Research Information System
12th International Artemis Scientific Research Congress , Bucuresti, Romania, 28 - 30 May 2025, vol.1, no.1, pp.1-10, (Full Text)
This paper presents a comprehensive
framework for modeling three-phase power system components in phase coordinates
under harmonic frequency conditions. The increasing presence of nonlinear loads
and harmonic components in power systems necessitates accurate modeling of
system elements. Within this framework, transformers, transmission lines, series-parallel
components, as well as passive loads, are modeled in detail with respect to
harmonic frequencies. Transformer models incorporate considerations such as
connection groups, phase shifts, and leakage reactance’s, while nonlinear
effects like core saturation are not included. Transmission lines are
represented by harmonic impedance and shunt admittance matrices, accommodating
both symmetrical and asymmetrical configurations. Additionally, series and
parallel elements and passive loads are modeled using frequency-dependent
matrix formulations. The proposed modeling approach provides a robust
foundation for harmonic load flow analysis and power quality simulations,
contributing both theoretical rigor and practical applicability.