CN112415345A - Distribution insulator and peripheral electrical insulator system defect characteristic detection platform thereof - Google Patents
Distribution insulator and peripheral electrical insulator system defect characteristic detection platform thereof Download PDFInfo
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- CN112415345A CN112415345A CN202011316247.6A CN202011316247A CN112415345A CN 112415345 A CN112415345 A CN 112415345A CN 202011316247 A CN202011316247 A CN 202011316247A CN 112415345 A CN112415345 A CN 112415345A
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- 239000012212 insulator Substances 0.000 title claims abstract description 91
- 230000007547 defect Effects 0.000 title claims abstract description 29
- 238000001514 detection method Methods 0.000 title abstract description 15
- 239000000615 nonconductor Substances 0.000 title abstract description 8
- 230000002093 peripheral effect Effects 0.000 title abstract description 5
- 238000012360 testing method Methods 0.000 claims abstract description 34
- 239000000463 material Substances 0.000 claims description 6
- 239000004593 Epoxy Substances 0.000 claims description 3
- 239000011810 insulating material Substances 0.000 claims description 3
- 238000010292 electrical insulation Methods 0.000 claims 9
- 239000003989 dielectric material Substances 0.000 claims 1
- 238000009413 insulation Methods 0.000 abstract description 8
- 239000004020 conductor Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910052573 porcelain Inorganic materials 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- -1 binding wires Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1218—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing using optical methods; using charged particle, e.g. electron, beams or X-rays
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1245—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of line insulators or spacers, e.g. ceramic overhead line cap insulators; of insulators in HV bushings
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Insulators (AREA)
- Testing Relating To Insulation (AREA)
Abstract
The invention belongs to the technical field of power equipment insulation, and particularly relates to a distribution insulator and a peripheral electrical insulator system defect characteristic detection platform thereof. The invention is that the upper part of two wire fixing and supporting parts is provided with a wire for testing, one side of the two wire fixing and supporting parts is provided with an ultrahigh frequency sensor fixing and supporting part, and the other side is provided with an ultraviolet imager fixing and supporting part; and an insulator fixing and supporting part is arranged at the lower part of the middle position of the two lead fixing and supporting parts, and a replaceable test insulator is connected between the upper part of the insulator fixing and supporting part and the test lead. The device has the advantages of simple structure, reasonable design and simple use and operation, and is used for realizing the detection test research of defects and field intensity influence. The fixed observation of the ultrahigh frequency imager and the ultraviolet imager can be realized only by replacing different defect insulators and adjusting the height of the insulator fixed supporting part, so that the characteristic quantities detected by different types of defects keep the same observation condition, and the comparability of data is ensured.
Description
Technical Field
The invention belongs to the technical field of power equipment insulation, and particularly relates to a distribution insulator and a peripheral electrical insulator system defect characteristic detection platform thereof.
Background
In urban power distribution networks, the insulation of overhead conductors has realized large-area coverage, and is a common insulation protection measure for the current power distribution networks.
The overhead insulated wire is mainly supported by insulators made of porcelain or composite materials on a power distribution tower to realize electric insulation. The common porcelain insulator and the lead are fixed by a binding wire made of aluminum and other materials. From the insulation perspective, the insulator, the wire, the binding wire and the air insulation form a triple junction area of the insulating medium with concentrated electric field intensity. If the binding wire has a tip, or an insulator has a defect, or the insulating skin of the wire is damaged, the field intensity of the junction of the three parts can be enhanced. Under the long-term action of strong field, the insulation degradation and aging of the insulator and the lead can be accelerated, corona, partial discharge and even spark discharge are generated, single-phase earth fault is caused, and the personal safety and the reliability of power supply are seriously influenced.
Therefore, it is necessary to know the field strength at the three boundaries and to know the factors affecting the field strength variation, so as to avoid the generation of defects and faults.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a distribution insulator and a peripheral electrical insulator system defect characteristic detection platform thereof. The detection platform can be used for building a defect characteristic quantity detection system and ensuring that the characteristic quantity is correctly evaluated under the same detection condition by replacing insulators, binding wires, lead defects and the like of different types.
The technical scheme adopted by the invention for realizing the purpose is as follows:
a distribution insulator and surrounding electrical insulator system defect characteristic detection platform thereof comprises a wire fixed support part, an insulator fixed support part, an ultrahigh frequency sensor fixed support part and an ultraviolet imager fixed support part; the device comprises a conductor fixing and supporting part, a conductor for testing, an ultrahigh frequency sensor fixing and supporting part, an ultraviolet imager fixing and supporting part, an insulator fixing and supporting part and a replaceable testing insulator, wherein the conductor for testing is placed on the upper parts of the two conductor fixing and supporting parts, the ultrahigh frequency sensor fixing and supporting part is arranged on one side of the two conductor fixing and supporting parts, the ultraviolet imager fixing and supporting part is arranged on the other side of the two conductor fixing and supporting parts, the insulator fixing and supporting part is arranged on the lower part of the middle position of the two conductor fixing.
The heights of the two lead fixing and supporting parts, the ultrahigh frequency sensor fixing and supporting part and the ultraviolet imager fixing and supporting part are fixed and unchanged, and the height of the insulator fixing and supporting part is adjustable.
The lead fixing and supporting part consists of two supports with the height of 1.5m, and the distance between the two supports is 2.5m-3.5 m; the bottom of the wire fixing and supporting part is of a tripod structure, the upper part of the tripod is connected with a straight rod, and the upper part of the straight rod is connected with an upper supporting part of a V-shaped structure; wherein, the top of the upper part of the straight rod is provided with a groove, the bottom of the supporting part is inserted into the groove, and the upper part of the upper supporting part is provided with a lead for supporting test.
The V-shaped structural material of the upper supporting part is made of insulating materials such as epoxy and the like.
The inner wall of the groove is provided with threads, and the bottom of the upper supporting part of the V-shaped structure is provided with external threads, so that the bottom of the upper supporting part of the V-shaped structure can be just inserted into the groove and the V-shaped structure and the upper supporting part of the V-shaped structure are firmly connected through the threads.
The insulator fixed supporting part is composed of supports with adjustable height of 1m-1.5m and is arranged in the middle of the two wire fixed supporting parts.
The bottom of the insulator fixed supporting part is of a tripod structure, and the middle part of the tripod is vertically and fixedly connected with a telescopic insulator fixed supporting part height-adjustable part upwards, so that the whole height of the insulator fixed supporting part is 1m-1.5 m.
A groove is formed in the top end of the height-adjustable part of the insulator fixing and supporting part, so that the bottom of the upper supporting part of the V-shaped structure is just inserted into the reserved groove; two ends of the upper part of the V-shaped structure at the upper part of the upper supporting part are welded on the cross arm; a round hole is reserved on one upward side of the cross arm and is connected with a bolt at the lower part of the replaceable test insulator through a screw; the replaceable test insulator is connected with the test wire through a binding wire.
The bottom bracket of the ultrahigh frequency sensor fixing and supporting part is of a tripod structure, the upper part of the ultrahigh frequency sensor fixing and supporting part is connected with a supporting table, and an ultrahigh frequency sensor is arranged on the supporting table; the ultrahigh frequency sensor is right opposite to the position of the replaceable test insulator, and the distance between the ultrahigh frequency sensor and the fixed supporting part of the insulator is 2-5 m.
The ultrahigh frequency sensor fixing and supporting part is arranged on one side far away from the ultrahigh frequency sensor fixing and supporting part, the bottom of the ultraviolet imager fixing and supporting part is of a tripod structure, the upper part of the ultraviolet imager fixing and supporting part is connected with a supporting table, and an ultraviolet imager is arranged on the supporting table; the ultraviolet imager is right opposite to the position of the replaceable test insulator, and the distance between the ultraviolet imager and the insulator fixing and supporting part is 2m-5 m.
The invention has the following beneficial effects and advantages:
the invention provides a detection platform which is simple in structure, reasonable in design and simple in operation and is used for realizing detection test research on defects and field intensity influence. When the product is used specifically, the fixed observation of the ultrahigh frequency and ultraviolet imagers can be realized only by replacing different defect insulators and adjusting the height of the fixed supporting part of the insulators, so that the characteristic quantities detected by different types of defects keep the same observation conditions, and the comparability of data is ensured.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic view of an assembly structure of the height adjustable part and the cross arm of the middle insulator fixing and supporting part of the invention;
fig. 3 is a schematic structural diagram of a fixed supporting part of the ultrahigh frequency sensor in the invention.
In the figure:
the device comprises a wire fixing and supporting part 1, a V-shaped insulating and supporting part 2 at the top of the wire fixing and supporting part, a wire 3 for test, an insulator fixing and supporting part 4, an insulator fixing and supporting part height-adjustable part 5, a cross arm 6, a replaceable test insulator 7, an ultrahigh frequency sensor fixing and supporting part 8, an ultrahigh frequency sensor 9, an ultraviolet imager fixing and supporting part 10, an ultraviolet imager 11, a round hole 13 and a supporting table 14.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
The solution of some embodiments of the invention is described below with reference to fig. 1.
Example 1
The invention provides an embodiment, and relates to a defect characteristic detection platform for a distribution insulator and a surrounding electrical insulator system thereof, as shown in fig. 1, wherein fig. 1 is a schematic structural diagram of the invention.
The detection platform of the invention comprises:
the device comprises four parts, namely a lead fixing and supporting part 1, an insulator fixing and supporting part 4, an ultrahigh frequency sensor fixing and supporting part 8 and an ultraviolet imager fixing and supporting part 10.
The heights of the two lead fixing and supporting parts 1, the ultrahigh frequency sensor fixing and supporting part 8 and the ultraviolet imager fixing and supporting part 10 are fixed and unchanged, and the height of the insulator fixing and supporting part 4 is adjustable, so that the heights of the insulator fixing and supporting parts can be kept consistent with those of other three supporting devices when different insulators are replaced.
The testing device comprises two lead fixing and supporting parts 1, wherein test leads 3 are placed on the upper parts of the two lead fixing and supporting parts 1, ultrahigh frequency sensor fixing and supporting parts 8 are arranged on one sides of the two lead fixing and supporting parts 1, ultraviolet imager fixing and supporting parts 10 are arranged on the other sides of the two lead fixing and supporting parts 1, insulator fixing and supporting parts 4 are arranged on the lower parts of the middle positions of the two lead fixing and supporting parts 1, and replaceable testing insulators 7 are connected between the upper parts of the insulator fixing and supporting parts 4 and the test leads 3.
Furthermore, the lead fixing and supporting part 1 is composed of two supports with the height of 1.5m, and the distance between the two supports is 2.5m-3.5 m.
The bottom bracket of the lead fixing and supporting part 1 is of a conventional commercially available tripod structure and is used for playing a role of stable support; the upper support part of the lead fixing and supporting part 1 is a V-shaped structure for supporting the test lead 3. The bottom support is a tripod formed by welding one ends of three support rods or integrally connecting the three support rods together, and is used for playing a stable supporting role. A straight rod is vertically and fixedly connected to the middle part of the tripod upwards, a groove is reserved at the top end of the upper part of the straight rod, and the bottom of the upper supporting part of the V-shaped structure is just inserted into the reserved groove; the upper support portion is for supporting the test wire 3.
The upper support part V-shaped structural material of the lead fixing and supporting part 1 is made of insulating materials such as epoxy and the like.
The insulator fixing and supporting part 4 is composed of a bracket with the adjustable height of 1m-1.5m and is arranged in the middle of the two wire fixing and supporting parts 1.
The bottom of the insulator fixed supporting part 4 is of a conventional commercially available tripod structure, and is formed by connecting one ends of three supporting rods together and used for playing a stable supporting role; the middle part of the tripod is vertically and fixedly connected with an insulator fixed supporting part height adjustable part 5, the insulator fixed supporting part height adjustable part 5 is a telescopic rod with a telescopic structure, and the length is adjustable, so that the whole height of the insulating fixed supporting part is 1m-1.5 m. The height adjustable part 5 of the insulator fixing and supporting part can adopt two or more telescopic rods which are sold in the market and can be used for adjusting the length in a telescopic way.
The upper part of the height adjustable part 5 of the insulator fixed supporting part is connected with a cross arm 6 which is made of metal and has the length of 0.8-1.5m, and the length value is preferably 1m in specific implementation. The height adjustable part 5 of the insulator fixing and supporting part is fixedly connected to the middle position of the cross arm 6, as shown in fig. 2, fig. 2 is an assembly structure diagram of the height adjustable part of the insulator fixing and supporting part and the cross arm. Wherein, a groove is reserved at the top end of the height adjustable part 5 of the insulator fixed supporting part, so that the bottom of the upper supporting part of the V-shaped structure is just inserted into the reserved groove; and two ends of the upper part of the V-shaped structure at the upper part of the upper supporting part are welded on the cross arm 6.
A round hole 13 is reserved on the upward surface of the cross arm 6, a screw is inserted into the round hole 13, and the round hole is fixedly connected with a bolt at the lower part of a conventional insulator through the screw in a screwing mode. The conventional insulator can be a replaceable test insulator 7. The replaceable test insulator 7 and the test lead 3 are fixedly connected in a winding and binding mode through a binding wire.
As shown in fig. 3, fig. 3 is a schematic structural view of the fixed support part of the uhf sensor in the present invention. The bottom support of the ultrahigh frequency sensor fixing and supporting part 8 is a conventional commercially available tripod structure and is used for playing a role of stable support; the upper part of the ultrahigh frequency sensor fixing and supporting part 8 is welded with a supporting platform 14 with a plane for placing the ultrahigh frequency sensor 9.
The UHF sensor 9 is opposite to the position of the replaceable test insulator 7, and the distance between the UHF sensor and the insulator fixed supporting part 4 is kept between 2 and 5m, preferably 2m in implementation, and the position of the whole UHF sensor fixed supporting part 10 is fixed.
The ultrahigh frequency sensor fixing and supporting part 10 is arranged at one side far away from the ultrahigh frequency sensor fixing and supporting part 8, the structure of the ultraviolet imager fixing and supporting part 10 is the same as that of the ultrahigh frequency sensor fixing and supporting part 8, and a bottom support of the ultraviolet imager fixing and supporting part 10 is of a conventional commercially available tripod structure and is used for playing a role in stable support; a support table with a plane is welded on the upper part of the ultraviolet imager fixing and supporting part 10 and used for placing the ultraviolet imager 11.
The ultraviolet imager 11 is opposite to the positions of the replaceable test insulator 7 and the binding wire, and the distance between the ultraviolet imager and the insulator fixing and supporting part 4 is 2-5m, and the ultraviolet imager is preferably 2m in the specific implementation.
The insulator fixed supporting part 4, the ultrahigh frequency sensor fixed supporting part 8 and the ultraviolet imager fixed supporting part 10 are basically kept at the same height.
Example 2
The invention also provides an embodiment, which is a defect characteristic detection platform for the distribution insulator and the surrounding electrical insulators thereof, wherein a bottom bracket of the lead fixing and supporting part 1 is of a conventional commercially available tripod structure and is used for playing a role of stable support, a groove is reserved at the top end of the upper part of the straight rod, and the bottom of the upper supporting part of the V-shaped structure is just inserted into the reserved groove.
The inner wall of the groove is provided with threads, and the bottom of the upper supporting part of the V-shaped structure is provided with external threads, so that the bottom of the upper supporting part of the V-shaped structure can be just inserted into the groove and the V-shaped structure and the groove are firmly connected through the threads.
In the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The terms "connected" and "fixed" are to be construed broadly, e.g., "connected" may be a fixed connection, a removable connection, or an integral connection. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description of the present invention, it is to be understood that the indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the indicated devices or units must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present specification, the description of the terms "one embodiment," "some embodiments," or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A distribution insulator and around electric insulator system defect characteristic testing platform, characterized by: the device comprises four parts, namely a lead fixing and supporting part (1), an insulator fixing and supporting part (4), an ultrahigh frequency sensor fixing and supporting part (8) and an ultraviolet imager fixing and supporting part (10); wherein, experimental wire (3) of using has been placed on the upper portion of two wire fixed stay parts (1), be equipped with hyperfrequency sensor fixed stay part (8) in one side of two wire fixed stay parts (1), be equipped with ultraviolet imager fixed stay part (10) at the opposite side of two wire fixed stay parts (1), in the intermediate position lower part of two wire fixed stay parts (1), be equipped with insulator fixed stay part (4), be connected with interchangeable experimental insulator (7) between the upper portion of insulator fixed stay part (4) and experimental wire (3) of using.
2. The platform of claim 1 for detecting defects in a distribution insulator and its surrounding electrical insulation system, wherein: the heights of the two lead fixing and supporting parts (1), the ultrahigh frequency sensor fixing and supporting part (8) and the ultraviolet imager fixing and supporting part (10) are fixed and unchanged, and the height of the insulator fixing and supporting part (4) is adjustable.
3. The platform of claim 1 for detecting defects in a distribution insulator and its surrounding electrical insulation system, wherein: the lead fixing and supporting part (1) consists of two supports with the height of 1.5m, and the distance between the two supports is 2.5m-3.5 m; the bottom of the lead fixing and supporting part (1) is of a tripod structure, the upper part of the tripod is connected with a straight rod, and the upper part of the straight rod is connected with an upper supporting part of a V-shaped structure; wherein, the top end of the upper part of the straight rod is provided with a groove, the bottom of the supporting part is inserted into the groove, and the upper part of the upper supporting part is provided with a lead (3) for supporting test.
4. The platform of claim 3 for detecting defects in a distribution insulator and its surrounding electrical insulation system, wherein: the V-shaped structural material of the upper supporting part is made of insulating materials such as epoxy and the like.
5. The platform of claim 3 for detecting defects in a distribution insulator and its surrounding electrical insulation system, wherein: the inner wall of the groove is provided with threads, and the bottom of the upper supporting part of the V-shaped structure is provided with external threads, so that the bottom of the upper supporting part of the V-shaped structure can be just inserted into the groove and the V-shaped structure and the upper supporting part of the V-shaped structure are firmly connected through the threads.
6. The platform of claim 1 for detecting defects in a distribution insulator and its surrounding electrical insulation system, wherein: the insulator fixing and supporting part (4) is composed of a support with the height adjustable from 1m to 1.5m and is arranged in the middle of the two wire fixing and supporting parts (1).
7. The platform of claim 1 for detecting defects in a distribution insulator and its surrounding electrical insulation system, wherein: the bottom of the insulator fixed supporting part (4) is of a tripod structure, and a telescopic insulator fixed supporting part height-adjustable part (5) is vertically and fixedly connected to the middle part of the tripod upwards, so that the whole height of the insulating fixed supporting part is 1m-1.5 m.
8. The platform of claim 7 for detecting defects in a distribution insulator and its surrounding electrical insulation system, wherein: a groove is formed in the top end of the height-adjustable part (5) of the insulator fixing and supporting part, so that the bottom of the upper supporting part of the V-shaped structure is just inserted into the reserved groove; two ends of the upper part of the V-shaped structure at the upper part of the upper supporting part are welded on the cross arm (6); a round hole (13) is reserved on the upward surface of the cross arm (6) and is connected with a bolt at the lower part of the replaceable test insulator (7) through a screw; the replaceable test insulator (7) is connected with the test lead (3) through a binding wire.
9. The platform of claim 1 for detecting defects in a distribution insulator and its surrounding electrical insulation system, wherein: the bottom support of the ultrahigh frequency sensor fixing and supporting part (8) is of a tripod structure, the upper part of the ultrahigh frequency sensor fixing and supporting part (8) is connected with a supporting table (14), and an ultrahigh frequency sensor (9) is arranged on the supporting table (14); the ultrahigh frequency sensor (9) is right opposite to the position of the replaceable test insulator (7) and is 2-5m away from the insulator fixed supporting part (4).
10. The platform of claim 1 for detecting defects in a distribution insulator and its surrounding electrical insulation system, wherein: the ultrahigh frequency sensor fixing and supporting part (10) is arranged on one side far away from the ultrahigh frequency sensor fixing and supporting part (8), the bottom of the ultraviolet imager fixing and supporting part (10) is of a tripod structure, the upper part of the ultraviolet imager fixing and supporting part (10) is connected with a supporting table, and an ultraviolet imager (11) is arranged on the supporting table; the ultraviolet imager (11) is opposite to the position of the replaceable test insulator (7), and the distance between the ultraviolet imager and the insulator fixing and supporting part (4) is 2m-5 m.
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