Surge Transfer Study for Power Transformer using …

Surge Transfer Study for Power Transformer using emtdc / pscad Veerabrahmam Bathini, Chandra Shekhar Reddy Atla, Dr. K. Balaraman and K. Parthasarathy 1 Abstract- The lightning and switching surges can be transferred from one voltage level to another through Transformer couplings. A distribution system, which may not be directly exposed to the overvoltages of atmospheric origin, but connected to a utility system through a Transformer of high turns ratio will be exposed to overvoltages on the secondary side due to overvoltages on the primary windings. The resulting stresses on the distribution system may exceed the BIL levels. This paper presents modeling of high frequency autotransformer and frequency dependent Surge arrester models and results of simulations for lightning and switching surges transferred through 502 MVA, 380/132 kV autotransformer using emtdc / pscad . Surge arresters are usually provided on the high voltage side and low voltage side of the autotransformers.

Surge Transfer Study for Power Transformer Using EMTDC/PSCAD Veerabrahmam Bathini, Chandra Shekhar Reddy Atla, Dr. K. Balaraman and K. Parthasarathy

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  Using, Study, Power, Transfer, Transformers, Transfer study for power transformer using, Transfer study for power transformer using emtdc pscad, Emtdc, Pscad

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