Stator bar composite test system

Abstract

The utility model provides a stator bar composite test system comprising an insulation platform used for supporting a stator bar, and the groove part of the stator bar is grounded; the power supply end of the high-voltage power supply is connected with the first end part of the stator bar; the first end of the low-frequency capacitive coupler is connected with the first end part of the stator bar, and the second end of the low-frequency capacitive coupler is grounded; the first wire is wound on the insulating platform, and the first end of the first wire is connected with the second end part of the stator bar; the first end of the high-frequency capacitive coupler is connected with the second end of the first wire, and the second end of the high-frequency capacitive coupler is grounded. According to the stator bar composite test system disclosed by the invention, a high-frequency partial discharge test and a low-frequency partial discharge test can be carried out while an electrical aging test is carried out, so that a composite measurement function is realized, and the test efficiency is improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of stator bar tests, and particularly to a stator bar composite test system. Background Art

[0002] During the whole-life operation of units such as hydro-generators, the stator bars are always subjected to the action of deterioration factors dominated by electrical stress. Stator bars usually need to undergo electrical aging tests to evaluate the expected life of the insulation structure during long-term operation. Among the numerous diagnostic tests for evaluating the insulation structure, the partial discharge test can detect fault characteristics in the early stage of insulation deterioration and can determine the type of fault, having advantages that cannot be compared by other diagnostic tests.

[0003] When conducting diagnostic tests on the insulation structure of stator bars during the manufacturing process, low-frequency partial discharge tests are usually carried out, while during actual operation, high-frequency partial discharge tests are usually carried out. Based on this, how to simultaneously conduct high-frequency partial discharge tests and low-frequency partial discharge tests during the electrical aging test to achieve the function of composite measurement, thereby solving the problem of low test efficiency. Summary of the Invention

[0004] The present disclosure aims to solve at least one of the technical problems in the related art to some extent.

[0005] To this end, the purpose of the present disclosure is to provide a stator bar composite test system.

[0006] To achieve the above object, the present disclosure provides a stator bar composite test system, including: an insulating platform for supporting the stator bar, wherein the slot portion of the stator bar is grounded; a high-voltage power supply, the power supply end of which is connected to the first end of the stator bar; a low-frequency capacitance coupler, the first end of which is connected to the first end of the stator bar, and the second end of which is grounded; a first wire wound around the insulating platform, and the length of the first wire is not less than two-thirds of the length of the slot portion of the stator bar, and the first end of the first wire is connected to the second end of the stator bar; a high-frequency capacitance coupler, the first end of which is connected to the second end of the first wire, and the second end of which is grounded.

[0007] Optionally, the insulating platform includes: a platform body; at least one metal support device disposed on the platform body and configured to support the slot portion of the stator bar; at least one insulating support device disposed on the platform body and configured to support the first end and / or the second end of the stator bar; and at least one insulating winding device disposed on the platform body and configured to wind the first wire.

[0008] Optionally, the metal support device includes: a metal seat disposed on the platform body along the width direction of the platform body; a plurality of metal blocks spaced apart along the width direction of the platform body on the metal seat, and a first limiting groove is formed between adjacent metal blocks for limiting the slot portion of the stator bar.

[0009] Optionally, the metal support device further includes: a plurality of metal bolts, the threaded rods of the metal bolts penetrate through the platform body and the metal seat, and the threaded rods of the metal bolts are threadedly disposed on the metal blocks, and the metal blocks and the metal seat are fastened to the platform body through the metal bolts.

[0010] Optionally, the insulating support device includes: an insulating seat disposed on the platform body along the width direction of the platform body; a plurality of first insulating blocks spaced apart along the width direction of the platform body on the insulating seat, and a second limiting groove is formed between adjacent first insulating blocks for limiting the first end or the second end of the stator bar.

[0011] Optionally, the test system further includes: a second wire connected in series between the power supply end of the high-voltage power supply and the first end of the stator bar and between the first end of the low-frequency capacitive coupler and the first end of the stator bar, and the first end of the second wire is respectively connected to the power supply end of the high-voltage power supply and the first end of the low-frequency capacitive coupler, and the second end of the second wire is connected to the first end of the stator bar; the insulating platform further includes: a plurality of second through holes spaced apart along the width direction of the platform body on the platform body, and the plurality of second through holes and the plurality of second limiting grooves are respectively arranged opposite to each other along the length direction of the platform body, and the second through holes are for the second wire to penetrate through.

[0012] Optionally, the insulating support device further includes: a plurality of first insulating bolts, the threaded rods of the first insulating bolts penetrate through the platform body and the insulating seat, and the threaded rods of the first insulating bolts are threadedly arranged on the first insulating block, and the first insulating block and the insulating seat are fastened to the platform body through the first insulating bolts.

[0013] Optionally, the insulating winding device includes: a plurality of second insulating blocks, the plurality of second insulating blocks are arranged on the platform body at intervals along the width direction of the platform body; a plurality of second insulating bolts, the threaded rods of the second insulating bolts penetrate through the platform body, and the threaded rods of the second insulating bolts are threadedly arranged on the second insulating blocks, and the second insulating blocks are fastened to the platform body through the second insulating bolts.

[0014] Optionally, the insulating platform further includes: a plurality of first through holes, the plurality of first through holes are arranged on the platform body at intervals along the width direction of the platform body, and the first through holes are used for the first wire to penetrate through.

[0015] Optionally, at least one metal support device includes: a first metal support device and a second metal support device, the first metal support device and the second metal support device are arranged at intervals along the length direction of the platform body, and the first metal support device is used to support the first end of the stator bar slot part, and the second metal support device is used to support the second end of the stator bar slot part; at least one insulating support device includes: a first insulating support device and a second insulating support device, the first insulating support device and the second insulating support device are arranged at intervals along the length direction of the platform body, and the first metal support device and the second metal support device are located between the first insulating support device and the second insulating support device, the first insulating support device is used to support the first end of the stator bar, and the second insulating support device is used to support the second end of the stator bar; at least one insulating winding device includes: a first insulating winding device and a second insulating winding device, the first insulating winding device and the second insulating winding device are arranged at intervals along the length direction of the platform body, and the first insulating winding device and the second insulating winding device are located on the side of the second insulating support device away from the first insulating support device, and the first insulating winding device and the second insulating winding device are respectively used for winding the first wire.

[0016] The technical solution provided by the present disclosure may include the following beneficial effects:

[0017] Since the stator bar is placed on the insulating platform and the power supply end of the high-voltage power supply is connected to the first end of the stator bar, the stator bar can perform continuous electrical aging tests by continuously applying voltage from the high-voltage power supply; since the first end of the low-frequency capacitor coupler is connected to the first end of the stator bar and the second end of the low-frequency capacitor coupler is grounded, the stator bar uses the low-frequency capacitor coupler to form a capacitive measurement unit, so as to perform continuous low-frequency partial discharge tests under the continuous application of voltage from the high-voltage power supply; since the first end of the first wire is connected to the second end of the stator bar and the first end of the high-frequency capacitor coupler is connected to the second end of the first wire, and the second end of the high-frequency capacitor coupler is grounded, the stator bar uses the first wire and the high-frequency capacitor coupler to form a capacitive-inductive measurement unit, so as to perform continuous high-frequency partial discharge tests under the continuous application of voltage from the high-voltage power supply. Thus, through the cooperation of the high-voltage power supply, the low-frequency capacitor coupler, the first wire and the high-frequency capacitor coupler, high-frequency partial discharge tests and low-frequency partial discharge tests can be carried out simultaneously during the electrical aging test, thereby realizing the composite measurement function, and further giving full play to the advantages of the combined test in terms of life assessment, fault diagnosis and insulation degradation trend analysis, not only improving the test efficiency, but also meeting the requirements of insulation quality detection and assessment.

[0018] Additional aspects and advantages of the present disclosure will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present disclosure will become apparent and be readily understood from the following description of the embodiments in conjunction with the drawings, in which:

[0020] Figure 1 is a schematic structural diagram of a stator bar composite test system proposed by an embodiment of the present disclosure;

[0021] Figure 2 is a schematic circuit diagram of a stator bar composite test system proposed by an embodiment of the present disclosure;

[0022] Figure 3 is a schematic structural diagram of a stator bar composite test system proposed by an embodiment of the present disclosure;

[0023] As shown in the figure: 1. Insulating platform;

[0024] 11. Platform body;

[0025] 12. Metal support device, 121. Metal seat, 122. Metal block, 123. Metal bolt;

[0026] 13. Insulating support device, 131. Insulating seat, 132. First insulating block, 133. First insulating bolt;

[0027] 14. Insulating winding device, 141. Second insulating block, 142. Second insulating bolt;

[0028] 15. First through hole, 16. Second through hole;

[0029] 2. High-voltage power supply, 3. Low-frequency capacitive coupler, 4. High-frequency capacitive coupler, 5. First wire, 6. Second wire, 7. Stator bar;

[0030] 100. First metal support device, 200. Second metal support device, 300. First insulating support device, 400. Second insulating support device, 500. First insulating winding device, 600. Second insulating winding device. Detailed implementation manners

[0031] The embodiments of the present disclosure will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present disclosure and should not be construed as a limitation to the present disclosure. On the contrary, the embodiments of the present disclosure include all changes, modifications, and equivalents falling within the spirit and scope of the appended claims.

[0032] As Figure 1 and Figure 2 shown, an embodiment of the present disclosure provides a stator bar composite test system, including: an insulating platform 1, a high-voltage power supply 2, a low-frequency capacitive coupler 3, a first wire 5, and a high-frequency capacitive coupler 4. The insulating platform 1 is used to support the stator bar 7. Among them, the slot part of the stator bar 7 is grounded. The power supply end of the high-voltage power supply 2 is connected to the first end of the stator bar 7. The first end of the low-frequency capacitive coupler 3 is connected to the first end of the stator bar 7. The second end of the low-frequency capacitive coupler 3 is grounded. The first wire 5 is wound around the insulating platform 1, and the length of the first wire 5 is not less than two-thirds of the length of the slot part of the stator bar 7. The first end of the first wire 5 is connected to the second end of the stator bar 7. The first end of the high-frequency capacitive coupler 4 is connected to the second end of the first wire 5, and the second end of the high-frequency capacitive coupler 4 is grounded.

[0033] It can be understood that since the stator bar 7 is placed on the insulating platform 1, and the power supply end of the high-voltage power supply 2 is connected to the first end of the stator bar 7, the stator bar 7 can perform continuous electrical aging tests by continuously applying voltage from the high-voltage power supply 2; since the first end of the low-frequency capacitive coupler 3 is connected to the first end of the stator bar 7, and the second end of the low-frequency capacitive coupler 3 is grounded, the stator bar 7 forms a capacitive measurement unit by using the low-frequency capacitive coupler 3, so as to perform continuous low-frequency partial discharge tests under the continuous voltage application of the high-voltage power supply 2; since the first end of the first wire 5 is connected to the second end of the stator bar 7, and the first end of the high-frequency capacitive coupler 4 is connected to the second end of the first wire 5, and the second end of the high-frequency capacitive coupler 4 is grounded, the stator bar 7 forms a capacitive-inductive measurement unit by using the first wire 5 and the high-frequency capacitive coupler 4, so as to perform continuous high-frequency partial discharge tests under the continuous voltage application of the high-voltage power supply 2.

[0034] Thus, through the cooperation of the high-voltage power supply 2, the low-frequency capacitive coupler 3, the first wire 5 and the high-frequency capacitive coupler 4, high-frequency partial discharge tests and low-frequency partial discharge tests can be carried out simultaneously during the electrical aging test, thereby realizing the composite measurement function, and further giving full play to the advantages of the combined test in terms of life assessment, fault diagnosis and insulation degradation trend analysis, not only improving the test efficiency, but also meeting the requirements of insulation quality detection and assessment.

[0035] It should be noted that the electrical aging test, the low-frequency partial discharge test and the high-frequency partial discharge test of the stator bar 7 are all important means of insulation diagnosis and life assessment, and each test has its own specific implementation standards and limited implementation conditions. Among them, the low-frequency partial discharge test carried out during the manufacturing process requires the test sample to have capacitive characteristics and be standardized and calibrated in terms of apparent discharge quantity, while the high-frequency partial discharge test carried out during actual operation requires the test sample to have capacitive-inductive characteristics, filter out some low-frequency interference signals structurally, and does not perform standardized program processing.

[0036] This embodiment realizes the combination of the electrical aging test, the low-frequency partial discharge test and the high-frequency partial discharge test by using the composite test system, and combines the three tests to give full play to the advantages of the combined test in terms of life assessment, fault diagnosis and insulation degradation trend analysis.

[0037] Among them, the stator bar 7, as half of the entire coil, is an important component in motors such as hydro-generators. The stator bar 7 includes: a slot portion provided in the middle and a first end portion and a second end portion provided at both ends. The stator bar 7 can be a structure close to a U shape or a structure close to a Z shape, and there is no limitation in this regard.

[0038] The insulating platform 1 is used to provide insulating support for the stator bar 7, so that abnormal air flashover discharge does not occur during the electrical aging test of the stator bar 7, ensuring the stable test of the stator bar 7. The specific type of the insulating platform 1 can be set according to actual needs, and no limitation is imposed thereon.

[0039] The high-voltage power supply 2 is used to provide high voltage. The specific type of the high-voltage power supply 2 can be set according to actual needs, and no limitation is imposed thereon.

[0040] The low-frequency capacitive coupler 3 is used for the access of the stator bar 7 to form a capacitive measurement unit, so as to perform continuous low-frequency partial discharge tests under the continuous application of voltage by the high-voltage power supply 2. The specific type of the low-frequency capacitive coupler 3 can be set according to actual needs, and no limitation is imposed thereon.

[0041] The first wire 5 and the high-frequency capacitive coupler 4 are used for the access of the stator bar 7 to form a capacitive-inductive measurement unit, so as to perform continuous high-frequency partial discharge tests under the continuous application of voltage by the high-voltage power supply 2. The first wire 5 and the high-frequency capacitive coupler 4 can simulate the low-frequency noise filtering system in the on-site test. The specific type of the first wire 5 and the high-frequency capacitive coupler 4 can be set according to actual needs, and no limitation is imposed thereon.

[0042] As Figure 1 shown, in some embodiments, the insulating platform 1 includes: a platform body 11, at least one metal support device 12, at least one insulating support device 13, and at least one insulating winding device 14. The metal support device 12 is arranged on the platform body 11, and the metal support device 12 is used to support the slot part of the stator bar 7. The insulating support device 13 is arranged on the platform body 11, and the insulating support device 13 is used to support the first end and / or the second end of the stator bar 7. The insulating winding device 14 is arranged on the platform body 11, and the insulating winding device 14 is used to wind the first wire 5.

[0043] It can be understood that since the metal support device 12 and the insulating support device 13 are respectively arranged on the platform body 11, and the metal support device 12 is used to support the slot part of the stator bar 7, and the insulating support device 13 is used to support the first end and / or the second end of the stator bar 7, the stator bar 7 can be stably supported on the platform body 11 by the cooperation of the metal support device 12 and the insulating support device 13. At the same time, by using the metal conductive property of the metal support device 12, the stator bar 7 can also play a role in auxiliary equipotential from the slot part. Thus, the stable and accurate test of the stator bar 7 is ensured.

[0044] Since the insulating wire winding device 14 is arranged on the platform body 11 and the insulating wire winding device 14 is used for winding the first wire 5, the first wire 5 can be stably arranged on the platform body 11 by using the insulating wire winding device 14, thereby ensuring the stable and accurate test of the stator bar 7.

[0045] It should be noted that the platform body 11 is used to carry the metal support device 12, the insulating support device 13, the insulating wire winding device 14, etc., so as to finally realize the stable and safe test of the stator bar 7. The specific type of the platform body 11 can be set according to actual needs and is not limited thereto. By way of example, the platform body 11 is a solid cuboid structure with a thickness of not less than 5 mm. The epoxy glass cloth board of model 3240 is used as the base material and can be placed on an insulating support frame, a wooden table or fastened to a special test box during use.

[0046] The metal support device 12 is used to support the slot part of the stator bar 7. It is made of metal material. The specific type of the metal support device 12 can be set according to actual needs and is not limited thereto. Among them, the number of the metal support devices 12 can be one, two, three, four, five, etc.

[0047] The insulating support device 13 is used to support the first end and / or the second end of the stator bar 7. It is made of insulating material. The specific type of the insulating support device 13 can be set according to actual needs and is not limited thereto. Among them, the number of the insulating support devices 13 can be one, two, three, four, five, etc.

[0048] The insulating wire winding device 14 is used for winding the first wire 5. It is made of insulating material. The specific type of the insulating wire winding device 14 can be set according to actual needs and is not limited thereto. Among them, the number of the insulating wire winding devices 14 can be one, two, three, four, five, etc.

[0049] As Figure 1 shown, in some embodiments, the metal support device 12 includes: a metal seat 121 and a plurality of metal blocks 122. The metal seat 121 is arranged on the platform body 11 along the width direction of the platform body 11. The plurality of metal blocks 122 are arranged on the metal seat 121 at intervals along the width direction of the platform body 11, and a first limiting groove is formed between adjacent metal blocks 122. The first limiting groove is used for limiting the slot part of the stator bar 7.

[0050] It can be understood that since the metal seat 121 is arranged on the platform body 11 along the width direction of the platform body 11, and a plurality of metal blocks 122 are arranged on the metal seat 121 at intervals along the width direction of the platform body 11, a first limiting groove for limiting the slot part of the stator bar 7 is formed between adjacent metal blocks 122, so that a plurality of metal structures for supporting the slot part of the stator bar 7 are formed in the width direction of the platform body 11, thereby ensuring the stable arrangement of the stator bar 7 on the platform body 11. At the same time, by utilizing the conductive characteristics of the metal structure, the slot part of the stator bar 7 can also play a role in assisting the equipotential. Thus, the stable and accurate test of the stator bar 7 is ensured.

[0051] It should be noted that the metal seat 121 is used to support the slot part of the stator bar 7. The specific type of the metal seat 121 can be set according to actual needs, and there is no limitation in this regard. For example, the metal seat 121 is of a cuboid structure, the material is a light alloy, and the length of the metal seat 121 is the same as the width of the platform body 11.

[0052] The metal block 122 is used to form the first limiting groove to limit the slot part of the stator bar 7 in the width direction of the platform body 11. The specific type of the metal block 122 can be set according to actual needs, and there is no limitation in this regard. For example, the metal block 122 is of a cuboid structure, and the material is a light alloy. Among them, the number of the metal blocks 122 can be two, three, four, five, six, etc.

[0053] As Figure 1 shown, in some embodiments, the metal support device 12 further includes: a plurality of metal bolts 123. The threaded rod of the metal bolt 123 penetrates through the platform body 11 and the metal seat 121, and the threaded rod of the metal bolt 123 is threadedly arranged on the metal block 122. The metal block 122 and the metal seat 121 are fastened to the platform body 11 through the metal bolt 123.

[0054] It can be understood that since the threaded rod of the metal bolt 123 penetrates through the platform body 11 and the metal seat 121, and the threaded rod of the metal bolt 123 is threadedly arranged on the metal block 122, the metal block 122 and the metal seat 121 can be stably fastened to the platform body 11 by using the metal bolt 123, and at the same time, it is convenient for disassembly and assembly, making the use of the metal support device 12 more flexible and convenient.

[0055] It should be noted that the metal bolt 123 is used to fasten the metal block 122 and the metal seat 121 to the platform body 11. The specific type of the metal bolt 123 can be set according to actual needs, and there is no limitation in this regard. For example, the material of the metal bolt 123 is a light alloy. Through holes adapted to the metal bolt 123 are drilled on both the platform body 11 and the metal seat 121, and a threaded hole adapted to the metal bolt 123 is drilled on the metal block 122. The threaded rod of the metal bolt 123 sequentially passes through the through holes of the platform body 11 and the metal seat 121 and is then threadedly arranged in the threaded hole of the metal block 122. At the same time, the head of the metal bolt 123 abuts against the platform body 11. Among them, the number of metal bolts 123 corresponds to the number of metal blocks 122, and can be two, three, four, five, six, etc.

[0056] As Figure 1 shown, in some embodiments, the insulating support device 13 includes: an insulating seat 131 and a plurality of first insulating blocks 132. The insulating seat 131 is arranged on the platform body 11 along the width direction of the platform body 11, and the plurality of first insulating blocks 132 are arranged on the insulating seat 131 at intervals along the width direction of the platform body 11, and a second limiting groove is formed between adjacent first insulating blocks 132 for limiting the first end or the second end of the stator bar 7.

[0057] It can be understood that due to the insulating seat 131 and the plurality of first insulating blocks 132, the insulating seat 131 is arranged on the platform body 11 along the width direction of the platform body 11, the plurality of first insulating blocks 132 are arranged on the insulating seat 131 at intervals along the width direction of the platform body 11, and a second limiting groove for limiting the first end or the second end of the stator bar 7 is formed between adjacent first insulating blocks 132, thus ensuring the stable arrangement of the stator bar 7 on the platform body 11, and further ensuring the stable and accurate test of the stator bar 7.

[0058] It should be noted that the insulating seat 131 is used to support the first end or the second end of the stator bar 7. The specific type of the insulating seat 131 can be set according to actual needs, and there is no limitation in this regard. For example, the insulating seat 131 is a cuboid structure, and the material is epoxy glass cloth board of model 3240. The length of the insulating seat 131 is the same as the width of the platform body 11.

[0059] The first insulating block 132 is used to form the second limiting groove to limit the first end or the second end of the stator bar 7 in the width direction of the platform body 11. The specific type of the first insulating block 132 can be set according to actual needs, and there is no limitation in this regard. For example, the first insulating block 132 is a cuboid structure, and the material is epoxy glass cloth board of model 3240. Among them, the number of the first insulating blocks 132 can be two, three, four, five, six, etc.

[0060] As Figure 1 , Figure 2 and Figure 3 shown, in some embodiments, the test system further includes: a second wire 6, the second wire 6 being connected in series between the power supply end of the high-voltage power supply 2 and the first end of the stator bar 7 and between the first end of the low-frequency capacitive coupler 3 and the first end of the stator bar 7, and the first end of the second wire 6 being connected to the power supply end of the high-voltage power supply 2 and the first end of the low-frequency capacitive coupler 3 respectively, and the second end of the second wire 6 being connected to the first end of the stator bar 7; the insulating platform 1 further includes: a plurality of second through holes 16, the plurality of second through holes 16 being arranged at intervals along the width direction of the platform body 11 on the platform body 11, and the plurality of second through holes 16 and the plurality of second limiting grooves being arranged opposite to each other along the length direction of the platform body 11, the second through holes 16 being used for the second wire 6 to pass through.

[0061] It can be understood that, since the second wire 6 is connected in series between the power supply end of the high-voltage power supply 2 and the first end of the stator bar 7 and between the first end of the low-frequency capacitive coupler 3 and the first end of the stator bar 7, the high-voltage power supply 2 can use the second wire 6 to supply high-voltage electricity to the stator bar 7. At the same time, the stator bar 7 can use the second wire 6 to access the low-frequency capacitive coupler 3. Thus, the stable test of the stator bar 7 is ensured.

[0062] Since the plurality of second through holes 16 are arranged at intervals along the width direction of the platform body 11 on the platform body 11, and the plurality of second through holes 16 and the plurality of second limiting grooves are arranged opposite to each other along the length direction of the platform body 11, the second wire 6 can smoothly extend out of the platform body 11 by using the second through holes 16, so as to facilitate the stable wiring of the second wire 6, and further ensure the stable test of the stator bar 7.

[0063] It should be noted that the specific type of the second wire 6 can be set according to actual needs, and no limitation is imposed thereon.

[0064] The second through holes 16 are used for the second wire 6 to pass through. The specific type of the second through holes 16 can be set according to actual needs, and no limitation is imposed thereon. Among them, the number of the second through holes 16 can be two, three, four, five, six, etc.

[0065] As Figure 1 shown, in some embodiments, the insulating support device 13 further includes: a plurality of first insulating bolts 133, the threaded rod of the first insulating bolt 133 passing through the platform body 11 and the insulating seat 131, and the threaded rod of the first insulating bolt 133 being threadedly arranged on the first insulating block 132, the first insulating block 132 and the insulating seat 131 being fastened to the platform body 11 by the first insulating bolt 133.

[0066] It can be understood that since the threaded rod of the first insulating bolt 133 penetrates through the platform body 11 and the insulating seat 131, and the threaded rod of the first insulating bolt 133 is threaded on the first insulating block 132, the first insulating block 132 and the insulating seat 131 can be stably fastened to the platform body 11 by means of the first insulating bolt 133, and at the same time, it is convenient for disassembly and assembly, making the use of the insulating support device 13 more flexible and convenient.

[0067] It should be noted that the first insulating bolt 133 is used to fasten the first insulating block 132 and the insulating seat 131 to the platform body 11. The specific type of the first insulating bolt 133 can be set according to actual needs, and there is no limitation in this regard. For example, the first insulating bolt 133 is processed from an epoxy glass cloth board with a model of 3240. Through holes adapted to the first insulating bolt 133 are drilled on both the platform body 11 and the insulating seat 131, and a threaded hole adapted to the first insulating bolt 133 is drilled on the first insulating block 132. The threaded rod of the first insulating bolt 133 sequentially penetrates through the through hole of the platform body 11 and the through hole of the insulating seat 131 and is then threaded in the threaded hole of the first insulating block 132. At the same time, the head of the first insulating bolt 133 abuts against the platform body 11. Among them, the number of the first insulating bolts 133 corresponds to the number of the first insulating blocks 132, and can be two, three, four, five, six, etc.

[0068] As Figure 1 shown, in some embodiments, the insulating winding device 14 includes: a plurality of second insulating blocks 141 and a plurality of second insulating bolts 142. The plurality of second insulating blocks 141 are arranged on the platform body 11 at intervals along the width direction of the platform body 11. The threaded rod of the second insulating bolt 142 penetrates through the platform body 11, and the threaded rod of the second insulating bolt 142 is threaded on the second insulating block 141. The second insulating block 141 is fastened to the platform body 11 by means of the second insulating bolt 142.

[0069] It can be understood that since the plurality of second insulating blocks 141 are arranged on the platform body 11 at intervals along the width direction of the platform body 11, the first wire 5 can be stably wound around the platform body 11 by means of the plurality of second insulating blocks 141, thereby ensuring the stable and accurate test of the stator bar 7.

[0070] Since the threaded rod of the second insulating bolt 142 penetrates through the platform body 11, and the threaded rod of the second insulating bolt 142 is threaded on the second insulating block 141, the second insulating block 141 can be stably fastened to the platform body 11 by means of the second insulating bolt 142, and at the same time, it is convenient for disassembly and assembly, making the use of the insulating winding device 14 more flexible and convenient.

[0071] It should be noted that the second insulating block 141 is used for winding the first wire 5, so that while the first wire 5 occupies a smaller area, its length can reach two-thirds of the length of the slot part of the stator bar 7. The specific type of the second insulating block 141 can be set according to actual needs, and there is no limitation in this regard. For example, the second insulating block 141 is a cube structure, and its material is epoxy glass cloth board of type 3240. After being fixed, the second insulating block 141 is wound with polyimide film tape with a temperature resistance grade not lower than 180(H)°C, and the contact part between the first wire 5 and the second insulating block 141 is tied tightly with polytetrafluoroethylene tape.

[0072] The second insulating bolt 142 is used to fasten the second insulating block 141 to the platform body 11. The specific type of the second insulating bolt 142 can be set according to actual needs, and there is no limitation in this regard. For example, the second insulating bolt 142 is processed from epoxy glass cloth board of type 3240. After being fixed, the second insulating bolt 142 is filled with low-viscosity room-temperature curing epoxy resin glue. The platform body 11 is drilled with through holes adapted to the second insulating bolt 142, and the second insulating block 141 is drilled with threaded holes adapted to the second insulating bolt 142. The threaded rod of the second insulating bolt 142 passes through the through hole of the platform body 11 and is threadedly arranged in the threaded hole of the second insulating block 141.

[0073] Among them, the number of the second insulating blocks 141 and the second insulating bolts 142 can be two, three, four, five, six, etc.

[0074] As Figure 1 and Figure 3 shown, in some embodiments, the insulating platform 1 further includes: a plurality of first through holes 15. The plurality of first through holes 15 are arranged on the platform body 11 at intervals along the width direction of the platform body 11, and the first through holes 15 are used for the first wire 5 to pass through.

[0075] It can be understood that since the plurality of first through holes 15 are arranged on the platform body 11 at intervals along the width direction of the platform body 11, the first wire 5 can smoothly extend out of the platform body 11 by using the first through holes 15, so as to facilitate the stable wiring of the first wire 5, and further ensure the stable test of the stator bar 7.

[0076] It should be noted that the first through hole 15 is used for the first wire 5 to pass through. The specific type of the first through hole 15 can be set according to actual needs, and there is no limitation in this regard. Among them, a pre-folded polytetrafluoroethylene tape can be placed at the contact part between the first wire 5 and the first through hole 15.

[0077] The number of the first through holes 15 can be two, three, four, five, six, etc.

[0078] On both sides of the platform body 11 near the edge, five small circular through-holes with smaller diameters are drilled respectively as the first through-hole 15 and the second through-hole 16. In the middle of the platform body 11, circular through-holes arranged in 6 rows and 4 columns are drilled near the second through-hole 16 as the through-holes for the metal bolts 123 and the first insulating bolts 133 to pass through. In the middle of the platform body 11, circular through-holes arranged in 6 rows and 2 columns are drilled near the first through-hole 15 as the through-holes for the second insulating bolts 142 to pass through.

[0079] As Figure 3 shown, in some embodiments, at least one metal support device 12 includes: a first metal support device 100 and a second metal support device 200. The first metal support device 100 and the second metal support device 200 are arranged at intervals along the length direction of the platform body 11. The first metal support device 100 is used to support the first end of the slot part of the stator bar 7, and the second metal support device 200 is used to support the second end of the slot part of the stator bar 7. At least one insulating support device 13 includes: a first insulating support device 300 and a second insulating support device 400. The first insulating support device 300 and the second insulating support device 400 are arranged at intervals along the length direction of the platform body 11. The first metal support device 100 and the second metal support device 200 are located between the first insulating support device 300 and the second insulating support device 400. The first insulating support device 300 is used to support the first end part of the stator bar 7, and the second insulating support device 400 is used to support the second end part of the stator bar 7. At least one insulating winding device 14 includes: a first insulating winding device 500 and a second insulating winding device 600. The first insulating winding device 500 and the second insulating winding device 600 are arranged at intervals along the length direction of the platform body 11. The first insulating winding device 500 and the second insulating winding device 600 are located on the side of the second insulating support device 400 away from the first insulating support device 300. The first insulating winding device 500 and the second insulating winding device 600 are respectively used for winding the first wire 5.

[0080] It can be understood that, since the first metal support device 100 and the second metal support device 200 are arranged at intervals along the length direction of the platform body 11, and the first metal support device 100 is used to support the first end of the slot portion of the stator bar 7, and the second metal support device 200 is used to support the second end of the slot portion of the stator bar 7, the slot portion of the stator bar 7 can be stably arranged on the platform body 11 by the cooperation of the first metal support device 100 and the second metal support device 200; since the first insulating support device 300 and the second insulating support device 400 are arranged at intervals along the length direction of the platform body 11, and the first insulating support device 300 is used to support the first end portion of the stator bar 7, and the second insulating support device 400 is used to support the second end portion of the stator bar 7, the end portion of the stator bar 7 can be stably arranged on the platform body 11 by the cooperation of the first insulating support device 300 and the second insulating support device 400; since the first insulating winding device 500 and the second insulating winding device 600 are arranged at intervals along the length direction of the platform body 11, and the first insulating winding device 500 and the second insulating winding device 600 are respectively used for winding the first wire 5, the first wire 5 can be stably arranged on the platform body 11 by the cooperation of the first insulating winding device 500 and the second insulating winding device 600. Thus, the stable and accurate test of the stator bar 7 is ensured.

[0081] It should be noted that the first metal support device 100 and the second metal support device 200 are both metal support devices 12, the first insulating support device 300 and the second insulating support device 400 are both insulating support devices 13, and the first insulating winding device 500 and the second insulating winding device 600 are both insulating winding devices 14.

[0082] Among them, the winding method of the first wire 5 can be set according to actual needs, and no limitation is imposed thereon.

[0083] In the description of the present disclosure, terms such as "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of the present disclosure, unless otherwise specified, the meaning of "a plurality" is two or more.

[0084] Any process or method description shown in the flowchart or described in other ways herein can be understood as representing a module, segment, or part of code including one or more executable instructions for implementing a specific logical function or process, and the scope of the preferred embodiments of the present disclosure includes additional implementations, where the functions can be executed in a substantially simultaneous manner or in a reverse order according to the involved functions, rather than in the order shown or discussed, which should be understood by those skilled in the technical field to which the embodiments of the present disclosure belong.

[0085] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0086] Although the embodiments of the present disclosure have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present disclosure. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present disclosure.

Claims

1. A stator bar composite test system, characterized in that: include: An insulating platform, the insulating platform is used to support the stator bar, wherein the slot portion of the stator bar is grounded; A high-voltage power supply, wherein a power supply end of the high-voltage power supply is connected to a first end of the stator bar; A low-frequency capacitor coupler, wherein a first end of the low-frequency capacitor coupler is connected to a first end of the stator bar, and a second end of the low-frequency capacitor coupler is grounded; a first conductor, wherein the first conductor is wound on the insulating platform, and the length of the first conductor is not less than two-thirds of the length of the slot of the stator bar, and the first end of the first conductor is connected to the second end of the stator bar; A high-frequency capacitor coupler, wherein a first end of the high-frequency capacitor coupler is connected to a second end of the first conductive wire, and a second end of the high-frequency capacitor coupler is grounded.

2. The stator wire bar composite test system according to claim 1, characterized in that: The insulating platform comprises: Platform body; at least one metal support device, the metal support device being disposed on the platform body and used for supporting the slot portion of the stator bar; at least one insulating support device, the insulating support device being disposed on the platform body and used for supporting the first end and / or the second end of the stator bar; At least one insulating winding device is disposed on the platform body and is used for winding the first conducting wire.

3. The stator bar composite test system according to claim 2, characterized in that: The metal supporting device comprises: A metal seat, wherein the metal seat is arranged on the platform body along the width direction of the platform body; A plurality of metal blocks are arranged on the metal seat at intervals along the width direction of the platform body, and a first limiting groove is formed between adjacent metal blocks, wherein the first limiting groove is used to limit the groove portion of the stator bar.

4. The stator wire bar composite test system according to claim 3, characterized in that: The metal support device also includes: A plurality of metal bolts, the threaded rods of the metal bolts penetrate the platform body and the metal seat, and the threaded rods of the metal bolts are threadedly arranged on the metal block, and the metal block and the metal seat are joined on the platform body through the metal bolts.

5. The stator bar composite test system according to claim 2, characterized in that: The insulating support device comprises: An insulating seat, the insulating seat being arranged on the platform body along the width direction of the platform body; A plurality of first insulating blocks are arranged on the insulating seat at intervals along the width direction of the platform body, and a second limiting groove is formed between adjacent first insulating blocks, and the second limiting groove is used to limit the first end or the second end of the stator wire bar.

6. The stator wire bar composite test system according to claim 5, characterized in that: The test system further includes: a second wire, the second wire is connected in series between the power supply end of the high-voltage power supply and the first end of the stator bar and between the first end of the low-frequency capacitive coupler and the first end of the stator bar, and the first end of the second wire is respectively connected to the power supply end of the high-voltage power supply and the first end of the low-frequency capacitive coupler, and the second end of the second wire is connected to the first end of the stator bar; The insulating platform also includes: a plurality of second through holes, which are arranged on the platform body at intervals along the width direction of the platform body, and the plurality of second through holes and the plurality of second limiting grooves are arranged relatively along the length direction of the platform body, and the second through holes are used for the second wires to pass through.

7. The stator bar composite test system according to claim 5, characterized in that: The insulating support device also includes: A plurality of first insulating bolts, wherein the threaded rods of the first insulating bolts penetrate the platform body and the insulating seat, and the threaded rods of the first insulating bolts are threadedly arranged on the first insulating block, and the first insulating block and the insulating seat are coupled to the platform body through the first insulating bolts.

8. The stator bar composite test system according to claim 2, characterized in that: The insulating winding device comprises: A plurality of second insulating blocks, wherein the plurality of second insulating blocks are arranged on the platform body at intervals along the width direction of the platform body; A plurality of second insulating bolts, wherein the threaded rods of the second insulating bolts penetrate the platform body, and the threaded rods of the second insulating bolts are threadedly arranged on the second insulating block, and the second insulating block is engaged with the platform body through the second insulating bolts.

9. The stator bar composite test system according to claim 2, characterized in that: The insulating platform also includes: A plurality of first through holes are arranged on the platform body at intervals along a width direction of the platform body, and the first through holes are used for the first wires to pass through.

10. The stator wire bar composite test system according to any one of claims 2 to 9, characterized in that: At least one metal support device includes: a first metal support device and a second metal support device, wherein the first metal support device and the second metal support device are arranged at intervals along the length direction of the platform body, and the first metal support device is used to support the first end of the stator wire bar slot portion, and the second metal support device is used to support the second end of the stator wire bar slot portion; At least one insulating support device comprises: a first insulating support device and a second insulating support device, wherein the first insulating support device and the second insulating support device are arranged at intervals along the length direction of the platform body, and the first metal support device and the second metal support device are located between the first insulating support device and the second insulating support device, the first insulating support device is used to support the first end of the stator bar, and the second insulating support device is used to support the second end of the stator bar; At least one insulating winding device includes: a first insulating winding device and a second insulating winding device, the first insulating winding device and the second insulating winding device are arranged at intervals along the length direction of the platform body, and the first insulating winding device and the second insulating winding device are located on the side of the second insulating support device away from the first insulating support device, and the first insulating winding device and the second insulating winding device are respectively used to wind the first wire.

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