Lightning impulse voltage and overshoot evaluation proposed in drafts of IEC 60060-1 and future UHV testing
Lightning impulse voltage and overshoot evaluation proposed in drafts of IEC 60060-1 and future UHV testing
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IEC 60060-1草案和未来特高压测试中提出的雷电冲击电压和过冲评估
DOI：
10.1109/tdei.2010.5595567
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发表时间：
2010
影响因子：
3.1
通讯作者：
E. Gockenbach
中科院分区：
文献类型：
--
作者：
M. Hinow;W. Hauschild;E. Gockenbach
雷电冲击（LI）电压测试是高压（HV）和超高压（UHV）绝缘质量保证不可或缺的方法。测试电路中不可避免的寄生电感会在雷电脉冲 (LI) 峰值处产生振荡，称为过冲。本文概述了现有的和提出的 LI 电压过冲评估方法。分析推导阐明了超调幅度和超调幅度/持续时间考虑方法之间的关系。因此发现两种方法通过应用电力变压器测试提供了相似的结果。此外，本文指出，通过保持 T1=1.2 μs 的前沿时间，特高压测试需要更高的允许超调。
Lightning impulse (LI) voltage testing is an indispensable method for quality assurance of high voltage (HV) and ultra high voltage (UHV) insulation. Not avoidable parasite inductances of the testing circuit provide an oscillation, known as overshoot, at the peak of the lightning impulse (LI). The present paper gives an overview of existing and proposed overshoot evaluation methods of LI voltage. An analytic derivation clarifies the relation between an overshoot magnitude- and overshoot magnitude-/duration- considering method. Hence the finding is derived that both methods provide similar results by applying power transformer testing. Moreover the current paper identifies that a higher permitted overshoot is required for UHV testing by keeping the front time of T1=1.2 μs.