Static synchronous compensator (STATCOM)

Rapid developments of solid state power electronic devices in the last three decades have led to the development and widespread application of static var compensators (SVCs). These shunt connected reactive compensation equipment provided an important means for enhancing electric power transmission system performance. Continued rapid developments in power electronic devices and control techniques let to utilisation of gate turn-off thyristor (GTO) devices to form new power electronic shunt compensation equipment which offered more robust output.