CN105552818A - Lightning protection system for preventing electromagnetic interference of high-voltage circuit - Google Patents
Lightning protection system for preventing electromagnetic interference of high-voltage circuit Download PDFInfo
- Publication number
- CN105552818A CN105552818A CN201610064058.1A CN201610064058A CN105552818A CN 105552818 A CN105552818 A CN 105552818A CN 201610064058 A CN201610064058 A CN 201610064058A CN 105552818 A CN105552818 A CN 105552818A
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- China
- Prior art keywords
- lightning
- absorption
- ground
- protection system
- electrode
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Links
- 238000010521 absorption reaction Methods 0.000 claims description 17
- 230000005540 biological transmission Effects 0.000 abstract description 25
- 230000001052 transient effect Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 230000001131 transforming effect Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- APTZNLHMIGJTEW-UHFFFAOYSA-N pyraflufen-ethyl Chemical compound C1=C(Cl)C(OCC(=O)OCC)=CC(C=2C(=C(OC(F)F)N(C)N=2)Cl)=C1F APTZNLHMIGJTEW-UHFFFAOYSA-N 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G13/00—Installations of lightning conductors; Fastening thereof to supporting structure
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
- H01R4/66—Connections with the terrestrial mass, e.g. earth plate, earth pin
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G7/00—Overhead installations of electric lines or cables
Landscapes
- Suspension Of Electric Lines Or Cables (AREA)
Abstract
The invention relates to a lightning protection system for preventing electromagnetic interference of a high-voltage circuit, belonging to the technical field of lightning protection grounding of the high-voltage circuit and aiming to solve the technical problem that a transient potential of a high-voltage power transmission system is risen sharply because the ground potential is risen, lightning current cannot be released timely and the lightning current intrudes into a station along the power transmission circuit when the circuit encounters lighting stroke and the lightning current enters the ground through the down lead since lightning arresters of three phases A, B and C of an overhead power transmission circuit in the prior art share a down lead. The lightning protection system comprises three lighting arresters and the down lead and also comprises a low-impedance absorption-type grounding device, wherein the absorption-type grounding device is arranged under the ground, the buried depth of a second electrode of the absorption-type grounding device under the ground is greater than the buried depth of a first electrode of the absorption-type grounding device under the ground, the lower end of the down lead is connected with the first electrode of the absorption-type grounding device, and the lead line is a shielding lead. By the lightning protection system, the impedance of lightning current release can be reduced, the lightning current is ensured to enter the ground, and the lightning stress of the power transmission circuit is reduced.
Description
Technical field
The invention belongs to high-tension line Lightning protection field, be specifically related to the lightning protection system of the anti-electromagnetic interference of a kind of high-tension line.
Background technology
Transmission line is the important component part of power transmission system, transmission line through part mostly for the soil resistivity such as wilderness, hills, high mountain has the area of sudden change, soil property fault zone, the junctional area in Rock and Soil mixing area, hillside and rice field, the area of the circumstance complications such as air port, mountain top, reservoir river, area, mining area.Because transmission line is long, the probability that same circuit many places meet with thunderbolt is comparatively large, is damage to crops caused by thunder severely afflicated area.
In transmission line lightning protection, overhead transmission line A, B, C three-phase respectively installs a lightning arrester, and lightning current enters ground by lightning arrester through downlead.In prior art, the lightning arrester of overhead transmission line A, B, C three-phase, share a downlead or utilize steel tower to do downlead, when circuit is struck by lightning, lightning current when downlead or steel tower enter ground, causes earth potential to raise by lightning arrester, lightning current cannot discharge in time, lightning wave is invaded in station along transmission line, causes the sharply rising of high voltage power transmission and transforming system transients current potential, cause tripping operation.
Summary of the invention
The lightning arrester that the object of the invention is to solve overhead transmission line A, B, C three-phase in prior art shares a downlead, when circuit is struck by lightning, lightning current by lightning arrester through downlead enter ground time, earth potential is caused to raise, lightning current cannot discharge in time, lightning wave is invaded in station along transmission line, causes the sharply rising of high voltage power transmission and transforming system transients current potential, cause the technical problem of tripping operation, the lightning protection system of the anti-electromagnetic interference of a kind of high-tension line is provided.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
The lightning protection system of the anti-electromagnetic interference of a kind of high-tension line, it comprises three lightning arresters and downlead, one end of described three lightning arresters is connected with the three-phase line in high-tension line respectively, the other end of three lightning arresters is all connected with the upper end of downlead by lead-in wire, wherein: it also comprises low-impedance absorption earthing device, described absorption earthing device is located in the ground, second electrode of absorption earthing device is greater than the buried depth of its first electrode in underground in the buried depth of underground, the lower end of downlead and the first Electrode connection of absorption earthing device, described lead-in wire is shielded lead.
Described low-impedance absorption earthing device comprises two electrodes, and the second electrode is located at below the first electrode.
The lightning protection system of described high-tension line also comprises release, and one end of described release is connected with the other end of lightning arrester, and the other end of release is connected with the upper end of downlead by lead-in wire.
Described downlead (2) is shielded lead.
Owing to present invention employs technique scheme, solve overhead transmission line A in prior art, B, the lightning arrester of C three-phase shares that a downlead exists, when circuit is struck by lightning, lightning current by lightning arrester through downlead enter ground time, earth potential is caused to raise, lightning current cannot discharge in time, lightning wave is made to invade in station along transmission line, cause the sharply rising of high voltage power transmission and transforming system transients current potential, cause the technical problem of tripping operation, compared with background technology, present invention employs a kind of absorption earthing device, it can form capacity effect by lightning current and the potential difference of distant place zero-potential point, reduce the impedance of lightning current release, ensure that lightning current enters ground smoothly, reduce the thunderbolt pressure of transmission line.Therefore, the present invention has the impedance that fully can reduce Lightning-Protected Grounding of Transmission Line system, and effectively reduce the impact on lightning protection earthing system and transmission line of the alternating electromagnetic field that causes by being struck by lightning, ensure that lightning current discharges smoothly, ensure the safety and stability of transmission line, reduce the advantage of the tripping operation probability of transmission line.
Accompanying drawing explanation
Fig. 1 is overhead transmission line lightning protection system structural representation in prior art;
Fig. 2 is structural representation of the present invention;
In figure: 1---lightning arrester, 2---downlead, 3---absorption earthing device, 4---release.
Embodiment
Below in conjunction with drawings and Examples, the present invention is elaborated:
As shown in Figure 2, the lightning protection system of the anti-electromagnetic interference of the high-tension line in the present embodiment, it comprises three lightning arresters 1 and downlead 2, one end of described three lightning arresters 1 is connected with the three-phase line in high-tension line respectively, the other end of three lightning arresters 1 is all connected with the upper end of downlead 2 by lead-in wire, wherein: it also comprises low-impedance absorption earthing device 3, described absorption earthing device 3 is located in the ground and it comprises two electrodes, second electrode is located at below the first electrode, second electrode of absorption earthing device 3 is greater than the buried depth of its first electrode in underground in the buried depth of underground, the lower end of downlead 2 and the first Electrode connection of absorption earthing device 3.Described lead-in wire is shielded lead.Described downlead 2 is shielded lead.
Second electrode of the absorption earthing device 3 in the present embodiment can also be located at the first electrode same position vertically or below tilting, also can have below certain level distance, but the buried depth of the second electrode must be made to be greater than the buried depth of the first electrode.
The lightning protection system of the anti-electromagnetic interference of the high-tension line in above-described embodiment, also comprises release 4, and one end of described release 4 is connected with the other end of lightning arrester 1, and the other end of release 4 is connected with the upper end of downlead 2 by lead-in wire.Release 4 can disconnect lightning protection system path when lightning arrester 1 damages, and ensures the normal work of electrical network.
Claims (4)
1. the lightning protection system of the anti-electromagnetic interference of high-tension line, it comprises three lightning arresters (1) and downlead (2), one end of described three lightning arresters (1) is connected with the three-phase line in high-tension line respectively, the other end of three lightning arresters (1) is all connected with the upper end of downlead (2) by lead-in wire, it is characterized in that: it also comprises low-impedance absorption earthing device (3), described absorption earthing device (3) is located in the ground, second electrode of absorption earthing device (3) is greater than the buried depth of its first electrode in underground in the buried depth of underground, the lower end of downlead (2) and the first Electrode connection of absorption earthing device (3), described lead-in wire is shielded lead.
2. the lightning protection system of the anti-electromagnetic interference of high-tension line according to claim 1, is characterized in that: described low-impedance absorption earthing device (3) comprises two electrodes, and the second electrode is located at below the first electrode.
3. the lightning protection system of the anti-electromagnetic interference of high-tension line according to claim 1, it is characterized in that: it also comprises release (4), one end of described release (4) is connected with the other end of lightning arrester (1), and the other end of release (4) is connected with the upper end of downlead (2) by lead-in wire.
4. the lightning protection system of the anti-electromagnetic interference of high-tension line according to claim 1,2 or 3, is characterized in that: described downlead (2) is shielded lead.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610064058.1A CN105552818A (en) | 2016-01-28 | 2016-01-28 | Lightning protection system for preventing electromagnetic interference of high-voltage circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610064058.1A CN105552818A (en) | 2016-01-28 | 2016-01-28 | Lightning protection system for preventing electromagnetic interference of high-voltage circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105552818A true CN105552818A (en) | 2016-05-04 |
Family
ID=55831835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610064058.1A Pending CN105552818A (en) | 2016-01-28 | 2016-01-28 | Lightning protection system for preventing electromagnetic interference of high-voltage circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105552818A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113140921A (en) * | 2021-04-28 | 2021-07-20 | 中国电建集团贵阳勘测设计研究院有限公司 | Grounding device for wind power plant or photovoltaic power station equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002345146A (en) * | 2001-05-15 | 2002-11-29 | Otowa Denki Kogyo Kk | Lightning protection system for electric facility |
| CN202068162U (en) * | 2010-12-30 | 2011-12-07 | 刘继 | High-voltage distribution line lightning prevention system |
| CN103414144A (en) * | 2013-08-15 | 2013-11-27 | 国家电网公司 | Lightning protection system of extra-high voltage alternating-current double-circuit line in mountain area |
| CN104868456A (en) * | 2015-06-17 | 2015-08-26 | 国家电网公司 | Absorption-type grounding circuit and method capable of reducing grounding impedance |
| CN205489419U (en) * | 2016-01-28 | 2016-08-17 | 国网山西省电力公司临汾供电公司 | High voltage transmission lines electromagnetic interference resistance's lightning protection system |
-
2016
- 2016-01-28 CN CN201610064058.1A patent/CN105552818A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002345146A (en) * | 2001-05-15 | 2002-11-29 | Otowa Denki Kogyo Kk | Lightning protection system for electric facility |
| CN202068162U (en) * | 2010-12-30 | 2011-12-07 | 刘继 | High-voltage distribution line lightning prevention system |
| CN103414144A (en) * | 2013-08-15 | 2013-11-27 | 国家电网公司 | Lightning protection system of extra-high voltage alternating-current double-circuit line in mountain area |
| CN104868456A (en) * | 2015-06-17 | 2015-08-26 | 国家电网公司 | Absorption-type grounding circuit and method capable of reducing grounding impedance |
| CN205489419U (en) * | 2016-01-28 | 2016-08-17 | 国网山西省电力公司临汾供电公司 | High voltage transmission lines electromagnetic interference resistance's lightning protection system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113140921A (en) * | 2021-04-28 | 2021-07-20 | 中国电建集团贵阳勘测设计研究院有限公司 | Grounding device for wind power plant or photovoltaic power station equipment |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160504 |
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| RJ01 | Rejection of invention patent application after publication |