Improved high voltage pulse generator for automated insulator fault detection

H. Sanders, D. Warnow
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Abstract

Insulators that have suffered invisible damage can cause catastrophic system failure. Detection of the fault through visual inspection is not possible. An automated non-destructive test method is preferred. We have developed a system capable of peak pulse voltage of > 50 kV with fast rise time and limited pulse energy coupled with a high speed FPGA processor to analyze the output voltage and current for potential insulator faults. This paper will discuss the design and test results of a high-voltage pulse generator with automated fault detection. This pulse generator has been improved using a new high-voltage solid state switch based on thyristors capable of >100 A/ns and >300 V/ns. Using this switch increased the efficiency by 25% versus an IGBT based switch. This paper will also discuss the design and test results of this new switch.
用于绝缘子故障自动检测的改进高压脉冲发生器
绝缘体遭受看不见的损坏会导致灾难性的系统故障。无法通过目测检测故障。首选自动无损检测方法。我们开发了一个峰值脉冲电压为50kv,上升时间快,脉冲能量有限的系统,并结合高速FPGA处理器来分析潜在绝缘子故障的输出电压和电流。本文将讨论一种具有故障自动检测功能的高压脉冲发生器的设计和测试结果。该脉冲发生器采用一种新型高压固态开关进行了改进,该开关基于可达100 a /ns和300 V/ns的晶闸管。与基于IGBT的开关相比,使用这种开关的效率提高了25%。本文还将讨论这种新型开关的设计和测试结果。
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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