新型雷电预警系统在地震台站的应用

福建地区的雷电活动频繁,地震台站的数据完整性和数据质量因雷电灾害严重降低。为确保台站仪器稳定运行及数据有效可靠,福建局实施多个措施对地震台站内、外部防雷进行整体改造。新型雷电预警系统设定多级报警阀值,并实时监视台站20km范围内大气电场强度,当系统监测值超阀值时,则发出预警并自动切换电源,为前兆仪器设备的防雷发挥着至关重要作用,也为取代人工断电模式提供安全保证,有利于地震台站稳定运行。

Application of New Lightning Early Warning System in Seismic Stations

Thunderstorm activity is frequent in Fujian area,and the data integrity and data quality of seismic stations are seriously decreased due to the thunderstorm.In order to ensure the normal work of the instrument and the stability and reliability of the data,a number of measures have been taken to reform the external lightning protection and internal lightning protection of the station.The new type of lightning early warning system in this paper monitors the intensity of the atmospheric electric field within 20 km of the station.When the monitoring value of the system has reached the setting of the early warning parameters,it sends out early warning and switches the power automatically.It plays a key role in the lightning protection of the precursory instruments and provides safety protection for the replacement of human work.The seismic station is running steadily.