There have been considerable advancements in various aspects of transformer engineering
since the publication of the first edition in 2004. Improvements can be clearly seen in …

In this thesis a reliable, versatile and rigorous method for high frequency power transformer
modeling is searched and established. The purpose is to apply this model to sensitivity …

The wide variety of lightning stroke characteristics and the modifying effects of power system
components result in a diversity of intrusive lightning voltage waveshapes that stress …

The electromagnetic transient overvoltage in the substation is an important factor that affects
the life of insulation equipment. For evaluate the economy and reliability of the insulation …

Impulse voltage distributions in continuous disk windings are nonlinear, due to the small
series capacitance of the winding. Consequently, transformer manufacturers often design …

Strike of a lightning stroke to the high voltage terminal of a power transformer results in an
impulse stress on its windings. The magnitude of the series capacitance of the windings has …

Determination of exact nature and location of faults during impulse testing of transformers is
of practical importance to the manufacturer as well as designers. The presently available …

Switching events in inter connected power systems have significant effects on EHV
transformers. Standard high-voltage lightning and switching impulse tests are performed on …

In order to design a power transformer it is important to understand its internal
electromagnetic behaviour. That can be obtained by measurements on physical …

Interleaving of the high‐voltage winding turns is a widely‐accepted method for restraining
the surge voltage stresses in extra high voltage (EHV) transformers. Reduction of voltage …