The study results show that the minimum ac flashover voltage decreases with the increase of the ice amount accreted on the insulator surface by an exponential law , and the down - trend of the minimum ac flashover voltage will slow gradually with the bridging of the shed of the insulators by icicles , both the average saturated ice amount and the special exponent m of effect of ice amount for different insulators depend on the radius of shed and the air - gaps of the sheds of the insulators , and that the ac ice flashover voltage decrease with the decrease pressure ratio p / p0 ( rise of the altitude ) by power - law for different esdd and icing - states when the altitude is from 4000m to 5500m . the special exponent n , which show the effects of altitude on the flashover voltage , is various with the type of insulator , icing - states and the surface status of iced insulator etc . , and that the minimum ac flashover voltage of iced insulators decreases by power - law with esdd or the freezing water conductivity for different ice amount and atmospheric 研究结果表明:在不同海拔高度和等值盐密esdd下,绝缘子的最低交流冰闪电压均随覆冰量的增加而呈指数规律降低;当覆冰量增加到一定程度后,最低交流冰闪电压随覆冰量增加而降低的趋势趋于饱和;不同绝缘子串的平均饱和覆冰量及闪络电压的覆冰量影响特征指数m均与绝缘子的盘径和伞距等因素有关;在海拔4000 5500m之间,不同等值盐密esdd和覆冰状态下,绝缘子的交流冰闪电压随海拔高度的增加(气压的降低)与p / p0呈乘幂关系降低,气压影响特征指数n与绝缘子类型、覆冰类型、覆冰表面状况等因素有关;当覆冰量和气压一定时,绝缘子的最低冰闪电压均随着等值盐密( esdd )或覆冰水电导率的增加而呈乘幂关系降低,并逐渐趋于饱和。
冰: ice类型: type; mold; form; cut类型: type; mold; form; cut◇类型论 theory of types; 类型语句 [计算机] type statementsnumeric类型: numeric type按类型: by type包类型: packet type波类型: wave types舱类型: tank type长类型: long type串类型: string type; type of string次类型: sub-type等类型: o b a f g短类型: short type段类型: segment type; type of segment各类型: a skilled diversified and multilevel workforce环类型: lootype基类型: base type键类型: key type空类型: void type块类型: chunk type类类型: class types类型, 流派: genre类型,描述: types, description类型,型号: type类型,形式: type