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首页> 外文期刊>Electricity Today >EVALUATING FLASHOVER PERFORMANCE OF ICE OR SNOW COVERED INSULATORS
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EVALUATING FLASHOVER PERFORMANCE OF ICE OR SNOW COVERED INSULATORS

机译：评估冰雪覆盖绝缘子的飞弧性能

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摘要

Under ice and snow conditions, in addition to the mechanical damage to overhead power lines, the electrical performance of insulators is also adversely affected, sometimes leading to flashover and consequent power outages. This phenomenon has been reported from a large number of countries in North America, Europe, and Asia. In most cases, insulator flashovers occurred during and after accretion, or during melting, caused by increasing air or precipitation temperature, solar radiation, or heating effects of local arcs, with clean and polluted insulators. Despite the very real need for designing and selecting adequate insulators for cold climate regions, no standard method has yet been proposed for insulator icing tests. Because most testing methods to date have been developed individually, it is difficult to compare results from various laboratories. To remedy this situation, an IEEE Task Force, was recently established with the purpose of recommending icing test methods and procedures to evaluate the electrical performance of insulators.
机译：在冰雪条件下，除了对架空输电线的机械损坏外，绝缘子的电气性能也会受到不利影响，有时会导致飞弧和随之而来的停电。北美，欧洲和亚洲的许多国家都报告了这种现象。在大多数情况下，绝缘子闪络发生在积聚期间和之后或熔化过程中，这是由于空气或降水温度升高，太阳辐射或局部电弧的加热效应导致的，且绝缘子被污染。尽管非常需要为寒冷气候地区设计和选择合适的绝缘子，但尚未提出用于绝缘子结冰测试的标准方法。由于迄今为止大多数测试方法都是单独开发的，因此很难比较各个实验室的结果。为了纠正这种情况，最近成立了一个IEEE工作队，目的是建议使用结冰测试方法和程序来评估绝缘子的电气性能。

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