Research on Bilateral Power Supply Technology of Electrified Railway

Wang, Fang; Wang, Mingli; Zhang, Shanshan

doi:10.1109/aeees48850.2020.9121515

Cited by 5 publications

(1 citation statement)

References 4 publications

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“…In this way, no power distribution through traction power supply is realized, which has no impact on the power quality of the public grid, but the investment cost is huge [11]. In Russia, part of the universal speed railway adopts the bilateral power supply technology, which cancels the electrical phase division of the subdivision between adjacent traction substations [12]- [13]. Two adjacent traction substations can simultaneously transmit electrical energy to the train [14].…”

Section: Introductionmentioning

confidence: 99%

Study on the electromagnetic ring network in bilateral power supply mode of electrified railway

Wang,

Zhou

et al. 2023

5th International Conference on Information Science, Electrical, and Automation Engineering (ISEAE 2023)

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The electromagnetic loop network problem of power system is a kind of power network problem that evolves with the development of power grid. In order to avoid the further spread of the problems caused by the electromagnetic ring network, the open-loop operation mode is widely used in the power grid below 500kV to reduce the impact on the power system. In electrified railways, the same phase connection of adjacent traction substations can be achieved through bilateral power supply technology, which increases the terminal voltage level of the traction network. However, an electromagnetic loop network is formed at the 27.5kV traction feeder. The purpose of this paper is to study the generation mechanism of electromagnetic ring network and its influence to power system under bilateral power supply technology. Theoretical support and technical guidance are provided for engineering practice and trial operation.

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Section: Introductionmentioning

confidence: 99%

Study on the electromagnetic ring network in bilateral power supply mode of electrified railway

Wang,

Zhou

et al. 2023

5th International Conference on Information Science, Electrical, and Automation Engineering (ISEAE 2023)

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Power Quality Analysis of Weak Power Grid Under the Connection of Bilateral Power Supply Traction Load

Liu¹,

Gou²,

Liu³

et al. 2022

Lecture Notes in Electrical Engineering

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Low-frequency oscillation of train–network system considering traction power supply mode

Liu,

Lyu,

Chang

et al. 2024

Railw. Eng. Sci.

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The low-frequency oscillation (LFO) has occurred in the train–network system due to the introduction of the power electronics of the trains. The modeling and analyzing method in current researches based on electrified railway unilateral power supply system are not suitable for the LFO analysis in a bilateral power supply system, where the trains are supplied by two traction substations. In this work, based on the single-input and single-output impedance model of China CRH5 trains, the node admittance matrices of the train–network system both in unilateral and bilateral power supply modes are established, including three-phase power grid, traction transformers and traction network. Then the modal analysis is used to study the oscillation modes and propagation characteristics of the unilateral and bilateral power supply systems. Moreover, the influence of the equivalent inductance of the power grid, the length of the transmission line, and the length of the traction network are analyzed on the critical oscillation mode of the bilateral power supply system. Finally, the theoretical analysis results are verified by the time-domain simulation model in MATLAB/Simulink.

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Research on Bilateral Power Supply Technology of Electrified Railway

Cited by 5 publications

References 4 publications

Study on the electromagnetic ring network in bilateral power supply mode of electrified railway

Study on the electromagnetic ring network in bilateral power supply mode of electrified railway

Power Quality Analysis of Weak Power Grid Under the Connection of Bilateral Power Supply Traction Load

Low-frequency oscillation of train–network system considering traction power supply mode

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