Analysis of Monitoring Data Quality of Hubei ADTD Lightning Location System
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Abstract:
In order to improve the operational application quality and efficiency of the monitoring data of the ADTD lightning monitoring system, the lightning monitoring data of the system in Hubei Province from 2006 to 2019 are used to statistically analyze the ground lightning distribution law near several high-rise buildings and the time-space distribution law of the whole province through the grid method, lightning case verification method and qualitative analysis method. The positioning accuracy is verified by lightning accidents. The results show that: (1) There is a deviation between the high-value areas of ground lightning return stroke times around four high-rise buildings in Hubei and the actual positions of highrise buildings, and the actual location of the buildings. The deviation distance ranges from 190 to 1548 m, and the deviation azimuth is not regular. (2) The positioning deviation data of four reference points of high-rise buildings and the actual lightning stroke points of lightning disaster accidents corresponding to the lightning monitoring system show that the average positioning error of the system in plain area is 539 m, the average positioning error in mountainous area is 1384 m, and the positioning error in mountainous area is significantly greater than that in plain area. (3) The temporal and spatial distribution characteristics of the system’s monitoring data are in good agreement with the precipitation characteristics of Hubei and the monitoring data of similar monitoring systems in surrounding provinces and cities of Hubei. The fitting degree between the cumulative probability characteristics of lightning current and the distribution regulation recommended by IEEE is high, indicating that the main parameters monitored by the system have a certain accuracy.
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Supported by:Beijing E-Tiller Technology Development Co., Ltd.
Supported by:Beijing E-Tiller Technology Development Co., Ltd.