Simulation of railway power supply comprail 2008 simulation of railway power supply systems why. Modelling of rail traction and power distribution systems. The plan is intended to serve as a frame of reference for future design refinements and as a. The system which use electrical power for traction system i. Finding this a little too dangerous, siemens soon adopted the overheadelectric wires. These are independent of the contact system used, so that, for example, 750v dc may be used with either third rail or overhead lines the latter normally by trams. The network variability and nonlinearity due to the recti.
Power supply installation in electric traction irieen. The permissible range of voltages allowed for the standardised voltages is as stated in standards bs en 50163 and iec 60850. Traction manual containing procedures and practices to be followed uniformly throughout indian railways, was published for the first time in 1972. Alternative traction power distribution systems within the urban environment the means of distributing traction power, i. Railway is a largest means of transportation in india and it is ranked in the world as fourth largest railway network. Traction current collection system which uses an additional rail to transmit. Overhead equipments this is an overhead wire of special cross section. Guide system design to assure conformance to the operating intent. One traction increasing apparatus includes an extra track member for increasing the distance between upper and lower track surfaces that support the drive wheels and lower wheels, respectively, of the vehicle. Supply voltages of traction systems iec 60850 railway applications. Sibas is a platform and the units used in wdg4 wdp4 locomotives have the following sub units cards. Railcar traction inverter with new standardized design pdf 1. California high speed train project traction power 2x25kv autotransformer electrification system, r2 1. 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.
California high speed train project traction power 2x25kv autotransformer electrification system, r2. Trains that are powered by storage batteries and use a hybrid drive system have fewer mechanical. Nov 30, 2015 a traction system that doesnt use electrical energy for the movement of vehicle at any stage is referred as nonelectric traction system. Code of practice for earthing of power supply installations for 25kv, ac, 50 hz. Our locos move the nation ir purchased 4000 hp wdg4 and wdp4 locomotives from general motors, usa in 1995 and 1996.
There are many other voltage systems used for railway electrification systems around the world, and the list of current systems for electric rail traction covers both standard voltage and nonstandard voltage systems. The seminar report and electric traction system ppt briefly discusses the requirements, types, supply system, traction motors, railway electric locomotives, braking system, advantages and disadvantages and recent trends. Traction systems for locomotives and high speed applications. Electric railways, as an environmentally friendly and efficient. Operational and safety considerations for light rail dc.
Ppt electric traction system powerpoint presentation free. During the field tests for the verification of coordination of surge arresters for protection of dc 3 kv railway electric traction system, two types of spds which are currently used at pkp polish railway lines, inc. Download electric traction systems seminar report with ppt. Coordination of surge arresters in dc 3 kv railway. Define the system and operating requirements for assuring service dependability and system availability. The railway system division, in its commitment to future progress, has consistently achieved technological breakthroughs on three systems that are shaping the future worldwide. Electric traction 1701 however, the steam locomotive suffers from the following disadvantages.
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. To study the ess size, location and control, it is necessary to develop a sophisticated voltage model capable of supporting multiple train simulations. The main reason for 25kv voltage used in railway is, that 25 kv ac more economical than 1. Traction power electrification system investigation wmata. The new, 160 mile long amtrak northeast corridor railway electrification project has four supply substations that connect 115 kv utility power to the 55 kv singlephase, ac traction power system. Abb is the expert for traction converters, motors, transformers, and complete traction chain solutions. It can also be defined as the railway vehicle that provides the necessary traction power to move the train is referred as the traction or locomotive. Urban rail systems such as subways and trams transport millions of people every day. The unbalance has undesirable effects on the generators of the supply authorities and equipment of other consumers. Electric traction has the distinct characteristics of attracting traffic by b routes and thus very slowly traction system starts. Thanks to multilevel technology, it compensates for the reactive power of the rail system and produces an extremely small amount of feedback to the grid.
Completion of traction motor and controller for the japan. Third rail or conductor rail placed alongside the rail track. This chapter presents a general description of the elements that characterize a railway electric transportation systems. A railway traction vehicle that does not rely on wayside power supply e. We update the railway technical website from time to time. Electric traction was introduced on indian railways in year 1925 on1. Design and testing of 25 kv ac electric railway power. Why 25kv is used in railway traction system electrical4u. Code for bonding and earthing for 25 kv, ac, 50 hz, single phase traction system. Traction power facilities california highspeed rail.
It is still to notice that, regarding the classical systems used for railway vehicles, there are also. Railway works under the indian railway which is a stateowned organization of the ministry of railway. Introduction the 25 kv50 hz ac singlephase traction power supply system tpss is a widely adopted railway supply solution in china with a length of 121,000 km, and more than 19,000 km of them are the highspeed railways hsrs, which accounts for 60% of the. Railway electrification as a means of traction emerged at the end of the nineteenth century, although experiments in electric rail have been traced back to the midnineteenth century. The nonlinear and dynamic natures of the modern trains make the calculation and evaluation of such power quality pq problems quite a di. The steam engine drive is the best example of a non electric traction system and it is the first locomotive system used before the invention of actual electric traction systems. Light rail electrification operational and safety considerations for light rail dc traction electrification system design kinh d. Railway traction in india 1500 v dc overhead traction system used around mumbai delhi metro uses 25 kv ac overhead lines with ground level and elevated routes kolkata metro 750 dc third rail kolkata trams 550 dc overhead with underground conductors third rail system. It usually includes both powered and unpowered vehicles. Protection scheme for a new ac railway traction power system. Jun 18, 20 the year 1881 saw the birth of the first electric railway run by a germanengineer werner van siemens using both the rails to carry the current. Apparatus for use with a vehicle which runs along a track to increase the traction of the drive wheels so they do not slip when starting or climbing hills. Electrical modelling of a dc railway system with multiple.
A free powerpoint ppt presentation displayed as a flash slide show on id. Electric traction on indian railways indian railway employee. Railway electrification using 25 kv, 50 hz ac has become an international standard. Railway technology systems suburban rail, metro and rapid transit railways third rail shoegear systems toprunning system bottomrunning system siderunning system.
In contrast, dieselpowered trains use high amounts of energy for traction due to their heavyweight, which is a result of the onboard energy sources. This webinar introduces the latest etap solution for analysis and operation of rail traction systems. May 22, 2018 download electric traction systems seminar report with ppt. Unless the traffic to be handled is heavy, electric traction becomes uneconomical. Railway traction power analysis rail power system software. In deep and trustful partnerships with vehicle builders, refurbishers, and rail operators, we supply stateoftheart traction systems. Optimising power management strategies for railway traction. The single phase traction load causes unbalance in the supply system. The invention relates to an optimization modulation method of an electric railway train traction rectifying system. The voltage situation as well as the network structure influence the. Federal transit administration december 9, 2016 8 new insulators that can be removed for cleaning and then reinstalled.
The detailed terms of reference of the subcommittee is given in annexure i terms of. The traction system can be classified as nonelectric and electric traction systems. Customary units consistent with guidelines prepared by the california department of transportation and defined by the. Th e main components of the onboard electrical storage system are a traction circuit battery pack for energy storage and a stepup 6 5 20000 series rolling stock for sagami railway top and first. May 06, 20 traction mechanics is the study of train motion. Read track design handbook for light rail transit, second. Railway transportation systems for a comfortable future. Energysaving technology for railway traction systems using onboard storage batteries 3 company, hitachi started developing a series hybrid drive system in 2001 that combined a diesel engine and lithiumion batteries with the aim of reducing the fuel consumption and harmful exhaust emissions of. Initially, in 1957 indian railways adopted this system for their electrification scheme in collaboration with snfc. The most vital factor against electric traction is the initial high cost of laying out overhead electric supply system. Ltk engineering services n overview is presented of an integrated approach to operational and safety issues when. A novel power flow algorithm for traction power supply systems.
Ac traction power supply rail electrification home. Traction power electrification system investigation report washington metropolitan area transit authority. Pdf several different type of railway traction electric power system configurations have been used in the usa and all over the world. Design of power supply system in dc electrified transit railways. Pdf railway electrification systems and configurations.
A railway electrification system supplies electric power to railway trains and trams without an onboard prime mover or local fuel supply. The generation and transmission systems of supply authorities are 3 phase systems. Introduction of traction system in hindi, electrical. The mechanics involves conversion of overhead electrical powerdieselsteam power in rail horse power to haul a train encountering acceleration, train, grade, curve resistance and similarly braking.
The track electrification refers to the type of source supply system that is used while powering the electric locomotive systems. Pdf power quality issues in railway traction system. System such a diesel electric drive, electric drive etc. Also, measurements of electrical and magnetic fields inside the traction substation and in its vicinity were undertaken. Ppt electric traction system powerpoint presentation. In this paper the methods of electrification supply. Alternative traction power distribution systems within the.
In order to provide a dependable and cost effective traction power supply system tps for the california highspeed train project chstp the placement, size, and power conditioning of the. All ehv and 25 kv equipment is owned, installed, operated and maintained by the supply authority but 25 kv feeder circuit breakers alone are operated on remote control by the traction power controller tpc. There are many other voltage systems used for railway electrification systems around the world, and the list of current systems for electric rail traction covers both standard. Introduction of traction system in hindi, electrical traction and nonelectric traction system. Indian railways, the largest rail network in asia and the worlds second largest under one management are also credited with having a multi gauge and multi traction system. Railway traction systems alternating current rail transport. Rolling stock originally referred to the vehicles that move on a railway.
The optimization modulation method comprises offline calculation of an optimization switching angle and realtime control on a doubleclosedloop pwm pulsewidth modulation rectification algorithm. The typical pq problems in highspeed railway hsr are the unbalance, reactive power, harmonic. Train braking is a very complex process, specific to rail vehicles and of great importance by. Electric railways use either electric locomotives hauling passengers or freight in separate cars or electric multiple units passenger cars with their own motors. Introduction classification electric traction railway traction third rail system overhead system traction is defined as. Gaining traction english pdf technical publication abb 2. Thomas davenport, in brandon, vermont, erected a circular model railroad on which ran batterypowered locomotives or locomotives running on batterypowered rails in 1834. The choice of the system depends on the train service requirements.
California high speed train project traction power facilities, r2. Several different type of railway traction electric power system configurations have been used in the usa and all over the world. Operational and safety considerations for light rail dc traction electrification system design kinh d. Nowadays, dctraction systems are preferred and extensively used in. The electrical load flows and the energy consumption within railway power supply networks depend on the running trains and the power supply system characteristics.
Contents hide 1 why 25kv is used in railway traction system. Electrical modelling of a dc railway system with multiple trains. The basic aim is to give a detailed description of how the most generally used traction and engine systems work in presentday railways. Power failure for few minutes can cause traffic dislocation for hours.
Cn102739083a optimization modulation method of electric. The indian railways have been a great integrating force for more than 150 years. Railway technology today 3 edited by kanji wako railway. This traction power can be diesel, steam or electric power. Pdf this paper presents the status of the entire supply system of railway electrification. The rules of working on electric traction are detailed in indian railways manual of ac traction. Likewise, we execute the specifications for all the onboard electrical components, traction system, control, auxiliary power supply, communications, signalling, security and comfort, integrating said. It has helped the economic life of the country and helped in accelerating the development of. Thomas davenport, in brandon, vermont, erected a circular model railroad on which ran batterypowered locomotives or locomotives running on batterypowered. There are two main standards that define the voltages of the system. Energysaving technology for railway traction systems using.
1486 601 1479 960 941 690 556 1178 388 1040 700 443 118 294 1373 251 948 317 594 1243 1348 15 930 196 979 484 620 484 30 460 181 1052 21 1156 184 1264 156 1298