On the accuracy of detailed model inductance matrix estimation for air core winding
Abstract: Researchers have used various methods to determine the parameters of trans-former-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 de-termined 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 problem-solving. Simulations showed that the use of the proposed method leads to better beha-vioural quality of a transformer winding. The simulation results of the previous and pro-posed 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.
eISSN: 2300-2506 ; ISSN: 1427-4221