CN114062864A - GIS insulation defect simulation experiment device adaptive to different voltage grades of power distribution network - Google Patents
GIS insulation defect simulation experiment device adaptive to different voltage grades of power distribution network Download PDFInfo
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- CN114062864A CN114062864A CN202111333873.0A CN202111333873A CN114062864A CN 114062864 A CN114062864 A CN 114062864A CN 202111333873 A CN202111333873 A CN 202111333873A CN 114062864 A CN114062864 A CN 114062864A
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- conductor
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- distribution network
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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
- G01R31/1227—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
- G01R31/1263—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 solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
- G01R31/1272—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 solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation of cable, line or wire insulation, e.g. using partial discharge measurements
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- 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
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
-
- 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
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/086—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution networks, i.e. with interconnected conductors
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Relating To Insulation (AREA)
Abstract
The invention relates to a GIS insulation defect simulation experiment device adaptive to different voltage grades of a power distribution network, which is of a vertical structure and sequentially comprises the following components from top to bottom: insulating sleeve: insulation and support for equipment; an upper shell body: the surface of the insulating sleeve is respectively provided with an observation window for observing and recording experimental phenomena and an upper inflation inlet for internal inflation and deflation; connecting a sleeve pipe: the device is used for replacing the insulating sleeve to perform insulating defect simulation tests under different voltage levels; disc insulator: the fixing support is used for testing the conductor rod and the conductor connecting piece; a lower housing: used for protection and support, and is provided with a lower inflation inlet for internal inflation and deflation. Compared with the prior art, the invention has the advantages of being suitable for different voltage grades, diversified, convenient and fast, suitable for experiments in small space and the like.
Description
Technical Field
The invention relates to the technical field of GIS insulation defect simulation experiments, in particular to a GIS insulation defect simulation experiment device with a replaceable sleeve adaptive to different voltage grades of a power distribution network.
Background
GIS equipment appears the poor, big scheduling problem of assembly error of workshop cleanliness easily when production for metal particles, powder or other debris remain inside GIS, lead to the trouble to take place. The method has the advantages that the insulation failure evolution rule of the GIS under different defects is researched, and the method has important significance on the structural design, operation and maintenance of the GIS. In order to realize GIS insulation failure simulation experiments under different defects, a GIS insulation defect simulation experiment device needs to be designed so as to observe and record the discharge condition of the GIS under the insulation defect state and search the characteristic quantity of the GIS insulation defect evolution process.
The existing GIS simulation experiment device usually uses a 110kV or 220kV GIS structure and parts. Because 110kV, 220 kV's insulating sleeve is too big, the simulation experiment device that sets up the completion need be gone on in large-scale laboratory usually, and can only accomplish the experiment of discharging of a type, and the experiment content is single, has the equipment volume too big, the experiment conductor change difficulty scheduling problem, is difficult to carry out the simulation experiment in small-size laboratory.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a GIS insulation defect simulation experiment device suitable for different voltage grades of a power distribution network.
The purpose of the invention can be realized by the following technical scheme:
the utility model provides a GIS insulation defect simulation experiment device in distribution network different voltage classes, the device is vertical structure, includes from last to down in proper order:
insulating sleeve: insulation and protection for equipment;
an upper shell body: the device is used for connecting and supporting the sleeve insulation, and is respectively provided with an observation window for observing and recording experimental phenomena and an upper inflation inlet for internal inflation and deflation;
disc insulator: the fixing support is used for testing the conductor rod and the conductor connecting piece;
a lower housing: used for protection and support, and is provided with a lower inflation inlet for internal inflation and deflation.
The insulating sleeve comprises a 35kV insulating sleeve and a 110kV insulating sleeve according to the voltage class.
When the insulating sleeve is a 35kV insulating sleeve, the 35kV insulating sleeve is fixedly and hermetically connected with the upper shell through the sleeve connecting plate, and when the insulating sleeve is a 110kV insulating sleeve, the 110kV insulating sleeve is directly and fixedly and hermetically connected with the upper shell, so that insulation defect simulation tests under different voltage levels are performed.
The bushing plate is a disc-shaped connecting plate with a central hole, a plurality of 35kV insulating sleeve mounting screw holes for being connected with 35kV insulating sleeves through bolts are formed in the periphery of the central hole of the disc-shaped connecting plate, a plurality of upper shell mounting screw holes for being connected with an upper shell through bolts are formed in the outer edge of the disc-shaped connecting plate, and a sealing ring mounting groove for placing a sealing ring is further formed in the disc-shaped connecting plate.
And sealing grooves are formed in the joints between the disc insulator and the upper shell and between the disc insulator and the lower shell, and sealing rings are arranged in the sealing grooves for sealing so as to realize the simulation of a high-pressure environment by inflation.
The disc insulator is connected with the upper shell and the lower shell through threads respectively, and waterproof glue injection is carried out at the screw hole, so that the overall supporting strength, the sealing performance and the waterproofness are guaranteed.
The gas charged and discharged into the experimental device through the upper inflation inlet and the lower inflation inlet is air or SF6A gas.
When the insulating sleeve is a 35kV insulating sleeve, the lower end of a 35kV conductor rod arranged in the 35kV insulating sleeve is connected with the upper end face of the central conductor of the disc insulator through a conductor connecting piece, and the tail end conductor is also connected with the lower end face of the central conductor of the disc insulator through a conductor connecting piece.
When the insulating sleeve is a 110kV insulating sleeve, the lower end of a 110kV conductor rod arranged in the 110kV insulating sleeve is connected with the upper end face of the central conductor of the disc insulator through a conductor connecting piece, and the tail end conductor is also connected with the lower end face of the central conductor of the disc insulator through a conductor connecting piece.
The disc insulator is an insulator except for the center conductor, and the inner cavity of the upper shell and the inner cavity of the lower shell are ensured to be insulated from each other.
Compared with the prior art, the invention has the following advantages:
firstly, the invention can respectively carry out 110kVGIS insulation defect simulation experiment in a large-scale laboratory and 35kV simulation experiment in a small-scale laboratory through the bushing plate, thereby improving the convenience of the GIS insulation defect simulation experiment.
The invention can connect different experimental conductors through the conductor connecting piece so as to carry out GIS insulation defect simulation experiments of different types and improve the diversity of the experiments.
And thirdly, the device is integrally designed into a vertical structure so as to be convenient for installation and fixation in a laboratory.
And fourthly, an observation window is arranged at the end close to the disc type insulator of the upper shell of the device, so that experimental personnel can observe, collect and record experimental data on site.
Drawings
Fig. 1 is a left overall structure diagram and a cross-sectional view of a 110kVGIS simulation experiment apparatus, wherein fig. 1a is an overall structure diagram, and fig. 1b is a partial cross-sectional view of fig. 1 a.
Fig. 2 is an overall structure diagram of a 35kVGIS simulation experiment apparatus and a sectional view thereof, wherein fig. 2a is an overall structure diagram and fig. 2b is a sectional view.
Fig. 3 is a schematic diagram of a bushing plate of the experimental simulation apparatus.
Fig. 4 is a schematic view of a conductor connector of the experimental simulation apparatus.
FIG. 5 is a right-view overall structure and a cross-sectional view of a 110kVGIS simulation experiment device.
The notation in the figure is:
100. 35kV insulation support, 110kV insulation support, 120 kV insulation support, bushing connection plate, 121 kV upper shell mounting screw hole, 122 kV insulation support mounting screw hole, 123 kV seal ring mounting groove, 130 kV upper shell, 131 kV observation window, 132 kV upper charging port, 140 kV disc insulator, 150 kV lower shell, 151 kV lower charging port, 160 kV conductor connecting piece, 170 kV 110kV conductor pole, 180 kV end conductor, 190 kV 35kV conductor pole.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments.
Examples
The invention provides a GIS insulation defect simulation experiment device with a replaceable sleeve adaptive to different voltage grades of a power distribution network, as shown in figure 1, comprising:
insulating sleeve: the insulating and supporting device is used for insulating and supporting equipment and comprises a 35kV insulating sleeve 100 and a 110kV insulating sleeve 110 according to different voltage grades of a power distribution network;
the bushing plate 120: the insulating sleeves are used for connecting and replacing different voltage grades;
the upper case 130: the device is used for protecting and supporting the experimental device, the observation window 131 is arranged on the device and is convenient for observing and recording experimental phenomena, and the upper inflation inlet 132 is convenient for inflation and deflation in the device;
disc insulator 140: a fixed support for the conductor and conductor connector 160;
the lower case 150: the lower inflation inlet 151 is arranged on the experimental device and is used for inflation and deflation in the equipment;
insulation support, bushing plate 120, go up casing 130, lower casing 150, disc insulator 140, conductor connecting piece 160 and conductor pole constitute GIS insulation defect simulation experiment device jointly, the device is seal structure, can aerify the simulation that realizes high voltage environment, insulation support 110 and the face of connecting of last casing 130, disc insulator 140 has all seted up the seal groove with the face of connecting of last casing 130 and lower casing 150 respectively, and the installation sealing washer realizes sealedly, after the equipment is accomplished, through last casing 130, the last gas charge mouth 132 and the lower gas charge mouth 151 that lower casing 150 seted up are to the inside air inflation of device or SF6 gas, with the inside high voltage environment of realization device, the device is whole to vertical structure, and the space is saved, and the loading and unloading of being convenient for, improve the convenience of GIS insulation defect simulation experiment.
As shown in fig. 2, the bushing connecting plate 120 is used for connecting the insulating bushing and the upper housing 130, the 110kV insulating bushing 110 used in the 110kV voltage class GIS insulating defect simulation experiment is adapted to the upper housing 130, the bushing connecting plate 120 does not need to be connected, the overall volume of the device is large, and the experiment can be performed in a large-scale high-voltage laboratory; the sizes of the 35kV insulating sleeve 100 and the upper shell 130 adopted in the 35kV voltage grade GIS insulation defect simulation experiment are not matched, and the 35kV insulating sleeve 100 and the upper shell 130 need to be connected through the sleeve connecting plate 120. The bushing connection plate 120 is provided with threads for connecting the upper housing 130 and the 35kV insulating bushing 100; still be equipped with the seal groove on the bushing plate 120, the installation sealing washer realizes the sealed of device, through the removable sleeve pipe of different voltage classes of bushing plate 120 for the device is applicable in big, small-size laboratory.
As shown in fig. 3, the conductor connecting member 160 is used to connect the 110kV conductor bar 170, the 35kV conductor bar 190, the end conductor 180 or other experimental conductors, the experimental conductor can be replaced by an experimenter according to the experimental requirement, and the conductor connecting member 160 is connected with the experimental conductor by screw threads, so as to ensure the stability of the connection structure.
During testing, the 110kV conductor bar 170 or the 35kV conductor bar 190 to be tested and observed are respectively and fixedly installed in the device corresponding to the voltage class, the inside of the device is inflated to a set air pressure (2-3 atmospheric pressures) through the upper inflation inlet 132 and the lower inflation inlet 151 respectively after seal verification is performed, the experimental phenomenon is observed and recorded through the observation window 131 after the conductor bar to be tested is electrified, and experimental related data can be acquired through instruments such as an infrared detector and the like arranged at the observation window 131.
Claims (10)
1. The utility model provides a GIS insulation defect simulation experiment device in distribution network different voltage classes which characterized in that, the device are vertical structure, include from last to down in proper order:
insulating sleeve: insulation and protection for equipment;
upper case (130): the upper part of the connecting and supporting sleeve is provided with an observation window (131) for observing and recording experimental phenomena and an upper inflation inlet (132) for internal inflation and deflation;
disc insulator (140): a fixed support for the experimental conductor bar and the conductor connector (160);
a lower case (150): used for protection and support, and is provided with a lower inflation inlet (151) for internal inflation and deflation.
2. The GIS insulation defect simulation experiment device suitable for different voltage classes of a power distribution network according to claim 1, wherein the insulation sleeve comprises a 35kV insulation sleeve (100) and a 110kV insulation sleeve (110) according to the voltage class.
3. The GIS insulation defect simulation experiment device suitable for different voltage grades of a power distribution network according to claim 2, wherein when the insulation sleeve is a 35kV insulation sleeve (100), the 35kV insulation sleeve (100) is fixedly and hermetically connected with the upper shell (130) through a sleeve connecting plate (120), and when the insulation sleeve is a 110kV insulation sleeve (110), the 110kV insulation sleeve (110) is directly and fixedly and hermetically connected with the upper shell (130), so that insulation defect simulation experiments under different voltage grades are performed.
4. The GIS insulation defect simulation experiment device suitable for different voltage classes of a power distribution network as claimed in claim 3, wherein the bushing plate (120) is a disk-shaped connecting plate with a central opening, a plurality of 35kV insulation bushing mounting screw holes (122) for connecting with 35kV insulation bushings (100) through bolts are formed around the central opening of the disk-shaped connecting plate, a plurality of upper housing mounting screw holes (121) for connecting with upper housings (130) through bolts are formed in the outer edge of the disk-shaped connecting plate, and a sealing ring mounting groove (123) for placing a sealing ring is further formed in the disk-shaped connecting plate.
5. The GIS insulation defect simulation experiment device suitable for the different voltage grades of the power distribution network as claimed in claim 4, wherein sealing grooves are formed in the joints between the disc insulator (140) and the upper shell (130) and between the disc insulator (140) and the lower shell (150), and sealing rings are arranged in the sealing grooves for sealing so as to realize simulation of a high-voltage environment through inflation.
6. The GIS insulation defect simulation experiment device suitable for different voltage grades of a power distribution network as claimed in claim 1, wherein the disc insulator (140) is respectively connected with the upper shell (130) and the lower shell (150) through threads, and waterproof glue injection is performed at screw holes so as to ensure the overall supporting strength, the sealing performance and the waterproofness.
7. The GIS insulation defect simulation experiment device suitable for different voltage grades of a power distribution network as claimed in claim 1, wherein the gas charged and discharged into the experiment device through the upper inflation inlet (132) and the lower inflation inlet (151) is air or SF6A gas.
8. The GIS insulation defect simulation experiment device suitable for different voltage classes of a power distribution network according to claim 3, wherein when the insulation sleeve is a 35kV insulation sleeve (100), the lower end of a 35kV conductor rod (190) arranged in the 35kV insulation sleeve (100) is connected with the upper end face of the central conductor of the disc insulator (140) through a conductor connecting piece (160), and the tail end conductor (180) is also connected with the lower end face of the central conductor of the disc insulator (140) through the conductor connecting piece (160).
9. The GIS insulation defect simulation experiment device suitable for different voltage classes of a power distribution network according to claim 3, wherein when the insulating sleeve is a 110kV insulating sleeve (110), the lower end of a 110kV conductor rod (170) arranged in the 110kV insulating sleeve (110) is connected with the upper end face of the central conductor of the disc insulator (140) through a conductor connecting piece (160), and the tail end conductor (180) is also connected with the lower end face of the central conductor of the disc insulator (140) through the conductor connecting piece (160).
10. The GIS insulation defect simulation experiment device suitable for different voltage grades of a power distribution network according to claim 8 or 9, wherein the upper shell (130) and the lower shell (150) are both metal shells and are commonly grounded, and the disc insulator (140) is an insulator except for a center conductor, so that the inner cavity of the upper shell (130) and the inner cavity of the lower shell (150) are ensured to be insulated from each other.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111333873.0A CN114062864A (en) | 2021-11-11 | 2021-11-11 | GIS insulation defect simulation experiment device adaptive to different voltage grades of power distribution network |
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| CN202111333873.0A CN114062864A (en) | 2021-11-11 | 2021-11-11 | GIS insulation defect simulation experiment device adaptive to different voltage grades of power distribution network |
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