Equipment installed in a power system network has to tolerate impulse overvoltage
throughout its life span. Lightning impulses are one of the primary reasons of this …

During operation transformers are typically subjected to overvoltages with different wave
shapes. Even though overvoltage protection systems, such as metal oxide surge arresters …

A voltage transformer, as voltage signal detection equipment, plays an important role in a
power system. Presently, more and more electric power systems are adopting potential …

Various kinds of transient overvoltages are the main reason for damaging the electrical
apparatus. Lightning impulse is one of the primary reasons for transient overvoltages in …

This paper describes a comparison of overvoltage propagation in transformer windings.
Expanding and evolving electrical networks comprise various classes of transient …

In this paper, some non-standard impulse voltage waveforms are generated through
simulation platform and fed to the oil-paper insulation model to analyse the responses. Effect …

The field impulse voltage test plays the most important role to ensure the safe of the power
transformer. It is hard to carry out the standard impulse voltage test for the power equipment …

In this article, the effect of five different non-standard lightning impulses and one standard
impulse have been investigated on seven different types of Nomex dry-type insulation. For …

The impulse voltage wave invading a transformer is not the double exponential impulse
wave (DEIW) specified by the IEC but a non‐standard waveform with oscillation attenuation …

In this article, the effect of moisture on the next-generation insulation is investigated, and
hence, the paper's moisture content of transformer oil-paper insulating samples is estimated …