinets, distributed control system cabinets, and signal names. The sheer volume of control and measurement cables related to electrical panels and cabinets in nuclear power plants makes manual listing highly prone to errors. Furthermore, the control and measurement cable list, control and measurement cable system diagram, and control and measurement cable connection diagram contain repetitive information, leading to repetitive work and low efficiency when completed manually. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a system and method for automatically generating termination diagrams of control and measurement cables for nuclear power plants, thereby improving the efficiency and accuracy of termination design for control and measurement cables in nuclear power plants.

[0005] The technical solution of the present invention is as follows: A system for automatically generating control and measurement cable termination diagrams for nuclear power plants, comprising:

[0006] The terminal block signal matching module categorizes the input / output signals in the typical termination information table associated with the secondary diagram into two types: local system and remote system. It uses the input / output signal point name as a unique identifier to associate information on both sides of the input / output signal. Furthermore, it uses the input / output signal point name as a unique identifier to perform the association and matching of termination information on the distributed control system side.

[0007] The terminal block signal analysis module classifies signals according to their input / output signal attributes, determines the number of common terminals among similar signals, and generates the number of similar signals as a basis for cable selection based on the determination results.

[0008] The cable core count and cross-section selection and cable verification module selects the number of cables based on the terminal block signal classification results and verifies the rationality of the cable selection. The results are then presented in cable termination diagrams, cable lists, and cable system documentation. Figure 3 Presented in various forms.

[0009] Furthermore, in the system for automatically generating nuclear power plant control and measurement cable termination diagrams as described above, in the terminal block signal matching module, the input / output signals of the local system are encoded into input / output signal point names in the form of unit number + local electrical system number + input / output signal tag number; the input / output signals belonging to the opposite system are matched by the input / output signal tag number + power supply routing relationship, and then inherit the point name encoding of the input / output signals from the opposite system.

[0010] Furthermore, in the system for automatically generating control and measurement cable termination diagrams for nuclear power plants as described above, the signal attributes in the terminal block signal analysis module include the component of the signal's endpoint device and the location of the signal's endpoint device; the type of signal is analog or digital; signals with the same endpoint device component and the same signal type are grouped into the same category, analog signals of the same type do not have a common terminal, and digital signals of the same type have a common terminal.

[0011] Furthermore, in the system for automatically generating control and measurement cable termination diagrams for nuclear power plants as described above, the principle for selecting the number of cables based on the terminal block signal classification results in the cable core cross-section selection and cable verification module is as follows: under the same signal classification, a cable contains only one common terminal; if a terminal block has multiple common terminals, a second cable is split when a second common terminal is encountered.

[0012] The selection method for the number of cable cores is as follows:

[0013] X = S × 2 - C + 1

[0014] In the formula, X represents the minimum number of cores in the control cable;

[0015] S represents the number of input / output signals of the same category;

[0016] C represents the number of common terminals;

[0017] Select control and measurement cables with a core count greater than or equal to the minimum core count from the engineering cable database;

[0018] The engineering cable database contains cable type, impedance, number of cores, and whether it is a fire-resistant cable. Each type of cable is identified by a unique code in the database.

[0019] A method for automatically generating control and measurement cable termination diagrams for nuclear power plants includes the following steps:

[0020] (1) Divide the input / output signals in the typical termination information table of the quadratic graph into two categories: local system and opposite system. Use the input / output signal point name as a unique identifier to associate the information on both sides of the input / output signal; and use the input / output signal point name as a unique identifier to perform the association and matching of the termination information on the distributed control system side.

[0021] (2) Classify the signals according to their input / output attributes, determine the number of common terminals in the same type of signals, and generate the number of signals of the same type based on the determination results as the basis for cable selection;

[0022] (3) Select the number of cables based on the terminal block signal classification results, and verify the rationality of the cable selection. Present the results in the cable termination diagram, cable list, and cable system documentation. Figure 3 Presented in various forms.

[0023] Furthermore, in the method for automatically generating nuclear power plant control and measurement cable termination diagrams as described above, in step (1), the input / output signals of the local system are encoded into input / output signal point names in the form of unit number + local electrical system number + input / output signal tag number; the input / output signals belonging to the opposite system are encoded into point names of the input / output signals by the opposite system after signal matching is completed through input / output signal tag number + power supply routing relationship.

[0024] Furthermore, in the method for automatically generating control and measurement cable termination diagrams for nuclear power plants as described above, in step (2), the signal attributes include the components of the signal's endpoint device and the location of the signal's endpoint device; the signal type is analog or digital; signals with the same components of the signal's endpoint device and the same signal type are grouped into the same category, analog signals of the same type do not have a common terminal, and digital signals of the same type have a common terminal.

[0025] Furthermore, in the method for automatically generating control and measurement cable termination diagrams for nuclear power plants as described above, in step (3), the principle for selecting the number of cables based on the terminal block signal classification results is: under the same signal classification, a cable contains only one common terminal; if a terminal block has multiple common terminals, then a second cable is split when a second common terminal is encountered.

[0026] The selection method for the number of cable cores is as follows:

[0027] X = S × 2 - C + 1

[0028] In the formula, X represents the minimum number of cores in the control cable;

[0029] S represents the number of input / output signals of the same category;

[0030] C represents the number of common terminals;

[0031] Select control and measurement cables with a core count greater than or equal to the minimum core count from the engineering cable database.

[0032] Furthermore, in the method for automatically generating control and measurement cable termination diagrams for nuclear power plants as described above, step (3) involves verifying the rationality of cable selection based on the terminal block signal classification results to check whether the voltage drop limit requirement for the control loop to operate without malfunction is met, and whether the voltage and current measurement loops meet the accuracy limit requirements.

[0033] The beneficial effects of this invention are as follows: The termination design method described in this invention can effectively avoid human errors in termination design, enable automatic selection of control and measurement cables, and automatically complete termination. It also allows for data reuse, greatly improving the efficiency and accuracy of termination design. In the termination design of control and measurement cables in nuclear power plants, adopting this design method can significantly shorten the engineering design cycle, improve the quality of design results, and achieve digital delivery. Attached Figure Description

[0034] Figure 1 This is a flowchart illustrating the termination design function of the present invention.

[0035] Figure 2 This is a flowchart of the terminal block signal matching process of the present invention;

[0036] Figure 3 This is a flowchart illustrating the data structure and classification of terminal block signal types in this invention. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0038] This invention provides a system for automatically generating nuclear power plant control and measurement cable termination diagrams based on terminal block signal types. The system includes a terminal block signal matching module, a terminal block signal analysis module, and a cable core count and cross-section selection and verification module. Taking typical electrical termination tables and instrumentation / distributed control system termination tables as inputs, and based on an engineering cable database, the system automatically outputs cable termination diagrams, cable system diagrams, and cable lists.

[0039] The engineering cable database contains cable type, impedance, number of cores, and whether it is a fire-resistant cable. Each type of cable is identified by a unique code in the database. The termination diagram design system is implemented through computer programming, allowing for multiple design outputs in different formats from a single design.

[0040] Based on the above system architecture, the present invention provides a method for automatically generating control and measurement cable termination diagrams for nuclear power plants, as follows: Figure 1 As shown, it includes the following steps:

[0041] (1) In the terminal block signal matching module, the input / output signals in the typical termination information table associated with the secondary diagram are divided into two categories: the local system and the opposite system. The input / output signal point name is used as a unique identifier to associate the information on both sides of the input / output signal; and the termination information of the distributed control system side is associated and matched using the input / output signal point name as a unique identifier.

[0042] (2) In the terminal block signal analysis module, the signals are classified according to the input / output signal attributes, the number of common terminals of the signals in the same category is determined, and the number of signals in the same category is generated based on the determination result as the basis for cable selection;

[0043] (3) In the cable core count and cross-section selection and verification module, select the number of cables based on the terminal block signal classification results, and verify the rationality of the cable selection. Present the results in the cable termination diagram, cable inventory, and cable system documentation. Figure 3 Presented in various forms.

[0044] The terminal block signal matching process of the terminal block signal matching module is as follows: Figure 2 As shown, the input / output signals in the typical termination information table associated with the secondary diagram are divided into two categories: the local system and the remote system. Input / output signals of the local system are encoded into input / output signal name in the format of unit number + local electrical system number + input / output signal tag number. Input / output signals belonging to the remote system are not initially encoded into input / output signal name; after signal matching is completed through input / output signal tag number + power supply routing relationship, the point name encoding of the input / output signal from the remote system is inherited. After the input / output signal name belonging to both the local and remote systems is determined, the input / output signal name is used as a unique identifier to associate information on both sides of the input / output signal. The distributed control system side termination information is then associated and matched using the input / output signal name as a unique identifier.

[0045] The terminal block signal type analysis module's terminal block signal type data structure and classification process are as follows: Figure 3As shown, signals are categorized based on their input / output signal attributes. These attributes include the component of the signal's endpoint device, the location of the endpoint device, and the signal type: analog or digital. Signals with the same endpoint device component and signal type are grouped together. Analog signals of the same type do not share a common terminal, while digital signals of the same type share a common terminal. Based on the determination results, the number of analog signals and digital signals of the same type are generated as a basis for cable selection.

[0046] The cable core count and cross-section selection and verification module selects the number of cables based on the terminal block signal classification results according to the following principles: Under the same signal classification, a cable contains only one common terminal. If a terminal block has multiple common terminals, a second cable is split when a second common terminal is encountered.

[0047] The selection method for the number of cable cores is as follows:

[0048] X = S × 2 - C + 1

[0049] In the formula: X represents the minimum number of cores in the control cable.

[0050] S represents the number of input / output signals of the same category.

[0051] C represents the number of common terminals.

[0052] After considering margins, control and measurement cables with a core count greater than or equal to the minimum core count are selected from the engineering cable database. Based on the initial cable selection, the cable verification module is invoked according to the signal classification results to verify the rationality of the cable selection. The verification results must meet the voltage drop limit requirements for the control loop to operate without malfunction, and the voltage and current measurement loops must meet the accuracy limits. Finally, the results are presented in cable termination diagrams, cable lists, and cable system documentation. Figure 3 Presented in various forms.

[0053] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0054] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A system for automatically generating control and measurement cable termination diagrams for nuclear power plants, characterized in that, include: The terminal block signal matching module categorizes the input / output signals in the typical termination information table associated with the secondary diagram into two types: local system and remote system. It uses the input / output signal point name as a unique identifier to associate information on both sides of the input / output signal. Furthermore, it uses the input / output signal point name as a unique identifier to perform the association and matching of termination information on the distributed control system side. The terminal block signal analysis module classifies signals according to their input / output signal attributes, determines the number of common terminals within the same type of signal, and generates a number of similar signals as a basis for cable selection based on the determination results. The signal attributes include the component of the signal's endpoint device and the location of the signal's endpoint device; the signal type is either analog or digital; signals with the same endpoint device component and the same signal type are grouped into the same category; analog signals of the same type do not have a common terminal, while digital signals of the same type have one common terminal. The cable core count and cross-section selection and cable verification module selects the number of cables based on the terminal block signal classification results and verifies the rationality of the cable selection. The results are presented in three forms: cable termination diagram, cable list, and cable system diagram. The principle for selecting the number of cables based on the terminal block signal classification results is: under the same signal classification, a cable contains only one common terminal. If a terminal block has multiple common terminals, then a second cable is split when the second common terminal is encountered. The selection method for the number of cable cores is as follows: X = S × 2 - C + 1 In the formula, X represents the minimum number of cores in the control cable; S represents the number of input / output signals of the same category; C represents the number of common terminals; Select control and measurement cables with a core count greater than or equal to the minimum core count from the engineering cable database.

2. The system for automatically generating nuclear power plant control and measurement cable termination diagrams as described in claim 1, characterized in that, In the terminal block signal matching module, the input / output signals of the local system are encoded into input / output signal point names in the form of unit number + local electrical system number + input / output signal tag number; the input / output signals belonging to the opposite system are matched by the input / output signal tag number + power supply routing relationship, and then inherit the point name encoding of the opposite system for the input / output signals.

3. The system for automatically generating nuclear power plant control and measurement cable termination diagrams as described in claim 1, characterized in that, The engineering cable database contains cable type, impedance, number of cores, and whether it is a fire-resistant cable. Each type of cable is identified by a unique code in the database.

4. A method for automatically generating control and measurement cable termination diagrams for nuclear power plants, characterized in that, Includes the following steps: (1) Divide the input / output signals in the typical termination information table of the quadratic graph into two categories: the local system and the opposite system. Use the input / output signal point name as a unique identifier to associate the information on both sides of the input / output signal; and use the input / output signal point name as a unique identifier to perform the association matching of the termination information on the distributed control system side. (2) Classify the signals according to their input / output attributes, determine the number of common terminals in the same type of signals, and generate the number of signals of the same type as the basis for cable selection based on the determination results; the attributes of the signals include the components of the signal's endpoint device and the location of the signal's endpoint device; the type of the signal is analog or digital; signals with the same components of the signal's endpoint device and the same type of signal are grouped into the same category, analog signals of the same type do not have a common terminal, and digital signals of the same type have one common terminal; (3) Select the number of cables according to the terminal block signal classification results, and verify the rationality of cable selection. Present the results in three forms: cable termination diagram, cable list, and cable system diagram. The principle for selecting the number of cables based on the terminal block signal classification results is: under the same signal classification, a cable contains only one common terminal. If a terminal block has multiple common terminals, then a second cable is split when the second common terminal is encountered. The selection method for the number of cable cores is as follows: X = S × 2 - C + 1 In the formula, X represents the minimum number of cores in the control cable; S represents the number of input / output signals of the same category; C represents the number of common terminals; Select control and measurement cables with a core count greater than or equal to the minimum core count from the engineering cable database.

5. The method for automatically generating nuclear power plant control and measurement cable termination diagrams as described in claim 4, characterized in that, In step (1), the input / output signals of the local system are encoded into input / output signal point names in the form of unit number + local electrical system number + input / output signal tag number; the input / output signals belonging to the opposite system are matched by the input / output signal tag number + power supply routing relationship, and then inherit the point name encoding of the input / output signals of the opposite system.

6. The method for automatically generating nuclear power plant control and measurement cable termination diagrams as described in claim 4, characterized in that, In step (3), verifying the rationality of cable selection involves checking whether the voltage drop limit requirement for the control circuit to operate without malfunction is met based on the terminal block signal classification results, and whether the voltage and current measurement circuits meet the accuracy limit requirements.

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