Current-based Newton-Raphson power flow calculation for AT-fed railway power supply systems

Mongkoldee, Kritsada; Kulworawanichpong, Thanatchai

doi:10.1016/j.ijepes.2017.11.022

Cited by 14 publications

(11 citation statements)

References 15 publications

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“…Each profile represents a single run of a train on a specific track which may consist of multiple of sections. A similar approach can be found in [14], [30], [29], [35], [31], [22], [33], [16], [34].…”

Section: Autotransformer Modelmentioning

confidence: 99%

“…The system is much lighter from the computational point of view, but the accuracy of the calculation is lower since the effect of the inductive couplings is not negligible. On the other side, many authors propose or use very complicated models considering the couplings as it can be observed for instance in [31], [32], [7], [8], [33], [19], [34]. These models are very accurate but also complex from the point of view of their computational burden, which is a very important drawback for making extensive calculations.…”

Section: Mathematical Modelmentioning

confidence: 99%

“…4 (left), the electrical model of the traction substation for the single-voltage and bi-voltage cases are depicted respectively. The presented model is equivalent to the one using two voltage sources with series impedances which has been widely used by many authors, see for instance the references [22], [16], [25], [34], [33].…”

Section: B Substation Modelmentioning

confidence: 99%

See 2 more Smart Citations

High-Speed 2 × 25 kV Traction System Model and Solver for Extensive Network Simulations

Belaid

Arboleya

El‐Sayed

et al. 2019

IEEE Trans. Power Syst.

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In this work, a simplified model of a 2x25kV bi-level traction power system for feeding high-speed trains is presented. A Modified Nodal Analysis (MNA) based algorithm for solving the system with and adaptive damping factor is also explained. The main novelties of this work are the inclusion of train protections (over-current and over-voltage) in the model and the development of the MNA solving procedure that increases the stability and robustness of the iterative solving process. Another important feature of the model is that it can be easily adapted to a single voltage feeding systems by deactivation of specific parameters. The accuracy and performance of the proposed simulator is compared and verified relative to the derivative based solvers.

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Section: Autotransformer Modelmentioning

confidence: 99%

Section: Mathematical Modelmentioning

confidence: 99%

See 1 more Smart Citation

High-Speed 2 × 25 kV Traction System Model and Solver for Extensive Network Simulations

Belaid

Arboleya

El‐Sayed

et al. 2019

IEEE Trans. Power Syst.

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“…The value of the complex conjugate of the current

I_{train}^{*}

is related to the electrical complex power of the train through (9). The electrical complex power of the train is calculated in (6), (7) and (8) from the output data of the mechanical model [22]

S_{train} = U_{train} I_{train}^{*}

The traction transformer and the upstream high voltage network can be represented by an equivalent Thevenin circuit. Assuming that the high‐voltage grid is sufficiently robust, the equivalent impedance of the transmission grid can be ignored.…”

Section: Mathematical Modelmentioning

confidence: 99%

Influence of the rail electrification system topology on the energy consumption of train trajectories

Riego-Martinez

Perez-Alonso

Duque-Pérez

2020

IET Renewable Power Generation

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Electrically powered rail vehicles are considered one of the most energy‐efficient means of transport. Transport activity is responsible for a considerable part of global energy consumption. The transport industry is therefore obliged to develop strategies for more efficient energy use. Railway electrification systems transmit the electrical power supplied by substations to moving trains. However, part of the power supplied is consumed by the electrification systems and does not reach the trains. In this study, transmission losses in the 2 × 25 kV electrification system are evaluated. The 2 × 25 kV system is widely used in high‐speed and high‐capacity railway lines. Assessment of the performance of the 2 × 25 kV system is carried out by computer simulation of the power flows between the elements involved in train movement by means of simplified physical models. The results show that the reduction of transmission losses is a feasible way to achieve energy savings and to improve the energy efficiency in electrified rail transport. For this, it is essential to add the topology of the electrification system to the data considered in the design of the train trajectories.

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“…All parallel AT‐fed double‐line traction network is a total of 14 conductors with a multi‐conductors complex network [2]. Literatures [3–6] studied the power flow calculation of AT TPSS. However, the traction loads of TPSS is not considered in the power grid for power flow calculation, therefore the influence of the asymmetry and randomness of the traction power supply system on the power grid cannot be analysed.…”

Section: Introductionmentioning

confidence: 99%

Impact analysis of traction loads on power grid based on probabilistic three‐phases load flow

Che

Wang

et al. 2018

J. eng.

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Current-based Newton-Raphson power flow calculation for AT-fed railway power supply systems

Cited by 14 publications

References 15 publications

High-Speed 2 × 25 kV Traction System Model and Solver for Extensive Network Simulations

High-Speed 2 × 25 kV Traction System Model and Solver for Extensive Network Simulations

Influence of the rail electrification system topology on the energy consumption of train trajectories

Impact analysis of traction loads on power grid based on probabilistic three‐phases load flow

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