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- Title
Modeling and Comparison of Traction Transformers Based on the Utilization Factor Definitions.
- Authors
Kalantari, Mohsen; Sadeghi, Mohammad Javad; Farshad, Siamak; Fazel, Seyed Saeed
- Abstract
Electric railways inject undesirable harmonics and large negative sequence component to the utility grid due to their essential characteristics (i.e. non-linear, non-sinusoidal, non-symmetrical, and non-continuity). Traction transformers with a special connection (i.e. Single-phase, V/V, Wye-Delta, Scott, and Le-Blanc) are one of the best solutions to limit the above drawbacks and also improve the efficiency and power factor of the utility grid. They have been selected on the basis of electrical performance, physical profile of the network, and economics issues. Traction load variation, negative sequence component, load harmonic currents, power factor, and efficiency as effective electrical parameters were investigated for aforementioned traction transformers. However, there are other influential and important parameters in the electrical railway systems which are not considered in the research works. Therefore, this paper defines these factors (utilization factors of the traction transformer and transmission line) as mathematical equations and then investigates the impacts of harmonic components and unbalance loading on these factors.
- Subjects
ELECTRIC transformers; ELECTRIC railway motors; AUTOMOBILE traction; ELECTRIC currents; ELECTRIC power factor
- Publication
International Review on Modelling & Simulations, 2011, Vol 4, Issue 1, p342
- ISSN
1974-9821
- Publication type
Article