CN203826910U - A 10KV distribution transformer pillar type puncture grounding composite zinc oxide lightning arrester - Google Patents

A 10KV distribution transformer pillar type puncture grounding composite zinc oxide lightning arrester Download PDF

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Publication number
CN203826910U
CN203826910U CN201420224617.7U CN201420224617U CN203826910U CN 203826910 U CN203826910 U CN 203826910U CN 201420224617 U CN201420224617 U CN 201420224617U CN 203826910 U CN203826910 U CN 203826910U
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China
Prior art keywords
lightning arrester
puncture
zinc oxide
support type
column support
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Active
Application number
CN201420224617.7U
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Chinese (zh)
Inventor
徐建凯
蔡金明
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
Huzhou Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
Deqing Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
Original Assignee
State Grid Corp of China SGCC
Huzhou Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
Deqing Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
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Application filed by State Grid Corp of China SGCC, Huzhou Power Supply Co of State Grid Zhejiang Electric Power Co Ltd, Deqing Power Supply Co of State Grid Zhejiang Electric Power Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN201420224617.7U priority Critical patent/CN203826910U/en
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Publication of CN203826910U publication Critical patent/CN203826910U/en
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Abstract

The utility model discloses a 10KV distribution transformer pillar type puncture grounding composite zinc oxide lightning arrester. High voltage lines of a 10KV distribution transformer are lead out from a voltage transformer, go through pillar type lightning arresters and then are connected to line connectors. A plate-shaped connection iron is installed on the top end of each pillar type lightning arrester through a screw bolt; a puncture wire clamp is fixed on one end of the connection iron; a grounding screw is vertically fixed on the end, opposite to the puncture wire clamp, of the connection iron; in construction installation, an insulation downlead goes through the puncture wire clamp so as to be in electrical connection with the pillar type lightning arrester through the puncture wire clamp; and a ground wire is arranged on the grounding screw in a suspension mode so as to realize grounding protection. The 10KV distribution transformer pillar type puncture grounding composite zinc oxide lightning arrester can simultaneously realize a grounding function, a pillar function and a lightning arrester function, and reach purposes of simplifying installation, improving electrical safety performance, reducing unkeep power failure time, raising power supply reliability and reducing operation costs.

Description

A kind of 10kV distribution transforming column support type puncture ground connection composite zinc oxide lightning arrester
Technical field
The utility model relates to lightning arrester.
Background technology
Lightning arrester is for the protection of middle voltage distribution networks circuit and equipment, to avoid the important protection equipment of atmospheric over-voltage and switching overvoltage infringement, and that extensively uses at present mostly is alternating current gapless metal oxide arrester.
Wherein, column support type lightning arrester, has the advantages such as little, lightweight, the easy installation of volume, resistant sudden strain of a muscle.Statistical analysis, is used after column support type lightning arrester, and construction and installation speed has obtained certain raising, and interruption duration has obtained shortening.But in O&M maintenance process, find this device existent defect: under the terminal crane power-off condition of power distribution station, hanging earthing conductor is convenient not, the operation of distribution transforming interruption maintenance, need be on high-tension line hanging earthing conductor.Expand like this power failure range, be unfavorable for the raising of power supply reliability and good service level.And attempt on high pressure downlead, directly installing ground loop additional, but consider that earth connection is heavier, downlead is thinner, and the mechanical strength of insulated conductor is inadequate, can make crane pile crown loosening after being dismounted for multiple times earth connection, causes potential safety hazard.
Utility model content
Technical problem to be solved in the utility model has just been to provide a kind of 10kV distribution transforming column support type puncture ground connection composite zinc oxide lightning arrester, facilitate distribution transforming interruption maintenance to hang the requirement of earth connection, and insulation downlead is directly through penetrating cable clamp, needn't cut-off, reach to simplify and install, increase electrical safety performance, and reduce maintenance interruption duration, improve the object of power supply reliability.
For solving the problems of the technologies described above, the utility model adopts following technical scheme: a kind of 10kV distribution transforming column support type puncture ground connection composite zinc oxide lightning arrester, the high-voltage line of 10kV distribution transforming is drawn through column support type lightning arrester and connects crane from transformer, the top of described column support type lightning arrester is provided with a tabular connection iron by bolt, one end of described connection iron is fixed with penetrating cable clamp, described connection iron is vertically fixed with grounding screw rod in the opposite end of penetrating cable clamp, when construction and installation, insulation downlead is through penetrating cable clamp, by penetrating cable clamp and this column support type lightning arrester, form electrical connection, on grounding screw rod, hang earth connection and be grounded protection.
Preferably, on described grounding screw rod, be socketed with insulating sleeve.
Preferably, be hinged with a protective cover that penetrating cable clamp and grounding screw rod are covered on described connection iron, described protective cover is provided with the operating head for insulating bar hook.
Preferably, described penetrating cable clamp comprises the wire clip body being secured by bolts on connection iron, and described wire clip body top is provided with semicircular groove, and described wire clip body top is provided with puncture body, and respective slot position, described puncture body bottom is provided with puncture.
The utility model improves on the architecture basics of original column support type lightning arrester, on the top connection iron of column support type lightning arrester, be fixed with penetrating cable clamp and grounding screw rod simultaneously, after architecture advances, the downlead that insulate when construction and installation needn't disconnect, insulation downlead can directly pass penetrating cable clamp, forms electrical connection, simultaneously by penetrating cable clamp and lightning arrester body, be fixed on separately the grounding screw rod connecting on the iron other end, while having realized distribution transforming interruption maintenance, hang the requirement of earth connection.Thereby accomplish to meet grounding function, pillar function, lightning arrester function simultaneously, and reach simplification installation, increase electrical safety performance, reduce maintenance interruption duration, raising power supply reliability, the object of reduction O&M cost.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is further described:
Fig. 1 is the mounting structure schematic diagram of column support type lightning arrester;
Fig. 2 is A place enlarged drawing in Fig. 1;
Fig. 3 is the structural representation of column support type lightning arrester.
Embodiment
First, in conjunction with Fig. 1 to Fig. 3, illustrate this 10kV distribution transforming column support type puncture ground connection composite zinc oxide lightning arrester, the high-voltage line of 10kV distribution transforming is drawn through column support type lightning arrester 1 and connects crane 2 from transformer 3, described column support type lightning arrester 1 comprises body 11, body 11 includes core body and at the insulating cylinder of core body outer encapsulating, insulating cylinder outside is the silicon rubber composite sheath of sulfidization molding once.The top of described column support type lightning arrester 1 is provided with a tabular connection iron by bolt; one end of described connection iron is fixed with penetrating cable clamp 12; described connection iron is vertically fixed with grounding screw rod 13 in the opposite end of penetrating cable clamp; when construction and installation; insulation downlead is through penetrating cable clamp 12; by penetrating cable clamp and this column support type lightning arrester 1, form electrical connection, on grounding screw rod 13, hang earth connection and be grounded protection.
On described grounding screw rod, be socketed with insulating sleeve.On described connection iron, be hinged with a protective cover that penetrating cable clamp and grounding screw rod are covered, described protective cover is provided with the operating head for insulating bar hook, by insulating bar, protective cover is opened or is closed.
Described penetrating cable clamp comprises the wire clip body 120 being secured by bolts on connection iron, and described wire clip body top is provided with semicircular groove, and described wire clip body top is provided with puncture body 121, and respective slot position, described puncture body bottom is provided with puncture.
During distribution transforming interruption maintenance, insulation downlead can directly pass penetrating cable clamp, by penetrating cable clamp and lightning arrester body, forms electrical connection.In addition, because grounding screw rod is fixed on separately, connect on iron, can guarantee to hang the required mechanical strength of earth connection.
The utility model integrates post insulator, penetrating cable clamp, ground loop, lightning arrester function, and its structure has been simplified device type on the bar of power distribution station greatly.Operating experience shows, this distribution transforming column support type puncture ground connection composite zinc oxide lightning arrester can stand the multiple boisterous tests such as thunder and lightning, high temperature, heavy rain, typhoon, dense fog, low temperature.In equipment fault statistics, the failure rate is low of this distribution transforming lightning arrester, in common zinc oxide lightning arrester, is tried out and has been reached satisfied effect.
Adopt the beneficial effect after the utility model:
(1) remarkable to distribution transforming lightning protection effect
Data statistics shows; after promoting the use of distribution transforming column support type puncture ground connection composite zinc oxide lightning arrester; distribution transforming broken by lightning rate is downward trend year by year; illustrate that this novel distribution transforming lightning arrester not only realized pillar insulation function, grounding function; and effectively protected transformer, reduce the number of times that distribution transforming is subject to broken by lightning.
(2) shorten the set-up time, improve efficiency of construction analysis
By company's annual 300Ge Tai district's increase-volume calculating of layouting, compare independent mounting column insulator, lightning arrester, ground loop, each district at least saves man-hour half an hour, supposes that each district's construction need to arrange 6 skilled workers, 4 unskilled labourers.Can save man-hour every year: 300*0.5* (6+4)=1500 man-hour.
(3) reduce amount while having a power failure, improve power supply reliability analysis
A, by company's annual 300Ge Tai district's increase-volume calculating of layouting, each district at least saves half an hour, supposes that each district's construction on average stops 5 users, amount in the time of amount in the time of can saving every year: 300*0.5*5=750.
There are 3455 power distribution stations in b, at present full company, have adopted this column support type lightning arrester to carry out standardization transformation Tai district and have accounted for 60%.Suppose the average 2 years interruption maintenances in power distribution station once, have a power failure 2 hours at every turn.If this distribution transforming lightning arrester is not installed, distribution transforming maintenance need to have a power failure to high pressure branch line, ground connection, on average need to stop 5 users, adopts distribution transforming lightning arrester to carry out after the standardization transformation of platform district, each distribution transforming maintenance only need be pulled open distribution transformer terminals crane, and customer interrupted number is 1.Amount in the time of amount in the time of can saving every year: 3455*60%*0.5*2* (5-1)=8292, has effectively improved power supply reliability.

Claims (4)

1. 10kV distribution transforming column support type puncture ground connection composite zinc oxide lightning arrester, the high-voltage line of 10kV distribution transforming is drawn through column support type lightning arrester (1) and connects crane (2) from transformer (3), it is characterized in that: the top of described column support type lightning arrester (1) is provided with a tabular connection iron by bolt, one end of described connection iron is fixed with penetrating cable clamp (12), described connection iron is vertically fixed with grounding screw rod (13) in the opposite end of penetrating cable clamp, when construction and installation, insulation downlead is through penetrating cable clamp (12), by penetrating cable clamp and this column support type lightning arrester (1), form electrical connection, on grounding screw rod (13), hang earth connection and be grounded protection.
2. a kind of 10kV distribution transforming column support type puncture ground connection composite zinc oxide lightning arrester according to claim 1, is characterized in that: on described grounding screw rod, be socketed with insulating sleeve.
3. a kind of 10kV distribution transforming column support type puncture ground connection composite zinc oxide lightning arrester according to claim 2, it is characterized in that: on described connection iron, be hinged with a protective cover that penetrating cable clamp and grounding screw rod are covered, described protective cover is provided with the operating head for insulating bar hook.
4. a kind of 10kV distribution transforming column support type puncture ground connection composite zinc oxide lightning arrester according to claim 1, it is characterized in that: described penetrating cable clamp comprises the wire clip body (120) being secured by bolts on connection iron, described wire clip body top is provided with semicircular groove, described wire clip body top is provided with puncture body (121), and respective slot position, described puncture body bottom is provided with puncture.
CN201420224617.7U 2014-05-05 2014-05-05 A 10KV distribution transformer pillar type puncture grounding composite zinc oxide lightning arrester Active CN203826910U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420224617.7U CN203826910U (en) 2014-05-05 2014-05-05 A 10KV distribution transformer pillar type puncture grounding composite zinc oxide lightning arrester

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420224617.7U CN203826910U (en) 2014-05-05 2014-05-05 A 10KV distribution transformer pillar type puncture grounding composite zinc oxide lightning arrester

Publications (1)

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CN203826910U true CN203826910U (en) 2014-09-10

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107610853A (en) * 2017-08-08 2018-01-19 芜湖市凯鑫避雷器有限责任公司 A kind of arrester with rock-steady structure and protective capacities

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107610853A (en) * 2017-08-08 2018-01-19 芜湖市凯鑫避雷器有限责任公司 A kind of arrester with rock-steady structure and protective capacities

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