Calculation of Voltage Unbalance in Transmission Systems due to AC Railway Operation: A simplified Methodology Using Network Admittance Matrix

Athanasios Stamatopoulos, Henrik Vikelgaard, Hesam Khazraj, Filipe Miguel Faria da Silva, Claus Leth Bak

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Abstrakt

Modern AC railway is well known for introducing large asymmetrical loads which can lead to considerable levels of voltage unbalance in power transmission systems. Unbalance assessment is often limited to a single traction substation contribution and only at the connection point. However, as unbalance propagates from the railway feeding nodes through the electric network, interactions between different traction loads can be significant, and therefore should not be neglected. Three-phase power flow calculations implemented by power systems software can be used for this kind of studies. As an alternative, this paper proposes a simplified but efficient methodology for calculating voltage unbalance through the entire system due to one or multiple ac traction loads. The main idea behind this approach is the simplification of the power flow problem into a system of linear equations which can be solved using the admittance matrix of the network. The good accuracy and the straightforward application of the suggested method can make it particularly useful in planning activities of railway operators.
OriginalsprogEngelsk
TitelProceedings of the IEEE 18th International Conference on Environment and Electrical Engineering and 2nd Industrial and Commercial Power Systems Europe
Antal sider6
Udgivelses stedPalermo, Italy
ForlagIEEE Press
Publikationsdatojun. 2018
Sider1-6
Artikelnummer8493488
ISBN (Trykt)978-1-5386-5187-2
ISBN (Elektronisk)978-1-5386-5186-5
DOI
StatusUdgivet - jun. 2018
BegivenhedIEEE 18th International Conference on Environment and Electrical Engineering and 2nd Industrial and Commercial Power Systems Europe - Palermo, Italien
Varighed: 12 jun. 201815 jun. 2018
https://www.eeeic.net/eeeic/

Konference

KonferenceIEEE 18th International Conference on Environment and Electrical Engineering and 2nd Industrial and Commercial Power Systems Europe
LandItalien
ByPalermo
Periode12/06/201815/06/2018
Internetadresse

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  • Citationsformater

    Stamatopoulos, A., Vikelgaard, H., Khazraj, H., Silva, F. M. F. D., & Bak, C. L. (2018). Calculation of Voltage Unbalance in Transmission Systems due to AC Railway Operation: A simplified Methodology Using Network Admittance Matrix. I Proceedings of the IEEE 18th International Conference on Environment and Electrical Engineering and 2nd Industrial and Commercial Power Systems Europe (s. 1-6). [8493488] IEEE Press. https://doi.org/10.1109/EEEIC.2018.8493488