Analysis of Insulation Degradation in Epoxy Insulators Using Finite Element Method

V. Padma, V. Raghavan
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引用次数: 2

Abstract

The reliability of high voltage power apparatus depends upon the careful design of its insulation and configuration of electrostatic field. The most common failure of the insulation occurs due to the surface insulation failure and the discharges within the void. In this regard, the monitoring and prevention of insulation failure becomes essential for uninterrupted functioning of high voltage power apparatus. Hence the deterioration of Insulation in an Insulator is determined from the analysis of Partial Discharge signals. The Partial Discharge signals are produced by the localized ionization within the electrical field. The Numerical Analysis of Electric field can provide information about the Partial Discharges which is determined by using the Finite Element Method. In this paper the electric field analysis are performed using FEM for the Epoxy insulator at various voltages and frequencies. It can provide information about the degradation of insulation well in advance thus avoiding major break down of power system.
环氧绝缘子绝缘劣化的有限元分析
高压电力设备的可靠性取决于其绝缘和静电场结构的精心设计。最常见的绝缘失效是由于表面绝缘失效和空隙内放电造成的。因此,对高压电力设备绝缘失效的监测和预防对其不间断运行至关重要。因此,通过对局部放电信号的分析来判断绝缘子的绝缘劣化程度。局部放电信号是由电场内的局部电离产生的。电场的数值分析可以提供局部放电的信息,而局部放电是用有限元法确定的。本文采用有限元法对环氧绝缘子在不同电压和频率下的电场进行了分析。它可以很好地提前提供绝缘劣化的信息,从而避免电力系统发生重大故障。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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