Risk Assessment of Damages due to Lightning Discharges: A Case Study to a Telecommunication System in Singburi Province of Thailand

摘要

The paper describes a case study on risk assessment of damages to a telecommunication site with adjacent antenna mast. The site is located in the town centre of Singburi Province of Thailand. The risk analysis is based on an IEC standard [1, 2] and ITU-T recommendation [3, 4]. The aim of the risk analysis is to study the effect from the ac power supply lines on the annual number of expected damages due to lighting discharges. The analysis shows that by reducing the route length of power cables the frequency of damage can be decreased significantly. Also, the implementation of SPDs at the entrance of power cables into the telecommunication building contribute to a further decrement of damage.