CN106290998A - A kind of extra-high voltage transformer partial discharge test lead's insulation support - Google Patents
A kind of extra-high voltage transformer partial discharge test lead's insulation support Download PDFInfo
- Publication number
- CN106290998A CN106290998A CN201610613231.9A CN201610613231A CN106290998A CN 106290998 A CN106290998 A CN 106290998A CN 201610613231 A CN201610613231 A CN 201610613231A CN 106290998 A CN106290998 A CN 106290998A
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- China
- Prior art keywords
- extra
- high voltage
- circular arc
- voltage transformer
- partial discharge
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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
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Relating To Insulation (AREA)
Abstract
The present invention relates to a kind of extra-high voltage transformer partial discharge test lead's insulation support, it includes lead bearing mechanism and the pole threadeded with lead bearing mechanism；Meet when carrying out test connection insulation and the requirement of safe distance in terms of test lead stringing, eliminate and avoid the interference signal introduced due to test lead supporting structure, improve safety and the efficiency of on-the-spot extra-high voltage transformer partial discharge test, instead of the drawback that conventional test lead cannot support and fix, being smoothed out of test has been effectively ensured.
Description
Technical field
Present invention relates particularly to a kind of extra-high voltage transformer partial discharge test lead's insulation support, for meeting at the scene
Carry out the demand of extra-high voltage transformer test lead supporting, prevent test lead in extra-high voltage transformer partial discharge test to be subject to weight
Power effect sag and windage yaw are relatively big, cause going between to electronegative potential position electric discharges such as equipment, thus affect extra-high voltage transformer test
Progress.Accordingly, it would be desirable to the lead's insulation support of a kind of potential safety hazard eliminated in test.
Background technology
Along with china natural resources environment and the contradiction of economic development, develop extra-high voltage electric transmission and transformation technology, build with
Extra-high voltage grid is the strong national grid of bulk transmission grid, it is achieved Large Copacity, long distance power transmission become a kind of inevitable inherence to be needed
Want.And the nucleus equipment of EHV power transformer this bulk transmission grid exactly, its safe and stable operation is related to whole
The safety and stability of extra-high voltage grid.The partial discharge test of EHV power transformer is to evaluate extra-high voltage transformer insulation simultaneously
The important indicator of situation quality.
At present when carrying out on-the-spot extra-high voltage transformer partial discharge test, test data precision prescribed is higher, for preventing
The external disturbance such as corona introduce pilot system, and test lead needs to use metal bellows, owing to extra-high voltage transformer volume is huge
Greatly, carry out test lead connect tested transformator when, test lead peripheral equipment or grounding body are had insulation away from
From requirement, go between just to couple together testing transformer and tested transformator simultaneously due to needs relatively long distance.Therefore, to gold
Belong to the length of corrugated tube and surrounding devices or grounding body distance are proposed requirement, and extra-high voltage transformer shelf depreciation examination at present
Test and often there is no reliable test lead insulating support, or test lead can be caused damage follow-up to make by portion support
With, affect extra-high voltage transformer partial discharge test safety and completion time of project.
Summary of the invention
It is an object of the invention to for problem present in above-mentioned on-the-spot test, and a kind of extra-high voltage transformer local is provided
Discharge test lead's insulation support, to eliminate potential potential safety hazard and to improve the purpose of work efficiency, it is achieved that test job letter
Folk prescription is just, it is ensured that smoothly completing of extra-high voltage transformer partial discharge test.
The present invention solves the technical scheme that its goal of the invention used:
A kind of extra-high voltage transformer partial discharge test lead's insulation support, it includes lead bearing mechanism and and lead bearing
The pole that mechanism is threaded；Described lead bearing mechanism includes two circular arc support plates be arrangeding in parallel, is positioned at two described circles
Multiple spacers between arc support plate and the fixing connecting plate connecting two described circular arc support plate lateral walls；Multiple described intervals
Post be arranged in parallel, and two ends are fixed with circular arc support plate adjacent surface respectively and are connected, and described connecting plate one end is solid with two circular arc support plates
Fixed connection, the other end is connected with pole by connecting plate screw；Described pole includes that multiple length is not the same from support rod structure
Becoming, described support rod one end is provided with screw rod, and the other end is provided with screw, and described support rod, screw rod and screw are coaxially disposed,
Described screw is blind hole, and described screw rod and screw are suitable, and described screw is identical with connecting plate screw；Described circular arc support plate,
Spacer post, connecting plate, support rod are all insulant.
Further, described connecting plate is positioned on the angular bisector of the corresponding central angle of circular arc support plate 1.
Further, described circular arc support plate correspondence central angle is 180 °.
Further, described interval column length 30mm.
Further, described insulant is epoxy resin.
Further, described insulant is nylon.
Further, the interior diameter of a circle along circular arc place of described circular arc support plate is 210mm.
Further, described circular arc support plate, spacer connect by nylon bolt is fixing.
The present invention can use three joint insulation supporter bars combinations to form different length, to adapt to the erection need of differing heights
Want.Three joint insulation supporter bar total lengths are 5m, can form tri-kinds of differing heights of 5m, 3m, 1.5m.Meet current extra-high voltage transformation
Device partial discharge test lead-in wire sets up and needs.
Extra-high voltage transformer partial discharge test tested main body low pressure side test voltage 173kV to be reached at present, often
Using diameter at the metal bellows of 150mm or 200mm, it is 10mm that inside passes to sectional area2The copper conductor of tape insulation crust,
Under gravity and mild wind effect, sag and windage yaw are bigger, and for ensureing that metal bellows can obtain effectively supporting, support rod top is tied
Structure inside diameter is designed as 210mm, so that two kinds of metal bellowss can enter groove and be fixed.
For ensureing insulating properties, considering the dielectric strength of supporting structure in design, selecting electrical strength is >=200kV/m
Epoxide resin material and nylon material.
For preventing tip, supporting structure edge from scratching metal bellows, supporting structure edge is carried out chamfered.Simultaneously
Nylon rod length is controlled at about 30mm, so that metal bellows and supporting structure have bigger contact area, effectively
Protect metal bellows.
Selecting nylon rod to connect in the middle part of the lead bearing structure of first joint insulation supporter bar, weight is only 2500g, is convenient for carrying
And use.
It is threaded that each joint insulating bar connecting portion is designed as epoxy resin, can avoid having when connecting for metal outstanding herein
Floating electric discharge, overcoming this kind affects the defect that test data judges.
The invention have the benefit that
The present invention can improve safety and the efficiency of on-the-spot extra-high voltage transformer partial discharge test, it is easy to accomplish extra-high voltage transformation
Device partial discharge test is to test lead insulation and the requirement of safe distance, and instead of conventional test lead cannot support and fix
Drawback, be effectively ensured test be smoothed out.
Accompanying drawing explanation
Fig. 1 is insulating support structural representation of the present invention；
Fig. 2 is insulating support side structure schematic diagram of the present invention；
Fig. 3 is the present invention exhausted supporting rod structure schematic diagram；
In the accompanying drawings: 1 circular arc support plate, 2 spacers, 3 connecting plates, 4 support rods, 41 screw rods, 42 screws.
Detailed description of the invention
Below in conjunction with accompanying drawing, 1,2,3 couples of present invention carry out further details of narration.
Embodiment one, as illustrated in the accompanying drawings from 1 to 3, a kind of extra-high voltage transformer partial discharge test lead's insulation support, its bag
Include lead bearing mechanism and the pole threadeded with lead bearing mechanism；Described lead bearing mechanism includes that two parallel set
The circular arc support plate 1 put, the multiple spacers 2 between two described circular arc support plates 1 and two described circular arcs of fixing connection
The connecting plate 3 of support plate 1 lateral wall；Multiple described spacers 2 be arranged in parallel, and two ends are fixed with circular arc support plate 1 adjacent surface respectively
Connecting, described connecting plate 3 one end is fixing with two circular arc support plates 1 to be connected, and the other end is connected with pole by connecting plate screw；Institute
Stating pole and include that multiple length is not the same from support rod 4 and constitutes, described support rod 4 one end is provided with screw rod 41, and the other end sets
Being equipped with screw 42, described support rod 4, screw rod 41 and screw 42 are coaxially disposed, and described screw 42 is blind hole, described screw rod 41 and spiral shell
Hole 42 is suitable, and described screw 42 is identical with connecting plate screw；Described circular arc support plate 1, spacer 2, connecting plate 3, support rod 4 are all
It it is insulant.
Connecting plate 3 is positioned on the angular bisector of the corresponding central angle of circular arc support plate 1；The corresponding central angle of described circular arc support plate 1 is
180°；The described long 30mm of spacer 2；Described insulant is epoxy resin.The interior circle along circular arc place of described circular arc support plate 1
Diameter be 210mm.
The support of the present invention generally Y type, all insulant, and two the circular arc support plates 1 contacted with wire body are used
Spacer 2 separates to be increased stress point and increases the spacing of two impetus, and multiple length are not the same from support rod 4 as required
Combination connects formation pole, forms different length to adapt to different needs.
Considerably increase the safety of use, add the reliability of equipment.
Embodiment two, is with embodiment one difference, insulant is nylon；Circular arc support plate 1, spacer 2 pass through
Nylon bolt is fixing to be connected.Nylon is ageing-resistant, and toughness is strong, smooth surface.
The above embodiment is only the preferred embodiments of the present invention, and and the feasible enforcement of non-invention exhaustive.Right
For persons skilled in the art, to its done any showing on the premise of without departing substantially from the principle of the invention and spirit
The change being clear to, within all should being contemplated as falling with the claims of the present invention.
Claims (8)
1. an extra-high voltage transformer partial discharge test lead's insulation support, it is characterised in that: it includes lead bearing mechanism
And the pole threadeded with lead bearing mechanism；
Described lead bearing mechanism includes two circular arc support plates (1) be arrangeding in parallel, is positioned between two described circular arc support plates (1)
Multiple spacers (2) and the fixing connecting plate (3) connecting two described circular arc support plate (1) lateral walls；Multiple described intervals
Post (2) be arranged in parallel, and two ends are fixed with circular arc support plate (1) adjacent surface respectively and are connected, described connecting plate (3) one end and two circles
Arc support plate (1) is fixing to be connected, and the other end is connected with pole by connecting plate screw；
Described pole includes that multiple length is not the same from support rod (4) and constitutes, and described support rod (4) one end is provided with screw rod
(41), the other end is provided with screw (42), and described support rod (4), screw rod (41) and screw (42) are coaxially disposed, described screw
(42) being blind hole, described screw rod (41) and screw (42) are suitable, and described screw (42) is identical with connecting plate screw；
Described circular arc support plate (1), spacer (2), connecting plate (3), support rod (4) are all insulant.
A kind of extra-high voltage transformer partial discharge test lead's insulation support the most according to claim 1, it is characterised in that:
Described connecting plate (3) is positioned on the angular bisector of the corresponding central angle of circular arc support plate (1).
A kind of extra-high voltage transformer partial discharge test lead's insulation support the most according to claim 1, it is characterised in that:
The corresponding central angle of described circular arc support plate (1) is 180 °.
A kind of extra-high voltage transformer partial discharge test lead's insulation support the most according to claim 1, it is characterised in that:
Described spacer (2) long 30mm.
5. according to a kind of extra-high voltage transformer partial discharge test lead's insulation support described in any one of claim 1-4, its
It is characterised by: described insulant is epoxy resin.
6. according to a kind of extra-high voltage transformer partial discharge test lead's insulation support described in any one of claim 1-4, its
It is characterised by: described insulant is nylon.
A kind of extra-high voltage transformer partial discharge test lead's insulation support the most according to claim 5, it is characterised in that:
The interior diameter of a circle along circular arc place of described circular arc support plate (1) is 210mm.
A kind of extra-high voltage transformer partial discharge test lead's insulation support the most according to claim 6, it is characterised in that:
Described circular arc support plate (1), spacer (2) connect by nylon bolt is fixing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610613231.9A CN106290998A (en) | 2016-07-29 | 2016-07-29 | A kind of extra-high voltage transformer partial discharge test lead's insulation support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610613231.9A CN106290998A (en) | 2016-07-29 | 2016-07-29 | A kind of extra-high voltage transformer partial discharge test lead's insulation support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106290998A true CN106290998A (en) | 2017-01-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610613231.9A Pending CN106290998A (en) | 2016-07-29 | 2016-07-29 | A kind of extra-high voltage transformer partial discharge test lead's insulation support |
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| Country | Link |
|---|---|
| CN (1) | CN106290998A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201188519Y (en) * | 2008-04-29 | 2009-01-28 | 济南供电公司 | Special support for maintaining 10KV overhead line |
| CN201522505U (en) * | 2009-09-28 | 2010-07-07 | 石家庄供电公司 | Lead connection tool for power equipment high-voltage test |
| CN201897604U (en) * | 2010-10-27 | 2011-07-13 | 河南省电力公司商丘供电公司 | High-voltage lead insulation bracket for high-voltage test |
| CN202339358U (en) * | 2011-11-29 | 2012-07-18 | 河北省电力建设调整试验所 | Test lead supporting device |
| CN103558420A (en) * | 2013-10-23 | 2014-02-05 | 刘伟华 | Primary current transmission test assist device for outdoor breaker |
| CN204575684U (en) * | 2015-04-30 | 2015-08-19 | 国网黑龙江省电力有限公司鹤岗供电公司 | Telescopic high-pressure test special isolation support bar |
-
2016
- 2016-07-29 CN CN201610613231.9A patent/CN106290998A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201188519Y (en) * | 2008-04-29 | 2009-01-28 | 济南供电公司 | Special support for maintaining 10KV overhead line |
| CN201522505U (en) * | 2009-09-28 | 2010-07-07 | 石家庄供电公司 | Lead connection tool for power equipment high-voltage test |
| CN201897604U (en) * | 2010-10-27 | 2011-07-13 | 河南省电力公司商丘供电公司 | High-voltage lead insulation bracket for high-voltage test |
| CN202339358U (en) * | 2011-11-29 | 2012-07-18 | 河北省电力建设调整试验所 | Test lead supporting device |
| CN103558420A (en) * | 2013-10-23 | 2014-02-05 | 刘伟华 | Primary current transmission test assist device for outdoor breaker |
| CN204575684U (en) * | 2015-04-30 | 2015-08-19 | 国网黑龙江省电力有限公司鹤岗供电公司 | Telescopic high-pressure test special isolation support bar |
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Application publication date: 20170104 |