CN103762430A - Lightning-protection grounding system for mobile communication base station transformer - Google Patents

Lightning-protection grounding system for mobile communication base station transformer Download PDF

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Publication number
CN103762430A
CN103762430A CN201410011352.7A CN201410011352A CN103762430A CN 103762430 A CN103762430 A CN 103762430A CN 201410011352 A CN201410011352 A CN 201410011352A CN 103762430 A CN103762430 A CN 103762430A
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China
Prior art keywords
base station
lightning
grounding
mobile communication
transformer
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CN201410011352.7A
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Chinese (zh)
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CN103762430B (en
Inventor
刘吉克
祁征
张清泉
朱清峰
梁新生
牛年增
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China Information Technology Designing Consulting Institute Co Ltd
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China Information Technology Designing Consulting Institute Co Ltd
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Priority to CN201410011352.7A priority Critical patent/CN103762430B/en
Publication of CN103762430A publication Critical patent/CN103762430A/en
Application granted granted Critical
Publication of CN103762430B publication Critical patent/CN103762430B/en
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Abstract

The invention discloses a lightning-protection grounding system for a mobile communication base station transformer. The lightning-protection grounding system comprises a mobile communication base station grounding grid, the base station transformer and a base station transformer grounding grid. The base station transformer grounding grid is of an equilateral triangle shape structure, and the geometric central point of the equilaterally triangular grounding grid is connected with three vertexes through a horizontal grounding body; a three-in-one grounding point of the base station transformer is connected with a grounding down lead of a lightning rod and the geometric central point of the equilaterally triangular grounding grid; the two vertexes of the side, close to the mobile communication base station grounding grid, of the equilaterally triangular grounding grid are connected with two points of the mobile communication base station grounding grid through the horizontal grounding body; a high-pass-flow thunder and lightning arrester special for a base station is arranged on the high-voltage side of the base station transformer, and a neutral point of the base station transformer, the grounding point of the high-pass-flow thunder and lightning arrester special for the base station and an outer shell of the base station transformer are connected to one point and then connected with the grounding down lead of the lightning rod. The lightning-protection grounding system has the advantage of effectively preventing the base station transformer from suffering from lightning stroke.

Description

Mobile communication base station transformer lightning protection earthing system
Technical field
The present invention relates near base station transformer mobile communication base station, relate in particular to the base station transformer lightning protection earthing system when mobile communication base station and base station transformer are less than 30 meters apart.
Background technology
The mobile communication base station of operator, much build suburb or field at present.In recent years, along with the development of mobile communications industry, mobile communications network scale constantly expands, the scope that mobile communication base station covers also by city, suburb to mountain area, field expands.For guaranteeing the power supply to mobile communication base station, need special base station transformer to become 380V voltage to power to mobile communication base station 10kV voltage transitions.Conventionally, base station piezoelectric transformer is located at side, mobile communication base station, because mobile communication base station thunder and lightning environment is more severe, therefore base station transformer or high and low pressure lightning arrester are easily by broken by lightning, cause mobile communication base station power failure or cause mobile communication base station outage, this situation is occupied suitable ratio in the accident of mobile communication base station, especially more like this when mobile communication base station and base station transformer are less than 30 meters apart.
Summary of the invention
The object of the invention is to provide a kind of mobile communication base station transformer lightning protection earthing system.
For achieving the above object, the present invention takes following technical proposals:
Mobile communication base station of the present invention transformer lightning protection earthing system, comprises mobile communication base station ground network and base station transformer and base station transformer grounding net; Described base station transformer grounding net is equilateral triangle structure, and the geometric center point of described equilateral triangle ground network and three summits are electrically connected by horizontal grounding objects; The three-in-one earth point of base station transformer and the electrical connection of lightning rod down conductor are also electrically connected with the geometric center point of equilateral triangle ground network; Equilateral triangle ground network is electrically connected by two points of horizontal grounding objects and mobile communication base station ground network respectively near two summits of mobile communication base station ground network one side; At base station high voltage side of transformer, base station special-purpose high pass flow thunder and lightning lightning arrester is set, earth point, the base station transformer case of the neutral point of base station transformer, described base station special-purpose high pass flow thunder and lightning lightning arrester is connected electrically to a bit rear and described lightning rod down conductor electrical connection.
The length of side >=3 meter of described equilateral triangle ground network.
The invention has the advantages that realization effectively prevents the mobile communication base station transformer object of being struck by lightning.
Accompanying drawing explanation
Fig. 1 is the special-purpose high pass flow of base station of the present invention transformer and base station, high-pressure side thereof thunder and lightning arrester ground schematic diagram.
Fig. 2 is the connecting structure for electrical equipment schematic diagram of base station of the present invention transformer grounding net and mobile communication base station ground network.
Embodiment
As shown in Figure 1, 2, mobile communication base station of the present invention transformer lightning protection earthing system, comprises mobile communication base station ground network 1 and base station transformer 2 and base station transformer grounding net; Described base station transformer grounding net is equilateral triangle structure, the length of side >=3 meter of described equilateral triangle ground network 3, and its geometric center point 4 and three summits 5,6,7 are electrically connected by horizontal grounding objects; The three-in-one earth point of base station transformer 2 and lightning rod 8 down conductor electrical connections are also electrically connected with the geometric center point 4 of equilateral triangle ground network 3; Equilateral triangle ground network 3 is electrically connected by two points of horizontal grounding objects 9,10 and mobile communication base station ground network 1 respectively near two summits 5,6 of mobile communication base station ground network 1 one sides; Base station special-purpose high pass flow thunder and lightning lightning arrester 11 is set in base station transformer 2 high-pressure sides, and the earth point of the neutral point of base station transformer 2, described base station special-purpose high pass flow thunder and lightning lightning arrester 11 is, the shell of base station transformer 2 is connected electrically to a bit rear and described lightning rod 8 down conductor electrical connections.
Lightning protection earthing system electrical principle of the present invention is summarized as follows:
By the equilateral triangle ground network of described base station transformer 23 and 1 use horizontal grounding objects 9,10 electrical connections of mobile communication base station ground network, the ground network area of its formation reaches maximum, earth resistance reaches minimum value, can effectively to lightning current, carry out diffusing, reduce the use of the Grounding Grids 12 of mobile communication base station ground network 1.Adopt base station special-purpose high pass flow thunder and lightning lightning arrester 11 to there is high pass flow, the characteristic of low residual voltage (8/20 μ S 20kA residual voltage is less than 50kV), (what mobile communication base station 13 adopted at present is all Civil High Pressure lightning arrester when thunderbolt, to be not easy damage, this lightning arrester through-current capacity is low, ginseng is pressed high, easily by broken by lightning), because residual voltage is less than 50kV, can guarantee that transformer insulated being unlikely to punctures, and saved the lightning arrester of low-pressure side, this be because the machine room distribution box first order lightning protection device through-current capacity of mobile communication base station 13 far above the magnitude of former low-pressure side lightning arrester, so it is not fragile, reduced difficulty of construction, saved spending.The three-in-one earth point of base station transformer 2 and the electrical connection of the downlead of lightning rod 8, object is that large Y-connection mode is converted into starlet shape connected mode, to improve the position of reference point, reduces senior staff officer's pressure that earth connection causes because of line length.

Claims (2)

1. a mobile communication base station transformer lightning protection earthing system, comprises mobile communication base station ground network (1) and base station transformer (2) and base station transformer grounding net; It is characterized in that: described base station transformer grounding net is equilateral triangle structure, the geometric center point (4) of described equilateral triangle ground network (3) is electrically connected by horizontal grounding objects with three summits (5,6,7); The three-in-one earth point of base station transformer (2) and the electrical connection of lightning rod (8) down conductor are also electrically connected with the geometric center point (4) of equilateral triangle ground network (3); Equilateral triangle ground network (3) is near two summits (5,6), two some electrical connections with mobile communication base station ground network (1) by horizontal grounding objects (9,10) respectively of mobile communication base station ground network (1) one side; The special-purpose high pass flow thunder and lightning lightning arrester (11) in base station is set in base station transformer (2) high-pressure side, and the neutral point of base station transformer (2), the earth point of the special-purpose high pass flow thunder and lightning lightning arrester in described base station (11), the shell of base station transformer (2) are connected electrically to a bit rear and described lightning rod (8) down conductor electrical connection.
2. according to right, want the mobile communication base station transformer lightning protection earthing system described in ball 1, it is characterized in that: the length of side >=3 meter of described equilateral triangle ground network (3).
CN201410011352.7A 2014-01-10 2014-01-10 Mobile communication base station transformer lightning protection earthing system Active CN103762430B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410011352.7A CN103762430B (en) 2014-01-10 2014-01-10 Mobile communication base station transformer lightning protection earthing system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410011352.7A CN103762430B (en) 2014-01-10 2014-01-10 Mobile communication base station transformer lightning protection earthing system

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CN103762430B CN103762430B (en) 2016-03-02

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104269663A (en) * 2014-09-26 2015-01-07 中讯邮电咨询设计院有限公司 Grounding method for small LTE distribution base station in different lightning strike environments
CN105426558A (en) * 2014-09-22 2016-03-23 国家电网公司 Method for determining electrical connection mode between substation grounding grid and base station grounding grid

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201690228U (en) * 2010-03-26 2010-12-29 胡义彪 Lightning protection system of mobile base station
CN203660077U (en) * 2014-01-10 2014-06-18 中讯邮电咨询设计院有限公司 Mobile communication base station transformer lightning protection grounding system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201690228U (en) * 2010-03-26 2010-12-29 胡义彪 Lightning protection system of mobile base station
CN203660077U (en) * 2014-01-10 2014-06-18 中讯邮电咨询设计院有限公司 Mobile communication base station transformer lightning protection grounding system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
高晓东: "浅谈火电厂施工用电工程的设计与施工", 《科技创新导报》 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105426558A (en) * 2014-09-22 2016-03-23 国家电网公司 Method for determining electrical connection mode between substation grounding grid and base station grounding grid
CN104269663A (en) * 2014-09-26 2015-01-07 中讯邮电咨询设计院有限公司 Grounding method for small LTE distribution base station in different lightning strike environments
CN104269663B (en) * 2014-09-26 2016-05-18 中讯邮电咨询设计院有限公司 The earthing method of small-sized LTE distributed base station under difference thunderbolt environment

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