Transmission Equipment

Substation

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Definition

A network node where transmission lines interconnect, voltage levels are transformed by power transformers, and switching equipment enables operators to isolate sections for fault clearing, maintenance, or reconfiguration. A typical high-voltage substation includes power transformers, circuit breakers, disconnect switches, instrument transformers (CTs and PTs), surge arresters, protective relaying, metering, and SCADA communications equipment. Substations are classified by voltage level (EHV, HV, distribution) and by function (transmission, switching only, distribution), and represent the major investment anchors of the transmission grid.

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Topic Deck

Transmission Equipment

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Source

FERC Pro Forma OATT / LGIP

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