The electrical load flows and the energy consumption within railway power supply networks depend on the running trains and the power supply system characteristics. Simulation of railway power supply comprail 2008 simulation of railway power supply systems why. The present invention relates to a kind of electric railway at tractive power supply system. Operational and safety considerations for light rail dc. Voltage levels normally follow the catenary systems below 36 kv. In the most frequently used system, the railway electricity power is supplied from the public high. Current ac electrified railway tractive power supply system mainly adopts direct feeding system, bt power supply mode and three kinds of power supply modes of at power supply mode. The book on power supply installation in electrical traction was brought out by institution of railway electrical engineers iree long back.
I hope that the information given in this handbook will improve the knowledge of signal personnel and help them in maintaining the power supply system. Our shared objectives are to provide a safe and accessible railway power supply solution for onboard power systems. There are two classes of the coaches called conventional and lhb being manufactured at. The need of increasing its capacity has evidenced the. A novel power flow algorithm for traction power supply systems. Power system layout of wagons for reefer container transport as previously stated, the electrical energy for powering reefer containers is provided by the supply vehicle the locomotive and is.
A leader in railway systems our compact and lowweight transformers fully comply with the customers specifications. Here the reason for transmitting voltage at 25 kv and not normal 240415v or other ht supply are. The newly developed energy simulation module called openpowernet works. The new developed energy simulation module called openpowernet works together. Traction power facilities california highspeed rail. Modelling of rail traction and power distribution systems.
Our product portfolio includes traction substations that feed and distribute power to the lines. A power supply system for the railways must provide electricity to locomotives and multiple units for traction so these units can operate without having an onboard storage of energy, like diesel or steam engines. By allowing the operation of a large railway system to be simulated on a personal computer. The supply authorities supply power at 220211066 kv extra high voltage ehv at each traction substation which is owned, installed, operated and maintained by the railways. Railway technology today 3 edited by kanji wako railway electric power feeding systems yasu oura, yoshifumi mochinaga, and hiroki nagasawa introduction electric power technology in the railway industry refers to the means of supplying goodquality electric power to the electric motors. In this paper the methods of electrification supply system are discussed which are direct current supply. On the use of graph theory for railway power supply. The typical pq problems in highspeed railway hsr are the unbalance, reactive power, harmonic. Case study bernmobil railway power supply systems english pdf reference case study case study wiener linien railway power supply systems english pdf reference case study delhi metro rail corporation limited dmrc phase 1,new delhi, india turnkey electrification solution english pdf reference case study.
Ltk engineering services n overview is presented of an integrated approach to operational and safety issues when. A hybrid railway power conditioner for traction power supply system ningyi dai, kengweng lao, manchung wong electrical and computer engineering department university of macau macau, p. Optimal electromagnetic hybrid negative current compensation. A description of the design parameters may be found in the california highspeed train project basis of design report. Electric railways, as an environmentally friendly and efficient. There are several different electrification systems in use throughout the world. Railway power supply system models for static calculations in a modular design. The nonlinear and dynamic natures of the modern trains make the calculation and evaluation of such power quality pq problems quite a di. If for some reason, it is detached, there is no source of power, therefore, one power car has to remain in the system.
Railway signalling equipment power system earthing rail. Since, lot of changes have taken place in the field of power supply installation, it has become necessary to incorporate the changes in this volume. With its wide range of products, solutions and services, abb assists operators, consultants, general contractors and epcs in designing, building and operating reliable, cost effective and energy efficient. In contrast to public energy distribution systems there are moving energy consumers with a timedependent power demand picking up and recovering. Railway technology today 3 edited by kanji wako railway. This book explores the electric railway systems that play a crucial role in the mitigation of congestion and pollution caused by road traffic. Railway power supply voltage systems originating from the beginning of the 20th century, four major railway power supply system exist. Pdf railway electrification systems and configurations. Financial viability of different systems of power supply. The voltage situation as well as the network structure influence the. Railway power system provides power supply for the stations along the railway and vehicles control system and it is directly related to the safe running of the locomotive.
Dc 3 kv was introduced in the twenties, to increase the range. Head on generation hog a step towards energy efficiency. The first main objective of this article is to classify and describe the principal electrical railway power supply systems existing and the most important proposals for their improvement found in. Third rail systems can be designed to use top contact, side contact or bottom contact. Third rail is more compact than overhead wires and can be used in smallerdiameter tunnels, an important factor for subway systems. The ehcs is made up of a smallcapacity railway static power conditioner rpc and a largecapacity magnetic static var compensator msvc. Railway power supplies should ensure uninterrupted functioning, reliable and safe electric vehicle traction. To become the reliable power partner has been the motivation for mean well to grow continuously. Railway power supply system models for static calculations.
However, the minimum voltage is higher to ensure the power supply. These systems still require a power supply but it only needs to supply a constant voltage to the rails. Power supply system of indian railway coaches railelectrica. Analysis of energysaving strategies in railway power. Railway power supply system models for static calculations in.
The track electrification refers to the type of source supply system that is used while powering the electric locomotive systems. Traction power electrification system investigation report washington metropolitan area transit authority. Power supplies for railway applications on the rails to 2020. The tes for a typical modern light rail or street car system includes an overhead contact system ocs, traction power substations and feeder cables, together with associat ed substation protective. Railway power supply system models for static calculations in a modular design implementation usabilityillustratedbycasestudiesofnorthernmalmbanan ronnyskogberg masterofsciencethesis royalinstituteoftechnology schoolofelectricalengineering electricpowersystems stockholm,sweden,20 supervisors. Railway transportation systems for a comfortable future. Design of power supply system in dc electrified transit. Powerelectronics issues of modern electric railway systems. The major elements of a railway signalling power system are the power sources, the distribution network and electrical loads sometimes referred to as currentusing equipment. These are mostly used in mission critical application or at important places like airports, refineries, railway station etc.
For any system that depends on sophisticated electronics, everything begins with the power supply. It can be used as an energy prognosis and analysis tool as well as for the planning and optimisation of power supply installations. Optimal railroad power supply system operation and design. For this reason the idea was to create a plugin simulation module for railway power supply networks using the advantages of an existing commercial railway operation simulator. Railway power supply system models for static calculations in a modular design implementation usabilityillustratedbycasestudiesofnorthernmalmbanan. The railway power supply system also uses a singlephase design to transfer. Design of power supply system in dc electrified transit railways.
This paper presents the status of the entire supply system of railway electrification. Sep 20, 2014 3 the idea can be applied in several ways to provide a traction power based electrical power supply system for the utilities. Likewise, we execute the specifications for all the onboard electrical components, traction system, control, auxiliary power supply, communications. Traction power supply simulation system of urban rail transit in the paper, the train traction calculation and dc traction power supply simulation are used to analyze the operation process of the train on traction power supply system, the changes of speed, power, position and voltage of. Secondly, this research provides railway risk assessment methods, based on the combination of fmea and fta, to assess all of the potential hazards that threaten the. Electrical railway transportation systems wiley online books. For decades, abb has supplied worldwide traction power supply systems to deliver power to the line and power to the supporting infrastructure. The power supply network is composed of a high voltage network fed with ac linked to a traction network fed with dc by traction substations. Hog system is considered to be the most economical for the reason the cost of generation is minimum, but the issue is that the head on locomotive is not wedded to the train. Pdf hong kong mass transit railway power supply system. English pdf leaflet abb dc railway infrastructure line card english pdf leaflet enviline dcgear brochure english pdf brochure enviline aru automatic receptivity unit english pdf brochure enviline ers energy recuperation system english pdf brochure enviline ess energy storage. Pdf several different type of railway traction electric power system configurations have been used in the usa and all over the world. With this model even if one unit fails the other power supply will keep the system working. The highest voltage is same for indian railways and shinkansen.
Simulation of railway power supply systems openpowernet. The calculation of the various parameters forming the whole system, from the power substation, through the catenary, trolley, rail and feeder line, to the train, were gotten from. Pdf railway electrification is experiencing a very important transformation process today. Operational and safety considerations for light rail dc traction electrification system design kinh d. Dc traction power supply mv switchgear for railway power.
This article discusses all aspects of elec tric power supply systems for railways, ranging from the history of electrification of japanese railways to todays sophisti. Operational and safety considerations for light rail dc traction electrification system design. In this system, the current is mainly carried between the overhead line and a feeder transmission line instead of the rail. The phase i of california highspeed train project chstp to be implemented between san francisco and anaheim will be a 520 routemiles long stateoftheart rail system providing intercity travel with modern highspeed trains running at speeds up to 220 miles per hour. Apparatus which helps boost the ocs voltage and reduce the running rail return current in the 2 x 25 kv autotransformer feed configuration. Jan 19, 2016 to achieve economical compensation for the hugecapacity negative sequence currents generated by highspeed railway load, an electromagnetic hybrid compensation system ehcs and control strategy is proposed. The electrical load flows and the energy consumption within railway power supply networks depend on the running trains and the power supply system.
Why do indian railways use 25 kv ac supply instead of the. How to choose the right transformer for your model trains understanding electrical supplies and controls. Hong kong mass transit railway power supply system. The railway system division, in its commitment to future progress, has consistently achieved technological breakthroughs on three systems that are shaping the future worldwide. Our inhouse simulator is able to calculate various railway system conditions with remarkable accuracy. Cn101462501b at traction electric power supply system of 27.
This is a topical issue that is being debated within the railway community which on the one hand wants to modernize its power supply systems. The accuracy of the simulation was verified by a large number of real time measurements. The first main objective of this article is to classify and describe the principal electrical railway power supply systems existing and the most important proposals for their improvement found in the literature. Openpowernet simulation of railway power supply systems prof. A hybrid railway power conditioner for traction power supply.
The railway power supply system also uses a singlephase design to transfer power to the. Railway engineering is a multifaceted engineering discipline dealing with the design, construction and operation of all types of railway systems. The power supply voltage is often transformed down to a lower voltage to minimise voltage drop when distributed over longer distances. Electric railways use either electric locomotives hauling passengers or freight in separate cars, electric multiple units passenger cars with their own motors or both. Get power supply unit 12v24vdcpowersupply forsecurity. These technologies are already available, but there is a need of analyzing their. In this paper the methods of electrification supply. Abstract urban rail systems such as subways and trams transport millions of people every day, o ering a high level of service. A hybrid railway power conditioner for traction power. Indian railways have 46,038 various types of coaches excluding emus and memu coaches and around 3000 of new coaches are being added annually to the system. Modelling of rail traction and power distribution systems derek smith business development director daniel ting senior power engineer etap automation. Railway applications power supply and rolling stock technical criteria for the coordination between power supply substation and rolling stock to achieve interoperability required by directive 200857ec. Pdf energyefficiencyofrailtransportpowersupplysystem.
Paper open access the modeling and simulation of dc. Our experienced engineers are also there to provide consultation and offer customeroriented solutions. The system which use electrical power for traction system i. Choosing the right transformer for your model trains. Power system layout of wagons for reefer container transport as previously stated, the electrical energy for powering reefer containers is provided by the supply vehicle the locomotive and is distributed to wagons through the train busbar. Traction power electrification system investigation wmata. Design of power supply system in dc electrified transit railways influence of the high voltage network denis seimbille kth royal institute of technology electrical engineering. Openpowernet simulation of railway power supply systems. Federal transit administration december 9, 2016 8 new insulators that can be removed for cleaning and then reinstalled. A railway electrification system supplies electric power to railway trains and trams without an onboard prime mover or local fuel supply. The railway receives 3phase power supply from the supply authority at a single point near the grid substation from where the railway runs.
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