Cable fault simulation test method and system

Abstract

The invention discloses a cable fault simulation test method and system, and belongs to the technical field of cable fault detection, and the method comprises the steps: setting a required cable configuration file before simulation, and building a cable work simulation scene according to the cable configuration file, and recording and evaluating each operation step and detected data during the simulation operation of the student, thereby solving the problem of poor learning effect caused by difficulty in visually displaying a real equipment operation scene and difficulty in analyzing the learning condition of the student during learning in the existing cable fault simulation test method. Not only is the degree of closeness between the cable fault simulation test and the actual condition improved, but also students can set various test conditions during operation, a comprehensive test environment is provided, the students have a more intuitive experience on the practical operation process, the operation process of the students is recorded and evaluated in real time, the learning effect of the students can be displayed, and the practical operation process of the students is more vivid. Students can conveniently find defects in the learning process, and the learning efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of cable fault detection, and in particular to a cable fault simulation test method and system. Background Art

[0002] At present, the cable fault detection industry uses the traveling wave method and arc reflection principle to implement testing in practical applications. In traditional industry learning, the learning of low-voltage pulses, high-voltage flashovers, and multiple pulses mostly adopts sampling waveforms of actual fault cables and analyzing waveforms. A few use capacitors and inductors to simulate the length of the cable. In this way, the uncertainty and instability of the simulated fault distance point position, the inconvenience of building complex cable distance circuits and the uncontrollable factors of length parameters are introduced. In addition, capacitors and inductors can only simulate the waveform of low-voltage pulses, and high-voltage flashovers and multiple pulses cannot be achieved. Under the above circumstances, many beginners are confused about the learning and analysis of waveforms, and have no intuitive experience in operating the equipment, and their learning efficiency is low.

[0003] Chinese patent, publication number: CN111983378B, publication date: April 7, 2023, discloses a cable fault location simulation system, including a host computer and a simulation test device, the host computer and the simulation test device are communicatively connected, the power input end of the power supply module is electrically connected to the external AC power, the auxiliary power output end of the power supply module is electrically connected to the power input end of the main control module, the test power output end of the power supply module is electrically connected to the test end of the equivalent cable device, the main control module is communicatively connected to the host computer, the first control end of the main control module is electrically connected to the alarm module, the main control module is electrically connected to the relay module, the output ends of the relay mode selection module and the fault mode selection module are respectively electrically connected to the first end of the line adjustment module, and the second end of the line adjustment module is electrically connected to the equivalent cable device to simulate the actual length of the cable fault situation, thereby improving the detection accuracy of the cable fault, but it cannot evaluate the learning effect of the students, and cannot accurately locate the cable fault position through high-voltage flashover and multiple pulses. Summary of the invention

[0004] The present invention aims at the problem that the existing cable fault simulation test method is difficult to intuitively display the real equipment operation scene and it is difficult to analyze the learning situation of the students during learning, thus causing poor learning effect. The present invention provides a cable fault simulation test method, by setting the required cable configuration file before simulation, and building the cable work simulation scene according to the cable configuration file, and then recording and evaluating the various operation steps and detected data during the student's simulation operation, which not only improves the degree of closeness between the cable fault simulation test and the actual situation, so that the students can set various test situations during operation, provides a comprehensive testing environment, and enables the students to have a more intuitive experience of the practical operation process, and the real-time recording and evaluation of the students' operation process can show the students' learning effect, facilitate the students to find deficiencies in the learning process, and improve learning efficiency.

[0005] In a first aspect, a technical solution provided in an embodiment of the present invention is: a cable fault simulation test method, comprising the following steps: S1. The cable setting module generates a cable configuration file based on the test requirements and sends the cable configuration file to the scene setting module; S2. The scene setting module reads the cable configuration file and calls the scene model library to generate a cable working simulation scene; S3. The operation module executes the cable fault detection process in the cable work simulation scenario based on the test requirements and sets the operation rules, synchronously records the detection steps and generates the operation file, synchronously records the detection signal detected in the cable fault detection process and generates the detection file; sends the detection file and the operation file to the evaluation module; S4. The evaluation module compares the operation file with the operation rules to obtain an operation score, and compares the detection file with the cable configuration file to obtain a detection score; the comprehensive evaluation principle responds to the operation score and the detection score to obtain a comprehensive score.

[0006] In this solution, the required cables and cable working simulation scenarios are automatically generated by setting the cable configuration file, which can vividly and intuitively simulate various working conditions of the cables. The detection steps are compared according to the operating rules and then automatically and accurately scored. The trainees' detection process and detection signals are also recorded, which not only assesses the trainees' operational standardization, but also assesses the trainees' detection accuracy. The automatic real-time scoring helps to improve learning effects and training efficiency.

[0007] Preferably, the content of the cable configuration file includes at least cable length, cable type, test mode, fault type and cable status; The fault types include at least short circuit fault, open circuit fault and mixed fault.

[0008] In this solution, when testing cables in an actual environment, the length, type and working status of the cables will affect the detection effect. Therefore, in the simulation test, in order to be more in line with the actual situation, it is also necessary to set the length, type and working status of the cables. At the same time, the fault state of the cable can also be selected, and the corresponding test mode can be selected according to the fault state. Both the fault state and the test mode include multiple types, which are all saved in the test system and can be freely selected according to learning needs.

[0009] Preferably, the scenario model library includes at least an environment model library and a cable model library; the environment model library includes at least an environment simulation data model consisting of weather, building, temperature and humidity; the cable model library includes at least a cable simulation data model consisting of cable type, cable length and cable status.

[0010] In this solution, when testing cables in an actual environment, not only the cable conditions themselves will affect the detection results, but the environment in which the cables are located will also affect the detection of the cables. Therefore, in the simulation test process, in order to fit the actual situation as much as possible, it is also necessary to simulate the environment around the cables, including weather, buildings, temperature, and humidity, etc., which can be freely selected and combined according to learning needs.

[0011] Preferably, in S3, the operation module executes the cable fault detection process and sets the operation rules in the cable work simulation scenario based on the test requirements, including the following steps: The operation module sets pulse parameters and pulse modes based on test requirements, generates corresponding pulse actions based on the pulse parameters and pulse modes, and executes the pulse actions to output pulse signals to the cable; Cable fault detection is performed based on the traveling wave arc reflection test rules.

[0012] In this solution, the operation module can accurately set pulse parameters such as pulse width, amplitude, frequency, etc. according to test requirements. These parameters directly affect the propagation characteristics and reflection characteristics of the pulse signal in the cable. Accurately set pulse parameters help to obtain clearer reflection waveforms, thereby more accurately judging the location and type of the fault point. At the same time, it also provides students with an interactive interface to facilitate students to freely choose learning content according to their learning needs; the choice of pulse mode (such as low-voltage pulse method, pulse voltage method, pulse current method, etc.) depends on the type and characteristics of the cable fault. The operation module can select a suitable pulse mode according to the test requirements to ensure that the pulse signal can effectively stimulate the reflection or discharge phenomenon of the fault point; by adopting the traveling wave method arc reflection test rules to detect cable faults, and using the reflected waveform generated by arc discharge to judge the location and type of the fault point, it can accurately identify high-resistance faults and flashover faults, overcoming the limitation that the low-voltage pulse method cannot test high-resistance and flashover faults, thereby improving the detection effect and detection accuracy.

[0013] Preferably, the cable fault detection is performed based on the traveling wave method arc reflection test rule, comprising the following steps: The cable state is set to a normal working state, a low-voltage pulse signal is transmitted to the cable, and the first waveform of the low-voltage pulse signal is recorded; The cable state is set to a fault state, a high-voltage pulse signal is transmitted to the cable to generate an arc, a low-voltage pulse signal is transmitted to the cable again during the arc period, and a second waveform of the low-voltage pulse signal is recorded; The first waveform is compared with the second waveform to obtain a bifurcation point of the waveform, and the cable fault position is obtained based on the position of the bifurcation point.

[0014] In this scheme, the first waveform recorded under normal working conditions is used as a reference waveform to reflect the signal propagation characteristics of the cable when there is no fault. When the cable is in a faulty state, an arc is generated by emitting a high-voltage pulse signal, and a second waveform recorded by emitting a low-voltage pulse signal again during the existence of the arc is used to reflect the signal reflection or attenuation at the fault point. The first waveform is then compared with the second waveform to clearly identify the bifurcation point of the waveform, which directly corresponds to the fault position in the cable, thereby achieving accurate positioning of the fault position. This detection method can quickly complete the entire process from setting the cable state, emitting pulse signals to recording waveforms and comparing waveforms, thereby greatly improving the detection efficiency. In the detection process, corresponding waveforms will be generated, so that trainees can clearly and intuitively see the effects of each step of the detection process during the operation, thereby improving the learning effect.

[0015] Preferably, in S4, the comprehensive evaluation principle obtains a comprehensive score in response to the operation score and the detection score, comprising the following steps: The preset weights of the operation score and the detection score are set, and the operation score and the detection score are weighted summed based on the preset weights to obtain a comprehensive score.

[0016] In this scheme, by taking the weighted sum of the operation score and the test score, the student's operation ability and test ability are comprehensively evaluated, which can prevent the situation where the student's comprehensive evaluation is inconsistent with the student's own ability due to excessively high scores in one aspect, making the comprehensive score more reliable.

[0017] In a second aspect, a technical solution provided in an embodiment of the present invention is: a cable fault simulation test system, including a cable setting module, a scene setting module, an operation module and an evaluation module; The cable setting module generates a cable configuration file based on the test requirements; The scene setting module is used to call the scene model library and build a cable work simulation scene based on the cable configuration file; The operation module is used to simulate the on-site cable fault detection process, set operation rules, record detection steps and generate operation files, and synchronously, record detection signals detected in the cable fault detection process and generate detection files; The evaluation module reads the operation file and the detection file, compares the operation file with the operation rules to obtain the operation score, compares the detection file with the cable configuration file to obtain the detection score, and the comprehensive evaluation principle responds to the operation score and the detection score to obtain the comprehensive score.

[0018] In this solution, by setting up the required cable configuration files before simulation, building a cable work simulation scene based on the cable configuration files, and then recording and evaluating the various operation steps and detected data during the trainees' simulation operations, it not only improves the degree of closeness between the cable fault simulation test and the actual situation, but also enables trainees to set up various test situations during operation, provides a comprehensive testing environment, and enables trainees to have a more intuitive understanding of the practical operation process. In addition, the real-time recording and evaluation of the trainees' operation process can demonstrate the trainees' learning effect, facilitate trainees to find deficiencies in the learning process, and improve learning efficiency.

[0019] Preferably, the operation module includes an operation interface, a pulse signal setting unit and a pulse signal output unit; the operation interface sets pulse parameters and pulse modes, and the pulse modes include low-voltage pulse mode and high-voltage pulse mode; the pulse signal setting unit generates corresponding pulse actions based on pulse parameters and pulse modes, and the pulse signal output unit executes the pulse action to output the pulse signal to the cable.

[0020] In this solution, the operation module provides an interactive interface for trainees. The detection steps of cable detection can be simulated on the operation module, and different cable fault types can be set to learn the detection process. The operation module can be a touch screen with display and interactive functions or other interactive devices.

[0021] Preferably, in the low-voltage pulse mode, if the pulse signal output unit performs an open-circuit action, an open-circuit pulse waveform is output; if the pulse signal output unit performs a short-circuit action, a short-circuit pulse waveform is output.

[0022] In this solution, since the system can directly output the corresponding pulse waveform according to the action of the pulse signal output unit, the fault detection process can be completed more quickly, which helps to shorten the detection time and improve the detection efficiency. There is no need for complicated operations or settings. Only the action of the pulse signal output unit and the output pulse waveform need to be observed to determine the fault type of the cable. The display is more intuitive and convenient, thereby improving the students' learning impression and improving learning efficiency.

[0023] Preferably, the content of the detection file includes at least the fault type and the fault point location.

[0024] In this solution, the detection file is mainly used to record the data and signals detected by the trainees during the detection process, including the pulse waveform, the fault type and fault point location determined based on the pulse waveform, and serves as a record of the detection process for subsequent evaluation of the trainees' fault detection accuracy.

[0025] Beneficial effects of the present invention: The present invention automatically generates the required cables and cable working simulation scenes by setting cable configuration files, which can vividly and intuitively simulate various situations of the cables at work; by comparing the detection steps according to the operating rules and then automatically and accurately scoring them, the trainees' detection process and detection signals are also recorded, which not only assesses the trainees' operational standardization, but also assesses the trainees' detection accuracy, and automatically and in real time scores, which helps to improve learning effects and training efficiency.

[0026] The above invention content is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings. The drawings are only for the purpose of illustrating preferred embodiments and are not to be considered as limiting the present invention. Also, the same reference symbols are used throughout the drawings to represent the same parts.

[0028] Figure 1 A flow chart of a cable fault simulation test method of the present invention; Figure 2 A schematic diagram of a cable fault simulation test system according to the present invention; Figure 3 This is a working principle diagram of the low-voltage pulse mode of the operating module of the present invention; Figure 4 This is a working principle diagram of the high voltage pulse mode of the operating module of the present invention; Figure 5 The present invention is a working principle diagram of a cable fault simulation test system. DETAILED DESCRIPTION

[0029] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific implementation method described herein is only an optimal embodiment of the present invention, which is only used to explain the present invention and does not limit the scope of protection of the present invention. All other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0030] Before discussing the exemplary embodiments in more detail, it should be mentioned that some exemplary embodiments are described as processes or methods depicted as flow charts. Although the flow charts describe the operations (or steps) as sequential processes, many of the operations (or steps) therein can be implemented in parallel, concurrently, or simultaneously. In addition, the order of the operations can be rearranged. The process can be terminated when its operation is completed, but can also have additional steps not included in the drawings; the process can correspond to a method, function, procedure, subroutine, subprogram, etc.

[0031] Example 1: Figure 1 As shown, in order to solve the problem that the existing cable fault simulation test method is difficult to intuitively display the real equipment operation scene and difficult to analyze the learning situation of the students during learning, resulting in poor learning effect, this embodiment provides a cable fault simulation test method, including the following steps: S1: The cable setting module generates a cable configuration file based on the test requirements and sends the cable configuration file to the scenario setting module.

[0032] In this embodiment, the content of the cable configuration file includes at least cable length, cable type, test mode, fault type and cable status; The fault types include at least short circuit fault, open circuit fault and mixed fault.

[0033] When the present embodiment detects the cable in an actual environment, the length, type and working state of the cable will affect the detection effect. Therefore, in the simulation test, in order to be more in line with the actual situation, it is also necessary to set the length, type and working state of the cable. At the same time, the fault state of the cable can also be selected, and the corresponding test mode can be selected according to the fault state. Both the fault state and the test mode include multiple types, which are all saved in the test system and can be freely selected according to learning needs.

[0034] S2: The scenario setting module reads the cable configuration file and calls the scenario model library to generate a cable working simulation scenario.

[0035] In this embodiment, the scene model library includes at least an environment model library and a cable model library; the environment model library includes at least an environment simulation data model composed of weather, building, temperature and humidity; the cable model library includes at least a cable simulation data model composed of cable type, cable length and cable status.

[0036] When the present embodiment detects the cable in an actual environment, not only the condition of the cable itself will affect the detection effect, but also the environment in which the cable is located will affect the detection of the cable. Therefore, in the simulation test process, in order to fit the actual situation as much as possible, it is also necessary to simulate the environment around the cable, including weather, buildings, temperature, humidity, etc., which can be freely selected and combined according to learning needs.

[0037] S3: The operation module executes the cable fault detection process and sets the operation rules in the cable work simulation scenario based on the test requirements. Simultaneously, it records the detection steps and generates an operation file. Simultaneously, it records the detection signals detected in the cable fault detection process and generates a detection file. The detection file and the operation file are sent to the evaluation module.

[0038] In this embodiment, the operation module executes the cable fault detection process and sets the operation rules in the cable work simulation scenario based on the test requirements, including the following steps: The operation module sets pulse parameters and pulse modes based on test requirements, generates corresponding pulse actions based on the pulse parameters and pulse modes, and executes the pulse actions to output pulse signals to the cable; Cable fault detection is performed based on the traveling wave arc reflection test rules.

[0039] In this embodiment, the operation module can accurately set pulse parameters such as pulse width, amplitude, frequency, etc. according to test requirements. These parameters directly affect the propagation characteristics and reflection characteristics of the pulse signal in the cable. Accurately set pulse parameters help to obtain clearer reflection waveforms, thereby more accurately judging the location and type of the fault point. At the same time, it also provides students with an interactive interface to facilitate students to freely choose learning content according to their learning needs; the choice of pulse mode (such as low-voltage pulse method, pulse voltage method, pulse current method, etc.) depends on the type and characteristics of the cable fault. The operation module can select a suitable pulse mode according to the test requirements to ensure that the pulse signal can effectively stimulate the reflection or discharge phenomenon of the fault point; by adopting the traveling wave method arc reflection test rule to detect cable faults, and using the reflection waveform generated by arc discharge to judge the location and type of the fault point, it can accurately identify high-resistance faults and flashover faults, overcoming the limitation that the low-voltage pulse method cannot test high-resistance and flashover faults, thereby improving the detection effect and detection accuracy.

[0040] In this embodiment, the cable fault detection is performed based on the arc reflection test rule of the traveling wave method, including the following steps: setting the cable state to a normal working state, transmitting a low-voltage pulse signal to the cable and recording a first waveform of the low-voltage pulse signal; The cable state is set to a fault state, a high-voltage pulse signal is transmitted to the cable to generate an arc, a low-voltage pulse signal is transmitted to the cable again during the arc period, and a second waveform of the low-voltage pulse signal is recorded; The first waveform is compared with the second waveform to obtain a bifurcation point of the waveform, and the cable fault position is obtained based on the position of the bifurcation point.

[0041] In this embodiment, the first waveform recorded in the normal working state is used as the reference waveform to reflect the signal propagation characteristics of the cable when there is no fault. When the cable is in a faulty state, an arc is generated by emitting a high-voltage pulse signal, and a second waveform recorded by emitting a low-voltage pulse signal again during the existence of the arc is used to reflect the signal reflection or attenuation at the fault point. The first waveform is then compared with the second waveform to clearly identify the bifurcation point of the waveform, which directly corresponds to the fault position in the cable, thereby achieving accurate positioning of the fault position. This detection method can quickly complete the entire process from setting the cable state, emitting pulse signals to recording waveforms and comparing waveforms, thereby greatly improving the detection efficiency. In addition, corresponding waveforms will be generated during the detection process, so that trainees can clearly and intuitively see the effects of each step of the detection process during the operation, thereby improving the learning effect.

[0042] S4: The evaluation module compares the operation file with the operation rules to obtain an operation score, and compares the detection file with the cable configuration file to obtain a detection score; the comprehensive evaluation principle responds to the operation score and the detection score to obtain a comprehensive score.

[0043] In this embodiment, the comprehensive evaluation principle obtains a comprehensive score in response to the operation score and the detection score, including the following steps: setting preset weights for the operation score and the detection score, and performing weighted summation of the operation score and the detection score based on the preset weights to obtain a comprehensive score.

[0044] This embodiment comprehensively evaluates the student's operation ability and detection ability by taking a weighted sum of the operation score and the detection score, which can prevent the situation where the student's comprehensive evaluation is inconsistent with the student's own ability due to an excessively high score in one aspect, making the comprehensive score more reliable.

[0045] This embodiment automatically generates the required cables and cable working simulation scenarios by setting the cable configuration file, which can vividly and intuitively simulate various working conditions of the cables. It also records the trainees' testing process and testing signals by comparing the testing steps according to the operating rules and then automatically and accurately scoring them, which not only assesses the trainees' operating standardization, but also assesses the trainees' testing accuracy, and automatically and in real time scores, which helps to improve learning effects and training efficiency.

[0046] Example 2: Figure 2 As shown, this embodiment provides a cable fault simulation test system, including a cable setting module, a scene setting module, an operation module and an evaluation module; The cable setting module generates a cable configuration file based on the test requirements; The scene setting module is used to call the scene model library and build a cable work simulation scene based on the cable configuration file; The operation module is used to simulate the on-site cable fault detection process, set operation rules, record detection steps and generate operation files, and synchronously, record detection signals detected in the cable fault detection process and generate detection files; The evaluation module reads the operation file and the detection file, compares the operation file with the operation rules to obtain the operation score, compares the detection file with the cable configuration file to obtain the detection score, and the comprehensive evaluation principle responds to the operation score and the detection score to obtain the comprehensive score.

[0047] This embodiment sets the required cable configuration file before simulation, builds a cable work simulation scene according to the cable configuration file, and then records and evaluates each operation step and detected data during the trainee's simulation operation. This not only improves the degree of closeness between the cable fault simulation test and the actual situation, but also allows trainees to set various test conditions during operation, provides a comprehensive testing environment, and enables trainees to have a more intuitive understanding of the practical operation process. The real-time recording and evaluation of the trainee's operation process can demonstrate the trainee's learning effect, facilitate trainees to find deficiencies in the learning process, and improve learning efficiency.

[0048] In this embodiment, the operation module includes an operation interface, a pulse signal setting unit and a pulse signal output unit; Figure 3 and Figure 4 As shown, the operation interface sets pulse parameters and pulse modes, and the pulse modes include low-voltage pulse mode and high-voltage pulse mode; The pulse signal setting unit generates a corresponding pulse action based on the pulse parameter and the pulse mode, and the pulse signal output unit executes the pulse action to output the pulse signal to the cable.

[0049] The operation module of this embodiment provides an interactive interface for trainees. The detection steps of cable detection can be simulated on the operation module, and different cable fault types can be set to learn the detection process. The operation module can be a touch screen with display and interactive functions or other interactive devices.

[0050] In this embodiment, Figure 3 As shown, in the low-voltage pulse mode, if the pulse signal output unit performs an open-circuit action, an open-circuit pulse waveform is output; if the pulse signal output unit performs a short-circuit action, a short-circuit pulse waveform is output.

[0051] In this embodiment, since the system can directly output the corresponding pulse waveform according to the action of the pulse signal output unit, the fault detection process can be completed more quickly, which helps to shorten the detection time and improve the detection efficiency. There is no need for complicated operations or settings. The fault type of the cable can be determined by observing the action of the pulse signal output unit and the output pulse waveform. The display is more intuitive and convenient, thereby improving students' learning impression and improving learning efficiency.

[0052] In this embodiment, the content of the detection file at least includes the fault type and the fault point location.

[0053] The detection file of this embodiment is mainly used to record the data and signals detected by the trainee during the detection process, including the pulse waveform, the fault type and the fault point location determined based on the pulse waveform, and plays the role of recording the detection process for subsequent evaluation of the trainee's fault detection accuracy.

[0054] Specifically, in this embodiment, the single-chip microcomputer and the touch LCD screen can realize function control and switching. The single-chip microcomputer is used to realize the functions of the cable setting module, the scene setting module and the evaluation module. The touch LCD screen is used to realize the content of the operation module. A wireless module can also be set to receive the functional status of the simulated high-voltage generator and display it on the screen to realize the linkage function, such as Figure 5 As shown, the MCU sets the communication status and builds the test environment, and collects and saves the data detected during the test. Synchronously, the external power supply provides power to the system to support the generation of pulse signals. The high-voltage pulse signal is boosted to act on the cable and generate an arc. The MCU then chooses whether to output a low-voltage pulse according to the test requirements, and controls and switches the output of the pulse signal. Finally, the pulse signal passing through the cable is collected and converted into an intuitive waveform through AD conversion and displayed on the touch LCD screen.

[0055] During the test, the remote control end first sends a wireless signal to start the simulation test system, and identifies the wireless signal status to determine whether a simulation test can be performed. If so, the test mode is automatically / manually selected (such as low-voltage pulse, high-voltage flashover, secondary pulse), and then the single pulse, periodic pulse and other modes are automatically selected according to the required pulse signal content contained in the wireless signal status. After setting, the trainee manually sets the fault type, which is divided into short resistance, open circuit, and mixed mode, and sets the fault distance parameters, including 150m, 500m, 1.5km, 5km, 15km, 45km and other fault distances. After setting, the trainee performs a simulation test of the cable fault on the touch LCD screen, records the trainee's test process, evaluates the trainee's learning results based on the recorded results, and displays the score on the touch LCD screen.

[0056] It can be seen from the above embodiments that at least the following substantial effects are achieved: The present invention automatically generates the required cables and cable working simulation scenes by setting cable configuration files, and can vividly and intuitively simulate various working situations of the cables. The detection steps are compared according to the operating rules and then automatically and accurately scored, and the trainees' detection process and detection signals are recorded, which not only examines the trainees' operation standardization, but also examines the trainees' detection accuracy, and automatically and in real time scores, which helps to improve learning effects and training efficiency.

[0057] The specific implementation described above is a preferred implementation of a cable fault simulation test method and system of the present invention, and is not intended to limit the specific implementation scope of the present invention. The scope of the present invention includes but is not limited to this specific implementation. All equivalent changes made in accordance with the shape and structure of the present invention are within the protection scope of the present invention.

Claims

1. A cable fault simulation test method, characterized in that: The following steps are involved: S1. The cable setting module generates a cable configuration file based on the test requirements and sends the cable configuration file to the scene setting module; S2, the scene setting module reads the cable configuration file and calls the scene model library to generate a cable working simulation scene; S3. The operation module executes the cable fault detection process in the cable work simulation scenario based on the test requirements and sets the operation rules, synchronously records the detection steps and generates the operation file, synchronously records the detection signal detected in the cable fault detection process and generates the detection file; sends the detection file and the operation file to the evaluation module; S4. The evaluation module compares the operation file with the operation rules to obtain an operation score, and compares the detection file with the cable configuration file to obtain a detection score; the comprehensive evaluation principle responds to the operation score and the detection score to obtain a comprehensive score.

2. A cable fault simulation test method according to claim 1, characterized in that: The content of the cable configuration file at least includes cable length, cable type, test mode, fault type and cable status; The fault types include at least short circuit fault, open circuit fault and mixed fault.

3. A cable fault simulation test method according to claim 1, characterized in that: The scenario model library includes at least an environment model library and a cable model library; the environment model library includes at least an environment simulation data model composed of weather, building, temperature and humidity; the cable model library includes at least a cable simulation data model composed of cable type, cable length and cable status.

4. A cable fault simulation test method according to claim 1, characterized in that: In S3, the operation module executes the cable fault detection process and sets the operation rules in the cable work simulation scenario based on the test requirements, including the following steps: The operation module sets pulse parameters and pulse modes based on test requirements, generates corresponding pulse actions based on the pulse parameters and pulse modes, and executes the pulse actions to output pulse signals to the cable; Cable fault detection is performed based on the traveling wave arc reflection test rules.

5. A cable fault simulation test method according to claim 4, characterized in that: The cable fault detection based on the traveling wave arc reflection test rule includes the following steps: The cable state is set to a normal working state, a low-voltage pulse signal is transmitted to the cable, and the first waveform of the low-voltage pulse signal is recorded; The cable state is set to a fault state, a high-voltage pulse signal is transmitted to the cable to generate an arc, a low-voltage pulse signal is transmitted to the cable again during the arc period, and a second waveform of the low-voltage pulse signal is recorded; The first waveform is compared with the second waveform to obtain a bifurcation point of the waveform, and the cable fault position is obtained based on the position of the bifurcation point.

6. A cable fault simulation test method according to claim 1, characterized in that: In S4, the comprehensive evaluation principle obtains a comprehensive score in response to the operation score and the detection score, including the following steps: setting preset weights for the operation score and the detection score, and performing weighted summation of the operation score and the detection score based on the preset weights to obtain a comprehensive score.

7. A cable fault simulation test system, applicable to a cable fault simulation test method according to any one of claims 1 to 6, characterized in that: It includes a cable setting module, a scene setting module, an operation module and an evaluation module; The cable setting module generates a cable configuration file based on the test requirements; The scene setting module is used to call the scene model library and build a cable work simulation scene based on the cable configuration file; The operation module is used to simulate the on-site cable fault detection process, set operation rules, record detection steps and generate operation files, and synchronously, record detection signals detected in the cable fault detection process and generate detection files; The evaluation module reads the operation file and the detection file, compares the operation file with the operation rules to obtain the operation score, compares the detection file with the cable configuration file to obtain the detection score, and the comprehensive evaluation principle responds to the operation score and the detection score to obtain the comprehensive score.

8. A cable fault simulation test system according to claim 7, characterized in that: The operation module includes an operation interface, a pulse signal setting unit and a pulse signal output unit; The operation interface sets pulse parameters and pulse modes, and the pulse modes include low-voltage pulse mode and high-voltage pulse mode; The pulse signal setting unit generates a corresponding pulse action based on the pulse parameter and the pulse mode, and the pulse signal output unit executes the pulse action to output the pulse signal to the cable.

9. A cable fault simulation test system according to claim 8, characterized in that: In the low-voltage pulse mode, if the pulse signal output unit performs an open-circuit action, an open-circuit pulse waveform is output; if the pulse signal output unit performs a short-circuit action, a short-circuit pulse waveform is output.

10. A cable fault simulation test system according to claim 7, characterized in that: The content of the detection file includes at least the fault type and the fault point location.

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