Estimation of Equivalent Circuit Parameters of Single-Phase Transformer by Using Chaotic Optimization Approach

Martin Ćalasan, Danilo Mujičić, Vesna Rubežić and Milovan Radulović
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Martin Ćalasan: Faculty of Electrical Engineering, University of Montenegro, 81000 Podgorica, Montenegro
Danilo Mujičić: Electric Power Utility of Montenegro, HPP “Perućica”, 81400 Nikšić, Montenegro
Vesna Rubežić: Faculty of Electrical Engineering, University of Montenegro, 81000 Podgorica, Montenegro
Milovan Radulović: Faculty of Electrical Engineering, University of Montenegro, 81000 Podgorica, Montenegro

Energies, 2019, vol. 12, issue 9, 1-15

Abstract: This paper deals with parameter estimation of single-phase transformer equivalent circuit by using Chaotic Optimization Approach (COA). Unknown transformer equivalent circuit parameters need to be accurately estimated for the best possible matching between the measured and the estimated transformer output characteristics (for example, output power—load resistance characteristic). Unlike literature approaches which apply different estimation techniques and are based either on the nameplate data or the load data obtained from experiments, in this paper the use of COA is evaluated on both types of input data. For two single-phase transformers, different with respect to machine power and voltage levels, the COA-based parameter estimation is compared to various literature techniques as well as to classical method based on open-circuit and short-circuit tests. The results show that COA outperforms other approaches in terms of average error between the measured and the estimated values of the primary current, secondary current and secondary voltage at full load, or between the measured and the estimated output characteristics. The effectiveness of COA is additionally confirmed through its application on laboratory 2kVA, 220 V/110 V, 50 Hz single-phase transformer.

Keywords: Transformer; Chaotic Optimization Approach; parameter estimation (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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