CN105929314B - A kind of extra-high voltage transformer partial discharge test grading ring hanging apparatus - Google Patents

A kind of extra-high voltage transformer partial discharge test grading ring hanging apparatus Download PDF

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Publication number
CN105929314B
CN105929314B CN201610381280.4A CN201610381280A CN105929314B CN 105929314 B CN105929314 B CN 105929314B CN 201610381280 A CN201610381280 A CN 201610381280A CN 105929314 B CN105929314 B CN 105929314B
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China
Prior art keywords
ring
grading ring
extra
high voltage
voltage transformer
Prior art date
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Application number
CN201610381280.4A
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Chinese (zh)
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CN105929314A (en
Inventor
赵军
刘宏亮
邢超
韩光
张建军
王卓然
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
State Grid Corp of China SGCC
Electric Power Research Institute of State Grid Hebei Electric Power Co Ltd
Hebei Electric Power Construction Adjustment Test Institute
Original Assignee
State Grid Corp of China SGCC
Electric Power Research Institute of State Grid Hebei Electric Power Co Ltd
Hebei Electric Power Construction Adjustment Test Institute
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Application filed by State Grid Corp of China SGCC, Electric Power Research Institute of State Grid Hebei Electric Power Co Ltd, Hebei Electric Power Construction Adjustment Test Institute filed Critical State Grid Corp of China SGCC
Priority to CN201610381280.4A priority Critical patent/CN105929314B/en
Publication of CN105929314A publication Critical patent/CN105929314A/en
Application granted granted Critical
Publication of CN105929314B publication Critical patent/CN105929314B/en
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Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/12Testing 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

Abstract

The invention discloses a kind of extra-high voltage transformer partial discharge test grading ring hanging apparatus, including the steel semicircular ring being enclosed on grading ring, the suspending hook being welded in steel semicircular ring, the connecting plate at steel semicircular ring both ends is set, it is arranged on the steel plate for connecting the connection screw thread hole of two steel semicircular rings, bolt in connection screw thread hole is set, the present invention can be improved the safety and efficiency of live extra-high voltage transformer partial discharge test grading ring installment work, effectively eliminate security risk that may be present in previous grading ring hoisting process, going on smoothly for test has been effectively ensured.

Description

A kind of extra-high voltage transformer partial discharge test grading ring hanging apparatus
Technical field
The present invention relates to a kind of extra-high voltage transformer partial discharge test grading ring hanging apparatus.
Background technique
With the iterative method of Guo Wang company extra-high voltage project, more and more ultra-high voltage transformer stations step into installation examination The peak period tested.Wherein, extra-high voltage transformer is the core equipment of extra-high voltage grid, peace of the installation quality to extra-high voltage transformer Full stable operation has a great impact.And partial discharge test can be found that inside transformer insulation whether there is or not disruptive discharge sources In the presence of, and can analyze the built-in electrical insulation region excessively high with the presence or absence of dielectric strength.Therefore, it is examined using partial discharge test It tests transformer installation quality and is very effective means.
At present when carrying out extra-high voltage transformer partial discharge test, extra-high voltage transformer high-pressure side is carrying out shelf depreciation Phase-to-ground voltage is higher (close to 1000kV) when test, to guarantee that high pressure line end does not occur due to electric field distortion guiding discharge in turn The case where normal assays signal judges is influenced, generally requires that large-scale grading ring is installed in bushing wire outlet part, to rise To the effect of uniform electric field.
At present in grading ring hoisting process, since ring diameter is larger, often high-altitude operation vehicle is difficult for people to be sent in grading ring What portion removed position to complete grading ring and bushing disconnects the work such as hanging bag.Therefore operating personnel is needed to get in grading ring entrance Portion's medium position go complete disconnect the work such as hanging bag, cause test safety and working efficiency it is low, or even influence test progress with And the debugging duration.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of convenient extra-high voltage transformer partial discharge tests of lifting Grading ring hanging apparatus.
The technical scheme is that
A kind of extra-high voltage transformer partial discharge test grading ring hanging apparatus comprising the steel being enclosed on grading ring Semicircular ring, the connecting plate that steel semicircular ring both ends are arranged in, is arranged in connecting plate the suspending hook being welded in steel semicircular ring It is upper to be used to connect the connection screw thread hole of two steel semicircular rings, the bolt being arranged in connection screw thread hole.
The suspending hook quantity is 3, and is uniformly arranged in steel semicircular ring.
The positive effect of the present invention are as follows: 1, the present invention be bolted using two steel semicircular rings, spiral shell can be passed through Bolt adjusts the installation site of two steel semicircular rings, is adapted to different size of extra-high voltage transformer test grading ring, and Lifting is convenient.2, suspending hook quantity is 3, and is uniformly arranged in steel semicircular ring, ensure that the stability of lifting.3, steel Semicircular ring fixing bolt processed can satisfy the needs of fixed force, and both ends are joined with bolts respectively when use, can jail Gu locking, on grading ring, hanging apparatus is no longer removed after being installed.4, after lifting grading ring in place, installation personnel can make Hanging ring is pulled out from suspension hook with general brake pull-rod, it is easy to operate.5, the present invention can be improved live extra-high voltage The safety and efficiency of Existing during Partial Discharge Test for Transformer grading ring installment work, effectively eliminating can in previous grading ring hoisting process Going on smoothly for test has been effectively ensured in security risk existing for energy.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention;
Fig. 2 is steel semicircular ring structural schematic diagram of the present invention;
Fig. 3 is curved plate attachment structure schematic diagram of the present invention;
Fig. 4 is connecting board structure schematic diagram of the present invention;
Fig. 5 is the installation structure diagram of the invention;
In the accompanying drawings, 1- curved plate, 5- connecting plate, 6- connection screw thread hole, 7- boss, 8- groove, 9- connecting hole, 11- Grading ring, 12- steel semicircular ring, 13- suspending hook, 16- bolt.
Specific embodiment
Below in conjunction with attached drawing, the present invention is further described in detail with embodiment:
As shown in Figs 1-4, the present invention includes the steel semicircular ring 12 being enclosed on grading ring 11, is welded on steel semicircular ring Suspending hook 13 on 12, is arranged on connecting plate 5 for connecting two the connecting plate 5 that 12 both ends of steel semicircular ring are arranged in The connection screw thread hole 6 of steel semicircular ring 12, the bolt 16 being arranged in connection screw thread hole 6, it is at present in the middle part of general grading ring and special The size of army cap bound fraction, respectively 550mm and 650mm are corresponded to P&V casing and ABB casing by high voltage transformer bushings, should The extra-high voltage transformer test grading ring of design matching 650mm size, the grading ring could be used that in 550mm size casing On, it is adapted to different size of extra-high voltage transformer test grading ring, and lift conveniently;Wherein 12 length of steel semicircular ring It is designed as 400mm, it can be made to have sufficient contact area with grading ring, guarantee has enough frictional force;The design rule of bolt 16 Lattice are 12mm, can satisfy the needs of fixed force, and both ends are joined with bolts respectively when use, can securely locking be existed On grading ring, hanging apparatus is no longer removed after being installed, and after lifting grading ring in place, general drawing is can be used in installation personnel Restrictor bar pulls out hanging ring from suspension hook.
The steel semicircular ring 12 is made of the connection of two or more curved plates 1, in 1 side of curved plate Equipped with boss 7, it is equipped with groove 8 corresponding with boss 7 in 1 another side of curved plate, is equipped with and uses on boss 7 and groove 8 In the connecting hole 9 of connection, connected with screw by connecting hole 9 when two curved plates 1 connect;It also is provided in 5 side of connecting plate Boss 7 is equipped with groove 8, equipped with the connecting hole 9 for connection on boss 7 and groove 8 and even in 5 other side of connecting plate Fishplate bar 5 is equipped with threaded hole 6, convex on connecting plate 5 then in two 12 both ends of steel semicircular ring connection connecting plates 5, connection Groove 8 on platform 7 and curved plate 1 is cooperatively connected, and the boss 7 on groove 8 and curved plate on connecting plate is cooperatively connected, so It is fixed by the connecting hole 9 on connecting plate and the connecting hole on curved plate 9 with screw afterwards, it thus can be according to grading ring Size adjusts the diameter of steel semicircular ring 12 to choose the curved plate 1 of different number, not only realizes the adjustable of hanging apparatus Property, and improve the stability of hanging apparatus.
The suspending hook 13 is welded on the position of 120 degree of difference in steel semicircular ring 12, and suspending hook uses specification For 10mm reinforcement welding in semicircular ring, solder joint is respectively to differ on 120 degree of positions, while semicircular ring thickness design is 10mm, it is ensured that while reinforced steel bar strength, ensure that the stability of lifting.

Claims (2)

1. a kind of extra-high voltage transformer partial discharge test grading ring hanging apparatus, it is characterised in that it includes being enclosed in grading ring (11) steel semicircular ring (12) on, is arranged in steel semicircular ring the suspending hook (13) being welded on steel semicircular ring (12) (12) connecting plate (5) at both ends, setting are on connecting plate (5) for connecting the connection screw thread hole of two steel semicircular rings (12) (6), the bolt (16) being arranged in connection screw thread hole (6);
The steel semicircular ring 12 is made of the connection of two or more curved plates 1, is equipped in 1 side of curved plate Boss 7 is equipped with groove 8 corresponding with boss 7 in 1 another side of curved plate, is equipped on boss 7 and groove 8 for connecting The connecting hole 9 connect is connected with screw by connecting hole 9 when two curved plates 1 connect.
2. a kind of extra-high voltage transformer partial discharge test grading ring hanging apparatus according to claim 1, feature exist It is 3 in suspending hook (13) quantity, and is uniformly arranged on steel semicircular ring (12).
CN201610381280.4A 2016-06-01 2016-06-01 A kind of extra-high voltage transformer partial discharge test grading ring hanging apparatus Active CN105929314B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610381280.4A CN105929314B (en) 2016-06-01 2016-06-01 A kind of extra-high voltage transformer partial discharge test grading ring hanging apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610381280.4A CN105929314B (en) 2016-06-01 2016-06-01 A kind of extra-high voltage transformer partial discharge test grading ring hanging apparatus

Publications (2)

Publication Number Publication Date
CN105929314A CN105929314A (en) 2016-09-07
CN105929314B true CN105929314B (en) 2019-01-25

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CN201610381280.4A Active CN105929314B (en) 2016-06-01 2016-06-01 A kind of extra-high voltage transformer partial discharge test grading ring hanging apparatus

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101236226A (en) * 2008-01-29 2008-08-06 国网武汉高压研究院 Ultrahigh voltage transmission lines hardware corona test method based on ultraviolet imagery technology
CN202120692U (en) * 2011-01-07 2012-01-18 宝鸡电建电力器材有限公司 Plug-in type equalizer ring
CN202870242U (en) * 2012-09-11 2013-04-10 青海电力科学试验研究院 A voltage-equalizing device used for partial discharge test of a converter transformer
CN103245804A (en) * 2013-04-02 2013-08-14 山西省电力公司电力科学研究院 Assembly type inflatable high-voltage equalizing ring
CN203224515U (en) * 2013-04-02 2013-10-02 山西省电力公司电力科学研究院 An inflation assembly type high-voltage grading ring
CN204302314U (en) * 2014-12-05 2015-04-29 内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司 Lightweight grading ring is used in a kind of high voltage electric equipment test
CN105317794A (en) * 2015-09-15 2016-02-10 国家电网公司 Fixing structure for extra ultra high voltage electric transmission and transformation equipment grading ring
CN205844459U (en) * 2016-06-01 2016-12-28 国网河北省电力公司电力科学研究院 A kind of extra-high voltage transformer partial discharge test grading ring hanging apparatus

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101236226A (en) * 2008-01-29 2008-08-06 国网武汉高压研究院 Ultrahigh voltage transmission lines hardware corona test method based on ultraviolet imagery technology
CN202120692U (en) * 2011-01-07 2012-01-18 宝鸡电建电力器材有限公司 Plug-in type equalizer ring
CN202870242U (en) * 2012-09-11 2013-04-10 青海电力科学试验研究院 A voltage-equalizing device used for partial discharge test of a converter transformer
CN103245804A (en) * 2013-04-02 2013-08-14 山西省电力公司电力科学研究院 Assembly type inflatable high-voltage equalizing ring
CN203224515U (en) * 2013-04-02 2013-10-02 山西省电力公司电力科学研究院 An inflation assembly type high-voltage grading ring
CN204302314U (en) * 2014-12-05 2015-04-29 内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司 Lightweight grading ring is used in a kind of high voltage electric equipment test
CN105317794A (en) * 2015-09-15 2016-02-10 国家电网公司 Fixing structure for extra ultra high voltage electric transmission and transformation equipment grading ring
CN205844459U (en) * 2016-06-01 2016-12-28 国网河北省电力公司电力科学研究院 A kind of extra-high voltage transformer partial discharge test grading ring hanging apparatus

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