AC line short circuit fault simulation device and method

Abstract

The present invention discloses an AC line short-circuit fault simulation device and method, and relates to the technical field of short-circuit fault simulation. The device includes an AC source, a first switch, a second switch, a voltage sensor, a current sensor, a signal collector, a short-circuit fault generator, a data sending module, a data receiving module, and a host computer; a control signal is generated by the host computer and sent to the short-circuit fault generator; the short-circuit fault generator simulates a short-circuit fault under the control of the control signal sent by the host computer; the signal collector collects the electrical signal and temperature signal at the moment of the short-circuit fault through a sensor and sends it to the data sending module; the data sending module transmits the electrical signal and temperature signal to the data receiving module in a wireless manner, and transmits them to the host computer via the data receiving module for display. The present invention can effectively improve the authenticity and credibility of the short-circuit fault simulation device.

Description

Technical Field

[0001] The present invention relates to the technical field of short-circuit fault simulation, and in particular to an alternating current line short-circuit fault simulation device and method. Background Art

[0002] With the rapid development of social economy and the continuous upgrading of science and technology, high-power electrical appliances of various functions and models have gradually entered the homes of ordinary people, which has led to a sharp increase in per capita electricity consumption. As per capita electricity consumption increases, various electrical fires have also increased dramatically. Electrical fires are characterized by strong suddenness and concealment. In particular, some electrical projects are prone to electrical short-circuit faults and fires due to irregular installation and chaotic wiring methods. Short-circuit fires caused by electrical short-circuit faults or illegal use of electrical appliances have remained high, seriously endangering people's lives and property safety, and have attracted widespread attention from all walks of life.

[0003] In order to better prevent electrical fires caused by AC line short circuit faults, many researchers have devoted themselves to studying the mechanism of AC line short circuit fires. Since short circuit fires are catastrophic accidents, the study of AC line short circuit fires can be carried out through AC line short circuit fault simulation experiments. However, the existing electrical fire fault simulation devices cannot better meet the experimental needs, which has a great impact on the accuracy and reliability of the experimental results. Summary of the invention

[0004] The object of the present invention is to provide an AC line short-circuit fault simulation device and method, which can effectively improve the authenticity and credibility of the short-circuit fault simulation device.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] An AC line short-circuit fault simulation device comprises: an AC source, a first switch, a first voltage sensor, a first current sensor, a first signal collector, a second switch, a second voltage sensor, a second current sensor, a second signal collector, a short-circuit fault generator, a third signal collector, a data sending module, a data receiving module and a host computer;

[0007] The output end of the AC source is electrically connected to the input end of the first switch through a first wire and a second wire respectively; the output end of the first switch is electrically connected to the input end of the second switch through a third wire and a fourth wire respectively; the output end of the second switch is electrically connected to the input end of the short-circuit fault generator through a fifth wire and a sixth wire; the first voltage sensor is connected in parallel to the output end of the first switch; the first current sensor is passed through by the fourth wire; the second voltage sensor is connected in parallel to the output end of the second switch; the second current sensor is passed through by the sixth wire; the first voltage sensor and the first current sensor are both electrically connected to the first signal collector; the second voltage sensor and the second current sensor are both electrically connected to the second signal collector; the short-circuit fault generator is electrically connected to the third signal collector; the first signal collector, the second signal collector and the third signal collector are all electrically connected to the data sending module; the data sending module is communicatively connected to the data receiving module; the data receiving module is electrically connected to the host computer; the host computer is electrically connected to the short-circuit fault generator for controlling the operation of the short-circuit fault generator.

[0008] Optionally, a rated current of the first switch is greater than a rated current of the second switch.

[0009] Optionally, the short-circuit fault generator includes: a shielding cover, a first short-circuit metal plug-in, a second short-circuit metal plug-in, a first insulating column, a second insulating column, a motor slide, a controller and a temperature acquisition module;

[0010] The first short-circuit metal plug-in, the second short-circuit metal plug-in, the first insulating column, the second insulating column, the motor slide, the controller and the temperature acquisition module are all placed in the shielding cover;

[0011] The first short-circuit metal plug-in is electrically connected to the sixth electric wire; the first short-circuit metal plug-in is fixed to the upper end of the first insulating column, and the lower end of the first insulating column is fixed to the bottom of the shielding cover; the second short-circuit metal plug-in is electrically connected to the fifth electric wire; the second short-circuit metal plug-in is fixed to the upper end of the second insulating column, and the lower end of the second insulating column is fixed on the motor slide; the controller is electrically connected to the motor slide, and is used to control the left and right movement of the motor slide, thereby driving the second short-circuit metal plug-in to move left and right; the controller is electrically connected to the host computer; the temperature acquisition module is fixed above the inner wall of the shielding cover, and is used to collect the temperature at the moment when the first short-circuit metal plug-in and the second short-circuit metal plug-in are in short-circuit contact; the temperature acquisition module is electrically connected to the third signal collector.

[0012] Optionally, the shielding cover material is an insulating explosion-proof material.

[0013] Optionally, the temperature acquisition module uses a wireless temperature measurement method.

[0014] Optionally, the first signal collector, the second signal collector and the third signal collector have the same structure;

[0015] The first signal collector includes: a battery, a power supply circuit, a filter circuit, a level conversion circuit, a first interface and a second interface; the battery is electrically connected to the input end of the power supply circuit; the output end of the power supply circuit is electrically connected to the filter circuit and the level conversion circuit respectively; the input end of the first interface of the first signal collector is electrically connected to the first voltage sensor and the first current sensor respectively; the input end of the first interface of the second signal collector is electrically connected to the second voltage sensor and the second current sensor respectively; the input end of the first interface of the third signal collector is electrically connected to the temperature acquisition module; the output end of the first interface is electrically connected to the input end of the filter circuit; the output end of the filter circuit is electrically connected to the input end of the level conversion circuit; the input end of the second interface is electrically connected to the output end of the level conversion circuit, and the output end of the second interface is electrically connected to the data sending module.

[0016] Optionally, both the data sending module and the data receiving module are wireless modules.

[0017] An AC line short-circuit fault simulation method, applied to the AC line short-circuit fault simulation device, comprises:

[0018] Generate a control signal through the host computer and send it to the short-circuit fault generator;

[0019] The short-circuit fault generator generates a short-circuit fault under the control of the control signal;

[0020] The first signal collector collects a first electrical signal generated at the moment of the short-circuit fault through a first voltage sensor and a first current sensor and sends the signal to the data sending module;

[0021] The second signal collector collects the second electrical signal generated at the moment of the short circuit fault through the second voltage sensor and the second current sensor and sends it to the data sending module;

[0022] The third signal collector collects the temperature signal generated by the short-circuit fault through the short-circuit fault generator and sends it to the data sending module;

[0023] The data sending module transmits the first electrical signal, the second electrical signal and the temperature signal to the data receiving module in a wireless manner, and transmits them to the host computer via the data receiving module for display.

[0024] Optionally, the short-circuit fault generator generates a short-circuit fault under the control of a control signal, specifically comprising:

[0025] The controller in the short-circuit fault generator drives the motor slide to move toward the first short-circuit metal plug-in under the control of the control signal, thereby driving the second insulating column and the second short-circuit metal plug-in to move toward the first short-circuit metal plug-in; until the first short-circuit metal plug-in contacts the second short-circuit metal plug-in, and a short-circuit fault occurs.

[0026] Optionally, the host computer includes a software operation interface; the software operation interface is used to display the first electrical signal, the second electrical signal and the temperature signal curve in real time.

[0027] According to the specific embodiments provided by the present invention, the present invention discloses the following technical effects:

[0028] The present invention provides an AC line short-circuit fault simulation device and method, the device comprising: an AC source, a first switch, a first voltage sensor, a first current sensor, a first signal collector, a second switch, a second voltage sensor, a second current sensor, a second signal collector, a short-circuit fault generator, a third signal collector, a data sending module, a data receiving module and a host computer. The host computer is used to control the operation of the short-circuit fault generator, simulate the occurrence of a short-circuit fault, and simultaneously display the electrical signal and temperature signal at the moment of the short-circuit fault. The present invention can truly simulate the occurrence of a short-circuit fault, thereby effectively improving the authenticity of the short-circuit fault simulation and the credibility of the data obtained during the short-circuit fault.

[0029] In addition, the signal collector of the present invention is powered by batteries, which prevents the situation where the signal cannot be collected due to electromagnetic interference and power outages caused by short-circuit faults. The data communication method of the present invention is wireless transmission, which solves the problems of complex on-site wiring and slow transmission rate. The short-circuit fault simulation occurs in an insulated explosion-proof shielding cover, which further ensures the safety of the experiment. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] 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 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.

[0031] Figure 1 A schematic diagram of the structure of the AC line short-circuit fault simulation device provided by the present invention;

[0032] Figure 2 A schematic diagram of the structure of a short-circuit fault generator provided by the present invention;

[0033] Figure 3 This is a schematic structural diagram of a first signal collector provided by the present invention. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] The object of the present invention is to provide an AC line short-circuit fault simulation device and method, which can effectively improve the authenticity and credibility of the short-circuit fault simulation device.

[0036] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0037] Figure 1 The structure diagram of the AC line short circuit fault simulation device provided by the present invention is shown in FIG. Figure 1 As shown, an AC line short-circuit fault simulation device disclosed in the present invention includes: an AC source 1, a first switch 2, a second switch 3, a short-circuit fault generator 4, a first voltage sensor 5, a first current sensor 6, a second voltage sensor 7, a second current sensor 8, a first signal collector 9, a second signal collector 10, a third signal collector 11, a data sending module 12, a data receiving module 13 and a host computer 14.

[0038] Specifically, the output end of the AC source 1 is electrically connected to the input end of the first switch 2 through the first wire N1 and the second wire L1 respectively. The output end of the first switch 2 is electrically connected to the input end of the second switch 3 through the third wire N2 and the fourth wire L2 respectively. The output end of the second switch 3 is electrically connected to the input end of the short-circuit fault generator 4 through the fifth wire N3 and the sixth wire L3 respectively. The first voltage sensor 5 is connected in parallel with the third wire N2 and the fourth wire L2, that is, the first voltage sensor 5 is connected in parallel with the output end of the first switch 2. The first current sensor 6 is passed through by the fourth wire L2. The second voltage sensor 7 is connected in parallel with the fifth wire N3 and the sixth wire L3, that is, the second voltage sensor 7 is connected in parallel with the output end of the second switch 3. The second current sensor 8 is passed through by the sixth wire L3. The first voltage sensor 5 and the first current sensor 6 are both electrically connected to the first signal collector 9. The second voltage sensor 7 and the second current sensor 8 are both electrically connected to the second signal collector 10. The short-circuit fault generator 4 is electrically connected to the third signal collector 11. The first signal collector 9, the second signal collector 10 and the third signal collector 11 are all electrically connected to the data sending module 12. The data sending module 12 is communicatively connected to the data receiving module 13. The data receiving module 13 is electrically connected to the host computer 14. The host computer 14 is electrically connected to the short-circuit fault generator 4, and is used to control the short-circuit fault generator 4 to work.

[0039] The rated current of the first switch 2 is greater than the rated current of the second switch 3. Preferably, the rated current of the second switch 3 is less than one third of the rated current of the first switch 2. For example, if the rated current of the second switch 3 is 63A, the rated current of the first switch 2 is 20A.

[0040] Figure 2 This is a schematic diagram of the structure of the short-circuit fault generator provided by the present invention. Figure 2 As shown, the short-circuit fault generator 4 includes: a shielding cover 41, a first short-circuit metal plug-in 42, a first insulating column 43, a second short-circuit metal plug-in 44, a second insulating column 45, a motor slide 46, a controller 47 and a temperature acquisition module 48.

[0041] Specifically, the first short-circuit metal plug-in 42, the first insulating column 43, the second short-circuit metal plug-in 44, the second insulating column 45, the motor slide 46, the controller 47 and the temperature acquisition module 48 are all placed in the shielding cover 41. The shielding cover 41 is made of insulating explosion-proof material.

[0042] The first short-circuit metal plug-in 42 is electrically connected to the sixth electric wire L3. The first short-circuit metal plug-in 42 is fixed to the upper end of the first insulating column 43, and the lower end of the first insulating column 43 is fixed to the bottom of the shielding cover 41. The second short-circuit metal plug-in 44 is electrically connected to the fifth electric wire N3. The second short-circuit metal plug-in 44 is fixed to the upper end of the second insulating column 45, and the lower end of the second insulating column 45 is fixed on the motor slide 46. The input end of the controller 47 is electrically connected to the host computer 14. The output end of the controller 47 is electrically connected to the motor slide 46. The controller 47 is used to control the motor slide 46 to move left and right under the control signal of the host computer 14, thereby driving the second short-circuit metal plug-in 44 to move left and right. The temperature acquisition module 48 is fixed above the inner wall of the shielding cover 41, and the temperature acquisition module 48 is electrically connected to the third signal collector 11, and is used to collect the temperature signal of the first short-circuit metal plug-in 42 and the second short-circuit metal plug-in 44 at the moment of short-circuit contact. Specifically, the temperature measurement method of the temperature acquisition module 48 is a wireless temperature measurement method.

[0043] In the present invention, the first signal collector 9, the second signal collector 10 and the third signal collector 11 have the same structure, and the difference is only that the collected signals are different. Taking the first signal collector 9 as an example, Figure 3 This is a schematic diagram of the structure of the first signal collector provided by the present invention. Figure 3 As shown, the first signal collector includes: a battery 91, a power supply circuit 92, a filter circuit 93, a level conversion circuit 94, a first interface A and a second interface B.

[0044] Specifically, the battery 91 is electrically connected to the input end of the power supply circuit 92, and the output end of the power supply circuit 92 is electrically connected to the filter circuit 93 and the level conversion circuit 94. The power supply circuit 92 is used to supply power to the filter circuit 93 and the level conversion circuit 94.

[0045] The input end of the first interface A of the first signal collector 9 is electrically connected to the first voltage sensor 5 and the first current sensor 6 respectively, and is used to collect the first electrical signal. The output end of the first interface A is electrically connected to the input end of the filter circuit 93. The output end of the filter circuit 93 is electrically connected to the input end of the level conversion circuit 94. The first interface A is used to connect the collected signals of each sensor to the first signal collector 9, filter them through the filter circuit 93, and then convert them through the level conversion circuit 94. The input end of the second interface B is electrically connected to the output end of the level conversion circuit 94, and the output end of the second interface B is electrically connected to the data sending module 12. The second interface B is used to output the processed sensor signal to the data sending module 12. The data sending module 12 and the data receiving module 13 are both wireless modules, so that the data sending module 12 and the data receiving module 13 complete data transmission through wireless communication.

[0046] The difference from the first signal collector 9 is that the input end of the first interface A of the second signal collector 10 is electrically connected to the second voltage sensor 7 and the second current sensor 8 respectively, for collecting the second electrical signal; the input end of the first interface A of the third signal collector 11 is electrically connected to the temperature acquisition module 48, for collecting the temperature signal.

[0047] Based on the AC line short-circuit fault simulation device, the present invention also provides an AC line short-circuit fault simulation method, comprising:

[0048] A control signal is generated by the host computer 14 and sent to the short-circuit fault generator 4 .

[0049] The short-circuit fault generator 4 generates a short-circuit fault under the control of the control signal. Specifically, the controller 47 in the short-circuit fault generator 4 drives the motor slide 46 to move toward the first short-circuit metal plug-in 42 under the control of the control signal, thereby driving the second insulating column 45 and the second short-circuit metal plug-in 44 to move toward the first short-circuit metal plug-in 42 until the first short-circuit metal plug-in 42 contacts the second short-circuit metal plug-in 44, and a short-circuit fault occurs.

[0050] The first signal collector 9 collects the first voltage signal and the first current signal at the moment of the short-circuit fault as the first electrical signal through the first voltage sensor 5 and the first current sensor 6 and sends them to the data sending module 12. The second signal collector 10 collects the second voltage signal and the second current signal at the moment of the short-circuit fault as the second electrical signal through the second voltage sensor 7 and the second current sensor 8 and sends them to the data sending module 12. The third signal collector 11 collects the temperature signal at the moment of the short-circuit fault through the short-circuit fault generator 4 and sends it to the data sending module 12. The data sending module 12 transmits the first electrical signal, the second electrical signal and the temperature signal to the data receiving module 13 in a wireless manner, and transmits them to the host computer 14 via the data receiving module 13 for display.

[0051] The host computer 14 includes a software operation interface, wherein the software operation interface is implemented by self-programming and is used to display the first electrical signal, the second electrical signal and the temperature signal curve in real time.

[0052] As a specific embodiment, the use process of the AC line short circuit fault simulation device of the present invention is as follows.

[0053] The experimenter first closes the first switch 2 to observe whether there is a problem with the circuit. If there is no problem, the experimenter then closes the second switch 3 to observe whether there is a problem with the circuit.

[0054] The experimenter turns on the power of the first signal collector 9, the second signal collector 10, the third signal collector 11, the data sending module 12 and the data receiving module 13, and observes whether there are any faults in the lines and the components.

[0055] If there are no faults in the circuit and the components, the experimenter opens the software operation interface of the host computer 14, clicks the short-circuit fault experiment start button, and starts the short-circuit fault experiment.

[0056] The host computer 14 sends a control signal, and the controller 47 of the short-circuit fault generator 4 drives the motor slide 46 to move toward the first short-circuit metal plug-in 42 according to the control signal, thereby driving the second insulating column 45 and the second short-circuit metal plug-in 44 to move toward the first short-circuit metal plug-in 42. When the first short-circuit metal plug-in 42 and the second short-circuit metal plug-in 44 are in contact, that is, the sixth wire L3 (live wire) and the fifth wire N3 (neutral wire) are short-circuited, the current in the circuit rises rapidly, and the temperature of the first short-circuit metal plug-in 42 and the second short-circuit metal plug-in 44 rises rapidly, and a short-circuit fault occurs at this time. When the current in the circuit exceeds the current that the second switch 3 can withstand, the second switch 3 is disconnected. The experimental phenomenon can be observed in the shielding cover 41.

[0057] When a short circuit occurs, the first signal collector 9 collects the voltage signal between the third wire N2 and the fourth wire L2 and the current signal on the fourth wire L2 as the first electrical signal. The second signal collector 10 collects the voltage signal between the fifth wire N3 and the sixth wire L3 and the current signal on the sixth wire L3 as the second electrical signal. The third signal collector 11 collects the temperature signal of the temperature acquisition module 48.

[0058] The three signal collectors transmit the collected first electrical signal, second electrical signal and temperature signal to the data sending module 12, and the data sending module 12 wirelessly packages the signal and sends it to the data receiving module 13, which transmits it to the host computer 14 via the data receiving module 13. The host computer 14 displays the electrical signal and temperature signal curves at the moment of AC line short circuit and saves the experimental data. At this point, a short circuit fault simulation experiment is completed.

[0059] After the experiment is completed, the second insulating column 45 and the second short-circuit metal plug 44 are moved away from the first short-circuit metal plug 42 so that the first short-circuit metal plug 42 and the second short-circuit metal plug 44 are separated by a certain distance, so as to prepare for the next experiment.

[0060] Compared with the prior art, the AC line short circuit fault simulation device and method provided by the present invention have the following advantages:

[0061] (1) The AC source of the short-circuit fault simulation device of the present invention adopts an actual 220V AC source, and the AC short-circuit fault simulates a direct short connection between the neutral line and the live line, which is completely consistent with the actual situation of the actual AC short circuit.

[0062] (2) The short circuit fault simulated by the present invention occurs in the explosion-proof insulating shield 41, isolating the experimenter from the electric spark, thus ensuring the safety during the simulation. In addition, the present invention adopts a step protection double switch mode, which can ensure the effective disconnection of the line after the short circuit fault occurs.

[0063] (3) The signal collector of the present invention is powered by batteries, which eliminates the instantaneous electromagnetic interference caused by short circuit faults and the situation where power outages prevent data collection.

[0064] (4) The communication between the data sending module 12 and the data receiving module 13 is wireless, which solves the problem of complex on-site wiring and slow transmission rate.

[0065] (5) The AC line short-circuit fault simulation device and method provided by the present invention are highly operable, can perform short-circuit fault simulation at any time, and are easy to operate, which can greatly improve the authenticity of the short-circuit fault simulation and the credibility of the collected fault data.

[0066] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0067] The principles and implementation methods of the present invention are described in this article using specific examples. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. An AC line short circuit fault simulation device, characterized in that: include: AC source, a first switch, a first voltage sensor, a first current sensor, a first signal collector, a second switch, a second voltage sensor, a second current sensor, a second signal collector, a short circuit fault generator, a third signal collector, a data sending module, a data receiving module and a host computer; the AC source is a 220V AC source; The output end of the AC source is electrically connected to the input end of the first switch through a first wire and a second wire respectively; the output end of the first switch is electrically connected to the input end of the second switch through a third wire and a fourth wire respectively; the output end of the second switch is electrically connected to the input end of the short-circuit fault generator through a fifth wire and a sixth wire; the first voltage sensor is connected in parallel to the output end of the first switch; the first current sensor is passed through by the fourth wire; the second voltage sensor is connected in parallel to the output end of the second switch; the second current sensor is passed through by the sixth wire; the first voltage sensor and the first current sensor are both electrically connected to the first signal collector; the second voltage sensor and the second current sensor are both electrically connected to the second signal collector; the short-circuit fault generator is electrically connected to the third signal collector; the first signal collector, the second signal collector and the third signal collector are all electrically connected to the data sending module; the data sending module is communicatively connected to the data receiving module; the data receiving module is electrically connected to the host computer; the host computer is electrically connected to the short-circuit fault generator for controlling the operation of the short-circuit fault generator; The rated current of the first switch is greater than the rated current of the second switch; The short-circuit fault generator comprises: a shielding cover, a first short-circuit metal plug-in, a second short-circuit metal plug-in, a first insulating column, a second insulating column, a motor slide, a controller and a temperature acquisition module; The first short-circuit metal plug-in, the second short-circuit metal plug-in, the first insulating column, the second insulating column, the motor slide, the controller and the temperature acquisition module are all placed in the shielding cover; The first short-circuit metal plug-in is electrically connected to the sixth electric wire; the first short-circuit metal plug-in is fixed to the upper end of the first insulating column, and the lower end of the first insulating column is fixed to the bottom of the shielding cover; the second short-circuit metal plug-in is electrically connected to the fifth electric wire; the second short-circuit metal plug-in is fixed to the upper end of the second insulating column, and the lower end of the second insulating column is fixed on the motor slide; the controller is electrically connected to the motor slide, and is used to control the motor slide to move left and right, thereby driving the second short-circuit metal plug-in to move left and right; the controller is electrically connected to the host computer; the temperature acquisition module is fixed above the inner wall of the shielding cover, and is used to collect the temperature at the moment when the first short-circuit metal plug-in and the second short-circuit metal plug-in are in short-circuit contact; the temperature acquisition module is electrically connected to the third signal collector; the experimental phenomenon is observed through the shielding cover; The first signal collector, the second signal collector and the third signal collector have the same structure; The first signal collector includes: a battery, a power supply circuit, a filter circuit, a level conversion circuit, a first interface and a second interface; the battery is electrically connected to the input end of the power supply circuit; the output end of the power supply circuit is electrically connected to the filter circuit and the level conversion circuit respectively; the input end of the first interface of the first signal collector is electrically connected to the first voltage sensor and the first current sensor respectively; the input end of the first interface of the second signal collector is electrically connected to the second voltage sensor and the second current sensor respectively; the input end of the first interface of the third signal collector is electrically connected to the temperature acquisition module; the output end of the first interface is electrically connected to the input end of the filter circuit; the output end of the filter circuit is electrically connected to the input end of the level conversion circuit; the input end of the second interface is electrically connected to the output end of the level conversion circuit, and the output end of the second interface is electrically connected to the data sending module; The data sending module and the data receiving module are both wireless modules.

2. The AC line short circuit fault simulation device according to claim 1, characterized in that: The shielding cover material is insulating explosion-proof material.

3. The AC line short circuit fault simulation device according to claim 1, characterized in that: The temperature acquisition module uses a wireless temperature measurement method.

4. A method for simulating an AC line short-circuit fault, applied to the AC line short-circuit fault simulation device according to claim 1, characterized in that: include: Generate a control signal through the host computer and send it to the short-circuit fault generator; The short-circuit fault generator generates a short-circuit fault under the control of the control signal; The first signal collector collects a first electrical signal generated at the moment of the short-circuit fault through a first voltage sensor and a first current sensor and sends the signal to the data sending module; The second signal collector collects the second electrical signal generated at the moment of the short circuit fault through the second voltage sensor and the second current sensor and sends it to the data sending module; The third signal collector collects the temperature signal generated by the short-circuit fault through the short-circuit fault generator and sends it to the data sending module; The data sending module transmits the first electrical signal, the second electrical signal and the temperature signal to the data receiving module in a wireless manner, and transmits them to the host computer via the data receiving module for display.

5. The method for simulating AC line short circuit fault according to claim 4, characterized in that: The short-circuit fault generator generates a short-circuit fault under the control of the control signal, specifically comprising: The controller in the short-circuit fault generator drives the motor slide to move toward the first short-circuit metal plug-in under the control of the control signal, thereby driving the second insulating column and the second short-circuit metal plug-in to move toward the first short-circuit metal plug-in; until the first short-circuit metal plug-in contacts the second short-circuit metal plug-in, and a short-circuit fault occurs.

6. The method for simulating AC line short circuit fault according to claim 4, characterized in that: The host computer includes a software operation interface; the software operation interface is used to display the first electrical signal, the second electrical signal and the temperature signal curve in real time.

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