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What are the parameters of the AC transmission system that a FACTS controller can control?

What are the parameters of the AC transmission system that a FACTS controller can control? Correct Answer Impedance, Voltage, Current, Power and Phase angle

FACTS controllers provide control of one or more AC transmission parameters like Impedance, Voltage, Current, Power and Phase angle. FACTS controllers can be classified into four types. They are Series connected controllers, Shunt connected controllers, Combined series-series controllers and Combined shunt-series controllers.

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