关键词: 油气管道, 防感应雷, 接地系统, 等电位连接

Abstract: With the continuous improvement of oil and gas pipeline station information system, the number of instrument, communication and other weak current equipment is also increasing, and the automation and communication system in the station has become the nerve center of oil and gas pipeline. However, most of the oil and gas pipeline stations are located in areas with extremely complex thunderstorm activities, and there are many devices, so lightning strikes occur from time to time. Lightning strikes are mainly manifested as direct lightning and inductive lightning. Inductive lightning usually harms weak current equipment such as instrument and communication, resulting in the interruption of station information system and affecting the monitoring and information transmission functions of oil and gas pipelines. For the stations of Sino-Myanmar Oil/Gas Pipelines (the pipeline sections in Guizhou Province) is taken as an research case. According to the characteristics of oil and gas pipeline stations, this paper analyzes its causes in terms of manifestations of induction lightning invading into weak current equipment, and adopts comprehensive lightning protection design concepts, namely, shielding, equalizing voltage and grounding, proposes specific lightning protection measures so as to reduce the induction lightning, and achieves better lightning protection effect and improves the reliability of oil and gas pipeline station operation.

Key words: oil/Gas Pipelines, inductive lightning protection, grounding system, equipotential bonding