CN203276980U - Isolation voltage adjustable insulator string used for electric power experiment and applied to lightning protection research - Google Patents

Isolation voltage adjustable insulator string used for electric power experiment and applied to lightning protection research Download PDF

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Publication number
CN203276980U
CN203276980U CN 201320221955 CN201320221955U CN203276980U CN 203276980 U CN203276980 U CN 203276980U CN 201320221955 CN201320221955 CN 201320221955 CN 201320221955 U CN201320221955 U CN 201320221955U CN 203276980 U CN203276980 U CN 203276980U
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CN
China
Prior art keywords
discharge cover
insulator string
lightning protection
electric power
bowl
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN 201320221955
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Chinese (zh)
Inventor
李建明
郭蓉萍
马啟潇
文丽
张榆
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State Grid Corp of China SGCC
Electric Power Research Institute of State Grid Sichuan Electric Power Co Ltd
Original Assignee
State Grid Corp of China SGCC
Electric Power Research Institute of State Grid Sichuan Electric Power Co Ltd
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Priority to CN 201320221955 priority Critical patent/CN203276980U/en
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Publication of CN203276980U publication Critical patent/CN203276980U/en
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Abstract

An isolation voltage adjustable insulator string used for an electric power experiment and applied to a lightning protection research is provided. An upper discharging cover is installed at an upper portion position of the insulator string, and the upper discharging cover is bowl-shaped with an opening downward and provided with a plurality of discharging needles uniformly distributed on the bowl edge; and a lower discharging cover is installed at a lower portion position of the insulator string, and the lower discharging cover is bowl-shaped with an opening upward and electrically connected with a ground wire through a wire. The isolation voltage adjustable insulator string is characterized by simple structure, ingenious design, good lightning protection effect, low production cost, and easy popularization and the like.

Description

A kind of adjustable insulation voltage electric power experiment insulator string that is applied to lightning protection research
Technical field
The utility model relates to the electric power transmission utensil, particularly has the electric power experiment insulator string of lightning protection function.
Background technology
From various countries' electrical network practical operation situation, thunderbolt remains the main harm of transmission line safe and reliable operation, and the ratio that the line tripping that is caused by thunderbolt accounts for the fault sum constantly rises.Japan and Sweden power system accident over half is all caused because transmission line is struck by lightning; Egypt also once had a power failure because the thunderbolt power main makes the whole nation; The transmission line of 3.27 ten thousand kilometers of the national overall lengths such as the former Soviet Union that international conference on large HV electric systems is announced, the U.S., 275-500kV electric pressure, continuous 3 years are in service, and the damage to crops caused by thunder accident reaches 60% of total accident.Transmission line is as the part of the most easily being struck by lightning in electrical network, and thunder and lightning occurs repeatedly by insulator string being punctured the transmission of electricity accident that causes.
In electric power transmission line, insulator string is arranged on electric force pole tower through its upper pendant, power transmission line is suspended on the lower pendant of insulator string flexibly, and power transmission line and electric force pole tower must keep insulation each other at any time, normally carry otherwise can affect electric power.
When the thunderstorm weather thunder and lightning occured, the powerful electric current of thunder and lightning may puncture insulator string, thereby makes short circuit between power transmission line and electric force pole tower, thereby caused the transmission of electricity accident.And existing insulator string does not have special lightning Protection Design.
The utility model content
The purpose of this utility model be to provide a kind of can the shielding insulation substring and thunder and lightning is imported underground a kind of adjustable insulation voltage electric power experiment insulator string with lightning protection function.
This novel purpose is achieved in that a kind of adjustable insulation voltage electric power experiment insulator string that is applied to lightning protection research, comprise insulator string, the discharge cover is installed on the insulator string upper position, and upper discharge cover is the bowl-type that Open Side Down, and the bowl along on be evenly equipped with a plurality of spray points; The insulator string bottom is equipped with lower discharge cover, and lower discharge cover is the bowl-type of opening upwards, and lower discharge cover is electrically connected to ground wire through wire.
The below of insulator string upper pendant shown in described upper discharge cover is adjacent to is above insulator string lower pendant shown in lower discharge cover is adjacent to.
Described lower discharge cover the bowl along on be evenly equipped with a plurality of spray points.
Described upper discharge cover is discharge cover or copper upper discharge cover on aluminium matter; Described lower discharge cover is discharge cover or copper lower discharge cover under aluminium matter.
Described upper discharge cover is electrically connected to shaft tower through wire.
The beneficial effects of the utility model are: upper discharge cover is designed to bowl-type (or cylindrical shape), it is with the whole cover caps of whole insulator string, thunder-strike current spray point on it can be discharged to lower discharge cover, and thunder-strike current is introduced underground by lower discharge cover, thereby avoided powerful lightning current directly to flow through insulator string and with its disadvantage that punctures, guaranteed electric power safety production.
The utlity model has simple in structure, be skillfully constructed, lightning protection effect is good, cost of manufacture is low, be easy to the characteristics such as popularization.
Description of drawings
Fig. 1 is structure chart of the present utility model.
Embodiment
Fig. 1 illustrates, and a kind of adjustable insulation voltage electric power experiment insulator string that is applied to lightning protection research is equipped with discharge cover 2 on insulator string 1 upper position, and upper discharge cover 2 is the bowl-type that Open Side Down, and bowl along on be evenly equipped with a plurality of spray points; Insulator string 1 bottom is equipped with lower discharge cover 3, and lower discharge cover 3 is the bowl-type of opening upwards, and lower discharge cover 3 is electrically connected to ground wire through wire.Power transmission line 4 flexible suspensions are on the lower pendant 1b of insulator string.Upper discharge cover 2 is discharge cover or copper upper discharge cover on aluminium matter, and lower discharge cover 3 is discharge cover or copper lower discharge cover under aluminium matter.Lower discharge cover 3 the bowl along on be evenly equipped with a plurality of spray points.Spray point on lower discharge cover and the corresponding setting of the spray point of upper discharge cover during thunderbolt, have between both electric arc 5 to produce.Below the contiguous insulator string 1 upper pendant 1a of upper discharge cover 2, above the contiguous insulator string 1 lower pendant 1b of lower discharge cover 3.Usually, upper discharge cover is arranged on upper pendant 1a lower end, and lower discharge cover is arranged on the lower pendant upper end.According to circumstances, also can consider upper discharge cover 2 is electrically connected to shaft tower through wire.

Claims (5)

1. an adjustable insulation voltage electric power that is applied to lightning protection research is tested insulator string, comprise, insulator string (1), it is characterized in that, on described insulator string (1) upper position, discharge cover (2) is installed, upper discharge cover (2) is the bowl-type that Open Side Down, and the bowl along on be evenly equipped with a plurality of spray points; Insulator string (1) bottom is equipped with lower discharge cover (3), and lower discharge cover (3) is the bowl-type of opening upwards, and lower discharge cover (3) is electrically connected to ground wire through wire.
2. a kind of adjustable insulation voltage electric power that is applied to lightning protection research according to claim 1 is tested insulator string, it is characterized in that, upper pendant (1a) below of the contiguous described insulator string of described upper discharge cover (2) (1), lower pendant (1b) top of the contiguous described insulator string of lower discharge cover (3) (1).
3. a kind of adjustable insulation voltage electric power experiment insulator string that is applied to lightning protection research according to claim 1 and 2, is characterized in that, the bowl of described lower discharge cover (3) along on be evenly equipped with a plurality of spray points.
4. a kind of adjustable insulation voltage electric power experiment insulator string that is applied to lightning protection research according to claim 3, is characterized in that, described upper discharge cover (2) is discharge cover or copper upper discharge cover on aluminium matter; Described lower discharge cover (3) is discharge cover or copper lower discharge cover under aluminium matter.
5. a kind of adjustable insulation voltage electric power experiment insulator string that is applied to lightning protection research according to claim 1, is characterized in that, described upper discharge cover (2) is electrically connected to shaft tower through wire.
CN 201320221955 2013-04-27 2013-04-27 Isolation voltage adjustable insulator string used for electric power experiment and applied to lightning protection research Active CN203276980U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201320221955 CN203276980U (en) 2013-04-27 2013-04-27 Isolation voltage adjustable insulator string used for electric power experiment and applied to lightning protection research

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201320221955 CN203276980U (en) 2013-04-27 2013-04-27 Isolation voltage adjustable insulator string used for electric power experiment and applied to lightning protection research

Publications (1)

Publication Number Publication Date
CN203276980U true CN203276980U (en) 2013-11-06

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201320221955 Active CN203276980U (en) 2013-04-27 2013-04-27 Isolation voltage adjustable insulator string used for electric power experiment and applied to lightning protection research

Country Status (1)

Country Link
CN (1) CN203276980U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103258604A (en) * 2013-04-27 2013-08-21 国家电网公司 Adjustable isolation voltage electric power test insulator chain applied to lightning-protecting study
CN104600570A (en) * 2015-02-05 2015-05-06 张立 Lightning arrester terminal

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103258604A (en) * 2013-04-27 2013-08-21 国家电网公司 Adjustable isolation voltage electric power test insulator chain applied to lightning-protecting study
CN104600570A (en) * 2015-02-05 2015-05-06 张立 Lightning arrester terminal

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