Insulation performance testing device and method for encapsulating insulation material of dry-type air-core reactor

Abstract

The invention provides an insulating property testing device and method for a dry-type air-core reactor encapsulation insulating material. The device comprises a measuring electrode, a clamping mechanism and a position adjusting device, the measuring electrode is arranged at a test position of a to-be-tested encapsulation layer of the dry-type air-core reactor, the measuring electrode is connected with a current terminal of test equipment, and a wiring terminal of a winding at the to-be-tested encapsulation layer is connected with a voltage terminal of the test equipment; the clamping mechanism is connected with the measuring electrode, so that the measuring electrode is clamped and contacted with the test position of the encapsulation layer to be tested; and the position adjusting device is arranged on a star-shaped frame of the dry-type air-core reactor and is connected with the clamping mechanism so as to adjust the position of the measuring electrode. According to the invention, the insulation performance parameters of the encapsulation layer of the dry-type air-core reactor can be tested, the insulation performance of the insulation material of the encapsulation layer of the dry-type air-core reactor can be evaluated, the encapsulation layer to be tested at different positions can be tested, and different positions on the encapsulation layer to be tested can also be tested.

Description

Technical Field

[0001] This invention relates to the field of high-voltage power equipment technology, and more specifically, to a device and method for testing the insulation performance of the encapsulating insulation material of a dry-type air-core reactor. Background Technology

[0002] Dry-type air-core reactors employ a coreless, oil-free insulation design, consisting of multiple layers of aluminum or copper conductors wound in parallel. The conductors are wrapped with a thin film material to form inter-turn insulation, and the windings are further encapsulated with epoxy resin-impregnated fiberglass tape, forming a dense encapsulation layer that effectively isolates the conductors from the external environment. Each winding and its external insulation encapsulation layer constitute an encapsulation. Multiple encapsulated windings are connected in parallel or series to form the reactor's total inductance. Insulating supports are used to secure the encapsulations and increase mechanical strength. This structure offers advantages such as low loss, low noise, and maintenance-free operation, and is widely used in power system filtering, current limiting, and reactive power compensation. However, the insulation material of dry-type air-core reactors is susceptible to defects such as cracking, moisture absorption, and insulation aging due to factors such as thermal stress cycling, mismatched material expansion coefficients, and ultraviolet aging. These defects can ultimately lead to inter-turn short circuits, discharges, and fires in the dry-type air-core reactor equipment.

[0003] Currently, insulation performance testing of dry-type air-core reactors mainly focuses on the overall insulation and inter-turn insulation of the reactor. However, for the encapsulation insulation material, it is only possible to analyze whether there are cracks on its surface by visual inspection or image analysis, and it is impossible to test the encapsulation insulation performance parameters of the dry-type air-core reactor in operation. Summary of the Invention

[0004] In view of this, the present invention proposes an insulation performance testing device for the encapsulation insulation material of dry-type air-core reactors, aiming to solve the problem that existing technologies cannot test the encapsulation insulation performance parameters of dry-type air-core reactors. The present invention also proposes a method for testing the insulation performance using this device for the encapsulation insulation material of dry-type air-core reactors.

[0005] In one aspect, the present invention provides a device for testing the insulation performance of the encapsulating insulation material of a dry-type air-core reactor. The device includes: a measuring electrode, a clamping mechanism, and a position adjustment device. The measuring electrode is positioned at the test location of the encapsulating layer to be tested on the dry-type air-core reactor and is connected to the current terminal of a testing device. The winding terminal at the encapsulating layer to be tested is connected to the voltage terminal of the testing device. The clamping mechanism is connected to the measuring electrode to clamp and contact the measuring electrode with the test location of the encapsulating layer to be tested. The position adjustment device is positioned on the star-shaped frame of the dry-type air-core reactor and connected to the clamping mechanism to adjust the position of the clamping mechanism, thereby adjusting the position of the measuring electrode.

[0006] Furthermore, in the aforementioned insulation performance testing device for the encapsulating insulation material of a dry-type air-core reactor, the measuring electrode includes: an electrode holder made of insulating material, an electrode bladder made of flexible electrode material, and an electrode test line; wherein, a receiving groove is provided on one side of the electrode holder, with the opening of the receiving groove facing the test position of the encapsulating layer to be tested; the electrode bladder is placed in the receiving groove, and the electrode bladder has an inflation port to fill the electrode bladder with gas, thereby making the electrode bladder contact the test position of the encapsulating layer to be tested; one end of the electrode test line is connected to the electrode bladder, and the other end of the electrode test line is connected to the current terminal of the testing equipment.

[0007] Furthermore, in the above-mentioned insulation performance testing device for the encapsulating insulation material of dry-type air-core reactors, the clamping mechanism includes: a clamping rod and a pushing structure; wherein, the clamping rod is suspended above the encapsulating layer to be tested and connected to the position adjustment device, and the clamping rod has a through hole; the electrode holder is movably inserted through the through hole; the pushing structure is disposed on the clamping rod and is used to push the electrode holder to move towards the encapsulating layer to be tested so as to contact the encapsulating layer to be tested, and to fix the electrode holder to the clamping rod.

[0008] Furthermore, in the above-mentioned insulation performance testing device for the encapsulating insulation material of the dry-type hollow reactor, the pushing structure is a pushing nut; the outer wall of the clamping rod is provided with threads, and the pushing nut is screwed onto the clamping rod and abuts against the side of the electrode seat away from the encapsulating layer to be tested.

[0009] Furthermore, in the aforementioned insulation performance testing device for the encapsulating insulation material of the dry-type air-core reactor, there are two measuring electrodes, which are respectively disposed on the inner and outer encapsulating layers of the winding at the test position of the dry-type air-core reactor; the clamping rod has two through holes, and the electrode seats of the two measuring electrodes are correspondingly and movably inserted through the two through holes; there are two pushing structures, which correspond one-to-one with the two electrode seats, and each pushing structure is used to push the corresponding electrode seat to move to contact the encapsulating layer on the corresponding side, and to fix the electrode seat to the clamping rod.

[0010] Furthermore, in the aforementioned insulation performance testing device for the encapsulating insulation material of the dry-type air-core reactor, the position adjustment device includes: a circumferential adjustment mechanism, a lateral adjustment mechanism, and a vertical adjustment mechanism; wherein, the circumferential adjustment mechanism is located at the center of the star-shaped frame, the circumferential adjustment mechanism is connected to the lateral adjustment mechanism, the lateral adjustment mechanism is connected to the vertical adjustment mechanism, and the vertical adjustment mechanism is connected to the clamping mechanism; the circumferential adjustment mechanism is used to adjust the position of the clamping mechanism in the circumferential direction; the lateral adjustment mechanism is used to adjust the lateral position of the clamping mechanism; and the vertical adjustment mechanism is used to adjust the vertical position of the clamping mechanism.

[0011] Furthermore, in the above-mentioned insulation performance testing device for the encapsulating insulation material of dry-type air-core reactors, the circumferential adjustment mechanism includes: a base, a turntable, and a support rod; wherein, the bottom of the base is located at the center of the star-shaped frame; the turntable is rotatably located at the top of the base; the support rod is vertically connected to the turntable; and the lateral adjustment mechanism is located on the support rod.

[0012] Furthermore, in the above-mentioned insulation performance testing device for the encapsulating insulation material of the dry-type air-core reactor, the lateral adjustment mechanism includes: a lateral adjustment rod and a locking structure; wherein, the support rod has a first through hole in the radial direction; the lateral adjustment rod is movably inserted through the first through hole; the locking structure is provided on the lateral adjustment rod for locking the lateral adjustment rod after it has moved to the desired position; and the vertical adjustment mechanism is provided near the end of the lateral adjustment rod.

[0013] Furthermore, in the above-mentioned insulation performance testing device for the encapsulating insulation material of the dry-type air-core reactor, the vertical adjustment mechanism includes: a vertical adjustment rod and a locking structure; wherein, a second through hole is radially opened near the end of the horizontal adjustment rod; the vertical adjustment rod is movably inserted through the second through hole; the locking structure is provided on the vertical adjustment rod for locking the vertical adjustment rod after it has moved to the desired position; the clamping mechanism is connected to the end of the vertical adjustment rod.

[0014] In this invention, the measuring electrode is positioned at the test location of the encapsulation layer of the dry-type air-core reactor. A clamping mechanism clamps and contacts the measuring electrode with the test location of the encapsulation layer. A position adjustment device adjusts the position of the clamping mechanism to adjust the position of the measuring electrode. This allows for the testing of the insulation performance parameters of the encapsulation layer of the dry-type air-core reactor, thereby evaluating the insulation performance of the insulation material of the encapsulation layer and providing a basis for the operation and maintenance of the dry-type air-core reactor. This solves the problem that existing technologies cannot test the encapsulation insulation performance parameters of dry-type air-core reactors. Furthermore, this device allows for the adjustment of the clamping mechanism position according to testing requirements, enabling testing of the encapsulation layer at different locations and different locations on the encapsulation layer, thus expanding the testing range.

[0015] On the other hand, the present invention also proposes a method for testing the insulation performance of the encapsulating insulation material of any of the above-mentioned dry-type air-core reactors using an insulation performance testing device. The method includes the following steps: selecting the test location of the dry-type air-core reactor; visually inspecting the test location; setting the measuring electrode at the test location and connecting the measuring electrode to the current terminal of the testing equipment, connecting the winding terminal at the test location to the voltage terminal of the testing equipment, and testing the insulation performance parameters of the dry-type air-core reactor using the testing equipment; analyzing the test results and evaluating the insulation performance of the encapsulating insulation material of the dry-type air-core reactor.

[0016] In this invention, the test location of the dry-type air-core reactor is first selected. Then, the test location is visually inspected. Next, the measuring electrodes are set at the test location, and the insulation performance parameters of the dry-type air-core reactor are tested using testing equipment. Then, the test results are analyzed to evaluate the insulation performance of the encapsulation insulation material of the dry-type air-core reactor. In this way, the insulation performance of the encapsulation insulation material of the dry-type air-core reactor is effectively measured and the insulation status is assessed, providing a basis for the operation and maintenance of the dry-type air-core reactor. Attached Figure Description

[0017] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0018] Figure 1 A schematic diagram of the insulation performance testing device for the encapsulating insulation material of a dry-type air-core reactor provided in an embodiment of the present invention;

[0019] Figure 2 A top view of the clamping mechanism and base in the insulation performance testing device for the encapsulated insulation material of a dry-type hollow reactor provided in an embodiment of the present invention.

[0020] Figure 3 A flowchart illustrating the method for testing the insulation performance of the encapsulating insulating material of a dry-type air-core reactor provided in an embodiment of the present invention;

[0021] Figure 4 In the method for testing the insulation performance of the encapsulating insulation material of the dry-type air-core reactor provided in the embodiments of the present invention, the frequency domain dielectric spectrum of the encapsulating insulation material of the dry-type air-core reactor under different aging states is obtained. Detailed Implementation

[0022] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the disclosure to those skilled in the art. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0023] Device Example:

[0024] See Figure 1 and Figure 2 The figure shows a preferred structure of a testing device for the insulation performance of the encapsulated insulation material of a dry-type air-core reactor. As shown, the testing device for the insulation performance of the encapsulated insulation material of a dry-type air-core reactor includes: a measuring electrode 1, a clamping mechanism 2, and a position adjustment device 3. The measuring electrode 1 is positioned at the test location of the encapsulated layer 4 to be tested in the dry-type air-core reactor, and is connected to the current terminal of the testing equipment 7. The terminal 6 of the winding 5 at the encapsulated layer 4 to be tested is connected to the voltage terminal of the testing equipment 7.

[0025] It should be noted that in a dry-type air-core reactor, multiple layers of aluminum or copper wires are wound in parallel to form multiple windings 5. Each winding 5 is distributed in a circular ring shape, with a certain gap between adjacent windings 5. Each winding 5 is encapsulated by an insulating layer, typically epoxy-impregnated fiberglass, which is also circular in shape. Because the windings are circular, they have inner and outer sides. The insulating layer on the inner side of winding 5 is the inner encapsulation layer, and the insulating layer on the outer side is the outer encapsulation layer. The structure of the dry-type air-core reactor is an existing structure, and the specific structure can be found in existing technology, so it will not be described in detail here.

[0026] The clamping mechanism 2 is connected to the measuring electrode 1. The clamping mechanism 2 is used to clamp the measuring electrode 1 to the test position of the encapsulation layer 4 to be tested, so that the measuring electrode 1 and the encapsulation layer 4 to be tested are relatively fixed. Furthermore, the clamping mechanism 2 makes the measuring electrode 1 and the test position of the encapsulation layer 4 to be tested in close contact.

[0027] The position adjustment device 3 is installed on the star frame 8 of the dry-type air-core reactor, and is positioned above the star frame 8. The position adjustment device 3 is connected to the clamping mechanism 2, and is used to adjust the position of the clamping mechanism 2 to adjust the position of the measuring electrode 1. In this way, the test encapsulation layer 4 at different positions can be tested, and different positions within the test encapsulation layer 4 can also be tested.

[0028] Since there are multiple windings 5, and each winding 5 has two encapsulation layers (inner and outer), during testing, the test position is first selected, and the encapsulation layer corresponding to the test winding 5 is determined as the encapsulation layer 4 to be tested. Then, the test position on the encapsulation layer 4 is determined. The position of the clamping mechanism 2 is adjusted using the position adjustment device 3 according to the test position. Then, the clamping mechanism 2 is connected to the measuring electrode 1, and the measuring electrode 1 is clamped by the clamping mechanism 2 to ensure that the measuring electrode 1 corresponds to the test position of the encapsulation layer 4 to be tested. Then, the insulation performance of the encapsulation layer 4 to be tested is tested using the testing equipment 7. Specifically, the testing equipment 7 can test the insulation resistance, absorption ratio, dielectric loss factor, frequency domain dielectric spectrum, partial discharge, and other insulation performance parameters of the insulating material of the encapsulation layer 4 to be tested.

[0029] The test device 7 is also connected to the control device 9. The test device 7 sends the test results to the control device 9. The control device 9 processes and analyzes the test results to evaluate the insulation performance of the test encapsulation layer 4 of the dry-type air-core reactor. The control device 9 also stores the test results and analysis results.

[0030] In practice, the testing equipment 7 can be an insulation resistance tester, a dielectric loss factor tester, a frequency domain dielectric spectrometer, a partial discharge test system, etc., to test parameters such as insulation resistance, absorption ratio, dielectric loss factor, frequency domain dielectric spectrum, and partial discharge quantity of the encapsulation layer insulation material.

[0031] As can be seen, in this embodiment, the measuring electrode 1 is positioned at the test location of the encapsulation layer 4 of the dry-type air-core reactor. The clamping mechanism 2 clamps and contacts the measuring electrode 1 with the test location of the encapsulation layer 4. The position adjustment device 3 adjusts the position of the clamping mechanism 2 to adjust the position of the measuring electrode 1. In this way, the insulation performance parameters of the encapsulation layer of the dry-type air-core reactor can be tested, thereby evaluating the insulation performance of the insulation material of the encapsulation layer of the dry-type air-core reactor and providing a basis for the operation and maintenance of the dry-type air-core reactor. This solves the problem that the existing technology cannot test the encapsulation insulation performance parameters of the dry-type air-core reactor. Furthermore, the device can adjust the position of the clamping mechanism 2 according to the test requirements through the position adjustment device 3. In this way, the encapsulation layer 4 at different locations can be tested, and different locations on the encapsulation layer 4 can also be tested, thus expanding the test range.

[0032] See Figure 1 and Figure 2In the above embodiment, the measuring electrode 1 includes: an electrode holder 11, an electrode pouch 12, and electrode test leads 13. The electrode holder 11 is made of insulating material and can be a solid structure. A receiving groove is formed on one side of the electrode holder 11, with the opening of the receiving groove facing the test position of the encapsulation layer 4 to be tested. Specifically, the electrode holder 11 can be arc-shaped or rectangular; this embodiment does not impose any limitations on the shape of the electrode holder 11.

[0033] The electrode bladder 12 is made of a flexible electrode material, the flexibility of which can be determined according to actual conditions, and this embodiment does not impose any limitations on it. The electrode bladder 12 is placed in the receiving groove, and the electrode bladder 12 has an inflation port, which is connected to an air pump 14. The air pump 14 fills the electrode bladder 12 with gas through the inflation port, so that the inside of the electrode bladder 12 is filled with gas, making the electrode bladder 12 contact the test position of the encapsulation layer 4 to be tested, that is, the surface of the electrode bladder 12 and the test position of the encapsulation layer 4 to be tested are in close contact. Specifically, the electrode base 11 has an opening corresponding to the inflation port, and one end of the inflation port is connected to a gas pipe. The gas pipe passes through the opening of the electrode base 11, and the other end of the gas pipe is connected to the air pump 14, so that gas is filled into the electrode bladder 12 through the air pump 14 and the gas pipe.

[0034] One end of the electrode test line 13 is connected to the electrode sac 12. After the electrode test line 13 passes through the electrode holder 11, the other end of the electrode test line 13 is connected to the current terminal of the test device 7.

[0035] Since the electrode capsule 12 is filled with gas, when the electrode base 11 is rectangular, although the encapsulation layer is arc-shaped and there is a gap between the electrode base 11 and the encapsulation layer, making it impossible to fit tightly, the electrode capsule 12 can fit tightly with the encapsulation layer, thus achieving contact between the measuring electrode 1 and the test position of the encapsulation layer 4 to be tested, and thus enabling testing.

[0036] As can be seen, in this embodiment, the measuring electrode 1 has a simple structure and is easy to implement.

[0037] See Figure 1 In the above embodiment, the clamping mechanism 2 includes a clamping rod 21 and a pushing structure. The clamping rod 21 is suspended above the packaging layer 4 to be tested. Specifically, the clamping rod 21 is made of insulating material and is positioned above the star-shaped frame 8. The clamping rod 21 is connected to the position adjustment device 3 and has a through hole.

[0038] The electrode holder 11 is movably inserted through the through hole. Specifically, the electrode holder 11 is positioned below the clamping rod 21 and is perpendicular to the clamping rod 21. The electrode holder 11 is inserted through the through hole from below the clamping rod 21.

[0039] A pushing structure is disposed on the clamping rod 21, and is located at the end of the clamping rod 21 and on one side of the through hole. The pushing structure is used to push the electrode holder 11 towards the encapsulation layer 4 to be tested, so that the electrode holder 11 contacts the encapsulation layer 4 to be tested, and fixes the electrode holder 11 to the clamping rod 21, thereby fixing the position of the electrode holder 11. The pushing structure can be a bolt, or an electric, pneumatic, hydraulic, or other structure, as long as it can push the electrode holder 11 towards the encapsulation layer 4 to be tested so that the electrode holder 11 contacts and fixes the encapsulation layer 4 to be tested. This embodiment does not impose any restrictions on this.

[0040] In a specific implementation, a cylindrical mounting rod can be provided on the top of the electrode holder 11. The mounting rod is movably inserted through the through hole, the diameter of which is larger than the outer diameter of the mounting rod, so that the mounting rod can move within the through hole. The pushing structure pushes the mounting rod to move, and the mounting rod drives the electrode holder 11 to move towards the encapsulation layer 4 to be tested.

[0041] Preferably, the pushing structure is a pushing nut 22, which is positioned on one side of the through hole and corresponds to the end of the clamping rod 21. The outer wall of the clamping rod 21 is threaded, and the pushing nut 22 is screwed onto the clamping rod 21. The pushing nut 22 abuts against the side of the electrode holder 11 away from the encapsulation layer 4 to be tested. By twisting the pushing nut 22 and the clamping rod 21, the pushing nut 22 moves towards the center of the clamping rod 21, and the movement of the pushing nut 22 pushes the electrode holder 11 towards the encapsulation layer 4 to be tested.

[0042] As can be seen, in this embodiment, the electrode holder 11 is movably inserted through the through hole on the clamping rod 21. The pushing structure pushes the electrode holder 11 to move towards the encapsulation layer 4 to be tested so as to contact the encapsulation layer 4 to be tested, and makes the electrode holder 11 and the encapsulation layer 4 to be tested relatively fixed, so as to avoid the electrode holder 11 from moving during the test. In addition, the clamping mechanism 2 has a simple structure and is easy to implement.

[0043] Preferably, there are two measuring electrodes 1, and the two measuring electrodes 1 are respectively disposed on the inner and outer encapsulation layers of the winding 5 of the dry-type air-core reactor at the test position. Furthermore, the two measuring electrodes 1 are symmetrically arranged and both perform the same function.

[0044] In practice, depending on the number of channels in the testing equipment 7, the measuring electrode 1 can be set only at the test position of the inner encapsulation layer of the winding 5; or, the measuring electrode 1 can be set only at the test position of the outer encapsulation layer of the winding 5; or, the measuring electrode 1 can be set at both the inner and outer encapsulation layers of the winding 5 at the test position. That is to say, depending on the number of channels in the testing equipment 7, the insulation performance of a single-sided encapsulation layer can be tested, or the insulation performance of the encapsulation layers on both the inner and outer sides of the winding 5 can be tested simultaneously.

[0045] The clamping rod 21 has two through holes, and the electrode seats 11 of the two measuring electrodes 1 correspond one-to-one with the two through holes. The electrode seats 11 of each measuring electrode 1 can be movably inserted into the corresponding through hole.

[0046] There are two pushing structures, and each pushing structure corresponds one-to-one with one of the two electrode seats 11. Each pushing structure is used to push the corresponding electrode seat 11 to move so that the corresponding electrode seat 11 contacts the encapsulation layer on the corresponding side and fixes the electrode seat 11 to the clamping rod 21. In this way, the inner and / or outer sides of the test position of the encapsulation layer 4 under test can be tested according to actual needs, which meets the testing requirements and enables better analysis of the insulation performance of the encapsulation insulation material of the dry-type air-core reactor.

[0047] In specific implementation, even if the test equipment 7 has only one channel, the measuring electrode 1 can be set on both the inner and outer encapsulation layers of the winding 5 at the test position. However, only the electrode test point of one of the measuring electrodes 1 is connected to the current terminal of the test equipment 7. In this way, the two pushing structures simultaneously push the two electrode seats 11 to the winding from both sides, which not only ensures that the electrode seat 11 is in contact with the encapsulation layer on the corresponding side, but also ensures the fixation between the two measuring electrodes 1 and the encapsulation layer, thus achieving the clamping and positioning of the measuring electrode 1.

[0048] See Figure 1 In the above embodiments, the position adjustment device 3 includes: a circumferential adjustment mechanism 31, a horizontal adjustment mechanism 32, and a vertical adjustment mechanism 33. The circumferential adjustment mechanism 31 is located at the center of the star-shaped frame 8, and is connected to the horizontal adjustment mechanism 32. The horizontal adjustment mechanism 32 is connected to the vertical adjustment mechanism 33, and the vertical adjustment mechanism 33 is connected to the clamping mechanism 2.

[0049] The circumferential adjustment mechanism 31 is used to adjust the position of the clamping mechanism 2 in the circumferential direction, that is, to adjust the position of the measuring electrode 1 in the circumferential direction. Since the encapsulation layer is annular, the circumferential adjustment mechanism 31 can adjust the position of the measuring electrode 1 to test the same encapsulation layer at different positions in the circumferential direction.

[0050] Lateral adjustment mechanism 32 is used to adjust the clamping mechanism 2 in the lateral direction. Figure 1 The position (shown from left to right) of the measuring electrode 1, i.e., adjusting the lateral position of the measuring electrode 1, enables the testing of the insulation performance of the encapsulation layer at different winding locations.

[0051] Vertical adjustment mechanism 33 is used to adjust the clamping mechanism 2 in the vertical direction. Figure 1 The position (shown from top to bottom) indicates that by adjusting the position of the measuring electrode 1 in the vertical direction, the insulation performance of the encapsulation layer at different vertical positions can be tested.

[0052] The circumferential adjustment mechanism 31 includes a base 311, a turntable 312, and a support rod 313. The bottom of the base 311 is located at the center of the star-shaped frame 8, and the turntable 312 is rotatably mounted on the top of the base 311. Specifically, the top of the base 311 has a groove, and the bottom of the groove has a recessed portion. The lateral dimension of the recessed portion is larger than the lateral dimension of the groove, thus forming an inverted "T" shape. The turntable 312 is rotatably placed in the recessed portion. The lateral dimension of the turntable 312 is smaller than the lateral dimension of the recessed portion but larger than the lateral dimension of the groove. Therefore, the turntable 312 is contained within the recessed portion but is blocked by the groove, allowing it to rotate only within the recessed portion and preventing it from dislodging from it.

[0053] The support rod 313 is vertically connected to the turntable 312, so the support rod 313 and the turntable 312 form an inverted "T" shaped structure. The support rod 313 is rotatably inserted into the groove, and the support rod 313 extends away from the base 311.

[0054] Preferably, the base 311 and the star-shaped frame 8 are detachably connected, such as by clamps, binding, etc. This embodiment does not impose any restrictions on the implementation of the detachable connection.

[0055] The lateral adjustment mechanism 32 is mounted on the support rod 313. Specifically, the lateral adjustment mechanism 32 is located at the end of the support rod 313 away from the turntable 312. In this way, by rotating the turntable 312, the turntable 312 rotates within the recess, realizing free rotation of the turntable 312 in the circumferential direction. The rotation of the turntable 312 drives the lateral adjustment mechanism 32, the vertical adjustment mechanism 33, the clamping mechanism 2, and the measuring electrode 1 to rotate together via the support rod 313.

[0056] The lateral adjustment mechanism 32 includes a lateral adjustment rod 321 and a locking structure. The support rod 313 has a first through hole in the radial direction. Since the support rod 313 is perpendicular to the turntable 312, the radial direction of the support rod 313 is... Figure 1 The direction shown from left to right, i.e., the radial direction of the support rod 313, is consistent with the transverse direction of the device.

[0057] The lateral adjustment rod 321 is movably inserted through the first through hole. Specifically, the diameter of the first through hole is slightly larger than that of the lateral adjustment rod 321 so that the lateral adjustment rod 321 can move laterally.

[0058] A locking structure is provided on the lateral adjustment rod 321, which is used to lock the lateral adjustment rod 321 after it has been moved to the desired position.

[0059] In specific implementation, the locking structure can be implemented in various ways. This embodiment does not impose any limitations on this implementation. Only one implementation is described in this embodiment, but it is not limited to this implementation: The locking structure includes two locking nuts 322. The outer wall of the transverse adjusting rod 321 is provided with threads. Both locking nuts 322 are screwed onto the transverse adjusting rod 321, and the two locking nuts 322 are respectively placed on both sides of the support rod 313. After the transverse adjusting rod 321 is moved to the desired position, the two locking nuts 322 are turned until they are in contact with the support rod 313. Then, the two locking nuts 322 are located on the left and right sides of the support rod 313 and are in close contact with the support rod 313, thereby locking the position of the transverse adjusting rod 321.

[0060] The vertical adjustment mechanism 33 is located near the end of the horizontal adjustment rod 321. Thus, moving the horizontal adjustment rod 321 causes the vertical adjustment mechanism 33, the clamping mechanism 2, and the measuring electrode 1 to move laterally together.

[0061] The vertical adjustment mechanism 33 includes a vertical adjustment rod 331 and a locking structure. The horizontal adjustment rod 321 has a second through hole radially near its end. Specifically, since the horizontal adjustment rod 321 passes through the first through hole radially in the support rod 313, the horizontal adjustment rod 321 is perpendicular to the support rod 313, and the radial direction of the horizontal adjustment rod 321 is... Figure 1 The direction shown is from top to bottom, and the radial direction of the lateral adjustment rod 321 is consistent with the vertical direction of the device.

[0062] The vertical adjustment rod 331 is movably inserted through the second through hole. Specifically, the diameter of the second through hole is slightly larger than that of the vertical adjustment rod 331 so that the vertical adjustment rod 331 can move vertically.

[0063] A locking structure is provided on the vertical adjusting rod 331. The locking structure is used to lock the vertical adjusting rod 331 after it has been moved to the desired position.

[0064] In specific implementation, the locking structure can be implemented in various ways. This embodiment does not impose any limitations on this implementation. Only one implementation is described in this embodiment, but it is not limited to this implementation: The locking structure includes a locking nut 332. The outer wall of the vertical adjusting rod 331 is threaded. The locking nut 332 is screwed onto the vertical adjusting rod 331 and is positioned above the horizontal adjusting rod 321. After the vertical adjusting rod 331 is moved to the desired position, the locking nut 332 is turned until it contacts the horizontal adjusting rod 321. At this time, the locking nut 332 is located above the horizontal adjusting rod 321 and in close contact with it. The locking nut 332 then limits the vertical adjusting rod 331, locking the vertical adjusting rod 331 and the horizontal adjusting rod 321 together.

[0065] Preferably, there are two locking nuts 332, both of which are screwed onto the vertical adjusting rod 331. The two locking nuts 332 are positioned above and below the horizontal adjusting rod 321, respectively. After the vertical adjusting rod 331 is moved to the desired position, the two locking nuts 332 are screwed until they contact the horizontal adjusting rod 321. At this point, the two locking nuts 332 are positioned above and below the horizontal adjusting rod 321 and are in close contact with it, thus limiting the vertical adjusting rod 331 and locking it to the horizontal adjusting rod 321.

[0066] The clamping mechanism 2 is connected to the end of the vertical adjusting rod 331. Specifically, the clamping rod 21 in the clamping mechanism 2 is vertically connected to the end of the vertical adjusting rod 331. Then the clamping rod 21 is parallel to the horizontal adjusting rod 321, and the horizontal adjusting rod 321 is positioned above the clamping rod 21.

[0067] During adjustment, first select the encapsulation layer 4 to be tested, loosen the two locking nuts 322, and move the horizontal adjusting rod 321 so that the vertical adjusting rod 331, clamping mechanism 2, and measuring electrode 1 correspond to the encapsulation layer 4 to be tested. Then, tighten the two locking nuts 322 to both sides of the support rod 313 and make them contact the support rod 313. At this time, the horizontal adjusting rod 321 is positioned. Then, loosen the locking nut 332, and according to the test position of the encapsulation layer 4, move the vertical adjusting rod 331 so that the clamping mechanism 2 and measuring electrode 1 correspond to the test position of the encapsulation layer 4 to be tested. Then, tighten the locking nut 332 to the top of the horizontal adjusting rod 321 and make it contact the horizontal adjusting rod 321. At this time, the vertical adjusting rod 331 is positioned. At this time, the measuring electrode 1 corresponds to the test position of the encapsulation layer 4 to be tested. Then, the push nut 22 is turned to push the electrode seat 11 to move towards the encapsulation layer 4 to be tested, so that the electrode seat 11 contacts the test position of the encapsulation layer 4 to be tested, and the electrode seat 11 and the test position of the encapsulation layer 4 to be tested are relatively fixed.

[0068] After adjusting the position, gas is filled into the electrode bladder 12 so that the electrode bladder 12 is in close contact with the surface of the test position of the encapsulation layer 4 under test. The voltage terminal of the test device 7 is connected to the terminal 6 of the winding 5 at the encapsulation layer 4 under test, and the current terminal of the test device 7 is connected to the electrode test line 13 of the electrode bladder 12. The test device 7 applies voltage through the terminal 6 at the encapsulation layer 4 under test, generating a capacitance effect between the dry-type air-core reactor encapsulation winding 5 and the inner flexible electrode bladder 12. The insulation leakage current of the encapsulation insulation material within the area directly opposite the flexible electrode bladder 12 enters the test device 7 through the electrode test line 13. The test device 7 measures the insulation performance parameters of the insulation material of the encapsulation layer 4 under test.

[0069] After testing the test position of the encapsulation layer 4, if it is necessary to measure other positions of the encapsulation layer 4, release the positioning of the electrode holder 11 by the push nut 22. The electrode holder 11 can be disassembled according to actual needs. Rotate the support rod 313. The rotation of the support rod 313 in the recessed part through the rotation of the turntable 312 drives the rotation of the horizontal adjustment rod 321, the vertical adjustment rod 331 and the clamping rod 21. After rotating to the required measurement position, insert the electrode holder 11 into the through hole of the clamping rod 21 and push and position the electrode holder 11 by the push nut 22. Then, fill the electrode bladder 12 with gas and test the test position of the encapsulation layer 4 again using the testing equipment 7.

[0070] It should be noted that since the clamping mechanism 2, the horizontal adjustment mechanism 32 and the vertical adjustment mechanism 33 position the measuring electrode 1, there is no need to position the turntable 312. Of course, a positioning structure can also be set at the turntable 312. After the turntable 312 rotates to the desired position, the positioning structure positions the turntable 312 to prevent it from rotating. The positioning structure can refer to the existing structure.

[0071] This device utilizes an electrode capsule 12 made of flexible electrode material. The electrode capsule 12 is placed in the receiving groove of the electrode seat 11. The electrode seat 11 is clamped by the clamping mechanism 2. Then, the electrode capsule 12 is inflated by the air pump 14 and filled with air, thus achieving a tight fit between the electrode capsule 12 made of flexible electrode material and the surface of the curved encapsulation layer.

[0072] This device applies voltage to the terminals of the encapsulated winding 5 and utilizes the capacitance effect between the encapsulated winding and the flexible measuring electrode 1 outside the encapsulation layer to measure different insulation performance parameters using different insulation performance testing equipment. Furthermore, by adjusting the position of the measuring electrode 1 in the lateral, vertical, and circumferential directions, it is possible to test the insulation material performance of the dry-type air-core reactor at different locations within the encapsulation layer and at different positions on the encapsulation layer.

[0073] Based on the measurement results of test equipment 7, the measurement results are processed and analyzed to obtain insulation performance parameters and their variation laws, thereby realizing the evaluation of the insulation status of the encapsulation insulation material of dry-type air-core reactor.

[0074] In summary, in this embodiment, the measuring electrode 1 is positioned at the test location of the encapsulation layer 4 of the dry-type air-core reactor. The clamping mechanism 2 clamps and contacts the measuring electrode 1 with the test location of the encapsulation layer 4. The position adjustment device 3 adjusts the position of the clamping mechanism 2 to adjust the position of the measuring electrode 1. This allows for the testing of the insulation performance parameters of the encapsulation layer of the dry-type air-core reactor, thereby evaluating the insulation performance of the insulation material of the encapsulation layer. This achieves effective measurement and insulation status assessment of the insulation performance of the encapsulation insulation material of the dry-type air-core reactor, providing a basis for the operation and maintenance of the dry-type air-core reactor. Furthermore, the device can adjust the position of the clamping mechanism 2 according to testing requirements via the position adjustment device 3, enabling testing of the encapsulation layer 4 at different locations and at different locations on the encapsulation layer 4, thus expanding the testing range.

[0075] Method Implementation Examples:

[0076] This embodiment also proposes a method for testing the insulation performance of any of the above-mentioned dry-type air-core reactor encapsulation insulation materials using an insulation performance testing device. (See [link to relevant documentation]). Figure 3 The method for testing insulation performance includes the following steps:

[0077] Step S1: Select the test location for the dry-type air-core reactor.

[0078] Specifically, the test locations for the insulation performance of the dry-type air-core reactor are selected. These test locations can be certain test locations or all encapsulation layers, that is, all encapsulation layers of the dry-type air-core reactor are tested.

[0079] Step S2: Perform a visual inspection of the test location.

[0080] Step S3: Set the measuring electrode at the test position and connect the measuring electrode to the current terminal of the test equipment. Connect the winding terminal at the test position to the voltage terminal of the test equipment. The test equipment performs insulation performance parameter testing on the dry-type air-core reactor.

[0081] Specifically, see Figure 1 and Figure 2The measuring electrode 1 includes an electrode holder 11, an electrode bladder 12, and an electrode test lead 13. The electrode holder 11 is made of insulating material and can be a solid structure. A receiving groove is formed on one side of the electrode holder 11, with the opening of the receiving groove facing the test position of the encapsulation layer 4 to be tested. The electrode bladder 12 is made of flexible electrode material and is placed within the receiving groove. The electrode bladder 12 has an inflation port, through which gas is injected, filling the electrode bladder 12 and ensuring a tight fit between the electrode bladder 12 and the surface of the test position of the encapsulation layer 4. One end of the electrode test lead 13 is connected to the electrode bladder 12, and after passing through the electrode holder 11, the other end of the electrode test lead 13 is connected to the current terminal of the testing device 7.

[0082] According to the test position, the position of the clamping mechanism 2 is adjusted using the position adjustment device 3 so that the measuring electrode 1 corresponds to the test position. The position adjustment device 3 includes a circumferential adjustment mechanism 31, a lateral adjustment mechanism 32, and a vertical adjustment mechanism 33. The circumferential adjustment mechanism 31 is located at the center of the star-shaped frame 8, and is connected to the lateral adjustment mechanism 32. The lateral adjustment mechanism 32 is connected to the vertical adjustment mechanism 33, and the vertical adjustment mechanism 33 is connected to the clamping mechanism 2. Specifically, the structure of the position adjustment device 3 and the specific implementation process of the clamping mechanism 2 are described above, and will not be repeated here.

[0083] When adjusting the position of the measuring electrode 1, the turntable 312 is rotated, and the horizontal adjusting rod 321 and the vertical adjusting rod 331 are moved so that the measuring electrode 1 corresponds to the test position. Then, the clamping mechanism 2 fixes the electrode seat 11 and makes the electrode seat 11 contact the test position of the encapsulation layer. Then, gas is filled into the electrode bladder 12 so that the electrode bladder 12 is in close contact with the surface of the test position of the encapsulation layer. The voltage terminal of the test device 7 is connected to the wiring terminal 6 of the winding 5 at the encapsulation layer, and the current terminal of the test device 7 is connected to the electrode test line 13 of the electrode bladder 12. By applying voltage through the test device 7, the test device 7 measures the insulation performance parameters of the insulating material of the encapsulation layer to be tested.

[0084] In practice, the testing equipment 7 can be selected from equipment such as an insulation resistance tester, a dielectric loss factor tester, a frequency domain dielectric spectrometer, and a partial discharge testing system, so as to test parameters such as insulation resistance, absorption ratio, dielectric loss factor, frequency domain dielectric spectrum, and partial discharge quantity of the encapsulated insulating material.

[0085] In practice, depending on the number of channels in the testing equipment 7, the measuring electrode 1 can be set only at the test position of the inner encapsulation layer of the winding 5, in which case only the electrode bladder 12 in the measuring electrode 1 of the inner encapsulation layer is inflated; or, the measuring electrode 1 can be set only at the test position of the outer encapsulation layer of the winding 5, in which case only the electrode bladder 12 in the measuring electrode 1 of the outer encapsulation layer is inflated; or, the measuring electrode 1 can be set at both the inner and outer encapsulation layers of the winding 5 at the test position, in which case both electrode bladders 12 in the measuring electrode 1 of the inner and outer encapsulation layers are inflated simultaneously. In other words, depending on the number of channels in the testing equipment 7, the insulation performance of a single-sided encapsulation layer can be tested, or the insulation performance of the encapsulation layers on both the inner and outer sides of the winding can be tested simultaneously.

[0086] Correspondingly, the voltage terminal of the test device 7 is connected to the wiring terminal 6 of the encapsulation layer winding 5. When the measuring electrode 1 is provided in the inner encapsulation layer, the current terminal of the test device 7 is connected to the electrode test line 13 of the measuring electrode 1 in the inner encapsulation layer. When the measuring electrode 1 is provided in the outer encapsulation layer, the current terminal of the test device 7 is connected to the electrode test line 13 of the measuring electrode 1 in the outer encapsulation layer. When the measuring electrode 1 is provided in both the inner and outer encapsulation layers, the current terminal of the test device 7 is connected to the electrode test lines 13 of both measuring electrodes 1.

[0087] Step S4: Analyze the test results and evaluate the insulation performance of the insulation material of the encapsulation layer of the dry-type air-core reactor.

[0088] Specifically, see Figure 1 The test device 7 is connected to the control device 9. The test device 7 sends the test results to the control device 9. The control device 9 processes and analyzes the test results to evaluate the insulation performance of the encapsulation insulation material of the dry-type air-core reactor.

[0089] When evaluating the insulation performance of the encapsulation insulation material of a dry-type air-core reactor, the evaluation method can be determined according to the actual situation. This embodiment does not impose any restrictions on this. This embodiment only introduces some evaluation methods, but is not limited to the following evaluation methods:

[0090] First, select a reference system: use the previous measurement result or the measurement result under good insulation conditions as the reference result.

[0091] Insulation moisture assessment method: Insulation resistance is lower than the limit or significantly lower than the reference result; absorption ratio is higher than 1.5 or significantly higher than the reference result; dielectric loss factor is higher than the limit or significantly increased compared to the reference result; frequency domain dielectric spectrum curve is significantly higher than the reference result in the frequency band below 1Hz.

[0092] Insulation aging assessment method: The dielectric loss factor increases significantly, and the frequency domain dielectric spectrum curve is significantly higher than the reference result in the frequency band below 1 Hz.

[0093] Insulation crack assessment method: External cracks can be detected by visual inspection. Internal invisible cracks are manifested by a significant increase in dielectric loss factor, a decrease in partial discharge initiation voltage, and an increase in partial discharge.

[0094] This embodiment uses the insulation performance test of a 35kV dry-type parallel reactor during aging testing as an example to introduce the test method: The dry-type air-core reactor to be tested is placed in a high-temperature and high-humidity test chamber to conduct a damp heat aging test. During the test, an insulation performance testing device for the insulation material of the dry-type air-core reactor is used to test the outermost insulation material of the outermost encapsulation layer of the dry-type air-core reactor to be tested, with a measurement area of ​​0.2m². 2 The insulation test equipment was an IDAX300 frequency domain dielectric spectrum analyzer, with a measurement voltage of 140V and a measurement frequency range of 5mHz to 8kHz. Before conducting the high-temperature and high-humidity aging test, the dielectric loss factor of the encapsulation material as a function of frequency (dielectric loss factor-frequency curve) was measured at room temperature as a reference. A damp heat aging test was conducted on the dry-type air-core reactor under test at 120℃ and 100% humidity for 5 hours. The test was then stopped, and the dry-type air-core reactor was allowed to cool back to room temperature. The dielectric loss-frequency curve of the encapsulation material was measured using the same method. After the test, the damp heat aging test was continued. The above operation was repeated after 96 hours, 168 hours, and 240 hours of cumulative testing to obtain the changes in the insulation performance of the dry-type air-core reactor under different aging conditions. (See [reference needed]). Figure 4 It can be seen that as the aging time increases, the dielectric loss factor of the insulation material of the dry-type air-core reactor under the test increases in the measured frequency range under the same environmental conditions, and the increase is more obvious in the frequency range below 1Hz.

[0095] As can be seen, in this embodiment, the test location of the dry-type air-core reactor is first selected, then the test location is visually inspected, and then the measuring electrodes are set at the test location. The insulation performance parameters of the dry-type air-core reactor are tested using the testing equipment. Then the test results of the testing equipment are analyzed to evaluate the insulation performance of the insulation material of the encapsulation layer of the dry-type air-core reactor. In this way, the insulation performance of the insulation material of the encapsulation layer of the dry-type air-core reactor is effectively measured and the insulation status is assessed, providing a basis for the operation and maintenance of the dry-type air-core reactor.

[0096] It should be noted that the principle of the insulation performance testing device and method for the encapsulated insulation material of the dry-type air-core reactor in this invention is the same, and the relevant parts can be referred to each other.

[0097] It should be noted that in the description of this invention, the terms "upper", "lower", "left", "right", "inner", "outer", etc., which indicate the direction or positional relationship, are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and is not intended to indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this invention.

[0098] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0099] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A device for testing the insulation performance of the encapsulating insulating material of a dry-type air-core reactor, characterized in that, include: Measuring electrode (1), clamping mechanism (2), and position adjustment device (3); wherein, The measuring electrode (1) is used to be set at the test position of the test encapsulation layer (4) of the dry air reactor, and the measuring electrode (1) is used to be connected to the current terminal of the test equipment (7), and the wiring terminal (6) of the winding at the test encapsulation layer (4) is connected to the voltage terminal of the test equipment (7); The clamping mechanism (2) is connected to the measuring electrode (1) to clamp and contact the measuring electrode (1) with the test position of the encapsulation layer (4) to be tested; The position adjustment device (3) is set on the star frame (8) of the dry air reactor and connected to the clamping mechanism (2) to adjust the position of the clamping mechanism (2) so as to adjust the position of the measuring electrode (1).

2. The insulation performance testing device for the encapsulating insulation material of a dry-type air-core reactor according to claim 1, characterized in that, The measuring electrode (1) includes: an electrode holder (11) made of insulating material, an electrode capsule (12) made of flexible electrode material, and electrode test lines (13); wherein, The electrode holder (11) has a receiving groove on one side, and the opening of the receiving groove faces the test position of the encapsulation layer (4) to be tested. The electrode capsule (12) is placed in the receiving groove. The electrode capsule (12) has an inflation port to fill the electrode capsule (12) with gas, so that the electrode capsule (12) comes into contact with the test position of the encapsulation layer (4) to be tested. One end of the electrode test line (13) is connected to the electrode capsule (12), and the other end of the electrode test line (13) is connected to the current terminal of the test device (7).

3. The insulation performance testing device for the encapsulating insulation material of a dry-type air-core reactor according to claim 2, characterized in that, The clamping mechanism (2) includes: a clamping rod (21) and a pushing structure; wherein, The clamping rod (21) is suspended above the packaging layer (4) to be tested and connected to the position adjustment device (3). The clamping rod (21) has a through hole. The electrode holder (11) is movably inserted through the through hole; The pushing structure is disposed on the clamping rod (21) and is used to push the electrode seat (11) to move toward the encapsulation layer (4) to be tested so as to contact the encapsulation layer (4) to be tested, and to fix the electrode seat (11) to the clamping rod (21).

4. The insulation performance testing device for the encapsulating insulation material of a dry-type air-core reactor according to claim 3, characterized in that, The pushing structure is a pushing nut (22); The outer wall of the clamping rod (21) is threaded, and the push nut (22) is screwed to the clamping rod (21) and abuts against the side of the electrode seat (11) away from the test encapsulation layer (4).

5. The insulation performance testing device for the encapsulating insulation material of a dry-type air-core reactor according to claim 3 or 4, characterized in that, The measuring electrodes (1) are two, and are respectively located in the inner and outer encapsulation layers of the winding (5) of the dry air reactor at the test position; The clamping rod (21) has two through holes, and the electrode seats (11) of the two measuring electrodes (1) are movably inserted through the two through holes in a one-to-one correspondence; There are two pushing structures, each corresponding to one of the two electrode seats (11). Each pushing structure is used to push the corresponding electrode seat (11) to move to contact the encapsulation layer on the corresponding side and fix the electrode seat (11) to the clamping rod (21).

6. The insulation performance testing device for the encapsulating insulation material of a dry-type air-core reactor according to claim 1, characterized in that, The position adjustment device (3) includes: a circumferential adjustment mechanism (31), a lateral adjustment mechanism (32), and a vertical adjustment mechanism (33); wherein, The circumferential adjustment mechanism (31) is located at the center of the star-shaped frame (8). The circumferential adjustment mechanism (31) is connected to the horizontal adjustment mechanism (32). The horizontal adjustment mechanism (32) is connected to the vertical adjustment mechanism (33). The vertical adjustment mechanism (33) is connected to the clamping mechanism (2). The circumferential adjustment mechanism (31) is used to adjust the position of the clamping mechanism (2) in the circumferential direction; The lateral adjustment mechanism (32) is used to adjust the lateral position of the clamping mechanism (2); The vertical adjustment mechanism (33) is used to adjust the vertical position of the clamping mechanism (2).

7. The insulation performance testing device for the encapsulating insulation material of a dry-type air-core reactor according to claim 6, characterized in that, The circumferential adjustment mechanism (31) includes: a base (311), a turntable (312), and a support rod (313); wherein, The bottom of the base (311) is located at the center of the star-shaped frame (8); The turntable (312) is rotatably mounted on the top of the base (311); The support rod (313) is perpendicularly connected to the turntable (312); The lateral adjustment mechanism (32) is disposed on the support rod (313).

8. The insulation performance testing device for the encapsulating insulation material of a dry-type air-core reactor according to claim 7, characterized in that, The lateral adjustment mechanism (32) includes: a lateral adjustment rod (321) and a locking structure; wherein, The support rod (313) has a first through hole in the radial direction; The lateral adjustment rod (321) is movably inserted through the first through hole; The locking structure is provided on the lateral adjusting rod (321) and is used to lock the lateral adjusting rod (321) after it has moved to the desired position; The vertical adjustment mechanism (33) is located near the end of the horizontal adjustment rod (321).

9. The insulation performance testing device for the encapsulating insulation material of a dry-type air-core reactor according to claim 8, characterized in that, The vertical adjustment mechanism (33) includes: a vertical adjustment rod (331) and a locking structure; wherein, The lateral adjusting rod (321) has a second through hole radially opened near its end; The vertical adjustment rod (331) is movably inserted through the second through hole; The locking structure is provided on the vertical adjusting rod (331) and is used to lock the vertical adjusting rod (331) after it has been moved to the desired position; The clamping mechanism (2) is connected to the end of the vertical adjusting rod (331).

10. A method for testing the insulation performance of a dry-type air-core reactor encapsulating insulation material using an insulation performance testing device as described in any one of claims 1 to 9, characterized in that, Includes the following steps: Select the test location for the dry-type air-core reactor; Perform a visual inspection on the test location; The measuring electrode is placed at the test position and connected to the current terminal of the test equipment. The winding terminal at the test position is connected to the voltage terminal of the test equipment. The test equipment performs insulation performance parameter testing on the dry-type air-core reactor. The test results were analyzed to evaluate the insulation performance of the insulation material of the encapsulation layer of the dry-type air-core reactor.

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