绝缘子覆冰密度与电场强度、绝缘子材料、结构、形状、覆冰水电导率等有关。
It also shows that the electric strength, the material, type, structure of insulators and the water conductivity may influence the ice density.
1998年底阳泉地区发生线路绝缘子覆冰闪络故障，对线路安全运行造成了威胁。
The running safety of line was threatened by insulator sleet covering flashover derault of line at the late of 1998.
在2008年初的电网冰灾事故中，导地线金具和绝缘子覆冰掉串是输电线路事故中常见的情况。
In the ice calamity accident of power grid on beginning of 2008, the common condition in the accident of transmission line was the ice loading on earth wire fittings and insulators.
绝缘子覆冰及其电气特性试验方法是严重复冰地区外绝缘设计的重要基础，但至今尚无该试验方法的标准。
Insulators icing and electrical tests methods, which is not proposed at any standards by now, are important for the external insulation design of HV transmission lines in severe icing districts.
输电线路覆冰可引起导线舞动、杆塔倾斜、倒塌、断线及绝缘子闪络等问题。
Transmission line regelation may cause conductor galloping, pole leaning or collapse, conductor breaking or insulator flashover etc.
线路绝缘子发生覆冰闪络故障，对线路安全运行造成了威胁。
The menace of transmission line safe operation is the ice flashover accident of transmission line insulator.
线路绝缘子发生覆冰闪络故障，对线路安全运行造成威胁。
The ice flashover accident of transmission line insulator is harmful for transmission line safe operation.
冰的电气特性影响输电线路覆冰绝缘子闪络电压。
The flashover voltage of iced insulators of transmission lines is affected by the electrical characteristic of ice.
因此，对盘形悬式绝缘子直流覆冰试验方法进行研究，对直流覆冰输电线路外绝缘特性的研究具有重大的意义。
Therefore, it has great significance to research DC icing test methods on disk-shaped suspension insulator for study of DC transmission line characteristics of external insulation.
研究了覆冰桥接时冰棱的长度对覆冰合成绝缘子电场和电位分布的影响，以及空气间隙在覆冰合成绝缘子外沿所处的位置不同对电场和电位分布的影响。
The author researches the influence of the length of icicle in ice bridge connection and the position of air gap in the composite insulators to the distribution of electrical field and potential.
接触网覆冰不仅影响接触线的弛度、支柱的容量，在一定程度上还影响着接触网绝缘子的闪络电压。
Meanwhile, the factors which affect the flashover voltage of ceramic insulators were analyzed, the methods for improving the hold-off voltage were recommended from the in.
带电覆冰对绝缘子的覆冰状况、覆冰密度和闪络电压均有影响。
For energized icing, icing state, ice density and flashover voltage are affected.
覆冰绝缘子伞裙间隙未桥接时，冰凌尖端的放电是影响绝缘子闪络电压的主要因素之一。
The discharge at the top of icicle is one of the main factors influencing flashover voltage when the air gap amid the sheds of ice-covered insulators is not bridged.
我国地形地貌复杂，覆冰面广，输电线路绝缘子冰闪事故时有发生。
Due to the varied topography and large icing area in China, the flashover accidents of ice-covered insulators happen with high frequency.
线路绝缘子发生覆冰闪络故障，对线路安全运行造成威胁。
The ice flashover accident of transmission line insulator is harmful for transmission line safe operation. The cause of insulator ice flashover is the ice bridge.
国内外学者对覆冰绝缘子闪络特性进行了大量研究，但是对闪络机理的研究不多。
Therefore, a systematic study of flashover performance and mechanism of insulators covered-with ice has both a very important academic meaning and an engineering value.
接触网覆冰不仅影响接触线的弛度、支柱的容量，在一定程度上还影响着接触网绝缘子的闪络电压。
The flashover performance of ice-covered XZP-210 insulator strings was investigated and the effects of the string length and arrangement on the icing flashover voltage were analyzed.
接触网覆冰不仅影响接触线的弛度、支柱的容量，在一定程度上还影响着接触网绝缘子的闪络电压。
The flashover performance of ice-covered XZP-210 insulator strings was investigated and the effects of the string length and arrangement on the icing flashover voltage were analyzed.
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