Base station lightning protection system

Abstract

The invention discloses a base station lightning protection system, comprising a grounding bar, a machine room main distribution, a lightning protector, base station assorted equipment, wherein the grounding bar is connected with ground wires of all equipment in a machine room and is used for carrying out grounding aggregation on the ground wires of all the equipment; the machine room main distribution is connected with the grounding bar by ground wires and is used for providing an alternating current power source for all the equipment in the machine room; the lightning protector is connectedwith the grounding bar by a PE end and is used for bleeding lightning current led into the machine room; the base station assorted equipment is connected with the grounding bar by the ground wires; the connecting point of the lighting protector and the grounding bar is positioned at the position on the grounding bar, closest to a grounding network; and the connection point of the machine room maindistribution and the grounding bar is positioned on the PE end, closest to the lightning protector, on the grounding bar. The grounding network corresponding to all the equipment in the machine roomhas the same electrical potential, thus loosening the requirements to the resistance value of the grounding network of a base station, simultaneously also improving the lightning protection capabilityof the whole base station system to a great extent and effectively guaranteeing the safety of all the equipment in the machine room of the base station.

Description

technical field [0001] The invention relates to the communication field, in particular to a base station lightning protection system. Background technique [0002] At present, with the increasing scale of mobile communication networks, the distribution range of base stations is becoming wider and wider. Correspondingly, the lightning protection requirements of base stations are gradually increasing. refer to figure 1 As shown, in the prior art, in the base station computer room, in order to facilitate the connection of various equipment (such as base station wireless receiving (Base Transceiver Station, BTS) equipment, optical fiber switch cabinet, optical fiber integrated cabinet, switching power supply cabinet and general power distribution of the computer room] For location aggregation, each device needs to be connected to the grounding bar, and connected to the ground network through the grounding bar. Among them, the grounding points of the BTS equipment, optical fiber...

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Problems solved by technology

[0003] 1. Since the inductance of the cable itself has the characteristic of storing voltage when transmitting high-frequency pulses, when the power input line (that is, the remote cable) of the general power distribution of the equipment room is struck by lightning, it is easy to lead high voltage into the base station equipment room. The voltage starts the lightning arrester, the lightning arrester operates, and discharges the lightning current, such as figure 1 As shown, the general power distribution of the computer room and the four ground points A, B, C, and D are at the highest end relative to the ground grid. Therefore, when the lightning current discharges, each ground point will have a different potential relative to the ground grid difference, and the existence of different potential differences among the various devices makes it easy for the devices to be damaged by lightning breakdown during the lightning discharge process

[0004] 2. When the iron tower outside the base station is struck by lightning and the lightning is led to the ground grid through the lightning rod, the voltage drop caused by the grounding resistance will enter the computer room through the ground grid along the grounding wire of the grounding row, and the high voltage will reach the lightning protection device Each device may have been broken down before

[0005] In view of the above defects, there are great hidden dangers in the lightning protection measures of the existing base station system, which may easily cause serious losses to the equipment

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