浅析天然气门站防雷设计技术评价

BRIEF ANALYSIS ON THE TECHNICAL APPRAISAL OF LIGHTNING PROTECTION IN THE NATURAL GAS STATION

以南宫市天然气门站防雷装置设计技术评价为例,分析探讨了天然气门站防直击雷、防闪电电涌侵入、闪电感应措施设计评价依据和设计的基本标准。分析认为:天然气门站的建筑物、露天设备应按二类防雷标准设计,门站内的电子信息系统雷电防护等级为B级。因此门站建筑物、露天设备应采用防直击雷、电感应雷及防电磁脉冲措施;供电系统应采用过电压保护,重要设备直流供电线路应加装直流电涌保护器,信号系统应加装信号电涌保护器。

Taking the technical appraisal of lightning protection in the natural gas station of Nangong City as an example,this article analyzes and studies the appraisal basis and basic standard for the design of protection against direct lightning,lightning surge invasion and lightning induction measures.And it is considered that the buildings and outdoor equipments of the natural gas station should be designed according to lighting protection standard of Category Two and the thunder and lightning protection of the electronic information system should be designed according to Grade B.Therefore,protection against direct lightning,electric induction of lightning and protection against electromagnetic pulse should be considered in the design of the buildings and outdoor equipments of the natural gas stations.And the overvoltage protection should be adopted in the power supply system;direct current surge protector should be installed in the direct power supply lines of important equipments;and signal electronic surge protector should be installed in the signal system.