Work

Generalised harmonic domain analysis for transformer core hysteresis modelling

Year: 2025

Type: article

Abstract: This work addresses a limitation in power system harmonic analysis due to the challenges of converting complex time domain models to the harmonic domain. A linear approximation, in the form of a Norton equivalent, is the simplest model necessary to describe harmonic coupling. This work expands how the Norton equivalent can be created. A general approach is developed from first principles, where a methodological starting point is established for linearising all models. Its versatility is demonstrated by converting a model of transformer magnetising current hysteresis. For this purpose, a modification is made to the classic Preisach model of hysteresis for time-periodic input and output. A new data driven method fits test results of a small transformer to the Preisach model. Results show an improved accuracy in the Norton equivalent’s frequency coupling matrices over models that only consider magnetic saturation.

Source: Electric Power Systems Research

DOI: 10.1016/j.epsr.2025.111987

Authors: Josh Schipper, Radnya Mukhedkar, Neville Watson, Veerabrahmam Bathini, Jan Meyer

Institutions: University of Canterbury, Institute of Electrical Power Systems and High Voltage Engineering, Technische Universität Dresden

Language: English

Topic: Power Quality and Harmonics

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: hybrid

Estimated APC paid: $2,810