The basic things about substations you MUST know in the middle of

Substation EquipmentTransformersCircuit BreakersDisconnecting SwitchesSubstation BusSurge ArrestersInsulators and ConductorsProtective RelaysFusesSubstation LocationAll power transmission lines must be isolated to avoid safety hazards. Large strings of insulators are used at substations and at other points along the power distribution system to isolate the current carrying conductors from their steel supports or any other ground mounted equipment. Insulators may be made of porcelain, rubber or a thermoplasticSee more on electrical-engineering-portal CED Engineering[PDF]

Fundamentals of Modern Electrical Substations - Part 1

To better understand the importance of electrical substations, let''s start with a discussion about the structure of the power systems and their main components. Power System Structure . The typical