What is a secondary substation?

The so-called secondary substation (station), referred to as the secondary substation, is relative to the primary substation (station).

Each power grid has a main grid voltage (usually the highest voltage level), and the electricity used by end users reaches the electrical equipment after multiple levels of voltage reduction from the main grid. The substation (station) responsible for the first step-down task from the main network is the primary transformer. The secondary local power grid is formed by many outgoing lines from the primary transformer. The secondary transformer is responsible for the secondary transformer. The power grid continues the task of reducing the voltage of the substation (station).