A transformer impulse voltage testing device for lightning environment

Abstract

This invention discloses a transformer impulse voltage testing device for lightning environments. The invention relates to the technical field of voltage testing devices. The testing device includes a base, a chassis, an auxiliary mechanism, a voltage divider, and an impulse voltage generator. The chassis, auxiliary mechanism, voltage divider, and impulse voltage generator are all fixedly connected to the base. The voltage divider is connected to the auxiliary mechanism and the impulse voltage generator via wiring. The auxiliary mechanism is connected to the chassis via electrical signals. The auxiliary mechanism includes a base, an air blowing mechanism, and side rods. Two sets of side rods are provided, located on both sides of the base. Several sets of air blowing mechanisms are provided, linearly and evenly distributed along the side rods. This invention can effectively simulate lightning environments and the testing structure of insulation products. During testing, it protects the impulse voltage generator and voltage divider from damage caused by enormous energy, while simultaneously accelerating the purging process, significantly improving the insulation recovery speed of the gap and enhancing testing efficiency.

Description

Technical Field

[0001] This invention relates to the field of voltage testing device technology, specifically a lightning environment transformer impulse voltage testing device. Background Technology

[0002] As a core component of the power grid, the reliability of the insulation performance of power transformers directly affects the safe and stable operation of the entire power system. In nature, lightning overvoltage waves generated when lightning strikes transmission lines or the nearby ground can intrude into substations along the lines, posing a serious threat to transformer windings. These lightning impulse voltages are characterized by high amplitude, steep wavefronts, and short durations. If the transformer insulation design is inadequate, it can easily lead to breakdown of its main insulation, causing huge economic losses.

[0003] Currently, widely used impulse voltage testing devices generally employ a generator as their core. They generate the required high-voltage impulse pulse through the principle of charging multiple capacitors in parallel and then discharging them in series through a spark gap switch. However, existing testing devices generally suffer from limited cutoff control performance. The cutoff device used to generate the cutoff wave, such as a three-electrode ball gap, is significantly affected by environmental factors such as air pressure, humidity, and electrode erosion, resulting in large dispersion in cutoff time, low repeatability, and low accuracy. Repeated manual cleaning of the cutoff device makes continuous testing impossible, hindering the improvement of testing efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a transformer impulse voltage testing device for lightning environments, so as to solve the problems in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A lightning environment transformer impulse voltage testing device includes a platform, a chassis, an auxiliary mechanism, a voltage divider, and an impulse voltage generator. The chassis, auxiliary mechanism, voltage divider, and impulse voltage generator are all fixedly connected to the platform. The voltage divider is connected to the auxiliary mechanism and the impulse voltage generator via wiring. The auxiliary mechanism is connected to the chassis via electrical signals.

[0006] The auxiliary mechanism includes a base, an air blowing mechanism, and a side rod frame. There are two sets of side rod frames, which are located on both sides of the base. There are several sets of air blowing mechanisms, which are evenly distributed linearly along the side rod frames.

[0007] This invention relates to a specialized high-voltage testing device for simulating high-amplitude, steep-front, and short-duration impulse voltages generated by lightning in the laboratory and applying them to an insulation model to test the insulation system's withstand capability under lightning overvoltage. The impulse voltage generator is charged in parallel and then discharged instantaneously in series through a spark gap switch, thereby multiplying the charging voltage to obtain an extremely high impulse voltage at the output terminal. This voltage is measured by a voltage divider and ensured by an auxiliary mechanism that coordinates the entire testing process. The auxiliary mechanism controls the timing of the breakdown, which can suddenly cut off the impulse voltage to zero before or after it reaches its peak value, thereby generating a wavefront-cutoff or wavetail-cutoff impulse wave to simulate the flashover of insulation products under overvoltage. The metal vapor and pyrolysis gas generated by the arc can contaminate the gap, slowing down the recovery of its insulation strength. During rapid continuous testing, this may lead to self-breakdown or failure to cut off. Through a blowing mechanism arranged linearly and evenly along the side rods on both sides of the base, after each cut-off discharge, the controller immediately opens the valve and sprays a high-speed, clean insulating gas stream into the gap, accelerating the purging and significantly improving the insulation recovery speed of the gap.

[0008] Furthermore, the auxiliary mechanism also includes a top platform, a protective resistor, and a cutting-off mechanism. The top platform and the protective resistor are fixedly connected to the side frame, and the cutting-off mechanism is fixedly connected to the base and the protective resistor.

[0009] The auxiliary mechanism's protective resistor is a resistor with a small resistance value but a large power and heat capacity, connected in series in the main circuit. In the event of flashover or breakdown of the test sample, it can limit the short-circuit current and protect the impulse voltage generator body and voltage divider from damage by huge energy. The cutting-off mechanism includes a three-electrode ball gap connected in parallel across the test sample. By controlling its breakdown timing, it can suddenly cut off the impulse voltage to zero before or after it rises to its peak value, thereby generating a wavefront-cutoff or wave tail-cutoff impulse wave to simulate the flashover of the insulation product under overvoltage.

[0010] Furthermore, the blowing mechanism includes an annular shell and an inner core. The annular shell is fixedly connected to the side rod frame, and the inner core is rotatably connected to the annular shell. An arc rail is provided on the annular shell, and a solenoid valve is provided on the inner core. The solenoid valve is in contact with the arc rail and is connected to the chassis via an electrical signal.

[0011] An external air pump supplies air to the core via a solenoid valve. The core then supplies air to the outside for purification. The core rotates within the annular cavity. After each discharge interruption, the chassis sends an electrical control signal to immediately open the solenoid valve, which then sprays a high-speed, clean insulating gas stream into the gap through the core. This accelerates the purging process and significantly improves the insulation recovery speed of the gap. The solenoid valve deflects within the arc track, adjusting the angle at which the airflow blows into the gap.

[0012] Furthermore, the annular cavity shell is also provided with a direct injection port, a first arc injection port and a second arc injection port. Several groups of direct injection ports, first arc injection ports and second arc injection ports are provided. The several groups of direct injection ports, first arc injection ports and second arc injection ports are linearly and evenly distributed along the axis of the annular cavity shell. The first arc injection port and the second arc injection port are respectively located on both sides of the direct injection port.

[0013] The chassis sends an electrical control signal to immediately open the solenoid valve, which then sprays a high-speed, clean insulating gas stream into the gap through the core, accelerating the purging process and significantly improving the insulation recovery speed of the gap. The solenoid valve deflects within the arc track, contacting the airflow through the direct nozzle, the first arc nozzle, and the second arc nozzle, respectively, adjusting the angle at which the airflow blows into the gap.

[0014] Furthermore, the core is also equipped with jet nozzles, which are arranged in several groups. These groups of jet nozzles are linearly and evenly distributed along the axis of the annular shell. The jet nozzles are in contact with the direct jet nozzle, the first arc nozzle, and the second arc nozzle.

[0015] The chassis sends an electrical control signal to immediately open the solenoid valve, and the core supplies air to the outside for purification. The core rotates in the annular cavity shell. After each cut-off discharge, the jet nozzle sequentially contacts the direct nozzle, the first arc nozzle, and the second arc nozzle to spray a high-speed, clean insulating gas stream into the gap.

[0016] Furthermore, the blowing mechanism also includes a servo motor and a gear rod. The annular cavity shell is also provided with a rotating hole. The servo motor is fixedly connected to the annular cavity shell. The servo motor and the output end are fixedly connected to the gear rod. The gear rod is rotatably connected to the rotating hole. The core is also provided with an annular tooth groove. The gear rod meshes with the tooth surface of the annular tooth groove. The servo motor is connected to the chassis via an electrical signal.

[0017] The chassis sends an electrical control signal to immediately open the solenoid valve and servo motor. The core supplies air to the outside for purification, and the servo motor outputs a fixed-axis torque to the gear rod. The gear rod rotates around its axis in the rotating hole. Through the meshing of the gear rod with the tooth surface between the gear rod and the ring tooth groove, the gear rod torque is transmitted to the core. The core rotates in the ring cavity shell and sprays a high-speed, clean insulating gas flow into the gap, which accelerates the purging and significantly improves the insulation recovery speed of the gap.

[0018] Furthermore, the cutting mechanism includes a base, an assembly frame, and a three-electrode ball gap. The base is fixedly connected to the base and the assembly frame, and the three-electrode ball gap is fixedly connected to the protective resistor of the assembly frame.

[0019] The protective resistor is a resistor with a small resistance value but a large power and heat capacity. It is connected in series in the main circuit. In case of flashover or breakdown of the test sample, it can limit the short-circuit current and protect the impulse voltage generator and voltage divider from damage by huge energy. The three-electrode ball gap is connected in parallel across the test sample. By controlling its breakdown timing, it can be suddenly cut off to zero before or after the impulse voltage rises to the peak value, thereby generating a wavefront cutoff or wave tail cutoff impulse wave to simulate the flashover of the insulation product under overvoltage.

[0020] Furthermore, the impulse voltage generator includes a charging resistor, a main capacitor, a wavefront resistor, and a wave tail resistor. The charging resistor is fixedly connected to the main capacitor, the wavefront resistor, the wave tail resistor, and the ground platform.

[0021] Multi-stage main capacitors are charged in parallel and then discharged instantaneously in series through a spark gap switch, thereby multiplying the charging voltage. When the main capacitor is charging, it limits the charging current to protect the power supply. When discharging, it is isolated from the next stage and obtains an extremely high impulse voltage at the output terminal. The wavefront resistor and the wavetail resistor determine the shape of the output waveform. The wavefront resistor mainly affects the rise time of the voltage, and the wavetail resistor mainly affects the fall time of the voltage.

[0022] Compared with the prior art, the beneficial effects of this invention are as follows: This invention designs an auxiliary mechanism, with a protective resistor that is a resistor with a small resistance value but a large power and heat capacity, connected in series in the main circuit. In the event of flashover or breakdown of the test sample, it can limit the short-circuit current and protect the impulse voltage generator body and voltage divider from damage by huge energy. This invention also designs a blowing mechanism. The metal vapor and pyrolysis gas generated by the electric arc can contaminate the gap, causing its insulation strength to recover slowly, which may lead to self-breakdown or failure during rapid continuous testing. Through the blowing mechanism arranged linearly and evenly along the side rods on both sides of the base, the chassis sends an electrical control signal to immediately open the solenoid valve and servo motor, the core supplies air to the outside for purification, and the servo motor outputs a fixed-axis torque to the gear rod. The gear rod rotates around its axis in the rotating hole, and the gear rod meshes with the tooth surface between the ring tooth groove. The torque of the gear shaft is transmitted to the core, which rotates within the annular cavity. After each interruption discharge, the jet nozzle sequentially contacts the direct nozzle, the first arc nozzle, and the second arc nozzle, injecting a high-speed, clean insulating gas stream into the gap. This accelerates the purging process and significantly improves the insulation recovery speed of the gap. The invention incorporates a cutoff mechanism, including a three-electrode ball gap connected in parallel across the test sample. By controlling the breakdown timing, the impulse voltage can be suddenly cut off to zero before or after reaching its peak value, thereby generating a wavefront-cutoff or wavetail-cutoff impulse wave to simulate the flashover of insulating products under overvoltage. This invention can effectively simulate lightning environments and the test structure of insulating products. During testing, it protects the impulse voltage generator and voltage divider from damage caused by enormous energy, while simultaneously accelerating the purging process, significantly improving the insulation recovery speed of the gap, and enhancing testing efficiency. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the auxiliary mechanism structure of the present invention;

[0025] Figure 3 for Figure 2 A magnified view of part A;

[0026] Figure 4 This is a schematic diagram of the air blowing mechanism of the present invention;

[0027] Figure 5 for Figure 4 A magnified view of part B;

[0028] Figure 6 This is an isometric schematic diagram of the air blowing mechanism of the present invention;

[0029] Figure 7 This is a schematic diagram of the cutting mechanism structure of the present invention;

[0030] Figure 8 This is a schematic diagram of the impulse voltage generator structure of the present invention.

[0031] In the diagram: 1. Platform; 2. Chassis; 3. Auxiliary mechanism; 31. Base; 32. Air blowing mechanism; 321. Annular cavity shell; 3211. Arc rail; 3212. Rotary hole; 3213. Direct nozzle; 3214. First arc nozzle; 3215. Second arc nozzle; 322. Core; 3221. Air nozzle; 3222. Solenoid valve; 3223. Ring tooth groove; 323. Servo motor; 324. Gear rod; 33. Top platform; 34. Side rod frame; 35. Protective resistor; 36. Cut-off mechanism; 361. Base platform; 362. Assembly frame; 363. Three-electrode ball gap; 4. Voltage divider; 5. Impulse voltage generator; 51. Charging resistor; 52. Main capacitor; 53. Wavefront resistor; 54. Wavetail resistor. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] like Figure 1 , Figure 2 As shown, the present invention provides a technical solution for a lightning environment transformer impulse voltage testing device, which includes a base 1, a chassis 2, an auxiliary mechanism 3, a voltage divider 4, and an impulse voltage generator 5. The chassis 2, the auxiliary mechanism 3, the voltage divider 4, and the impulse voltage generator 5 are all fixedly connected to the base 1. The voltage divider 4 is connected to the auxiliary mechanism 3 and the impulse voltage generator 5 through a line. The auxiliary mechanism 3 is connected to the chassis 2 through an electrical signal.

[0034] The auxiliary mechanism 3 includes a base 31, an air blowing mechanism 32, and a side rod frame 34. There are two sets of side rod frames 34, which are located on both sides of the base 31. There are several sets of air blowing mechanisms 32, which are linearly and evenly distributed along the side rod frames 34.

[0035] This invention relates to a specialized high-voltage testing device for simulating high-amplitude, steep-front, and short-duration impulse voltages generated by natural lightning in a laboratory setting. This impulse voltage is applied to an insulation model to test the insulation system's withstand capability under lightning overvoltage. The impulse voltage generator 5 is charged in parallel and then instantaneously discharged in series via a spark switch, thus multiplying the charging voltage to obtain an extremely high impulse voltage at the output. This voltage is measured by a voltage divider 4 and ensured by an auxiliary mechanism 3, which coordinates the entire testing process. The auxiliary mechanism 3 controls the breakdown timing of the impulse voltage. The surge is abruptly cut off to zero before or after reaching its peak, generating a wavefront cutoff or wave tail cutoff shock wave to simulate the flashover of insulation products under overvoltage. The metal vapor and pyrolysis gas generated by the arc will contaminate the gap, causing its insulation strength to recover slowly. During rapid continuous testing, this may lead to self-breakdown or cutoff failure. Through the air blowing mechanism 32 arranged linearly and evenly along the side rods 34 on both sides of the base 31, after each cutoff discharge, the controller immediately opens the valve and sprays a high-speed, clean insulating gas stream into the gap, accelerating the purging and significantly improving the insulation recovery speed of the gap.

[0036] like Figure 2 As shown, the auxiliary mechanism 3 also includes a top platform 33, a protective resistor 35, and a cutting-off mechanism 36. The top platform 33 and the protective resistor 35 are both fixedly connected to the side frame 34, and the cutting-off mechanism 36 is fixedly connected to the base 31 and the protective resistor 35.

[0037] The protective resistor 35 of the auxiliary mechanism 3 is a resistor with a small resistance value but a large power and heat capacity. It is connected in series in the main circuit. In case of flashover or breakdown of the test sample, it can limit the short-circuit current and protect the impulse voltage generator 5 and the voltage divider 4 from being damaged by huge energy. The cutting-off mechanism 36 includes a three-electrode ball gap 363 connected in parallel across the test sample. By controlling its breakdown timing, it can suddenly cut off the impulse voltage to zero before or after it rises to the peak value, thereby generating a wavefront cutoff or wave tail cutoff impulse wave to simulate the flashover of the insulation product under overvoltage.

[0038] like Figure 3 , Figure 4 As shown, the air blowing mechanism 32 includes an annular cavity shell 321 and a core 322. The annular cavity shell 321 is fixedly connected to the side rod frame 34, and the core 322 is rotatably connected to the annular cavity shell 321. An arc rail 3211 is provided on the annular cavity shell 321, and a solenoid valve 3222 is provided on the core 322. The solenoid valve 3222 is in contact with the arc rail 3211, and the solenoid valve 3222 is connected to the chassis 2 via an electrical signal.

[0039] An external air pump supplies air to the core 322 through the solenoid valve 3222. The core 322 purifies the external air supply. The core 322 rotates within the annular shell 321. After each cut-off discharge, the chassis 2 sends an electrical control signal to immediately open the solenoid valve 3222. A high-speed, clean insulating gas stream is then injected into the gap through the core 322, accelerating the purging process and significantly improving the insulation recovery speed of the gap. The solenoid valve 3222 deflects within the arc rail 3211, adjusting the angle at which the airflow blows into the gap.

[0040] like Figure 4 , Figure 5 As shown, the annular cavity shell 321 is also provided with a direct injection port 3213, a first arc injection port 3214, and a second arc injection port 3215. The direct injection port 3213, the first arc injection port 3214, and the second arc injection port 3215 are each provided in several groups. The several groups of direct injection ports 3213, the first arc injection port 3214, and the second arc injection port 3215 are all linearly and evenly distributed along the axis of the annular cavity shell 321. The first arc injection port 3214 and the second arc injection port 3215 are respectively located on both sides of the direct injection port 3213.

[0041] The chassis 2 sends an electrical control signal to immediately open the solenoid valve 3222, which sprays a high-speed, clean insulating gas stream into the gap through the core 322, accelerating the purging and significantly improving the insulation recovery speed of the gap. The solenoid valve 3222 deflects within the arc rail 3211, and contacts the airflow through the direct nozzle 3213, the first arc nozzle 3214, and the second arc nozzle 3215 respectively, adjusting the angle at which the airflow blows into the gap.

[0042] like Figure 5 As shown, the core 322 is also provided with a jet nozzle 3221. The jet nozzle 3221 is provided in several groups. The jet nozzles 3221 are all linearly and evenly distributed along the axis of the annular cavity shell 321. The jet nozzles 3221 are in contact with the direct nozzle 3213, the first arc nozzle 3214, and the second arc nozzle 3215.

[0043] The chassis 2 sends an electrical control signal to immediately open the solenoid valve 3222, and the core 322 supplies external air for purification. The core 322 rotates inside the annular shell 321. After each cut-off discharge, the jet nozzle 3221 sequentially contacts the direct nozzle 3213, the first arc nozzle 3214, and the second arc nozzle 3215 to spray a high-speed, clean insulating gas flow into the gap.

[0044] like Figure 6As shown, the air blowing mechanism 32 also includes a servo motor 323 and a gear rod 324. The annular cavity shell 321 is also provided with a rotating hole 3212. The servo motor 323 is fixedly connected to the annular cavity shell 321. The servo motor 323 and its output end are fixedly connected to the gear rod 324. The gear rod 324 is rotatably connected to the rotating hole 3212. The core 322 is also provided with an annular tooth groove 3223. The gear rod 324 meshes with the tooth surface of the annular tooth groove 3223. The servo motor 323 is connected to the chassis 2 via an electrical signal.

[0045] The chassis 2 sends an electrical control signal to immediately open the solenoid valve 3222 and the servo motor 323. The core 322 supplies air to the outside for purification, and the servo motor 323 outputs fixed-axis torque to the gear rod 324. The gear rod 324 rotates around its axis in the rotating hole 3212. Through the meshing of the gear rod 324 with the ring tooth groove 3223, the torque of the gear rod 324 is transmitted to the core 322. The core 322 rotates in the ring cavity shell 321 and sprays a high-speed, clean insulating gas flow into the gap, which accelerates the purging and significantly improves the insulation recovery speed of the gap.

[0046] like Figure 7 As shown, the cutting mechanism 36 includes a base 361, an assembly frame 362, and a three-electrode ball gap 363. The base 361 is fixedly connected to the base 31 and the assembly frame 362, and the three-electrode ball gap 363 is fixedly connected to the protection resistor 35 of the assembly frame 362.

[0047] The protective resistor 35 is a resistor with a small resistance value but a large power and heat capacity. It is connected in series in the main circuit. In case of flashover or breakdown of the test sample, it can limit the short-circuit current and protect the impulse voltage generator 5 and the voltage divider 4 from being damaged by huge energy. The three-electrode ball gap 363 is connected in parallel across the test sample. By controlling its breakdown timing, it can be suddenly cut off to zero before or after the impulse voltage rises to the peak value, thereby generating a wavefront cutoff or wave tail cutoff impulse wave to simulate the flashover of the insulation product under overvoltage.

[0048] like Figure 8 As shown, the impulse voltage generator 5 includes a charging resistor 51, a main capacitor 52, a wavefront resistor 53, and a wave tail resistor 54. The charging resistor 51 is fixedly connected to the main capacitor 52, the wavefront resistor 53, the wave tail resistor 54, and the base 1.

[0049] The multi-stage main capacitor 52 is charged in parallel and then discharged instantaneously in series through a spark gap switch, thereby multiplying the charging voltage. When the main capacitor 52 is charging, it limits the charging current and protects the power supply. When discharging, it is isolated from the next stage and obtains an extremely high impulse voltage at the output terminal. The wavefront resistor 53 and the wavetail resistor 54 determine the shape of the output waveform. The wavefront resistor 53 mainly affects the rise time of the voltage, and the wavetail resistor 54 mainly affects the fall time of the voltage.

[0050] The working principle of this invention: The impulse voltage generator 5 is charged in parallel and then discharged instantaneously in series through a spark gap switch, thereby multiplying the charging voltage and obtaining an extremely high impulse voltage at the output terminal. This voltage is measured by the voltage divider 4 and guaranteed by the auxiliary mechanism 3, which coordinates the entire testing process. The auxiliary mechanism 3 controls the breakdown timing and can suddenly cut off the impulse voltage to zero before or after it reaches its peak value, thereby generating a wavefront cutoff or wave tail cutoff impulse wave to simulate the flashover of the insulation product under overvoltage. The metal vapor and pyrolysis gas generated by the arc will contaminate the gap, making its insulation strength recovery slow. In rapid continuous testing, this may lead to self-breakdown or failure to cut off. Through the air blowing mechanism 32 arranged linearly and evenly distributed along the side rods 34 on both sides of the base 31, the chassis 2 sends an electrical control signal to immediately open the solenoid valve 3222 and the servo motor 323. The core 322 supplies external air for purification. The servo motor 323 outputs fixed-axis torque to the gear rod 324. The gear rod 324 rotates around its axis in the rotating hole 3212. Through the meshing of the gear rod 324 with the ring tooth groove 3223, the torque of the gear rod 324 is transmitted to the core 322. The core 322 rotates in the annular cavity shell 321. After each cut-off discharge, the jet nozzle 3221 contacts the direct jet nozzle 3213, the first arc jet nozzle 3214, and the second arc jet nozzle 3215 in sequence, spraying a high-speed, clean insulating gas flow into the gap, accelerating the purging and significantly improving the insulation recovery speed of the gap. The solenoid valve 3222 deflects in the arc rail 3211, and touches the airflow through the direct jet nozzle 3213, the first arc jet nozzle 3214, and the second arc jet nozzle 3215 respectively, adjusting the angle of the airflow blowing into the gap, accelerating the purging and significantly improving the insulation recovery speed of the gap.

[0051] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A lightning ambient transformer impulse voltage test device, said test device comprising a floor (1), characterized in that: The testing device also includes a chassis (2), an auxiliary mechanism (3), a voltage divider (4), and an impulse voltage generator (5). The chassis (2), auxiliary mechanism (3), voltage divider (4), and impulse voltage generator (5) are all fixedly connected to the platform (1). The voltage divider (4) is connected to the auxiliary mechanism (3) and the impulse voltage generator (5) via wiring. The auxiliary mechanism (3) is connected to the chassis (2) via electrical signals. The auxiliary mechanism (3) includes a base (31), an air blowing mechanism (32) and a side rod frame (34). The side rod frame (34) is provided in two sets, and the two sets of side rod frames (34) are provided on both sides of the base (31). The air blowing mechanism (32) is provided in several sets, and the several sets of air blowing mechanisms (32) are linearly and evenly distributed along the side rod frame (34). The air blowing mechanism (32) includes an annular cavity shell (321) and a core (322). The annular cavity shell (321) is fixedly connected to the side rod frame (34), and the core (322) is rotatably connected to the annular cavity shell (321). An arc rail (3211) is provided on the annular cavity shell (3211), and a solenoid valve (3222) is provided on the core (322). The solenoid valve (3222) is in contact with the arc rail (3211), and the solenoid valve (3222) is connected to the chassis (2) by an electrical signal. The annular cavity shell (321) is also provided with a direct injection port (3213), a first arc injection port (3214) and a second arc injection port (3215). The direct injection port (3213), the first arc injection port (3214) and the second arc injection port (3215) are each provided with several groups. The several groups of direct injection ports (3213), first arc injection ports (3214) and second arc injection ports (3215) are all linearly and evenly distributed along the axis of the annular cavity shell (321). The first arc injection port (3214) and the second arc injection port (3215) are respectively provided on both sides of the direct injection port (3213). The core (322) is also provided with a jet nozzle (3221), and the jet nozzle (3221) is provided in several groups. The jet nozzle (3221) is linearly and evenly distributed along the axis of the annular cavity shell (321). The jet nozzle (3221) is in contact with the direct nozzle (3213), the first arc nozzle (3214), and the second arc nozzle (3215).

2. A lightning environment transformer impulse voltage test device according to claim 1, characterized in that: The auxiliary mechanism (3) also includes a top platform (33), a protective resistor (35) and a cutting mechanism (36). The top platform (33) and the protective resistor (35) are fixedly connected to the side frame (34), and the cutting mechanism (36) is fixedly connected to the base (31) and the protective resistor (35).

3. A lightning environment transformer impulse voltage test device according to claim 1, characterized in that: The blowing mechanism (32) also includes a servo motor (323) and a gear rod (324). The annular cavity shell (321) is also provided with a rotating hole (3212). The servo motor (323) is fixedly connected to the annular cavity shell (321). The servo motor (323) and its output end are fixedly connected to the gear rod (324). The gear rod (324) is rotatably connected to the rotating hole (3212). The core (322) is also provided with an annular tooth groove (3223). The gear rod (324) meshes with the tooth surface of the annular tooth groove (3223). The servo motor (323) is connected to the chassis (2) via an electrical signal.

4. A lightning environment transformer impulse voltage test device according to claim 2, characterized in that: The cutting mechanism (36) includes a base (361), an assembly frame (362), and a three-electrode ball gap (363). The base (361) is fixedly connected to the base (31) and the assembly frame (362). The three-electrode ball gap (363) is fixedly connected to the protection resistor (35) of the assembly frame (362).

5. The lightning environment transformer impulse voltage testing device according to claim 1, characterized in that: The impulse voltage generator (5) includes a charging resistor (51), a main capacitor (52), a wave front resistor (53) and a wave tail resistor (54). The charging resistor (51) is fixedly connected to the main capacitor (52), the wave front resistor (53), the wave tail resistor (54), and the base (1).

Images