地震工程学报Issue(2)：619-622,628,5.DOI:10.3969/j.issn.1000-0844.2015.02.0619
测震台站综合防雷系统建设及效能评价
Construction and Evaluation of a Comprehensive Lightning Protection System for Seismic Stations
摘要
Abstract
An analysis of the loss of seismic observation equipment in the Jiangsu Province of China since 2009 has revealed three primary reasons for equipment loss related to lightning strikes:(1)Unprotected digital seismic sta-tions.(2)Data line interference from lightning,which is caused by excessive distances between sensors and data col-lectors.(3)The non-normalized installation of station lines.A summary of basic,yet comprehensive,lightning pro-tection measures,combined with an analysis of actual event occurrences in the Jiangsu Province of China,are pres-ented.These protective measures include:the reformation of the power grid,lightning protection for the distribu-tion systems,lightning protection for signal and communications equipment,and the normalization of wiring plans. If seismic observation equipment and lightning protection equipment are to be connected in series,the background seismic noise and the calibration parameters must be checked.When selecting data for the calculation of background seismic noise,the following two points should be taken into consideration:(1)The data should be chosen from 00:00 to 01:00 every day,when the influence of human activity is minimized.(2)The data must contain no seismic event;otherwise,data should be chosen from the next hourly interval.Liyang Station is presented as a case study of the implementation of lightning protection system for a seismic station.Data from one month prior to the installation of the lightning protection system,one month during the operation of the lightning protection system,and one month during the following thunderstorm season are presented.This case study includes the calculation of the background seismic noise and the calibration parameters before and after the lightning protection system installation,and determines the actual influ-ence of the lightning protection system on the quality of collected seismic data.An innovative installation scheme for decou-pling devices,a first for the protection of seismic systems from lightning,is discussed.关键词
雷害/综合防雷/退耦器/防雷效能Key words
lightning damage/comprehensive lightning protection/decoupling device/effectiveness of lightning pro-tection分类
天文与地球科学引用本文复制引用
瞿旻,霍祝青,戴波,单菡,王大伟..测震台站综合防雷系统建设及效能评价[J].地震工程学报,2015,(2):619-622,628,5.基金项目
江苏省地震局青年基金项目(201502QZ) （201502QZ）
