Rail electrification upgrade across 596 track km to support Vande Bharat, 160 kmph trains on Delhi-Mumbai route

A 128 TKM railway section between Salabad and Murhesi Rampur has received a modern 2×25 kV traction power supply system. The upgrade strengthens the electrical system that powers trains across this part of Kota Division. It is intended to meet the needs of faster passenger trains and heavier freight services.

The newly energised section includes two Sectioning Posts, at Salabad and Murhesi Rampur. It also includes two Sub-Sectioning Posts, at Pingora and Jajanpatti. These facilities divide and manage the powered railway network, helping operators control supply across the route.

This work takes the total length covered by the advanced traction system in Kota Division to 596 TKM. The upgrade supports higher electrical demand, improved voltage stability and greater reliability. It also prepares the division for more frequent train movements, future high-speed services and heavier freight operations.

A 2×25 kV traction system is a railway power arrangement using a 25 kV overhead line and a separate 25 kV feeder. Together, they create a 50 kV transmission path between substations, while the train takes power at about 25 kV between the overhead line and the rail. This lets electricity travel farther with less loss.

In a conventional 25 kV system, power is transmitted mainly through the overhead line and rail return at 25 kV. The 2×25 kV design uses autotransformers along the route to share and balance the supply. This lowers current in the main transmission path and helps limit voltage drops.

The article links the system to higher power capacity, stronger voltage stability and improved reliability. That matters on busy routes, where faster trains, automatic signalling and heavier traffic increase electrical demand. The article does not detail the electrical arrangement; these technical differences are established railway practice.

The advanced 2×25 kV traction system now covers 596 TKM in Kota Division. This is the combined length of three upgraded railway sections. The expansion gives the division a larger, stronger electrical network for rising passenger and freight traffic.

The biggest section is 368 TKM between Nagda and Rawtha Road. A further 100 TKM lies between Malarna and Piloda. The newest addition covers 128 TKM between Salabad and Murhesi Rampur. Together, these three figures total 596 TKM.

The division has also energised a 2×25 kV Traction Substation at Bharatpur, its fourth such substation. The infrastructure includes 12 Sub-Sectioning Posts, seven Sectioning Posts and four Traction Substations. The enlarged system is intended to support faster trains, shorter intervals between services and heavier freight operations.

Faster trains and denser traffic need more electricity from the traction network. A stronger 2×25 kV supply helps provide that power over long railway sections. It also improves voltage stability and reliability, so trains are less affected by weakened supply as demand rises.

The system is especially useful with automatic signalling, which allows trains to run at shorter intervals. More trains moving closer together create greater electrical demand. By reducing voltage drops and increasing available power, the upgraded network can better support high-speed passenger services and heavier freight trains.

The article connects the work with Mission Raftaar and proposed speeds of up to 160 kmph on the Delhi-Mumbai corridor. It also says the infrastructure may support future Vande Bharat services. However, higher speed requires suitable tracks, signalling and operational clearances too. Electrification is important, but it is only one part of the upgrade.

A Traction Substation, or TSS, receives electricity and supplies the railway’s traction system. It feeds power into the overhead equipment used by electric trains. In the article, Bharatpur’s TSS is operating at full load, and it is the division’s fourth such substation.

Sectioning Posts, or SPs, divide the overhead electrical network into manageable sections. They can help isolate a section during a fault or maintenance while keeping other sections supplied. Sub-Sectioning Posts, or SSPs, create smaller divisions within those sections. This gives operators more precise control over the route.

The article reports 12 SSPs, seven SPs and four TSSs across the upgraded infrastructure. The new Salabad–Murhesi Rampur section includes SPs at Salabad and Murhesi Rampur, plus SSPs at Pingora and Jajanpatti. These technical roles are standard railway practice; the article mainly provides their locations and totals.

Electric power is only one requirement for very high-speed railway operation. A train travelling at 160 kmph also needs track that can safely handle higher forces and sustained speed. The route must be prepared for the operating conditions created by faster services.

Signalling is equally important. It must detect trains, maintain safe separation and manage movements at higher speeds. The article also highlights automatic signalling, which allows more trains to move at shorter intervals. Operational clearances are needed as well, confirming that the infrastructure and procedures are ready for the proposed service.

The upgraded traction system supports Mission Raftaar, which envisages speeds up to 160 kmph on the Delhi-Mumbai corridor. It can provide the electrical capacity needed by faster trains, but it cannot replace track, signalling or operating approvals. The article therefore presents electrification as one part of a broader effort to improve speed and capacity.

An electric railway draws electricity from the wider grid at a traction substation. The substation changes and feeds that power into the overhead line. A train’s equipment collects the electricity through its pantograph, uses it for traction motors and onboard systems, and returns current through the wheels and rails to the electrical system.

As electricity travels along a long route, resistance in conductors causes some energy to be lost. The voltage available farther from the supply point can therefore fall, especially when several trains draw power at once. A larger voltage drop can limit train performance and make the supply less stable.

The article says the 2×25 kV system supplies higher power over long sections while reducing voltage drops. In standard railway practice, additional feeder conductors and autotransformers share the transmission load, allowing power to travel more efficiently. That helps support faster trains, frequent movements and heavier freight demand.