Step-up Substation
Substations (up to 132kV):
Substations play a crucial role in the transmission and distribution of electrical power. Substations up to 132kV are designed to step down high voltage power from transmission lines to a lower voltage suitable for distribution to consumers.
- Voltage Rating: Up to 132kV
- Purpose: Step-down voltage, power distribution, and switching functions
- Components: Transformers, switchgear, circuit breakers, protection systems, and control equipment
- Applications: Industrial, residential, and commercial areas
- Safety Features: Grounding, earthing, and protective relays
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Features and Details
- Voltage Rating: Up to 132kV
- Transformer Capacity: Varies, typically from 5MVA to 100MVA
- Current Rating: Depending on the transformer and circuit breakers
- Insulation Type: Gas-insulated (GIS) or air-insulated (AIS)
- Protection Systems: Relay protection, overcurrent protection, differential protection
- Short Circuit Rating: Typically 25-40kA
- Frequency: 50Hz or 60Hz
- Switchgear: SF6 or vacuum circuit breakers
- Control Voltage: 110V DC or 220V DC
- Earthing Resistance: Less than 1 ohm
