On the accuracy of detailed model inductance matrix estimation for air core winding

Jafar Nosratian Ahour | Saeed Seyedtabaii | Gevork B. Gharehpetian

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URL :   http://research.shahed.ac.ir/WSR/WebPages/Report/PaperView.aspx?PaperID=84549
Date :  2017/12/09
Publish in :    Archives of Electrical Engineering
DOI :  https://doi.org/10.1515/aee-2017-0060
Link :  https://www.degruyter.com/view/j/aee.2017.66.issue-4/aee-2017-0060/aee-2017-0060.xml
Keywords :detailed, matrix

Abstract :

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Researchers have used various methods to determine the parameters of transformer- equivalent circuits in transient studies. But most of these previous algorithms had difficulty finding the equivalent circuit parameters in a bigger model. This paper presents a new method to extract the inductance matrix of a detailed model for an air core winding for transient studies using frequency-response measurement data. This matrix can be determined with acceptable accuracy by using the proposed method. The biggest advantage of the proposed method is a reduction in the search space, and thus, speedier problemsolving. Simulations showed that the use of the proposed method leads to better behavioural quality of a transformer winding. The simulation results of the previous and proposed methods were compared with the help of a 20/0.4 kV, 1600 kVA transformer. This comparison showed the accuracy and superiority of the proposed method.