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The shunt controller FACT (Flexible AC Transmission) device is:

  • A.like a current source
  • B.like a voltage source
  • C.like a power source
  • D.like a phase angle source

Answer: A

A shunt controller of the FACTS family (such as a STATCOM or a static VAR compensator) is connected in parallel with the line and injects current into it at the point of connection, so it acts like a controllable current source. A series controller, in contrast, injects a voltage in series with the line and so acts like a voltage source. The power source and phase angle source options do not describe the way the shunt device acts on the network. The answer is option A.

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