气象2016，Vol.42Issue(11)：1387-1394,8.DOI:10.7519/j.issn.1000-0526.2016.11.011
河南电网“污闪”故障的综合气象因素分析
Analysis of the Integrated Meteorological Factors of Power Equipment Pollution Flashover in Henan
摘要
Abstract
According to the spetio-temporal distribution characteristics of the power equipment pollution flashover and the geographic features in Henan,duration of the contamination,temperature inversion near the ground surface,relative humidity and wind are firstly identified as import contributions to pollution flashover disaster.Then the composite thresholds of these factors are respectively assessed using the meth-ods of spatio-temporal matching,statistical analysis of threshold and model based on the flashover hazard data and meteorological observations.The comprehensive meteorological model for pollution flashover es-tablished here considers well the atmospheric conditions that breed the disaster,including high humidity, weak wind,less rain in the early period and stable atmospheric stratification near the surface.The model established here fits the relationship between the meteorological environmental conditions and the pollution flashover events well.The validation results indicate that the model can capture the disaster events with the false alarm rate less than 10%.The spatio-temporal characteristics of the annual mean power flashover events calculated from the 30-year historical observations show high frequency over the northeast of Henan during wintertime.Thus,the findings in this paper would provide a scientific support for the early warn-ing of power equipment pollution flashover in this region.关键词
电网污闪/综合气象因素/风险Key words
power equipment pollution flashover/composite meteorological factors/risk分类
天文与地球科学引用本文复制引用
常蕊,周宁,王欣雯,郭鹏,宋丽莉,梁允..河南电网“污闪”故障的综合气象因素分析[J].气象,2016,42(11):1387-1394,8.基金项目
国家电网公司重大基础前瞻科技项目（SG20141187）资助 （）
