Impulse voltage distribution and frequency response of intershield windings
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Date
2016-09-01
Authors
Bagheri, Mehdi
Phung, B. T.
Salay Naderi, Mohammad
Journal Title
Journal ISSN
Volume Title
Publisher
IEEE Electrical Insulation Magazine
Abstract
Impulse voltage distributions in continuous disk windings are nonlinear, due to the small series capacitance of the winding. Consequently, transformer manufacturers often design large power transformers with interleaved windings to increase series capacitance, but in doing so reduce the value of the initial impulse voltage distribution coefficient α given by α = √(Cg/Cs), (1) where Cg is the shunt capacitance and Cs is the series capacitance of the winding. Sometimes fully interleaved windings are employed because they are more reliable, ensuring that the transformer will operate properly under lightning strike.
Description
Keywords
frequency response, impulse voltage distribution, intershield winding, Research Subject Categories::TECHNOLOGY::Electrical engineering, electronics and photonics
Citation
Bagheri, M., Phung, B. T., & Naderi, M. S. (2016). Impulse voltage distribution and frequency response of intershield windings. IEEE Electrical Insulation Magazine, 32(5), 32-40. [7552374]. DOI: 10.1109/MEI.2016.7552374