Single Line Diagram Of Ac Traction System

Indian railway traction system uses 1 5 kv dc around bombay and 25kv ac is used in rest of the country.

Single line diagram of ac traction system. In fact the complete diagram is more likely to hide than to clarify the information we are seeking from the system viewpoint. Ess located in the x axis origin ideal profiles along the catenary for the two systems are compared under equal load conditions. Single line diagram of the a c. For ac systems the traction substation core equipment will be transformers which connect to the three phase power utility supply to convert this to a single phase voltage suitable for the rail electrification.

The supply for traction system is taken from state utility which is three phase source at 132 220 kv. An ac traction system has become very popular nowadays and it is more often used in most of the traction systems due to several advantages such as quick availability and generation of ac that can be easily stepped up or down easy controlling of ac motors less number of substations requirement and the presence of light overhead catenaries that transfer low currents at high voltages and so on. With siemens you can rely on highly available and reliable systems and low life cycle costs. Energo pro ge each part can again be sub divided into two.

The traction ohe required 25 kv supply so only two phases are taken and step down to single phase 25 kv through transformer which. Ac traction power supply in main line and regional rail service from consulting and planning to project implementation commissioning and worldwide service. This low frequency leads to give better performance and more efficient operation by the series motor. But even with these differences single line diagrams summarize both the power system to be protected and the controls that will operate the power system.

In addition the dc traction substation will contain circuit breakers to ensure the system is adequately protected and switching devices allowing operation and maintenance of the system. The next level of detail of power system relaying is found in the ac and dc schematics. In this type of traction system ac series motors are used to produce the propulsion of vehicle. The ac schematics detail the power system being protected and how it is being measured.

The complete 3 phase circuit is seldom necessary to convey even the most detailed information about the system. Each three conductor set of power wires is shown as a single line each transformer appears as a single primary winding and single secondary winding rather than three of each each motor and generator is a simple circle rather than a complete set of windings motor. Electrical system on photo 110kv substation. The x axis origin coincides with the location of the electrical.

Pantograph voltage behaviours of an ac autotransformer supplied traction system continuous line and a single phase one dashed line. Primary transmission and secondary transmission and similarly primary distribution and secondary distribution and then finally the system of supply to individual consumers. Single phase ac traction system.