CN205543271U - Novel three -dimensional earth mat - Google Patents
Novel three -dimensional earth mat Download PDFInfo
- Publication number
- CN205543271U CN205543271U CN201620048208.5U CN201620048208U CN205543271U CN 205543271 U CN205543271 U CN 205543271U CN 201620048208 U CN201620048208 U CN 201620048208U CN 205543271 U CN205543271 U CN 205543271U
- Authority
- CN
- China
- Prior art keywords
- ground
- electrode
- ring
- horizontal
- loop
- 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.)
- Expired - Fee Related
Links
Landscapes
- Elimination Of Static Electricity (AREA)
Abstract
The utility model provides a novel three -dimensional earth mat, includes the ground loop, the ground loop includes interior ground connection ring sum external ground ring, and interior ground loop is being in the concentric circles on the same horizontal plane with the external ground ring, is equipped with horizontal grounding body on the ground loop, and horizontal grounding body passes the centre of a circle of ground loop, hands over with interior ground connection ring sum external ground ring homogeneous phase, horizontal grounding body is equipped with the perpendicular earthing pole of vertical decurrent inner ring with the nodical department of interior ground loop, horizontal grounding body is equipped with the perpendicular earthing pole of vertical decurrent outer loop with the nodical department of external ground ring. The utility model provides a novel three -dimensional earth mat can effectively reduce the ground resistance of aerogenerator earth mat, reduces step voltage and touch voltage to improve aerogenerator's the interior staff's of the horizontal soft breeze electric field of lightning protection safety.
Description
Technical field
This utility model relates to overvoltage and lightning protection field, particularly a kind of novel solid earth mat.
Background technology
Wind-driven generator ground network ground resistance is the important parameter weighing wind-driven generator lightning protection properties, reduces wind-force
Electromotor ground network ground resistance is remarkably improved the safety of staff in the lightning protection level of wind-driven generator and wind energy turbine set.At wind
In the electric property research of power generator, long-standing problem is high resistivity soil apparatus for lower wind electromotor ground network ground resistance
Higher, and along with the distance of neighbouring wind electromotor becomes remote, take the fall resistance measure that neighbouring wind electromotor earth mat interconnects no longer
It is suitable for.In order to meet single wind generator lightning protection requirement, this patent proposes one and by double annulus, many vertical electrodes and divides
The novel solid earth mat of fork-join earth polar composition, can effectively reduce the earth resistance of wind-driven generator earth mat, step voltage and contact
Voltage, the safety of staff in the lightning protection level of raising wind-driven generator and wind energy turbine set.
In the overvoltage and lightning protection engineering of wind-driven generator, it will usually the thunder that is used for releasing is set for wind-driven generator
The earth mat of electric current, is generally arranged on high mountain or area, wilderness due to wind-driven generator, and environment is relatively more severe, and soil resistivity is relatively
Height, the way improving wind-driven generator lightning protection properties at present is to be interconnected by the earth mat of multiple stage wind-driven generator, but is as
The capacity of wind-driven generator increases and the increase of fuselage height, and the distance of neighbouring wind electromotor is more and more remote, takes many typhoons
The fall resistance method of power generator earth mat interconnection can cause cost to improve.
Wind-driven generator is when being struck by lightning, and powerful dash current flows along tower, and final thunder and lightning flows through earth mat and lets out
Spill into ground.In this transient process, due to the existence of ground network ground resistance, earth potential will be raised significantly, it is possible to produce
Dangerous touch voltage and step voltage, additionally, between power cable and screen layer and wind driven generator transformer high pressure
Likely producing the biggest voltage difference between winding and low pressure winding, this voltage may puncture the insulation of cable or Transformer Winding,
The electronics installed in damaging tower or electrical equipment, it is also possible to damage wind-driven generator at a distance, thus affect the safety of system
Stable operation.The lightning protection of wind-driven generator does not also have specification, the lightning Protection Design of existing wind-driven generator the most both at home and abroad
It is substantially what the way with reference to other industry (such as building, electric power and electronic communication) was carried out.The lightning protection of wind-driven generator at present
It is still the most qualified as sole criterion using earth mat power frequency earthing resistance that ground connection is checked and accepted, but at altofrequency, the lightning current of amplitude
Under effect, earth mat is let out and can be produced spark effect and inductive effect in scattered current course, and now power frequency characteristic cannot truly reflect
The lightning protection effect of earth mat, needs to consider the impact characteristics of earth mat.At high resistivity soil region, soil conductivity is poor, thunder and lightning
Stream is difficult in soil diffusion, and impulse earthed resistance is relatively big, and step voltage and contact voltage are relatively big, normal to wind-driven generator
Safe operation and the personal safety with staff threaten.
Chinese patent " a kind of grounding device (CN204577627U) reducing Wind turbines earth resistance " provides one
The grounding device in parallel by annulus and Duo Gen electrode, resistance reducing effect is obvious, but construction inconvenience.
Chinese patent " reduces the grounding body (CN202523855U) of ground resistance of wind driven generator " and provides a kind of reinforcing bar
Cage grounding body, resistance reducing effect is obvious, but this grounding device volume is relatively big, and material requested is more, and engineering cost is higher.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of novel solid earth mat, can effectively reduce wind-power electricity generation
The earth resistance of machine earth mat, reduces step voltage and contact voltage, thus improves lightning protection level and the wind energy turbine set of wind-driven generator
The safety of interior staff.
For solving above-mentioned technical problem, this utility model be the technical scheme is that a kind of novel solid earth mat, including
Ground loop, described ground loop includes interior ground loop and external ground ring, and interior ground loop and external ground ring are for being in same level
Concentric circular, ground loop is provided with horizontal grounding objects, horizontal grounding objects is through the center of circle of ground loop, with interior ground loop and external
Ground ring is the most crossing；Described horizontal grounding objects is provided with internal ring vertical grounding electrode straight down with the point of intersection of interior ground loop, described
Horizontal grounding objects is provided with outer shroud vertical grounding electrode straight down with the point of intersection of external ground ring.
Preferably, described external ground ring is provided with horizontal short conductors, and horizontal short conductors is uniformly distributed on external ground ring.
Preferably, described external ground ring being additionally provided with horizontal rays electrode, horizontal rays electrode is uniformly arranged on external ground
On ring, the extended line of horizontal rays electrode is through the center of circle of external ground ring.
Preferably, the middle part of described horizontal rays electrode is provided with middle part vertical grounding electrode straight down, horizontal rays electricity
The end of pole is provided with end vertical earthing pole straight down.
Preferably, the middle part of described horizontal rays electrode is additionally provided with short circuit earth polar, middle part, and the end of horizontal rays electrode is also
It is provided with divergent electrode.
Preferably, at a distance of 5-15m between described interior ground loop and external ground ring.
Preferably, described horizontal grounding objects has multiple, is uniformly arranged on ground loop.
This utility model has the advantage that
1) mode in parallel is used to effectively reduce the earth resistance of wind-driven generator earth mat；
2) in limited contact area, increase effective grounding area, accelerate lightning current diffusion in soil；
3) vertical electrode increased accelerates lightning current diffusion in soil, reduce earth resistance, step voltage and
Contact voltage；
4) short conductors increased and bifurcated enhance spark effect.
Accompanying drawing explanation
The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings:
Fig. 1 is structural representation of the present utility model；
In figure: interior ground loop 1, external ground ring 2, horizontal grounding objects 3, horizontal short conductors 4, internal ring vertical grounding electrode 5, outer shroud
Vertical grounding electrode 6, horizontal rays electrode 7, middle part vertical grounding electrode 8, end vertical earthing pole 9, short circuit earth polar, middle part 10, bifurcated
Electrode 11.
Detailed description of the invention
In Fig. 1, a kind of novel solid earth mat, including ground loop, described ground loop includes interior ground loop 1 and external ground ring
2, interior ground loop 1 is the concentric circular being in same level with external ground ring 2, is provided with horizontal grounding objects 3, water on ground loop
Flush the terrain 3 center of circle through ground loop, all intersect with interior ground loop 1 and external ground ring 2；Described horizontal grounding objects 3 connects with interior
The point of intersection of ground ring 1 is provided with internal ring vertical grounding electrode 5 straight down, described horizontal grounding objects 3 and the point of intersection of external ground ring 2
It is provided with outer shroud vertical grounding electrode 6 straight down.Described external ground ring 2 is provided with horizontal short conductors 4, and horizontal short conductors 4 is uniform
It is distributed on external ground ring 2.Being additionally provided with horizontal rays electrode 7 on described external ground ring 2, horizontal rays electrode 7 is uniformly arranged on
On external ground ring 2, the extended line of horizontal rays electrode 7 is through the center of circle of external ground ring 2.The middle part of described horizontal rays electrode 7
Being provided with middle part vertical grounding electrode 8 straight down, the end of horizontal rays electrode 7 is provided with end vertical earthing pole straight down
9.The middle part of described horizontal rays electrode 7 is additionally provided with short circuit earth polar 10, middle part, and the end of horizontal rays electrode 7 is additionally provided with bifurcated electricity
Pole 11.At a distance of 5-15m between described interior ground loop 1 and external ground ring 2.Described horizontal grounding objects 3 has multiple, is uniformly arranged on and connects
On ground ring.
It is 15m that the present embodiment chooses interior ground loop 1 diameter, and external ground ring 2 diameter is 25m, horizontal grounding objects 3
Number be 4, depending on the number of horizontal short conductors 4 is with the size of ring, the present embodiment have chosen 24 horizontal short conductors 4, water
The a length of 0.2m-0.6m of flat short conductors 4, increases diffusing area, in order to accelerate the speed that lightning current spreads in soil, including
Internal ring vertical grounding electrode 5 and outer shroud vertical grounding electrode 6, internal ring vertical grounding electrode it is respectively provided with on ground loop 1 and external ground ring 2
5 and the length of outer shroud vertical grounding electrode 6 according to soil regime in Practical Project depending on.
In Practical Project, this patent is embedded in 1m below earth's surface, when being struck by lightning, by interior ground loop 1, external ground
Ring 2, horizontal grounding objects 3, horizontal short circuit terrain 4, the vertical ground electrode of internal ring 5, outer shroud vertical grounding electrode 6, horizontal rays electrode
7, middle part vertical grounding electrode 8, end vertical earthing pole 9, short circuit earth polar, middle part 10, divergent electrode 11 spreads thunder and lightning in soil
Stream, reduces the effect of ground resistance of wind driven generator, contact voltage, step voltage, thus improves wind-driven generator lightning protection
The safety of staff in level and wind energy turbine set.
The above embodiments are only optimal technical scheme of the present utility model, and are not construed as limit of the present utility model
System, the technical scheme that protection domain of the present utility model should be recorded with claim, the technical scheme recorded including claim
The equivalents of middle technical characteristic is protection domain.Equivalent the most in this range is improved, also at this utility model
Protection domain within.
Claims (7)
1. a novel solid earth mat, including ground loop, described ground loop includes interior ground loop (1) and external ground ring (2), inside connects
Ground ring (1) and external ground ring (2) are the concentric circular being in same level, it is characterised in that: on ground loop, it is provided with level
Grounding body (3), horizontal grounding objects (3), through the center of circle of ground loop, all intersects with interior ground loop (1) and external ground ring (2)；Described
Horizontal grounding objects (3) is provided with internal ring vertical grounding electrode (5) straight down with the point of intersection of interior ground loop (1), and described level connects
Terrain (3) is provided with outer shroud vertical grounding electrode (6) straight down with the point of intersection of external ground ring (2).
A kind of novel solid earth mat, it is characterised in that: described external ground ring (2) is provided with level
Short conductors (4), horizontal short conductors (4) is uniformly distributed on external ground ring (2).
A kind of novel solid earth mat the most according to claim 1 or claim 2, it is characterised in that: it is additionally provided with on described external ground ring (2)
Horizontal rays electrode (7), horizontal rays electrode (7) is uniformly arranged on external ground ring (2), the prolongation of horizontal rays electrode (7)
Line is through the center of circle of external ground ring (2).
A kind of novel solid earth mat, it is characterised in that: the middle part of described horizontal rays electrode (7)
Being provided with middle part vertical grounding electrode (8) straight down, the end vertical that the end of horizontal rays electrode (7) is provided with straight down connects
Earth polar (9).
A kind of novel solid earth mat, it is characterised in that: the middle part of described horizontal rays electrode (7)
Being additionally provided with short circuit earth polar, middle part (10), the end of horizontal rays electrode (7) is additionally provided with divergent electrode (11).
A kind of novel solid earth mat, it is characterised in that: described interior ground loop (1) and external ground ring
(2) at a distance of 5-15m between.
A kind of novel solid earth mat, it is characterised in that: described horizontal grounding objects (3) has multiple, all
Even it is arranged on ground loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620048208.5U CN205543271U (en) | 2016-01-19 | 2016-01-19 | Novel three -dimensional earth mat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620048208.5U CN205543271U (en) | 2016-01-19 | 2016-01-19 | Novel three -dimensional earth mat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205543271U true CN205543271U (en) | 2016-08-31 |
Family
ID=56764333
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620048208.5U Expired - Fee Related CN205543271U (en) | 2016-01-19 | 2016-01-19 | Novel three -dimensional earth mat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205543271U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106384896A (en) * | 2016-11-15 | 2017-02-08 | 高环 | Grounding device for electric instrument |
| CN107959135A (en) * | 2017-12-22 | 2018-04-24 | 国网山东省电力公司济宁供电公司 | A kind of novel integrated earthed system and construction method based on more performances |
| CN108020739A (en) * | 2017-11-29 | 2018-05-11 | 中国南方电网有限责任公司超高压输电公司广州局 | A kind of method for reducing deep well grounding electrode maximum current density |
| CN110265800A (en) * | 2019-05-21 | 2019-09-20 | 中国建筑第八工程局有限公司 | Based on the earthing or grounding means and its construction method under the conditions of plate brad supporting |
| CN111786349A (en) * | 2020-06-09 | 2020-10-16 | 深圳供电局有限公司 | Step voltage suppression method for power transmission line tower |
| CN114465026A (en) * | 2021-12-22 | 2022-05-10 | 西北核技术研究所 | Impact current grounding device and method |
-
2016
- 2016-01-19 CN CN201620048208.5U patent/CN205543271U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106384896A (en) * | 2016-11-15 | 2017-02-08 | 高环 | Grounding device for electric instrument |
| CN106384896B (en) * | 2016-11-15 | 2018-11-30 | 石家庄安邦世通自动化设备有限公司 | A kind of electric meter earthing or grounding means |
| CN108020739A (en) * | 2017-11-29 | 2018-05-11 | 中国南方电网有限责任公司超高压输电公司广州局 | A kind of method for reducing deep well grounding electrode maximum current density |
| CN107959135A (en) * | 2017-12-22 | 2018-04-24 | 国网山东省电力公司济宁供电公司 | A kind of novel integrated earthed system and construction method based on more performances |
| CN110265800A (en) * | 2019-05-21 | 2019-09-20 | 中国建筑第八工程局有限公司 | Based on the earthing or grounding means and its construction method under the conditions of plate brad supporting |
| CN111786349A (en) * | 2020-06-09 | 2020-10-16 | 深圳供电局有限公司 | Step voltage suppression method for power transmission line tower |
| CN111786349B (en) * | 2020-06-09 | 2021-12-07 | 深圳供电局有限公司 | Step voltage suppression method for power transmission line tower |
| CN114465026A (en) * | 2021-12-22 | 2022-05-10 | 西北核技术研究所 | Impact current grounding device and method |
| CN114465026B (en) * | 2021-12-22 | 2023-07-21 | 西北核技术研究所 | Impact current grounding device and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205543271U (en) | Novel three -dimensional earth mat | |
| CN204578439U (en) | A kind of hydroelectric station device of solar generating | |
| CN106451030A (en) | Device and method for reducing grounding resistance of grounding grid | |
| CN204131109U (en) | A kind of lightning-protection device for fan | |
| CN205277718U (en) | Wind generating set cabin cover lightning protection system | |
| CN204696254U (en) | A kind of Y type earthing device of wind turbine generator | |
| CN209823107U (en) | High-efficient lightning protection system of wind-powered electricity generation field | |
| CN105443324A (en) | Wind generating set cabin cover lightning protection system and design method of wind generating set cabin cover lightning protection system | |
| Ahmed et al. | Effectiveness of interconnection of wind turbine grounding influenced by interconnection wire | |
| CN206655783U (en) | A kind of wind-driven generator lightning-protection module | |
| CN106762467A (en) | A kind of lightning protection system for wind power generation plant | |
| CN207587442U (en) | A kind of composite insulator | |
| CN206533034U (en) | A kind of energy-saving type lightning rod | |
| CN204632938U (en) | A kind of arm of many diffusings for Wind turbines earthing device | |
| CN204577627U (en) | A kind of earthing device reducing Wind turbines earth resistance | |
| CN204720576U (en) | A kind of new type grounding device | |
| CN205277719U (en) | Special lightning rod device of wind generating set cabin cover | |
| CN208753548U (en) | A kind of novel shaft tower grounding-for-lightning device | |
| CN203892118U (en) | Wind power system with lightning-proof device | |
| Li et al. | Transient characteristics of wind turbine grounding system in high soil resistivity area due to lightning strike | |
| CN203910988U (en) | Cage type structure anticorrosion resistance reducing grounding pole suitable for small grounding net | |
| CN204257834U (en) | A kind of centralized earthing device utilizing displacement current to improve characteristics of the dispersed flow | |
| CN209056724U (en) | It is grounded dilatation discharge device | |
| CN201865860U (en) | Lightning-protection device for fan | |
| CN105789928A (en) | Electric power grounding grid |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170713 Address after: 432000 No. 543, ring road, Xiaogan, Hubei Patentee after: Xiaogan branch of the first power engineering consulting design Co., Ltd. Address before: 443002 Yichang University Road, Hubei, No. 8 Patentee before: China Three Gorges University |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160831 Termination date: 20190119 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |