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Railway Traction Systems (RTS 2010), IET Conference on

Date 13-15 April 2010

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Displaying Results 1 - 25 of 42
  • Cover

    Publication Year: 2010 , Page(s): c1
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (115 KB)  

    The following topics are dealt with: modelling; simulation; drivers advisory systems; energy metering; data analysis; and electrification infrastructure. View full abstract»

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  • Table of contents

    Publication Year: 2010 , Page(s): 1 - 5
    Save to Project icon | PDF file iconPDF (261 KB)  
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  • What do we want from an electric railway?

    Publication Year: 2010 , Page(s): 1 - 27
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (1480 KB)  

    Presents a collection of slides covering the following topics: safety assurance; energy consumption; life cycle costing; system capacity; energy efficiency; and energy management. View full abstract»

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  • Traction for high speed rail: Identifying the optimal trade offs

    Publication Year: 2010 , Page(s): 1 - 49
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (3220 KB)  

    Presents a collection of slides covering the following topics: high speed rails; electric traction; railway electrification and locomotives. View full abstract»

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  • Standardisation or innovation - which is best?

    Publication Year: 2010 , Page(s): 1 - 22
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (210 KB)  

    Railways are in a curious position as regards standardisation. The geographical spread of a railway is largely restricted by the land mass on which it operates, and from a pure operational point of view, as long as your railway is capable of "inter-operation" with other railways with which it is physically connected, the need for standardisation is limited by those geographical constraints. View full abstract»

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  • Energy efficiency - the big picture

    Publication Year: 2010 , Page(s): 1 - 34
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (1305 KB)  

    Presents a collection of slides covering the following topics: energy efficiency; UK railway electrification; energy consumption; biodiesel; and macroeconomic. View full abstract»

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  • Onboard energy storage: The experience of a tramway manufacturer

    Publication Year: 2010 , Page(s): 1 - 45
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (3438 KB)  

    Presents a collection of slides covering the following topics: onboard energy storage; flywheel; NiMH batteries; and supercapacitors.. View full abstract»

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  • Sustainability and carbon reduction on electrified railways

    Publication Year: 2010 , Page(s): 1 - 9
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (371 KB)  

    This paper explores the various aspects of energy use on electric railways. It contrasts the energy consumed and carbon emissions produced by electric trains with diesels and cars. It explores the factors that influence energy use on trains train mass, passenger loading, speed, acceleration, and auxiliary loads. It discusses the advances being made in energy management and reducing railway carbon ... View full abstract»

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  • Optimising the power upgrade solution of the Sub Surface Railway

    Publication Year: 2010 , Page(s): 1 - 5
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (146 KB)  

    The London Underground Sub Surface Railway (SSR) is due for a major upgrade by 2018. The upgrade will include the procurement of new rolling stock, a new signalling control system, a significant increase in service frequencies, and a significant power supply infrastructure upgrade. Investigation of energy efficiency measures, such as optimal rolling stock power with use of coasting in the run prof... View full abstract»

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  • Development of an optimised energy efficient traction power system upgrade for London Underground's Northern Line

    Publication Year: 2010 , Page(s): 1 - 5
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (389 KB)  

    Introducing a Transmission Based Train Control signalling system on London Underground's Northern Line facilitates an appreciable increase in train service frequencies, impacting the existing 630 V DC 'four rail' traction power system. Extensive operational and traction power simulation modelling was undertaken to investigate train voltage regulation especially under electrical outage and perturbe... View full abstract»

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  • Simulation of energy efficiency improvements on commuter railways

    Publication Year: 2010 , Page(s): 1 - 9
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (1073 KB)  

    Railway networks consume large amounts of energy and, as a result, are the cause of a significant amount of CO2 and other harmful gas emissions. British railways strive to comply with objectives set by the European Rail Research Advisory Council and the Committee on Climate Change. Improvements in the operation of railway networks through the use of energy efficiency regimes can decreas... View full abstract»

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  • Dynamic load modelling of electric locomotive for power quality assessment of utilities

    Publication Year: 2010 , Page(s): 1 - 5
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (107 KB)  

    The AC 25 kV electric railways with DC drive locomotives are one of the main harmonic pollution sources of electric power grids in China. To assess the power quality of the railway supply networks needs to model not only the fundamental currents of the trains but also their harmonic contents. It is difficult to simulate accurately the dynamic current waveforms of an electric locomotive running on ... View full abstract»

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  • Optimal balancing of large single-phase traction load

    Publication Year: 2010 , Page(s): 1 - 6
    Cited by:  Papers (1)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (2079 KB)  

    Traction load results in voltage unbalance. Steinmetz method for balancing traction load has disadvantage required high compensation capacity. This paper presents a model with optimal compensation capacity for balancing traction load. According to the mathematical analytic solution of the optimal model, comparisons between the optimal results and that of Steinmetz method are conducted with MATLAB,... View full abstract»

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  • Modelling of AC feeding systems of electric railways based on a uniform multi-conductor chain circuit topology

    Publication Year: 2010 , Page(s): 1 - 5
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (111 KB)  

    AC power feeding systems of electric railways can be viewed as a multi-conductor chain circuit. All electrical elements along the railway, even including the short circuits and conductor breaks, can be described as series or shunt elements. According to the chain circuit topology, the mathematical model of the whole feeding system, i.e. the admittance matrix, can be assembled conveniently by appro... View full abstract»

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  • Investigating discontinuous electrification and energy storage on the northern Trans-Pennine route

    Publication Year: 2010 , Page(s): 1 - 9
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (1563 KB)  

    In July 2009, the UK government announced plans to electrify the Great Western Main Line and the line between Liverpool and Manchester. It has been widely argued that railway electrification is needed on more routes, but it is more difficult to construct a financial case for doing so. One such case is the heavily-used Trans-Pennine route from Manchester to Leeds via Dewsbury and Huddersfield. The ... View full abstract»

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  • Coasting boards vs optimalcontrol

    Publication Year: 2010 , Page(s): 1 - 5
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (606 KB)  

    Freightmiser is a proven in-cab driver advice system that provides information to train drivers to help them drive efficiently and stay on time. The system has demonstrated fuel savings of up to 22% on a wide variety of railways, including: (1) bulk grain trains (2) long-haul freight trains (3) high-speed intercity passenger trains (4) slow roll-on-roll-off trains . The information provided to the... View full abstract»

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  • A simple in-cab schedule advisory system to save energy and improve on-time performance

    Publication Year: 2010 , Page(s): 1 - 5
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (133 KB)  

    Halcrow and Unipart Rail have developed and are trialling a simple in-cab system which continually advises train drivers of the train's time with respect to a pre-calculated time-distance profile. The profile is set up to save energy by making use of unused recovery time in the timetable. The recovery time is used up at the end of each inter-station journey by "coasting", i.e. reducing power to id... View full abstract»

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  • Analysis of energy consumption and traffic flow by means of track occupation data

    Publication Year: 2010 , Page(s): 1 - 7
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (720 KB)  

    The paper presents a new approach to railway traffic analysis. Track occupation data is used to reconstruct the speed profile of the train and in a second step its energy consumption. The speed reconstruction algorithm is based on non-linear least squares optimisation and a simplified model of train motion. The engineering effort to make this method broadly applicable is presented as well as the t... View full abstract»

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  • Energy monitoring on the Virgin Pendolino trains

    Publication Year: 2010 , Page(s): 1 - 5
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (127 KB)  

    The Virgin Pendolino trains, manufactured and maintained by Alstom, have revolutionised the performance of the West Coast Main Line route since their introduction in 2003. Energy monitoring was recognised as an important factor from the outset and the train specification included a requirement to measure the energy consumed and regenerated by the train. An extended trial of an independent energy m... View full abstract»

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  • Monitoring the energy consumption in DC railways

    Publication Year: 2010 , Page(s): 1 - 4
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (377 KB)  

    Low voltage DC powered railway systems have significant losses in the power network. This paper presents interim results from a project which aims to measure simultaneously the power output from substations and power input to vehicles. Data have been recorded in initial instrumentation test runs on both a vehicle and two substations. The instrumentation system performed adequately and the quality ... View full abstract»

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  • Interfacing electrification and system reliability

    Publication Year: 2010 , Page(s): 1 - 6
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (61 KB)  

    Integration is the term given to ensuring that the different elements of an electrified railway operate together to achieve the desired result. This is particularly problematic where interfaces exist between the high power electrification distribution or traction systems, and the low power signalling and communications control systems. The challenge of integrating the electrical systems will not b... View full abstract»

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  • Mainline electrification as part of the railway system

    Publication Year: 2010 , Page(s): 1 - 5
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (66 KB)  

    This paper identifies the major railway subsystems and how they are affected by an electrification programme. Management activities to ensure the objectives are met will be described for the whole life cycle from the initial intention to electrify through design, installation, commissioning and operating to renewal/decommissioning. The consequences of treating electrification as just an “ad... View full abstract»

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  • Earthing and bonding of 2×25 kV AC autotransformer system in twin-tunnels

    Publication Year: 2010 , Page(s): 1 - 5
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (79 KB)  

    For a sub-surface 2×25kV AT system without traction earth mats inside the twin-tunnels, it is feasible to achieve a good earthing and bonding performance inside the twin-tunnels and meet the proposed stringent railway standard. View full abstract»

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  • Dealing with operational constraints in energy efficient driving

    Publication Year: 2010 , Page(s): 1 - 7
    Cited by:  Papers (1)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (1101 KB)  

    The paper presents algorithms for energy-optimal train control which can be applied in Driver Advisory Systems. As the train driver shall be diverted as few as possible by this system, a constructive two-level algorithm based on the theory of optimal control and a gradient method is presented which delivers the energy-optimal regime sequence with the minimal number of regime changes. The integrati... View full abstract»

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  • OptiDrive: A practical approach for the calculation of energy-optimised operating speed profiles

    Publication Year: 2010 , Page(s): 1 - 8
    Cited by:  Papers (1)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (257 KB)  

    ENOTRAC has developed a desktop simulation tool, codenamed OptiDrive, for the computation of energy-optimised operating speed profiles. OptiDrive solves the following problem: "A train must travel from A to B in a given time using as little energy as possible. What speed profile should it follow considering track and train characteristics as well as operating constraints?" OptiDrive implements a p... View full abstract»

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