Harmonic impedance studies of Swedish railway power system using wide-area modeling approach
Year: 2026
Type: article
Abstract: This paper presents a comprehensive framework for wide-area modeling and harmonic resonance assessment in the AC single-phase Swedish electric railway power system (ERPS). The methodology integrates the modeling of key elements of the catenary system, such as synchronous generators, transmission lines, transformers, and filters, while addressing the dynamic behavior of rolling stocks and inherent system uncertainties. Study cases, including Monte Carlo simulations, are developed to evaluate probabilistic scenarios and impedance variations across the network using nodal admittance modeling and frequency scanning. Key contributions include a method to model moving loads, a comprehensive approach to harmonic resonance analysis based on meshed grid characteristics of the ERPS, and an uncertainty assessment framework that highlights insights for system planning and mitigation actions. Discussion outlines future research directions for improved ERPS harmonic resonance studies.
Source: Railway Engineering Science
Authors: Rafael S. Salles, Sarah K. Rönnberg
Institution: Luleå University of Technology
Language: English
Topic: Power Quality and Harmonics
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: diamond
Funder: Trafikverket
Award: G4128682849
OpenAlex ID: W7124132186