基于先导发展法的绝缘子串伏秒特性研究

目前绝缘子串伏秒特性主要通过冲击放电试验获取，成本较高，且现有研究伏秒特性的模拟计算方法只考虑了标准雷电波的情况。针对上述问题，结合空气间隙的放电研究，基于先导发展法建立了考虑绝缘施加电压波形的伏秒特性计算方法，利用该方法计算了25片XP-160绝缘子在标准雷电波下的伏秒特性，并与实测及IEEE推荐雷电波下绝缘子的伏秒特性进行比较。结果表明本文提出的计算方法可以更加准确地模拟绝缘子的实际放电行为，可以作为模拟绝缘子串伏秒特性的1种新的计算方法。

Research on insulator volt-time characteristics based on the method of leading development

At present, the volt-time characteristic of insulator string is mainly obtained by impulse discharge test with high cost, while the existing simulation calculation method of volt-time characteristic only considers the situation of standard lightning wave. In this paper, based on the research of long air gap discharge, a method of calculating the volt-time characteristics of 25 pieces of XP-160 insulators under the standard lightning wave was established based on the method of leading development. The volt-time characteristic curve obtained by this model was compared with that of the insulator under the lightning wave recommended by IEEE and the actual measurement. It was found that the calculation method proposed in this paper could simulate the actual discharge behavior of the insulator more accurately, which showed that this method could be used as a new calculation method to simulate the volt-time characteristic curve of the insulator string.