ISSN 1000-0526
CN 11-2282/P
CN 11-2282/P
Archive > Volume 42 Issue 11 > 2016,42(11):1387-1394. DOI:10.7519/j.issn.1000-0526.2016.11.011 Prev Next
Analysis of the Integrated Meteorological Factors of Power Equipment Pollution Flashover in Henan
- Article
- Figures
- Metrics
- Preview PDF
- Reference
- Related
- Cited by
- Materials
Abstract:
According to the spetiotemporal 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 methods of spatiotemporal matching, statistical analysis of threshold and model based on the flashover hazard data and meteorological observations. The comprehensive meteorological model for pollution flashover established 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 spatiotemporal characteristics of the annual mean power flashover events calculated from the 30year 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 warning of power equipment pollution flashover in this region.
Keywords:
Project Supported:
Clc Number:
Mobile website
