CN2457752Y - Earthing device for high soil resistivity area - Google Patents

Earthing device for high soil resistivity area Download PDF

Info

Publication number
CN2457752Y
CN2457752Y CN 00253193 CN00253193U CN2457752Y CN 2457752 Y CN2457752 Y CN 2457752Y CN 00253193 CN00253193 CN 00253193 CN 00253193 U CN00253193 U CN 00253193U CN 2457752 Y CN2457752 Y CN 2457752Y
Authority
CN
China
Prior art keywords
earthing
utility
rigid metal
soil resistivity
high soil
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
Application number
CN 00253193
Other languages
Chinese (zh)
Inventor
孟庆波
Original Assignee
孟庆波
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 孟庆波 filed Critical 孟庆波
Priority to CN 00253193 priority Critical patent/CN2457752Y/en
Application granted granted Critical
Publication of CN2457752Y publication Critical patent/CN2457752Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

The utility model relates to an earthing device for a high soil resistivity area, belonging to a safety protecting device in a power system. The utility model comprises a flat earthing net which is composed of sliver-shaped rigid metal conductors which are vertically and horizontally connected, and rigid metal electrodes which are at least arranged at the lower parts of nodes at four corners of the flat earthing net and extend into foundation holes. The foundation holes are filled with low conducting medium with a definite pressure. The utility model is provided with an earthing resistor and can satisfy requirements of specification of the electricity industry. An effect on preventing a lightning stroke is good. Investment can be saved. The earthing device is a preferred safety protecting facility which is built on a power station, a transformer substation and an electric network in a high soil resistivity area.

Description

The earthing device in high soil resistivity zone
The utility model relates to the earthing device in a kind of high soil resistivity zone, belongs to the safety guard in the electric power system, is to build first-selected safeguard protection facility on the sending out of rock or high soil resistivity, transformer station and electrical network.The lightning protection that also can be used for other power equipment.
Fast development along with electric utility, project of transmitting and converting electricity also increases severely thereupon, but in order not account for or account for less the arable land, often the trend of high voltage power transmission and transforming circuit, make its road of trying one's best through the mountain area, hills of bare place, transformer station also builds in similar location thereupon, it is the areas that belong to high soil resistivity that a lot of zones are wherein arranged, this has just increased difficulty to engineering construction, for guarantee electrical network and send out, the safe operation of transformer station, just must the corresponding technical measures of taking to reduce earth resistance.Common in the past way has: (1) is with 500 * 600 meters horizontal earth mat method; (2) soil replacement method; (3) buried depth is 2.5 meters, has the earth mat method of earth electrode.The conventional approach of above-mentioned reduction earth resistance, although in electric power networks, follow so far, yet all the power industry that do not reach in various degree requires the regulation requirement of earth resistance in 0.1-0.5 Europe, therefore, forming very high counterattack voltage under the effect of power system accident state or damage to crops caused by thunder causes the accident of power equipment damage and casualties to happen occasionally the safe operation of serious threat electrical network.Simultaneously the not only lightning protection effect of conventional approach of above-mentioned reduction earth resistance is poor, as soil replacement method, and have also have a drawback such as big, the long in time limit cost height of quantities, wait to improve based on the way of the traditional reduction earth resistance of described reason is anxious.
The purpose of this utility model realizes by the following technical solutions, it comprises a horizontal grounding net that is linked to each other and constitute in length and breadth by strip rigid metal conductor, at least the node four jiaos of horizontal grounding nets has the rigid metal electrode that puts in the ground datum hole, and pressure is filled with low conducting medium in the ground datum hole.
Described rigid metal electrode is any one in φ 50 steel pipes, 50 angle steel and φ 30 round steel.
Described low conducting medium is any one slurries in graphite, pulverized coal ash and the bentonite.
The utility model compared with prior art, owing to adopted technical measures and proper construction technology such as deep hole wall manufacturing crackle, the low conducting medium of pressure injection such as horizontal grounding net and a plurality of metal electrodes, and there is earth resistance to reach the regulation requirement of power industry through evidence, anti-lightning strike effective, guarantee the safe operation of electric power networks and power equipment.Reduce investment outlay simultaneously, be beneficial to and apply.
Fig. 1 is a plan structure schematic diagram of the present utility model.
Fig. 2 is the A-A sectional structure schematic diagram of Fig. 1.
Embodiment of the present utility model is described in detail in conjunction with the accompanying drawings, the horizontal grounding net 3 that band steel 2 with 60 * 6 or φ 30 round steel link to each other and constitute in length and breadth, at least the node 3 four jiaos of horizontal grounding nets has the rigid metal electrode 1 that puts in the ground datum hole 5, injects low conducting medium 4 in the ground datum hole 5 under pressure.Described metal electrode 1 is any one in φ 50 steel pipes, 50 angle steel and φ 30 round steel; Described low conducting medium 4 is any one or its mixed serums in graphite, pulverized coal ash and the bentonite.
When the utility model uses, earlier in the related scope of horizontal grounding net 3, by designing requirement need establish bore under the corresponding node of metal electrode 1 in φ 60~φ 130mm, be 20~100 meters ground datum hole 5 deeply, be beneficial to the crackle of low conducting medium 4 infiltrations then in the hole wall manufacturing with common technology, metal electrode is put into ground datum hole 5, pressure injects low conducting medium 4 back sealing of hole mouths, horizontal grounding net 3 fuses with metal electrode 1, then horizontal grounding net 3 is linked to each other with the power equipment ground wire, backfill becomes original ground, can come into operation.

Claims (3)

1, the earthing device in a kind of high soil resistivity zone, it is characterized in that it comprises a horizontal grounding net (3) that is linked to each other and constitute in length and breadth by strip rigid metal conductor (2), at least the node (3) four jiaos of horizontal grounding nets has the rigid metal electrode (1) that puts in the ground datum hole (5), and pressure is filled with low conducting medium (4) in the ground datum hole (5).
2, device according to claim 1 is characterized in that described rigid metal electrode (1) is any one in φ 50 steel pipes, 50 angle steel and φ 30 round steel.
3, device according to claim 1 is characterized in that it being that described low conducting medium (4) is any one slurries in graphite, pulverized coal ash and the bentonite.
CN 00253193 2000-11-24 2000-11-24 Earthing device for high soil resistivity area Expired - Fee Related CN2457752Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 00253193 CN2457752Y (en) 2000-11-24 2000-11-24 Earthing device for high soil resistivity area

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 00253193 CN2457752Y (en) 2000-11-24 2000-11-24 Earthing device for high soil resistivity area

Publications (1)

Publication Number Publication Date
CN2457752Y true CN2457752Y (en) 2001-10-31

Family

ID=33610691

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 00253193 Expired - Fee Related CN2457752Y (en) 2000-11-24 2000-11-24 Earthing device for high soil resistivity area

Country Status (1)

Country Link
CN (1) CN2457752Y (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102280726A (en) * 2011-05-18 2011-12-14 湖南省电力公司科学研究院 Method for reducing grounding resistance of grounding network with non-uniform soil resistivity
CN102610935A (en) * 2012-03-31 2012-07-25 云南省昆明农业气象试验站 Soil non-excavation grounding resistance reduction method
CN102790293A (en) * 2012-08-02 2012-11-21 鞍钢集团矿业公司 High-impedance electric device grounding system for metallurgic mine
CN103825113A (en) * 2014-03-17 2014-05-28 国家电网公司 Grounding device for high-soil resistivity region
CN109066250A (en) * 2018-08-14 2018-12-21 中国铁建电气化局集团北方工程有限公司 Mountain area high roadbed, high soil resistivity high-speed railway traction substation are grounded engineering method

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102280726A (en) * 2011-05-18 2011-12-14 湖南省电力公司科学研究院 Method for reducing grounding resistance of grounding network with non-uniform soil resistivity
CN102610935A (en) * 2012-03-31 2012-07-25 云南省昆明农业气象试验站 Soil non-excavation grounding resistance reduction method
CN102610935B (en) * 2012-03-31 2013-12-25 云南省昆明农业气象试验站 Soil non-excavation grounding resistance reduction method
CN102790293A (en) * 2012-08-02 2012-11-21 鞍钢集团矿业公司 High-impedance electric device grounding system for metallurgic mine
CN103825113A (en) * 2014-03-17 2014-05-28 国家电网公司 Grounding device for high-soil resistivity region
CN103825113B (en) * 2014-03-17 2016-04-20 国家电网公司 High soil resistivity earthing device
CN109066250A (en) * 2018-08-14 2018-12-21 中国铁建电气化局集团北方工程有限公司 Mountain area high roadbed, high soil resistivity high-speed railway traction substation are grounded engineering method
CN109066250B (en) * 2018-08-14 2019-11-19 中国铁建电气化局集团北方工程有限公司 Mountain area high roadbed, high soil resistivity high-speed railway traction substation are grounded engineering method

Similar Documents

Publication Publication Date Title
CN200969406Y (en) Combined grounding net
CN111244629B (en) Lightning protection grounding method of shared iron tower
CN103326139B (en) Hollow aluminum alloy tube grounding device capable of being assembled
CN202076426U (en) Grounding device of tower
CN2833910Y (en) Soil resistivity improving pit for reducing earth resistance
CN202888523U (en) Whole shielding metal armored cable connecting plug
KR100713698B1 (en) Ground plate for electric pole
CN204156112U (en) A kind of grounding system
CN2457752Y (en) Earthing device for high soil resistivity area
CN206640285U (en) A kind of power equipment lightning arrester
CN206293634U (en) A kind of overhead power transmission line pole tower combined type grounded screen
CN211182560U (en) Novel tower lightning grounding device
CN210838143U (en) Graphene lightning grounding system
CN111541122A (en) Grounding construction method for graphite-based flexible grounding material tower
CN206412495U (en) Efficient diffusing earthing or grounding means
CN102752762A (en) Design method for reducing base station ground screen area by ground screen effective utilization in lightning stroke
CN208045710U (en) Graphite-based flexible ground body
CN202772276U (en) Pole-tower lightning protection grounding device
CN2796160Y (en) Overvoltage protective earthing device for insulation conductor deep leading into earth
CN206250402U (en) A kind of electric power pylon earthing or grounding means
CN1855634A (en) Overvoltage protecting ground device with insulative wire leading underground deeply
CN201813056U (en) Assembled saline-alkali corrosion-resistant grounding body mould
CN204333704U (en) A kind of composite lightning-protection device of spherical thunder
CN205544162U (en) Lightning protection device for electric wire netting
CN217335027U (en) Lightning protection device suitable for medium-voltage distribution line full protection

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C19 Lapse of patent right due to non-payment of the annual fee
CF01 Termination of patent right due to non-payment of annual fee