High Voltage Substations Overview

High voltage substations are interconnection points within the power transmission and distribution systems between regions and countries.

Different applications of substations lead to high voltage substations with and without power transformers:

1. Step up from a generator voltage level to a high voltage system (MV/HV)
- Power plants (in load centers)
- Renewable power plants (e.g., windfarms)
2. Transform voltage levels within the high voltage system (HV/HV)
3. Step down to medium voltage level of a distribution system (HV/MV)
4. Interconnection in the same voltage level

Arrangement and modules

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