A Photo of a Shunt Reactor

Below is a photo of 1037.4 Ohms per phase, AEG ETI shunt reactor that is connected in a high voltage 230 kV transmission line. Its rated power is 50,000 kVar.

The outside look and construction of a shut reactor is very much similar to a power transformer, except that it is slimmer. And since it is, basically an inductor, which produces inductive reactance, it is consist of coil winding (like a power transformer)

Shut reactor is usually used in the transmission system to absorb or dissipate the excess Reactive Power (MVar) in the line which is generated by charging current along the long and high voltage transmission lines.
A High Voltage AC submarine cable transmission line, for example, accumulates large amount of reactive power through the charging current due to cable’s close proximity to the “ground”. Shunt reactor is usually installed at both ends of an HVAC submarine cable to absorb or dissipate the excessive Mavr.

Posted in Transformers and Accessories, Transmission System

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Cross Section of a Submarine/Underground HVAC Transmission Line Cable »