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Volt-time curves of 24 kV porcelain insulators under non-standard impulse waveshapes

机译：非标准脉冲波纹下24 kV瓷绝缘子的电压曲线

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摘要

This paper presents an application of novel method in order to assess the characteristic of volt-time curves based on Disruptive Effect Model. The tests were performed on a pin-type, porcelain insulator of 24 kV class. Besides the standard 1.2/50 μs impulse voltage waveshape, four non-standard impulse waveshapes, of both polarities, were adopted in the tests, namely 1.2/4 ms, 1.2/10 ms, 3/10 μs, and 7.5/30 μs. The volt-time characteristics obtained from the tests were compared with those predicted by three different procedures related to the Disruptive Effect Model. The results show that the methods by Darveniza and Vlastos and by Hileman do not predict insulator breakdown for the lower peak voltage levels in some cases. On the other hand, a good agreement was found between theoretical and experimental results for the calculations performed using the method proposed by the authors.
机译：本文介绍了新方法的应用，以评估基于破坏性效果模型的伏特曲线特性。在24 kV级的销型瓷绝缘体上进行测试。除了标准的1.2 /50μs脉冲电压波嘘，在测试中采用了两种极性的四个非标准脉冲波纹，即1.2 / 4ms，1.2 / 10ms，3 /10μs和7.5 /30μs。将从测试中获得的伏特 - 时间特性与三种不同程序预测的与破坏性效果模型进行了比较。结果表明，在某些情况下，达汶萨和vlastos和Hileman的方法并未预测较低峰值电压水平的绝缘子故障。另一方面，在使用作者提出的方法进行的计算结果之间存在良好的一致性和实验结果。

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