In addition, with the support of the technical office, the principles of any system high speed, conventional, tramway. Overhead current capacity became limited without catenary so, it was compensated by underground parallel helper cables. The intent of this guide, along with ieee standard 524, guide to the installation of overhead transmission line conductors, is to provide guidance for an optimized installation of overhead conductors. Boom trucks boom trucks designed with controls mounted on the truck chassis and those equipped with pendant controls place the operator in direct contact with the ground. Page 28, figure 12 shows a class 373 eurostar, not a class 374 as described. Overhead contact line ocl, hard drawn copper contact wire, fatigue failure, dang vans criterion, finite element volume mesh. So the dropper distribution along the span must be accurately studied.
Transmission of power is done by either an overhead wire or by rails at ground level. Evaluation and calculation of overhead line impedance in. Overhead chargeable can di rectly be found out without com puting the above. The local dropper defect is the most common fault in the early service stage of the overhead contact line ocl system.
Take note if anything is different about the power lines, such as sagging when contact is made currency of this. Aluminium conductors have achieved wide acceptance all over the world for use in overhead transmission and distribution lines. Overhead line electrification for railways 5th edition 40464 downloads useful links. Our systems can reduce metal fatigue and improve the performance and safety of overhead catenary systems.
Pantograph and contact line system comprehensively introduces pantographs, contact lines and their interactions in many areas including geometrics, dynamics, materials, and electricshelpful to understanding the basic theories of interaction between pantographs and contact lines. Unlike conventional ocl monitoring systems, which detect contact wire positions using. We are confident that you will find a door and opener product to meet your needs. Page 24, figure 7 was taken at birmingham new street, not london euston. Boom trucks boom trucks designed with controls mounted on the truck chassis and those equipped with pendant controls place the operator in direct contact with. An overhead line typically has a wider easement footprint than an underground line. Overhead power lines at construction sites can be dangerous for the workers, especially when equipment such as cranes, cherry pickers, and high lifts are used.
Abstractoverhead contact lines have no constant elasticity along the span. Standard for distribution line design overhead these standards created and made available are for the construction of ergon energy infrastructure. Respect all overhead power lines and treat them as live contact your electricity company for. New monitoring technologies for overhead contact line at 400. These standards ensure meeting of ergon energys requirements. Recent investi preventing worker deaths and injuries from contacting overhead power lines with metal ladders summary workers risk electrocution when using metal ladders around energized, overhead power lines. Uses sicat master to plan the catenary design for the line and sicat candrop or sicat. The lightweight section insulators in the sicat 8wl5545 product line serve to separate overhead contact line systems into individual switch and feeder sections accessible by pantographs and therefore electrically insulate these sections from each another. Preventing worker deaths and injuries from contacting.
Overhead contact line suspensions for tramway our product range meet your demanding requirements suitable for use for both trolleybus and tramway compact and aesthetic design selfinsulating the newly developed suspension is fully compatible with existing systems complete system incl. Prognostics and health management for an overhead contact line. Figure 1 shows an overview of a typical span of rail overhead power line. New monitoring technologies for overhead contact line at 400kmh.
Unlike conventional ocl monitoring systems, which detect contact wire positions using either laser sensors or line cameras, the developed system measures. New monitoring technologies for overhead contact line at. The design process for overhead contact line systems ocs is very complex. Solutions for overhead contact line intertech engineering. Besides being economical, sicat contact line systems are widely known for their long service lives and consistently high quality factors which facilitate high quality pantograph passage and comply with national and international safety standards. It may take the form of a short insertion in the contact wire or that of an extended.
Specifically, this paper reports details of the videobased monitoring techniques that have been adopted to inspect the stability of overhead contact line ocl components at 400 kmh. Site specific advice on appropriate exclusion zones and safe stand off distances to apply these will vary according to the voltage of the overhead line and its construction possibility of temporarily making the line dead for duration of works. Overhead contact line elasticity optimization for railway. Prognostics and health management for an overhead contact. Contact force the vertical force applied by the pantograph to the overhead contact line. Ole overhead line electrification equipment, which supplies electric power to the trains. It is formed by an aluminium alloy profile, which accommodates the copper contact wire, with a great cross section for the current that allows operative ocs. Pdf dynamic performance of highspeed railway overhead. Overlap each length of the contact wire overlaps with the next so that the pantograph. Fatalities from contact with electricity in construction.
The remaining deaths occurred when nonelectrical workers contacted objects or machinery. Bearing in mind its elastic behaviour, the catenary model was directly generated in. Ole, overhead contact system, overhead line electrification for railways, overhead line equipment, overhead wiring system post navigation. Personal protective grounding of overhead distribution lines standard number. Hoseynpoor bushehr branch, islamic azad university, bushehr, iran. Validation of a new model for railway overhead line dynamics. Power line hazards awareness the national work zone. Maintaining safety of overhead catenary on the shinkansen. Physical contact does not have to be made for electrocution to happen from an electrical arc. He has nearly 20 years of experience in teaching and researching on basic theory of pantograph and contact line system, and has participated in the projects of design, construction and maintenance of chinese overhead contact line system. The ocs designer shall provide final design services for the overhead contact system that shall include, but not be limited to. Fatigue analysis of catenary contact wires for high speed.
Section 08 71 commercial door operators overhead door. This is the list of errors which exist in the free pdf download 5th edition. These mechanical connectors consist of service, parallel, and midspan types. An alarm to warn of overhead power line contact by mobile. Thanks for considering our wide array of overhead door residential, commercial and industrial doors, openers, operators and accessories to complete your home, business or remodeling project. Series 1 equipment is listed as using copper tin cusn contact wire. Alan baxter network rail guide to overhead electrification 2787albguneoh000001 february 2015 rev 10 1 of 52 1. New types of overhead catenary especially for new and up graded lines of the. He directed highspeed overhead contact line system vibration tests for highspeed railways such as beijingtianjin, wuhanguangzhou, zhengzhouxian, beijingshanghai, and construction of contact test bed of pantograph and contact line system in national laboratory in rail transportation. Recommendations for overhead contact line and pantograph. The overhead contact line is one of the systems employed to provide electrical power to electric locomotives that are connected to the overhead contact line using a structure called pantograph. Code of practice for the design, supply, construction and commissioning of 25kv ac traction overhead catenary equipment.
A defect or a failure of an ocl component may cause considerable delays, lead to important. Power line hazards awareness the national work zone safety. Typical electric current paths during an overhead power line contact incident. Dec 15, 2018 series 1 equipment is listed as using copper tin cusn contact wire. The rigid catenary is an overhead contact system ocs that can replace, with many advantages, the contact wire with sustentation wire, the third rail or the suspended bimetallic trail.
All ocs system support and registration assemblies such as cantilevers. He directed highspeed overhead contact line system vibration tests for highspeed railways such as. Contact with overhead power lines can result in serious injury and even death. Overhead power line contact 140 115 2 9 116 8 153 933 percent of fatal injuries 42% 35% 38% 40% 41% 46% 46% 41% 1.
Overhead conductor installation guide general cable. Wearing mechanism and service life of the overhead contact line. The objectoriented design of overhead contact line. The design of the overhead contact line in a railway system should be done in order to achieve the best currentcollection possible, either if it is a tramway system, a suburban system or a longer distance line commuters, regional trains and medium or long distance. Cantilever and steady arms are made of insulator materials which satisfy double insulating properties. A major part of technical requirements for all greenbrown field overhead catenary line projects in wa 25kv electrified railway network are documented into the code of practice. Network rail a guide to overhead electrification bath and north. An overhead line or overhead wire is used to transmit electrical energy to trains, trolleybuses or trams. They are used in overhead contact line systems in mass transit and main line railways. Dec 15, 2018 click the image, save the pdf and off you go.
Design of light rail transit overhead contact systems at complex. Overhead conductor installation guide recommended practices firs dition 1 introduction this guide provides suggestions for various methods, equipment and tools that have been found practical based on field experience during the installation of general cables transpowr bare overhead conductors on transmission lines. Contact lines rail electrification siemens mobility global. Contact with an overhead power line may cause the power to trip out temporarily and it may be reenergised automatically, without warning its important to remember that the vehicle may also become live if still in contact with an over head power line. The current collection system is an electric energy exchange interface between electric trains and traction substations. Ole, overhead contact system, overhead line electrification for. Installation, renewal and maintenance of overhead catenary. Kplc16c 1tsp060361specification for overhead line fittingspart 1 fittings for. It is the primary component in the flow of revenue for a utility and also. Sicat overhead contact line systems economy, reliability and high performance are the dimensions within which overhead contact line systems can be optimized for mainline railways. Their materials and designs have been selected so that a large number.
Improved design of an overhead rail current conductor for. Evaluation and calculation of overhead line impedance in distribution networks r. Integrates catenary, cantilevers and tension wheel assemblies into one system, includes electrical and mechanical testing system design phase. Single contact wire has chosen to address both safety, simplicity and aeathetic issues. The resulting injury depends on the type of crane involved. Engineers need support for the design task, not only for the simple drawing but also with \intelligent relations between the single \objects of the ocs. Alan baxter network rail guide to overhead electrification 2787albguneoh000001 february 2015 rev 10 3 of 52 2. Generally the alloys and hardware used depend on whether the connector is for a. They are used in overhead contactline systems in mass transit and mainline railways. External companies should not use these standards to construct nonergon energy assets. For the cantilevers of the overhead contact line systems we use grp, aluminium or steel. For almost 100 years, the overhead door brand has stood for product quality and expertise, as well as professional service.
Download the pdf overhead line electrification for railways. The overhead contact line department undertakes rail electrification projects. The national institute for occupational safety and health niosh. Nevertheless, it is still only about half the cost of a single contact wire system with. In addition maintaining this kind of geographically distributed systems is costly and dif. This checklist is designed to help identify the hazards associated when operating cranes or mobile plant near overhead power lines that may encroach on the approach distances specified in table 1 of this code. Site specific advice on appropriate exclusion zones and safe stand off distances to apply these will vary according to the voltage of the overhead line and its construction. The lightweight section insulators in the sicat 8wl5545 product line serve to separate overhead contactline systems into individual switch and feeder sections accessible by pantographs and therefore electrically insulate these sections from each another. This 3d wireframe model forms the basis for the other elff modules and can be changed at any time, which means it has a dynamic structure. The elasticity calculation through mathematical formulas is very hard because of the. Overhead contact system ocs overhead equipment ohe overhead line equipment ole or ohle overhead lines ohl overhead wiring ohw in this article, the generic term overhead line is used, as used by the. Ssp03 swivel with clevis for cantilever bracket 1 alsi7mg0,6 t6 uneen 1706 2.
Fatigue analysis of catenary contact wires for high speed trains. It can be divided into pantograph and overhead contact line systems, pantograph and overhead contact rail systems, and collector shoe and contact rail systems. All mounting and line hardware with insulation both temporary and permanent. This arrangement is termed aluminium conductor steel reinforced or acsr. Contact line equipment for mass transit and mainline railways. First electric tram using an overhead contact line in berlin. The design of the overhead contact line in a railway system should be done in order to achieve the. The book examines application techniques for system design, construction and maintenance, and includes. For the two transition tension lengths between overhead contact line. We recommend the modular sicat contact line systems. Generally a steel core is used with the aluminium to give the conductor mechanical strength. The determination of the impedance for overhead lines is a critical step before the. Carries the electricity which is supplied to the train by its pantograph.
It is an electrical line situated over the tracks fed by an electrical substation. Feb 08, 2011 dynamic behavior of differnet catenary systems of deutsche bahn. Overhead line electrification for railways an approachable. It may take the form of a short insertion in the contact wire or that of an extended overlap. The line differential relays at each end of the transmission line compare data on the line current via a fiber optic communications link, usually through opgw optical power ground wire cable, used for lighting design protection of the overhead line, wich has in the interior fiber optic cables. Ohw, ole, overhead contact system, overhead line electrification for railways, overhead line equipment, overhead wiring system post navigation. Overhead door corporation is the only manufacturer of a full line of commercial and industrial doors and operators specifically designed for integral applications.
The overhead contact line system s25 bases on the german overhead contact line system re250. California highspeed train project ocs structural requirements, r0 1. This department is able to offer reliable solutions to the most ambitious challenges in terms of quality and adverse conditions for implementation. Specification for overhead line fittingspart 1 fittings for 10300mm2 conductors. Burndy overhead h3 mechanical bolted tap connectors burndys line of mechanical tap connectors is the most complete, dependable and economical available. We consider our unique experience of contact wire breaks, feeding systems and the current collecting system to be effective for highspeed trains.
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