Pramanik, Saurav and Satish, L (2013) Estimation of Series Capacitance for a Three-Phase Transformer Winding From Its Measured Frequency Response. In: IEEE TRANSACTIONS ON POWER DELIVERY, 28 (4). pp. 2437-2444.
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Recently, authors published a method to indirectly measure series capacitance (C-s) of a single, isolated, uniformly wound transformer winding, from its measured frequency response. The next step was to implement it on an actual three-phase transformer. This task is not as straightforward as it might appear at first glance, since the measured frequency response on a three-phase transformer is influenced by nontested windings and their terminal connections, core, tank, etc. To extract the correct value of C-s from this composite frequency response, the formulation has to be reworked to first identify all significant influences and then include their effects. Initially, the modified method and experimental results on a three-phase transformer (4 MVA, 33 kV/433 V) are presented along with results on the winding considered in isolation (for cross validation). Later, the method is directly implemented on another three-phase unit (3.5 MVA, 13.8 kV/765 V) to show repeatability.
|Item Type:||Journal Article|
|Additional Information:||copyright for this article belongs to IEEE Xplore|
|Keywords:||Frequency response; frequency-response analysis (FRA); high-voltage (HV) winding; series capacitance; three-phase transformers|
|Department/Centre:||Division of Electrical Sciences > Electrical Engineering|
|Date Deposited:||13 Nov 2013 10:53|
|Last Modified:||13 Nov 2013 10:53|
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