Transformer Protection Against Resonance Overvoltages in Power Systems
Amir Heidary (TU Delft - Electrical Engineering, Mathematics and Computer Science)
M. Popov – Promotor (TU Delft - Electrical Engineering, Mathematics and Computer Science)
M. Ghaffarian Niasar – Promotor (TU Delft - Electrical Engineering, Mathematics and Computer Science)
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Abstract
Transformers are a vital component of power systems. As well-established electromagnetic devices, they change voltage levels and enable efficient power transfer while preserving the system’s frequency. Ensuring the reliable operation of these critical unit s is essential for the continuous transmission of electrical energy. Consequently, safeguarding transformers against various faults has always been a significant concern in power systems.
One phenomenon that threatens transformer performance is transient voltage in the power system. These transient voltages, containing a range of harmonic frequencies, propagate as electromagnetic waves through power lines and interact with transformers. Transients often result from lightning strikes or switching operations. Upon receiving these signals, transformers respond differently to various frequency components, necessitating precise modeling and frequency response analysis to predict their behavior under such conditions....