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RISK ASSESSMENT OF DAMAGE TO TELECOMMUNICATION SITES DUE TO LIGHTNING IN TYPICAL AREAS IN VIETNAM

Vietnam is in the lightning center of Asia, so damage caused by lightning is very large, especially in the telecommunications field. Telecommunication sites are usually built in high positions, and have the antenna tower higher than surrounding structures thus the risk of direct lightning strikes is large. Currently, the selection of lightning protection solutions for these telecommunication sites mainly based on experience and preliminary calculation, not based on the results of risk assessment of damage due to lightning. This paper analyzes and calculates the risk of loss of service caused by lightning to telecommunication sites in typical areas in Vietnam. The results show that the level of loss of services caused by lightning to telecommunication sites in typical areas in Vietnam much higher than the tolerable value. When the surge protective devices are installed on all the incoming service lines, the level of risk caused by lightning can decrease up to 100 times.

Từ khóa: telecommunication site, risk of damage due to lightning, lightning protection solution

7 p ovanketv4 29/12/2016 431 1

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