Model Reduction of Potential Transformer Based on Revised Minimum Information Loss Method

Abstract:

The circuit model of potential transformer (PT) is indispensable in accurately simulating the electromagnetic characteristic under the lightning overvoltage and very fast transient overvoltage in power systems. This paper utilizes a reduction algorithm for potential transformer based on revised minimum information loss method (RMIL). First, we measured a 10 kV single phase potential transformer using the Agilent 4395A network/spectrum/impedance analyzer. Second, we obtained the rational approximation of two-port circuit parameters by vector fitting (VF). At last, revised minimum information loss method is applied to reduction the state equation of circuit parameters. Comparisons between the reduced and original are given to illustrate the approximating performance of RMIL.

• Periodical: Applied Mechanics and Materials (Volume 734)
• Pages: 822-826
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.734.822
• Online since: February 2015
• Authors: Gui Shu Liang, Xi Xiao Liu*, Shu Wei Zhang
• Keywords: Minimum Information Loss, Model Order Reduction, Potential Transformer, Vector Fitting

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