What are three types of electrification?
The track electrification refers to the type of source supply system that is used while powering the electric locomotive systems….The three main types of electric traction systems that exist are as follows:
- Direct Current (DC) electrification system.
- Alternating Current (AC) electrification system.
- Composite system.
What is 2X25kV system?
D I G I T A L I N D I A. ❖ The 2X25kV system is based on the idea of distributing. the voltage along the line at higher voltage (50kV) and feeding the train at 25kV. For this the substations feed the system at 50kV and through intermediate auto-transformer (AT) centers supply power to the Rolling stock at 25kV.
What is Kando system?
Kando System (Single-phase AC to Three-phase AC): In this system, the single-phase 16-kV, 50 Hz supply from the sub-station is picked up by the locomotive through the single overhead contact wire. This 3-phase supply is then fed to the 3-phase induction motors. Kando system is likely to be developed further.
What is electrification explain?
Electrification is the process of powering by electricity and, in many contexts, the introduction of such power by changing over from an earlier power source. The broad meaning of the term, such as in the history of technology, economic history, and economic development, usually applies to a region or national economy.
What is electrification mention types?
Electrification systems are classified by three main parameters: Voltage. Current. Direct current (DC)
What is a traction transformer?
Traction transformers are critical components in the traction chain, affecting both train performance and operator services. They can be mounted either in the machine room of the train, on the roof or under the floor, providing maximum flexibility and reliability in single and multiphase systems.
What is OHE mast?
An overhead line and structure supported on OHE mast. A traction overhead mast is a simple vertical post embedded in the foundation or rigidly fixed in vertical position to support the overhead equipment with cantilever assembly. There are many challenges associated with these tall and slender structures.
What is railway electrification in India?
Indian Railways has electrified 45,881 Route kilometers (RKM) that is about 71% of the total Broad-Gauge network of Indian Railways (64,689 RKM, including Konkan Railway) by March 31, 2021 It is planned to electrify all routes of Indian Railways by 2024. …
What kind of power does a 25 kV railway use?
The 2 × 25 kV autotransformer system is a split-phase electric power system which supplies 25 kV power to the trains, but transmits power at 50 kV to reduce energy losses.
How does 2×25 kV traction system improve load factor?
Improved Load factor as number of trains fed per feeding post are more Seamless running of locomotive from 1×25 kV to 2×25 kV traction system Feed extension from one system to another possible Additional feeder wire Provision of Auto-transformer at each SP and SSP
What is the maximum contact voltage for 2×25 kV?
The system of 2×25 kV is based on distributing power at 50 kV and feeding to the vehicle at 25 kV. For this the Traction sub-station is provided with a center tap secondary winding at 50 kV (55 kV for the maximum limit of contact wire voltage of 27.5 kV).
Why is 25 kV the best voltage for electricity?
It was found that 25 kV was an optimal point, where a higher voltage would still improve efficiency but not by a significant amount in relation to the higher costs incurred by the need for larger insulators and greater clearance from structures. To avoid short circuits, the high voltage must be protected from moisture.