CN201936711U - Novel lightning protection device for power transmission line - Google Patents
Novel lightning protection device for power transmission line Download PDFInfo
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- CN201936711U CN201936711U CN2010206182246U CN201020618224U CN201936711U CN 201936711 U CN201936711 U CN 201936711U CN 2010206182246 U CN2010206182246 U CN 2010206182246U CN 201020618224 U CN201020618224 U CN 201020618224U CN 201936711 U CN201936711 U CN 201936711U
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- protection device
- lightning protection
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Abstract
The utility model relates to a novel lightning protection device for a power transmission line, which comprises a high gradient line lightning arrester, a gap upper electrode, a gap lower electrode, a series air gap, a hardware tool and an attachment. Aiming at a lightning discharge accident which occurs frequently to the high voltage power transmission line, the novel lightning protection device for the power transmission line is designed. The novel lightning protection device for the power transmission line adopts a high gradient metallic oxide resistance chip. The high gradient resistance chip has the characteristics of excellent non linear property, high current flowing capacity, low residual voltage level, high response speed, no follow current and the like, particularly the potential gradient of the high gradient resistance chip is much higher than that of the common resistance chip. Due to the adoption of the high potential gradient resistance chip, the number of the resistance chips in the range of the unit height is reduced, so that the volume and the weight of the lightning protection device are reduced. The application of the high potential gradient resistance chip is beneficial for installation and application of the novel lightning protection device in the line. Meanwhile, a high gradient line lightning arrester body is matched with the series air gap, and thus, by the lightning protection device, not only can the lightning trip-out rate of the line be effectively reduced, but also an insulator can be protected from being damaged by lightning discharge, so that the lightning discharge problem of the power transmission line is effectively solved.
Description
Technical field:
The utility model relates to a kind of novel used for transmission line lightning protection device, is used to solve the lightning discharge accident that transmission line takes place frequently.
Background technology:
The lightning discharge of transmission line is one of problem that influences the line security operation always.Leakage conductor is installed is reduced or eliminated lightning outage rate, improve the stability of system.So far leakage conductor all has installation at distribution to the overhead transmission line of 500kV (part 800kV) system voltage, and is most of in Japan.Practical operation situation shows that when circuit is struck by lightning leakage conductor can prevent thunder and lightning direct attack caused fault of transmission line and the caused fault of thunderbolt transmission line effectively.Though the leakage conductor effect is pretty good, but owing to its application of following reason is subjected to very big influence: at first, the leakage conductor that uses all is that reference plant designs with lightning arrester at present, its selection of parameter is not quite reasonable, especially discharge capacity is chosen bigger than normal, cause the lightning arrester body volume bigger, be unsuitable for on-the-spot the installation; Secondly, leakage conductor adopts common zinc oxide valve plate, and it is highly very big, and weight is also very big, hundreds of easily kilograms, and on-the-spot installation is very inconvenient.
Summary of the invention:
The technical problems to be solved in the utility model overcomes the deficiency of above-mentioned technology exactly, and a kind of novel used for transmission line lightning protection device is provided.This novel lightning protection device volume is little, in light weight, be convenient to circuit installs and uses, and can effectively solve the lightning discharge problem of transmission line, improves the safety operation level of circuit.
The utility model makes full use of that the good non-line characteristic of high gradient resistor disc and through-current capacity are big, the residual voltage level is low, the response time fast and does not have characteristics such as afterflow, especially its electric potential gradient exceeds much than conventional, electric-resistance sheet, make the novel lightning protection device volume of being developed little, in light weight, be convenient to circuit and install and use, can effectively solve transmission line lightning stroke discharge problem.
A kind of novel used for transmission line lightning protection device that provides according to the utility model, comprise high gradient leakage conductor, gap top electrode, gap bottom electrode, series connection air gap, gold utensil and annex, it is characterized in that: described high gradient leakage conductor adopts the high gradient resistor disc to constitute.
The electric potential gradient of the high gradient resistor disc that adopts in the described high gradient leakage conductor is greater than 220V/mm.
Between described gap top electrode and the gap bottom electrode is the described air gap of connecting, and an end of described series connection air gap is fixed in the high-pressure side of transmission line, and the other end is fixed in the high-pressure side of described high gradient leakage conductor.
The height of described high gradient leakage conductor is less than 85% of the traditional circuit lightning arrester.
Described high gradient leakage conductor can be installed in positions such as lead top, below or the lead outside.
Described series connection air gap also can be supported with insulator.
Described gap top electrode, gap bottom electrode can be various versions such as annulus, elliptical ring, excellent type.
Described high gradient leakage conductor can hang on the iron tower by link, also can adopt flange to be fastened on the iron tower.
The distance of described series connection air gap is less than the structure height of described supporting insulator.
A kind of novel used for transmission line lightning protection device that provides according to the utility model has the following advantages:
1, novel used for transmission line lightning protection device volume little, in light weight, be convenient to circuit and install and use.
2, novel used for transmission line lightning protection device can be installed in positions such as lead top, below or the lead outside according to the transmission line actual conditions, and mounting means is versatile and flexible, and is easy to use.
3, novel lightning protection device body element high gradient leakage conductor is except that having the characteristics that traditional lightning arrester reduces lightning outage rate, and its height, weight ratio traditional circuit lightning arrester are little a lot, are more suitable for actual transmission line and install and use.
4, the air gap tolerance system voltage more than 50% of connecting in normal working conditions.Discharge occurs on the series connection air gap during thunderbolt, can effectively protect insulator, makes it avoid the thunderbolt damage.
5, the buffer action of series connection air gap makes resistor disc operation chargeability extremely low, has avoided the aging of resistor disc, makes lightning protection device operation maintenance workload minimum.
Description of drawings:
Fig. 1, Fig. 2, Fig. 3, Fig. 4 are according to the utility model---a kind of novel used for transmission line lightning protection device, four kinds of example structure schematic diagrames that provide.
Comprise high gradient leakage conductor 1, gap top electrode 2, gap bottom electrode 3, series connection air gap 4 and gold utensil 5 in the structural representation.
Embodiment:
Embodiment 1: a kind of embodiment of the present utility model as shown in Figure 1, a kind of novel used for transmission line lightning protection device that the utility model provides comprises high gradient leakage conductor 1, gap top electrode 2, gap bottom electrode 3, series connection air gap 4 and gold utensil 5;
Wherein high gradient leakage conductor 1 is installed in the lead lower position.Gap top electrode 2 is installed on the lead gold utensil 6.Gold utensil 5 adopts flange arrangement.
Embodiment 2: a kind of embodiment of the present utility model as shown in Figure 2.Reference embodiment 1, wherein high gradient leakage conductor 1 is installed in the lead top position.Gap bottom electrode 3 is installed on the lead gold utensil 6.Gold utensil 5 adopts U type link to be connected with iron tower.
Embodiment 3: a kind of embodiment of the present utility model as shown in Figure 3.Reference embodiment 1, its intermediate gap top electrode 2, gap bottom electrode 3 all adopt the electrode of grading ring version.Series connection air gap 4 usefulness insulators support.
Embodiment 4: a kind of embodiment of the present utility model as shown in Figure 4.Reference embodiment 1, the air gap 4 usefulness insulators of wherein connecting support.Gap top electrode 2, gap bottom electrode 3 all adopt the electrode of excellent type version, install in monolateral installation of insulator or bilateral symmetry.Gap top electrode 2 or gap bottom electrode 3 also can adopt as shown in Figure 3 the electrode of grading ring version or the electrode of other versions.
Above preferred embodiment only supplies the usefulness of explanation the utility model, and is not to restriction of the present utility model.Those of ordinary skill in the art under guiding, can also make various distortion and conversion, so all equivalent technical solutions all belongs to protection range of the present utility model in not breaking away from spirit and scope of the present utility model.
Claims (9)
1. a novel used for transmission line lightning protection device comprises high gradient leakage conductor, gap top electrode, gap bottom electrode, series connection air gap, gold utensil and annex, and it is characterized in that: described high gradient leakage conductor adopts the high gradient resistor disc to constitute.
2. a kind of novel used for transmission line lightning protection device as claimed in claim 1, it is characterized in that: the electric potential gradient of the high gradient resistor disc that adopts in the described high gradient leakage conductor is greater than 220V/mm.
3. a kind of novel used for transmission line lightning protection device as claimed in claim 1, it is characterized in that: between described gap top electrode and the gap bottom electrode is the described air gap of connecting, one end of described series connection air gap is fixed in the high-pressure side of transmission line, and the other end is fixed in the high-pressure side of described high gradient leakage conductor.
4. a kind of novel used for transmission line lightning protection device as claimed in claim 1, it is characterized in that: the height of described high gradient leakage conductor is less than 85% of the traditional circuit lightning arrester.
5. a kind of novel used for transmission line lightning protection device as claimed in claim 1 is characterized in that: described high gradient leakage conductor can be installed in positions such as lead top, below or the lead outside.
6. a kind of novel used for transmission line lightning protection device as claimed in claim 1, it is characterized in that: described series connection air gap also can be supported with insulator.
7. a kind of novel used for transmission line lightning protection device as claimed in claim 1, it is characterized in that: described gap top electrode, gap bottom electrode can be various versions such as annulus, elliptical ring, excellent type.
8. a kind of novel used for transmission line lightning protection device as claimed in claim 1, it is characterized in that: described high gradient leakage conductor can hang on the iron tower by link, also can adopt flange to be fastened on the iron tower.
9. series connection as claimed in claim 6 air gap is characterized in that: the distance of described series connection air gap is less than the structure height of described insulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206182246U CN201936711U (en) | 2010-11-23 | 2010-11-23 | Novel lightning protection device for power transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206182246U CN201936711U (en) | 2010-11-23 | 2010-11-23 | Novel lightning protection device for power transmission line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201936711U true CN201936711U (en) | 2011-08-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206182246U Expired - Lifetime CN201936711U (en) | 2010-11-23 | 2010-11-23 | Novel lightning protection device for power transmission line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201936711U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104599798A (en) * | 2014-12-12 | 2015-05-06 | 国家电网公司 | Direct current lightning arrester and system using the same |
| CN104833903A (en) * | 2015-03-04 | 2015-08-12 | 国家电网公司 | Method for determining gap distance of surge arresters containing series gapped structures along with altitude change |
| CN109961618A (en) * | 2019-03-22 | 2019-07-02 | 国网湖南省电力有限公司 | Composite insulator V-type arranges string falling prevention improvement and alarming method for power |
-
2010
- 2010-11-23 CN CN2010206182246U patent/CN201936711U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104599798A (en) * | 2014-12-12 | 2015-05-06 | 国家电网公司 | Direct current lightning arrester and system using the same |
| CN104833903A (en) * | 2015-03-04 | 2015-08-12 | 国家电网公司 | Method for determining gap distance of surge arresters containing series gapped structures along with altitude change |
| CN109961618A (en) * | 2019-03-22 | 2019-07-02 | 国网湖南省电力有限公司 | Composite insulator V-type arranges string falling prevention improvement and alarming method for power |
| CN109961618B (en) * | 2019-03-22 | 2020-09-01 | 国网湖南省电力有限公司 | Composite insulator V-shaped arrangement anti-string-falling treatment and warning method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110817 |
|
| CX01 | Expiry of patent term | ||
| DD01 | Delivery of document by public notice |
Addressee: Wang Yu Document name: Notice of expiration of patent right |
|
| DD01 | Delivery of document by public notice |