CN103762430B - Mobile communication base station transformer lightning protection earthing system - Google Patents

Mobile communication base station transformer lightning protection earthing system Download PDF

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Publication number
CN103762430B
CN103762430B CN201410011352.7A CN201410011352A CN103762430B CN 103762430 B CN103762430 B CN 103762430B CN 201410011352 A CN201410011352 A CN 201410011352A CN 103762430 B CN103762430 B CN 103762430B
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China
Prior art keywords
base station
lightning
mobile communication
transformer
ground network
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CN201410011352.7A
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CN103762430A (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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Abstract

The invention discloses a kind of mobile communication base station transformer lightning protection earthing system, comprise mobile communication base station ground network and base station transformer and base station transformer grounding net; Base station transformer grounding net is equilateral triangle structure, and the geometric center point of equilateral triangle ground network is connected by horizontal grounding objects with three summits; The three-in-one earth point of base station transformer is connected with lightning rod down conductor and is connected with the geometric center point of equilateral triangle ground network; Equilateral triangle ground network is connected with two points of mobile communication base station ground network by horizontal grounding objects near two summits of ground network side, mobile communication base station; Arrange base station special high pass flow thunder and lightning lightning arrester at base station high voltage side of transformer, the neutral point of base station transformer, the earth point of base station special high pass flow thunder and lightning lightning arrester, base station transformer case are connected to a bit and are connected with lightning rod down conductor.The invention has the advantages that realization effectively prevents base station transformer from suffering object of being struck by lightning.

Description

Mobile communication base station transformer lightning protection earthing system
Technical field
The present invention relates to the base station transformer near mobile communication base station, particularly relate 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 current operator, much build suburb or field in.In recent years, along with the development of mobile communications industry, mobile communications network scale constantly expands, mobile communication base station cover scope also by city, suburb to mountain area, field expansion.For ensureing the power supply to mobile communication base station, special base station transformer is needed to become 380V voltage to power to mobile communication base station 10kV voltage transitions.Usually, 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 occupies 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 geometric center point and three summits of described equilateral triangle ground network are electrically connected by horizontal grounding objects; The three-in-one earth point of base station transformer and lightning rod down conductor are electrically connected and are electrically connected with the geometric center point of equilateral triangle ground network; Equilateral triangle ground network is electrically connected respectively by two points of horizontal grounding objects and mobile communication base station ground network near two summits of ground network side, mobile communication base station; Arrange base station special high pass flow thunder and lightning lightning arrester at base station high voltage side of transformer, the neutral point of base station transformer, the earth point of described base station special high pass flow thunder and lightning lightning arrester, base station transformer case are connected electrically to a bit and are electrically connected with described lightning rod down conductor.
The length of side >=3 meter of described equilateral triangle ground network.
The invention has the advantages that realization effectively prevents mobile communication base station transformer from suffering object of being struck by lightning.
Accompanying drawing explanation
Fig. 1 is base station of the present invention transformer and base station, high-pressure side thereof special high pass flow 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 are electrically connected and are electrically connected with the geometric center point 4 of equilateral triangle ground network 3; Equilateral triangle ground network 3 is electrically connected respectively by two points of horizontal grounding objects 9,10 and mobile communication base station ground network 1 near two summits 5,6 of mobile communication base station ground network 1 side; Arrange base station special high pass flow thunder and lightning lightning arrester 11 in base station transformer 2 high-pressure side, the neutral point of base station transformer 2, the earth point of described base station special high pass flow thunder and lightning lightning arrester 11, the shell of base station transformer 2 are connected electrically to a bit and are electrically connected with described lightning rod 8 down conductor.
Lightning protection earthing system electrical principle of the present invention is summarized as follows:
The equilateral triangle ground network 3 of described base station transformer 2 is electrically connected with mobile communication base station ground network 1 horizontal grounding objects 9,10, its ground network area formed reaches maximum, earth resistance reaches minimum value, effectively can carry out diffusing to lightning current, decrease the use of the Grounding Grids 12 of mobile communication base station ground network 1.Base station special high pass flow thunder and lightning lightning arrester 11 is adopted to have high pass flow, the characteristic of low residual voltage (8/20 μ S20kA residual voltage is less than 50kV), be not easy when being struck by lightning to damage that (what current mobile communication base station 13 adopted is all Civil High Pressure lightning arrester, this lightning arrester through-current capacity is low, ginseng pressure is high, easily by broken by lightning), because residual voltage is less than 50kV, can guarantee that transformer insulated being unlikely to punctures, and save the lightning arrester of low-pressure side, this is because the machine room distribution box first order lightning protection device through-current capacity of mobile communication base station 13 is far above the magnitude of former low-pressure side lightning arrester, so not fragile, reduce difficulty of construction, save spending.The three-in-one earth point of base station transformer 2 and the downlead of lightning rod 8 are electrically connected, and object is that large Y-connection mode is converted into little star connected mode, to improve the position of reference point, reduce 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, geometric center point (4) and three summits (5,6,7) of described equilateral triangle ground network (3) are electrically connected by horizontal grounding objects; The three-in-one earth point of base station transformer (2) and lightning rod (8) down conductor are electrically connected and are electrically connected with the geometric center point (4) of equilateral triangle ground network (3); Equilateral triangle ground network (3) is electrically connected respectively by two points of horizontal grounding objects (9,10) with mobile communication base station ground network (1) near two summits (5,6) of ground network (1) side, mobile communication base station; Arrange base station special high pass flow thunder and lightning lightning arrester (11) in base station transformer (2) high-pressure side, the earth point of the neutral point of base station transformer (2), described base station special high pass flow thunder and lightning lightning arrester (11), the shell of base station transformer (2) are connected electrically to a bit and are electrically connected with described lightning rod (8) down conductor.
2. want the mobile communication base station transformer lightning protection earthing system described in ball 1 according to right, 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

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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 true CN103762430B (en) 2016-03-02

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Families Citing this family (2)

* 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
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

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
浅谈火电厂施工用电工程的设计与施工;高晓东;《科技创新导报》;20111129;114 *

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