High-voltage lightning impulse testing device for electrical product

Abstract

A high-voltage lightning impulse testing device of an electrical product comprises a lightning impulse wave generator, a voltage dividing module, a plurality of impulse detection modules, a plurality of false impulse detection modules and a man-machine module. The voltage dividing module is connected with the discharge output end of the lightning shock wave generator. The electrical products are connected to the output end of the voltage dividing module in parallel. The plurality of impact detection modules are respectively connected in series with the corresponding electrical products to form an impact detection loop; the plurality of false impact detection modules are connected in parallel to the charging output end of the lightning impact wave generator, and each false impact detection module is connected in series with the end part of the corresponding electrical product to form a false impact detection loop; and the man-machine module is connected with the plurality of impact detection modules and the plurality of false impact detection modules so as to judge an impact result according to the first current signal of the impact detection loop and judge whether the electrical product is reliably contacted or not according to the second current signal of the false impact loop. The device can test multiple products at the same time, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of electrical products, in particular to a high-voltage lightning impulse test device for electrical products. Background Art

[0002] Lightning impulse test is an important step in the insulation test of products such as transformers and switchgear, and can be used to detect the insulation performance of products. At present, lightning impulse equipment usually only conducts tests at one fracture or one insulation position, resulting in slow efficiency in the product test process. Of course, there are also manufacturers that can conduct tests on multiple fractures and multiple insulation positions simultaneously. However, since there is only one equipment generator, if a chopped wave occurs, it is impossible to determine which product is abnormal, resulting in the need for each product to be reworked and tested one by one. Based on the above problems, there are waiting waste, personnel waste, and time waste in the product lightning impulse test process.

[0003] In addition, during the lightning impulse process of existing products, if the product is not reliably contacted with the equipment and enters the false impulse state, it can only be discovered after being transferred to the subsequent detection station, which will result in low product test efficiency, rework waste, and may also pose a quality risk. Summary of the Utility Model

[0004] The main purpose of the utility model is to overcome the defect of low efficiency in the existing high-voltage lightning impulse test, and propose a high-voltage lightning impulse test device for electrical products, which can conduct multi-product tests simultaneously to improve work efficiency.

[0005] The utility model adopts the following technical scheme:

[0006] A high-voltage lightning impulse test device for electrical products includes a lightning impulse wave generator, and also includes a voltage dividing module, several impulse detection modules, several false impulse detection modules, and a man-machine module; the voltage dividing module is connected to the discharge output end of the lightning impulse wave generator, and several electrical products are connected in parallel to the output end of the voltage dividing module; several of the impulse detection modules are respectively connected in series with the corresponding electrical products to form an impulse detection circuit; several of the false impulse detection modules are connected in parallel to the charging output end of the lightning impulse wave generator, and each of the false impulse detection modules is respectively connected in series with the end of the corresponding electrical product to form a false impulse detection circuit; the man-machine module is connected to several of the impulse detection modules and several of the false impulse detection modules to judge the impulse result of the corresponding electrical product according to the first current signal of the impulse detection circuit, and judge whether the corresponding electrical product is reliably contacted according to the second current signal of the false impulse circuit.

[0007] Further, the impact detection circuit includes a first switch, the electrical product, a current sensor, and a resistor R3 connected in series in sequence; the first switch is further connected to the voltage division module to control the on or off of the impact detection circuit; the current sensor is used to detect the first current signal when the impact detection circuit is on, and the resistor R3 is connected in parallel with the circuit sensor.

[0008] Further, it further includes a plurality of optical fiber transceivers, and the plurality of optical fiber transceivers are respectively connected to a plurality of light generators of the impact detection modules in a one-to-one correspondence to convert the first current of the corresponding impact detection circuit into an optical signal for transmission at the transmitting end and convert the optical signal into an electrical signal at the receiving end; the human-machine module is connected to the receiving end of the optical fiber transceiver to receive the electrical signal.

[0009] Further, each of the false impact detection modules includes a first false impact detection unit and a second false impact detection unit. The first false impact detection unit is connected in series with one end of the electrical product to form a first false impact detection circuit, and the second false impact detection unit is connected in series with the other end of the electrical product to form a second false impact detection circuit.

[0010] Further, the first false impact detection unit includes a second switch, a first protection resistor, and a first current transformer; the second switch, one end of the electrical product, the first protection resistor, and the first current transformer are connected in series in sequence to form the first false impact detection circuit, and the second switch is further connected to the charging output end of the lightning shock wave generator to control the on or off of the first false impact detection circuit.

[0011] Further, the second false impact detection unit includes a third switch, a second protection resistor, and a second current transformer; the third switch, the other end of the electrical product, the second protection resistor, and the current transformer are connected in series in sequence to form the second false impact detection circuit, and the third switch is further connected to the charging output end of the lightning shock wave generator to control the on or off of the second false impact detection circuit.

[0012] Further, it further includes a pressure sensor, the pressure sensor is arranged on the electrical product to detect the pressure information of the protective gas, and the human-machine module also acquires the pressure information.

[0013] Further, it further includes an earthing switch, and the earthing switch is connected in parallel with the voltage division module.

[0014] Further, the electrical product is a vacuum interrupter, a circuit breaker, or a switchgear cabinet.

[0015] Further, the voltage dividing module includes a first capacitor and a second capacitor. One end of the first capacitor is connected to the discharge output end of the lightning shock wave generator, and the other end is connected to one end of the second capacitor. The other end of the second capacitor is grounded.

[0016] As can be seen from the above description of the present invention, compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. In the present invention, a plurality of impact detection modules and a plurality of false impact detection modules are provided to perform lightning impact tests and false impact tests on multiple electrical products respectively. Multiple product tests can be carried out simultaneously and the impact results of multiple product combinations can be reliably determined, effectively improving the product test efficiency and also helping to improve the product quality.

[0018] 2. In the present invention, the impact detection circuit of the impact detection module includes a first switch, a current sensor, and a resistor R3 connected in series in sequence. The first current detected by the current sensor is transmitted to the human-machine module through a fiber optic transceiver for judgment. Using fiber optic transmission signals can prevent interference and ensure more accurate detection results.

[0019] 3. In the present invention, the false impact detection module includes a first false impact detection circuit and a second false impact detection circuit, and judges whether the contacts at both ends of the electrical product are reliable by detecting the second current in the detection circuit respectively, ensuring reliable contact of the electrical product.

[0020] 4. In the present invention, a pressure sensor is also provided to detect the pressure information of the protective gas in the electrical product, and the human-machine module also obtains the pressure information to judge whether the pressure of the protective gas meets the requirements.

[0021] 5. In the present invention, the provided false impact module can also be used for equipment self-check before testing, ensuring the reliable operation of the testing device, guaranteeing the product quality and the personal safety of employees.

[0022] 6. In the present invention, a grounding switch is also included. The grounding switch is connected in parallel with the voltage dividing module. When a test anomaly is found, the circuit can be grounded through the grounding switch.

[0023] 7. In the present invention, in order to trace the product test data, the human-machine module also records the electrical product, the voltage equalizing tooling, the station test information, the test process, and the test results. It reduces waste of product waiting, rework waste, personnel waste, and time waste, is convenient for tracing, guarantees personal safety, improves the product quality, and improves the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is the circuit diagram of the present invention;

[0025] Figure 2 is the composition diagram of the present invention;

[0026] Wherein:

[0027] 10. Lightning shock wave generator, 11. Charging generator, 12. Standard impulse voltage module; 20. Voltage dividing module; 30. Shock detection module; 40. False shock detection module; 50. Human-machine module; 60. Optical fiber transceiver; 70. Vacuum arc extinguishing chamber. Specific embodiments

[0028] The present utility model will be further described below through specific embodiments.

[0029] The terms "first", "second", etc. appearing in the present utility model are only for convenient description to distinguish different components with the same name, and do not indicate the sequence or primary-secondary relationship.

[0030] In the description of the present utility model, the orientation or positional relationship indicated by "up", "down", "left", "right", "front" and "back" is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model, rather than indicating or implying that the device referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the protection scope of the present utility model.

[0031] In addition, in the description of the present application, unless otherwise specified, "a plurality of" means two or more. "And / or" describes the association relationship of associated objects and indicates that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally represents an "or" relationship between the associated objects before and after.

[0032] See Figure 1 , a high-voltage lightning shock test device for an electrical product, including a lightning shock wave generator 10, a voltage dividing module 20, a plurality of shock detection modules 30, a plurality of false shock detection modules 40, a human-machine module 50, etc. The lightning shock wave generator 10 is based on the energy conversion principle. By a energy storage device (such as a capacitor), a large amount of electric energy is released in a short time to generate a high-voltage pulse, simulating the lightning shock voltage waveform. For example, the lightning shock wave generator 10 in the figure is mainly divided into a charging generator 11 and a standard impulse voltage module 12. The standard impulse voltage module 12 is provided with a capacitor C. The charging generator 11 is used to charge the capacitor C, and when the capacitor C discharges, a high-voltage pulse can be generated, and the generated high-voltage pulse is used for testing.

[0033] Among them, the charging generator 11 includes a transformer T, a capacitor C3, a diode EL1, a diode EL2, a resistor Rc, etc., and a standard impulse voltage module 12 (BIL body), which includes a capacitor C, a discharge spark gap SP, a resistor Rf, and a resistor Rt. The voltage dividing module 20 is connected to the discharge output end of the lightning shock wave generator 10, and it includes capacitors C1 and C2 connected in series. The discharge output end of the lightning shock wave generator 10 is also the output end of the standard impulse voltage module 12, specifically, the two ends of the resistor Rt. One end of the capacitor C1 is connected to one end of the resistor Rt, the other end of the capacitor C1 is connected to one end of the capacitor C2, and the other end of the capacitor C2 and the other end of the resistor Rt are grounded. One end of the capacitor C1 and the other end of the capacitor C2 serve as the output end of the voltage dividing module 20.

[0034] A number of electrical products are connected in parallel to the output end of the voltage dividing module 20. The electrical products tested in the present invention include a vacuum interrupter 70, a circuit breaker, a switchgear, etc. In the figure, the vacuum interrupter 70 is taken as an example. A number of vacuum interrupters 70 are connected in parallel to the output end of the voltage dividing module 20. In order to better realize the electrical connection between the vacuum interrupter 70 and the test device, a voltage equalizing cover Jig1 and a pulling tool Jig2 are respectively arranged at both ends of the vacuum interrupter 70. The voltage equalizing cover Jig1 is located at one end of the vacuum interrupter 70 for voltage equalizing and electrical connection functions, and the pulling tool Jig2 is located at the other end of the vacuum interrupter 70 for distance pulling and electrical connection functions. The voltage equalizing cover Jig1 and the pulling tool Jig2 in the figure are schematic diagrams, and the specific structure can be realized by using a conventional structure.

[0035] A number of impact detection modules 30 are respectively connected in series with the corresponding electrical products to form an impact detection circuit, and this impact detection circuit is used to perform lightning impulse tests. Then, multiple impact detection modules 30 can respectively perform lightning impulse tests on multiple electrical products. A number of false impact detection modules 40 are connected in parallel to the charging output end of the lightning shock wave generator 10, and each false impact detection module 40 is respectively connected in series with the end of the corresponding electrical product to form a false impact detection circuit, and this false impact detection circuit is used to perform false impact detections. Multiple false impact detection modules 40 respectively perform false impact tests on multiple electrical products.

[0036] Specifically, the impact detection circuit includes a first switch K1, an electrical product, a current sensor SPD, a resistor R3, etc. connected in series in sequence. The first switch K1 is also connected to the voltage dividing module 20 to control the on or off of the impact detection circuit. One end of the first switch K1 is connected to one end of the capacitor C1, and the other end of the first switch K1 is connected to the voltage equalizing cover Jig1 and one end of the vacuum interrupter 70. The current sensor SPD is used to detect the first current signal when the impact detection circuit is turned on. One end of the current sensor SPD is connected to the other end of the vacuum interrupter 70, and the other end of the current sensor SPD is grounded. The resistor R3 is connected in parallel with the circuit sensor.

[0037] Further, it further includes a plurality of optical fiber transceivers 60. The plurality of optical fiber transceivers 60 are respectively and correspondingly connected to the optical signal generators of the plurality of impact detection modules 30. At the transmitting end, the first current of the corresponding impact detection loop is converted into an optical signal for transmission, and at the receiving end, the optical signal is converted into an electrical signal. An optical fiber is connected between the transmitting end and the receiving end to transmit the optical signal. The human-machine module 50 is connected to the receiving end of the optical fiber transceiver. The human-machine module 50 can receive the electrical signal through the shock wave acquisition card. Using optical fiber transmission can play an anti-interference role.

[0038] Each false impact detection module 40 includes a first false impact detection unit and a second false impact detection unit. The first false impact detection unit is connected in series with one end of the electrical product to form a first false impact detection loop, and the second false impact detection unit is connected in series with the other end of the electrical product to form a second false impact detection loop. Each false impact detection module 40 is provided with two false impact detection units respectively for detecting whether both ends of the electrical product are in reliable contact.

[0039] Further, the first false impact detection unit includes a second switch K2, a first protection resistor R1, and a first current transformer CT1. The second switch K2, one end of the electrical product, the first protection resistor R1, and the first current transformer CT1 are sequentially connected in series to form a first false impact detection loop. The second switch K2 is also connected to the charging output end of the lightning shock wave generator 10. The second switch K2 is used to control the on or off of the first false impact detection loop. Specifically, taking the vacuum interrupter 70 as an example, one static end of the second switch K2 is connected to the charging output end of the lightning shock wave generator 10, that is, the output end of the transformer T. The other static end of the second switch K2 is connected to one end of the resistor R1. One moving end of the second switch K2 is connected to the grading cover Jig1, and the other moving end of the second switch K2 is connected to one end of the vacuum interrupter 70. The other end of the resistor R1 is connected to one end of the first current transformer CT1, and the other end of the first current transformer CT1 is grounded.

[0040] The second false impact detection unit includes a third switch K3, a second protection resistor R2, and a second current transformer CT2. The third switch K3, the other end of the electrical product, the second protection resistor R2, and the current transformer are sequentially connected in series to form a second false impact detection loop. The third switch K3 is also connected to the charging output end of the lightning shock wave generator 10. The third switch K3 is used to control the on or off of the second false impact detection loop. Specifically, taking the vacuum interrupter 70 as an example, one static end of the third switch K3 is connected to the charging output end of the lightning shock wave generator 10, that is, the output end of the transformer T. The other static end of the third switch K3 is connected to one end of the resistor R2. One moving end of the third switch K3 is connected to the pulling tooling Jig2, and the other moving end of the third switch K3 is connected to the other end of the vacuum interrupter 70. The other end of the resistor R2 is connected to one end of the second current transformer CT2, and the other end of the second current transformer CT2 is grounded.

[0041] Further, the utility model further includes a grounding switch, which is connected to the output end of the voltage dividing module 20, that is, one end of the grounding switch is connected to one end of the capacitor C1, and the other end of the grounding switch is grounded.

[0042] The human-machine module 50 is connected to a plurality of impact detection modules 30 and a plurality of false impact detection modules 40, and is used to judge the impact result of the corresponding electrical product according to the first current signal of the impact detection circuit during the lightning impact test, for example, comparing the first current signal with a set threshold to determine the lightning impact test result. The human-machine module 50 is used to judge whether the corresponding electrical product is in reliable contact according to the second current signal of the false impact circuit during the false impact test, for example, comparing the second current signal with a set second threshold to determine whether it is in reliable contact and avoid false impacts.

[0043] Further, a gas pressure sensor is also included. The gas pressure sensor is arranged on the electrical product to monitor the gas pressure information of the protective gas in the electrical product. The human-machine module 50 is connected to the gas pressure sensor to obtain the gas pressure information. If P ∈ [P1, P2], it is determined that the gas pressure is qualified; if P ∈ [0, P1) or P ∈ (P2, +∞), it is determined that the gas pressure deviates and the gas pressure value needs to be adjusted to ensure that P ∈ [P1, P2], where P1 and P2 are preset thresholds.

[0044] The device of the utility model is used to perform lightning impact tests and false impact tests on multiple electrical products at multiple stations respectively. Each station includes an electrical product to be tested, an impact detection module 30 and a false impact module. Based on the first current and the second current, each product can be judged respectively. See Figure 2 The human-machine module 50 further includes a PLC and a human-machine interface (HIM). The PLC is used to receive relevant information for analysis and judgment. The PLC is also connected to the first switch K1, the second switch K2, the third switch K3 and the grounding switch, etc. to control the states of each switch according to commands. The human-machine interface is used to provide an operation interface and display test results, etc.

[0045] The working principle of the utility model is as follows:

[0046] Self-check before starting work is required before the device runs normally:

[0047] Use a self-check sample to replace the electrical product to be tested, control the first switch K1 to open, the second switch K2 and the third switch K3 to close, control the charging generator 11 to charge the capacitor C, the first false impact detection circuit at the upper end of the self-check sample is turned on, and the current value I of the first current transformer CT1 is detected CT1 Judge whether the upper end of the self-check sample is in reliable contact. If I CT1> 0, the upper end of the self-check sample is in reliable contact with the device; similarly, the second false impact detection circuit at the lower end of the self-check sample is turned on, and the current value I of the second current transformer CT2 is detected. CT2 Judge whether the lower end of the self-check sample is in reliable contact. If I CT2 > 0, the lower end of the self-check sample is in reliable contact with the device. That is, when I CT1 > 0 and I CT2 > 0, it indicates that the contact between the device and the self-check sample is reliable, and the self-check of this station passes; otherwise, the self-check of this station fails.

[0048] After the charging generator 11 finishes charging the capacitor C, the second switch K2 and the third switch K3 are disconnected. Then control the first switch K1 to close, and the capacitor C discharges across the self-check sample through the voltage dividing module 20, and the impact detection circuit is turned on. The discharge voltage is less than the threshold value that the self-check sample can withstand, ensuring reliable detection of the qualified state of the device. In addition, discharge across the self-check sample again. If the leakage current detected by the current sensor SPD is too high, the grounding switch is automatically grounded to ensure personal safety.

[0049] Adopting self-check at the start of work can simulate the actual impact process of the product and ensure reliable impact judgment; when simulating the breakdown of the product, the grounding switch can be grounded in time to ensure personal safety.

[0050] In practical applications, self-check also includes inputting, identifying, and judging information such as products, voltage equalizing jigs, workstations, etc. through the HMI and PLC to ensure the corresponding relationship. Then, when the mechanical action of the lightning impulse test device is in place and enters the loading process stage, the PLC identifies the product model according to the input product information and issues an instruction for the device to load the corresponding model of the process program. Among them, the human-machine module 50 stores self-check data, impact data, etc. The self-check data includes the tooling serial number, workstation serial number, inspection simulation sample serial number, measurement module detection set voltage, safety disconnection protection detection set voltage, workstation detection current, safety overcurrent protection current; the impact data includes the tooling serial number, workstation serial number, product serial number, set voltage, actual impact voltage, discharge waveform diagram, discharge leakage current, tooling contact CT1 / CT2 current, etc.

[0051] Before the lightning impulse test process, use a self-check sample to simulate a false impact test to judge whether the contact between the electrical product and the voltage equalizing cover Jig1 and the pulling tooling Jig2 is normal. If the self-check process is qualified as described above, it will enter the lightning impulse test process; if the self-check process is unqualified, it will end.

[0052] Lightning impulse test process (taking the vacuum interrupter 70 as an example):

[0053] Open the vacuum interrupters 70 at each work station, control the first switch K1 to close, and the capacitor C discharges across the multiple vacuum interrupters 70 simultaneously through the voltage dividing module 20, i.e., multiple work stations are connected in parallel for lightning impulse tests. The impulse detection circuits corresponding to each vacuum interrupter 70 are turned on. The first current signal I is detected by the current sensor SPD, and the electrical signal is converted into an optical signal by the fiber optic transceiver 60. The optical signal is transmitted through the optical fiber and then converted back into an electrical signal and transmitted to the man-machine module 50 for judgment. If the first current signal I detected by the impulse detection circuit of a certain vacuum interrupter 70 is greater than I1, where I1 is a pre-set threshold, it is determined that the product of the vacuum interrupter 70 in this impulse detection circuit is unqualified, i.e., it is punctured and a leakage current is generated, and the first control switch K1 of this impulse detection circuit is controlled to open; if the first current signal I detected by the impulse detection circuit of a certain vacuum interrupter 70 is less than or equal to I1, it is determined that this vacuum interrupter 70 is qualified.

[0054] In practical applications, the products are tested in batches. When testing each batch of products, the lightning impulse test for each vacuum interrupter 70 can be carried out once or multiple times. After the current batch of products is tested, the test process data and test results are stored, and then a new round of product testing will be carried out. There is no need to perform self-checking at the start of work for the new round of testing, and it can directly enter the process of reading information. If the previous process is abnormal and the work station is locked (for example, when self-checking, if it is determined that the electrical product is not in good contact with the grading hood JIG1 or the pulling tooling JIG2, it needs to be locked, and the locking can be achieved by prohibiting any mechanical action on this work station), it is necessary to re-check the equipment before proceeding.

[0055] False impulse test process (taking the vacuum interrupter 70 as an example):

[0056] If the vacuum interrupters 70 at each work station are in the open state, control the first switch K1 to open, and the second switch K2 and the third switch K3 to close. The charging generator 11 charges the capacitor C and conducts the upper end of the vacuum interrupter 70 through the grading hood Jig1, i.e., the first false impulse detection circuit is turned on. The man-machine module 50 judges whether the upper end of the vacuum interrupter 70 is in good contact by collecting the current value I of the first current transformer CT1. CT1 If I CT1 > 0, the upper end of the vacuum interrupter 70 is in good contact; similarly, the second false impulse detection circuit is turned on, and the man-machine module 50 judges whether the lower end of the vacuum interrupter 70 is in good contact by collecting the current value I of the second current transformer CT2. CT2 If I CT2 > 0, the lower end of the vacuum interrupter 70 is in good contact. After the charging generator 11 finishes charging the capacitor C, the second switch K2 and the third switch K3 are disconnected.

[0057] If the vacuum interrupters 70 at each work station are in the closing state, control the first switch K1 to open, the second switch K2 and the third switch K3 to close, the charging generator 11 charges the capacitor C, and conducts the upper and lower ends of the vacuum interrupter 70 through the grading hood Jig1 and the pulling tooling Jig2 respectively. The first false impact detection circuit and the second false impact circuit are respectively connected. The man-machine module 50 judges whether the two ends of the vacuum interrupter 70 are in reliable contact through the current value I CT1 of the first current transformer CT1 and the current value I CT2 of the second current transformer CT2. For example, if I CT1 > 0 and I CT2 > 0, the contact at both ends of the vacuum interrupter 70 is reliable. After the charging generator 11 finishes charging the capacitor C, the second switch K2 and the third switch K3 are disconnected, and the vacuum interrupter 70 automatically opens.

[0058] The above is only the specific implementation manner of the present invention, but the design concept of the present invention is not limited thereto. Any non-substantive modification made to the present invention using this concept shall fall within the scope of infringement of the protection scope of the present invention.

Claims

1. A high-voltage lightning impulse test device for an electrical product, comprising a lightning shock wave generator, characterized in that, It also includes a voltage dividing module, several impact detection modules, several false impact detection modules, and a human-machine module; the voltage dividing module is connected to the discharge output terminal of the lightning shock wave generator, and several electrical products are connected in parallel to the output terminal of the voltage dividing module; several of the impact detection modules are respectively connected in series with the corresponding electrical products to form an impact detection loop; several of the false impact detection modules are connected in parallel to the charging output terminal of the lightning shock wave generator, and each of the false impact detection modules is respectively connected in series with the end of the corresponding electrical product to form a false impact detection loop; the human-machine module is connected to several of the impact detection modules and several of the false impact detection modules to judge the impact result of the corresponding electrical product according to the first current signal of the impact detection loop, and to judge whether the corresponding electrical product is in reliable contact according to the second current signal of the false impact loop.

2. The high-voltage lightning impulse test device for an electrical product according to claim 1, characterized in that: The impact detection loop includes a first switch, the electrical product, a current sensor, and a resistor R3 connected in series in sequence; the first switch is also connected to the voltage dividing module to control the on or off of the impact detection loop; the current sensor is used to detect the first current signal when the impact detection loop is on, and the resistor R3 is connected in parallel with the circuit sensor.

3. The high-voltage lightning impulse test device for an electrical product according to claim 2, characterized in that: It also includes several optical fiber transceivers, and several of the optical fiber transceivers are respectively connected in one-to-one correspondence with several of the impact detection module optical generators to convert the first current of the corresponding impact detection loop into an optical signal for transmission at the transmitting end, and convert the optical signal into an electrical signal at the receiving end; the human-machine module is connected to the receiving end of the optical fiber transceiver to receive the electrical signal.

4. The high-voltage lightning impulse test device for an electrical product according to claim 2, characterized in that: Each of the false impact detection modules includes a first false impact detection unit and a second false impact detection unit. The first false impact detection unit is connected in series with one end of the electrical product to form a first false impact detection loop, and the second false impact detection unit is connected in series with the other end of the electrical product to form a second false impact detection loop.

5. The high-voltage lightning impulse test device for an electrical product according to claim 4, characterized in that: The first false impact detection unit includes a second switch, a first protection resistor, and a first current transformer; the second switch, one end of the electrical product, the first protection resistor, and the first current transformer are connected in series in sequence to form the first false impact detection loop, and the second switch is also connected to the charging output terminal of the lightning shock wave generator to control the on or off of the first false impact detection loop.

6. The high-voltage lightning impulse test device for an electrical product according to claim 4, wherein: The second false impact detection unit includes a third switch, a second protection resistor, and a second current transformer; the third switch, the other end of the electrical product, the second protection resistor, and the current transformer are connected in series in sequence to form the second false impact detection loop, and the third switch is also connected to the charging output terminal of the lightning shock wave generator to control the on or off of the second false impact detection loop.

7. The high-voltage lightning impulse test device for an electrical product according to claim 1, characterized in that: It also includes a pressure sensor, the pressure sensor is arranged on the electrical product to detect the pressure information of the protective gas, and the human-machine module also acquires the pressure information.

8. The high-voltage lightning impulse test device for an electrical product as described in claim 1, wherein: It also includes an earthing switch, and the earthing switch is connected in parallel with the voltage dividing module.

9. The high-voltage lightning impulse test device for an electrical product according to claim 1, characterized in that: The electrical product is a vacuum interrupter or a circuit breaker or a switchgear cabinet.

10. The high-voltage lightning impulse test device for an electrical product according to claim 1, characterized in that: The voltage dividing module includes a first capacitor and a second capacitor. One end of the first capacitor is connected to the discharge output end of the lightning shock wave generator, and the other end is connected to one end of the second capacitor. The other end of the second capacitor is grounded.

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