DC supply for Ahmedabad Metro
In this blog, we will discuss, electrical supply system for Ahmadabad metro train. Ahmedabad metro phase 2 receives electrical power at 132 kV from grid substation of the power supply to receiving substations. The 132 kV power supply at receiving end substation is stepped down to 32 kV using oil cooled power transformer. The 33 kV cable passes through tunnels to auxiliary or traction substation, which are 750 V DC traction supply and 415 V AC for auxiliary services.
The
750 V DC system uses a third rail system to power the train. The third rail is
in 15 m length, joined together by special splice joints. The DG sets and UPS
battery are arranged at each stations.
180 kVA DC Sets
2 * 20 kVA UPS Battery System
Layout of Ahmedabad Metro Substation
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