Rectifier Transformers in Electric Traction Substations ‐ Different Designs

Kulesz, Barbara

doi:10.3846/16484142.2005.9637998

Cited by 4 publications

(4 citation statements)

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“…The simulation of public transport supply system service was conducted using the Monte Carlo (Bartłomiejczyk, Połom 2017) method. The Monte Carlo method is based on the continuous repetition of a statistical experiment, which performs an analysis of the condition of the object using random input factors (Judek, Skibicki 2009;Hrbac et al 2015;Nicolau et al 2018;Kulesz 2005).…”

Section: Case Study -Introduction Of Smart Grid System Into Gdynia Trmentioning

confidence: 99%

Smart Grid Technologies in Electric Power Supply Systems of Public Transport

Bartłomiejczyk

2018

Transport

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Nowadays the issue of electric energy saving in public transport is becoming a key area of interest which is connected both with a growth in environmental awareness of the society and an increase in the prices of fuel and electricity. It can be achieved by improving the usage of regenerative breaking. In 2016 the Przedsiębiorstwo Komunikacji Trolejbusowej (PKT, Trolleybus Transport Company) in Gdynia began practical implementation of Smart Grid solutions within its trolleybus network. These activities constitute an element of the project ELIPTIC, realised by PKT within the scientific research fund Horizon 2020. The first stage of implementing intelligent network solutions was completed in 2016, and further activities are planned for the next few years. This paper presents a review of Smart Grid solutions which can be implemented in urban traction supply systems, describes the PKT experience concerning the implementation of Smart Grid solutions in trolleybus network supply system to date.

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Section: Case Study -Introduction Of Smart Grid System Into Gdynia Trmentioning

confidence: 99%

Smart Grid Technologies in Electric Power Supply Systems of Public Transport

Bartłomiejczyk

2018

Transport

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“…Each DC TS primarily consists of two groups of transformer and diode-rectifier pairs with a mutual phase shift of 15°, connected to the medium voltage (MV) grid. The two rectifier groups help divide the total load, naturally eliminating specific harmonics and decreasing the output voltage ripple [6,7]. Currently, two types of DC TS exist, which differ in their capacity and the types of transformers and diode rectifiers used.…”

Section: Current System Overviewmentioning

confidence: 99%

“…The required voltage is calculated from the train's position x(t) w.r.t a substation. x 1 (t) and x 2 (t) are calculated using Equations (7) and (8), where t and t s are the current and end simulation time.…”

Section: Topologies For Converting Unidirectional Substations Into Re...mentioning

confidence: 99%

Cost‐effective upgrade of the Dutch traction power network: Moving to Bi‐directional and controllable 3 kV DC substations for improved performance

Panda

Poikilidis

Nguyen

2023

IET Electrical Syst in Trans

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Traction power networks can significantly influence a country's national grid due to their significant power consumption and numerous coupling points. To modernise the ageing Dutch traction power networks and enhance their impact on the utility grid, this study explores practical and cost-effective approaches for upgrading existing 1.5 kV DC traction substations (TS) in the Netherlands into 3 kV bi-directional DC TS. After evaluating the benefits of a 3 kV bi-directional DC, two novel topologies are proposed that re-use the existing substation's components and reduce the need for higher investments. These topologies incorporate parallel voltage source converters (VSCs) to recuperate braking energy from the DC grid and transfer it back to the AC grid. Furthermore, the study investigates additional use cases for the VSCs, including improving DC TS's reliability during faults, reducing harmonics through active power filtering, compensating for reactive power, and supporting the integration of renewable energy sources into the DC grid. A comprehensive control strategy for the VSCs is also proposed based on a thorough analysis of their working methodology and functional modes. The feasibility and effectiveness of the proposed solutions are validated through scenario analysis relevant to the Netherlands' traction network, utilising both a Simulink model and an Opal-RT real-time simulator. This study serves as a starting point for the various stakeholders of the Dutch traction network in their journey towards modernising the current traction power supply. It has the potential to serve as a reference for reusing existing railway infrastructures to provide ancillary services and support the energy transition. K E Y W O R D Spower harmonic filters, PWM power convertors, rectifier substations, regenerative braking, traction | INTRODUCTIONThe rail transportation is one of the most efficient means of public transportation. Railway electrification in the 1800s was an important step in decarbonising the transportation sector, as electrification is crucial for the sustainability and efficiency of a country's transportation system. It leads to lower operating costs, reduced greenhouse gas emissions, and improved train performance, contributing to a more sustainable future for the transportation sector. In the future, electrified railways will be the only viable option for sustainability, making the interconnection between these systems and the national power grid

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“…In particular, the choice of ROCS in this research is one that we hope will become common in the near future because of its outstanding advantages. Furthermore, this will be a transparent scientific basis for choosing an effective power supply structure for the synchronous and sustainable development of urban railway transport networks [39][40][41][42][43].…”

Section: Introductionmentioning

confidence: 99%

Feasibility Study of Traction Power Supply for Medium-Capacity Rail System Based on Rigid Overhead Conductor Rail System: Case Study on Pham Van Dong Route in Ho Chi Minh City, Vietnam

Van,

Thai,

Hong

2024

Applied Sciences

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In this article, we advance a model for the traction power supply of a medium-capacity railway system along the major Pham Van Dong (PVD) arterial route situated in the northeastern sector of Ho Chi Minh City (HCMC), Vietnam. This study simulates an in-depth analysis of the carrying capacity and feasibility of traction power supply for this scenario based on a safe moving-block system utilizing Communications-based Train Control (CBTC). The research results show that the 750 V DC traction system uses a rigid overhead conductor rail system (ROCS) with distances between traction power stations of up to 6 km with double feeding. The system provides a service frequency of 36 trains per hour per direction, and has a transport capacity of up to 47,520 passengers per hour per direction. The implementation of this solution, as proposed, has the potential to improve traffic flow, reduce congestion, reduce environmental pollution, and provide a complete and modern urban railway network for HCMC. The system could also be implemented in other similar global scenarios. Additionally, this investigation also demonstrates the feasibility of applying the new ROCS to medium-capacity railway systems (MCSs), which have garnered increasing attention in recent years owing to their discernible advantages over extant systems. The outcomes of this study underscore the pragmatic nature of the proposed solution, which orients sustainable and integrated development in the realm of urban rail transport.

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Rectifier Transformers in Electric Traction Substations ‐ Different Designs

Cited by 4 publications

References 0 publications

Smart Grid Technologies in Electric Power Supply Systems of Public Transport

Smart Grid Technologies in Electric Power Supply Systems of Public Transport

Cost‐effective upgrade of the Dutch traction power network: Moving to Bi‐directional and controllable 3 kV DC substations for improved performance

Feasibility Study of Traction Power Supply for Medium-Capacity Rail System Based on Rigid Overhead Conductor Rail System: Case Study on Pham Van Dong Route in Ho Chi Minh City, Vietnam

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