Advances of Power System & Hydroelectric Engineering · 2008 · 20 citations · 0 references
Natural SciencesElectrical EngineeringCritical Infrastructure ProtectionCryosphere StudiesSnow HydrologyLightning ProtectionPower Grid AnalysisSnow ScienceSnowpack FormationTransmission LinesEssential Physical FeaturesHigh-voltage Transmission LinesIce LayersSnow Insulation EffectsSnow Load EffectsSnow Load ResistanceSnow-insulating EffectsTower Typology
In this paper, meteorological and physical features of snow and ice, that caused great damage to transmission line in the year 2008, are illustrated. Distribution laws of the collapsed towers about tower type, terrain and its features, and design factors are shown according to the statistical figures of 500 kV transmission lines of SGCC. The essential features of tower collapsing caused by the ice are explained based on the model of the ice load acting on the tower. And some suggestions of promoting the capability of resistant ice of transmission line are given from the point of design.