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Substation Equipment: Synchronous Condensers
Synchronous Condensers
A synchronous condenser is a synchronous machine running without mechanical load and supplying or absorbing reactive power to or from a power system. Also called a synchronous capacitor, synchronous compensator or rotating machinery.

In November 1995, the first static synchronous compensator began operating at a TVA substation in Knoxville, Tennessee. This compensator can regulate voltage without expensive external capacitors or reactors.
Figure 1. Synchronous condenser
Figure 1. Synchronous condenser

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