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What kind of power does a unified series-series FACTS controller transfer via the dc power link?

What kind of power does a unified series-series FACTS controller transfer via the dc power link? Correct Answer Active

Being connected to a multiline transmission system, a unified series-series FACTS controller transfers active power among the lines via the dc power link. It provides independent series reactive compensation for each connected transmission line as it is controlled in a co-ordinated manner. Here the dc terminals of the individual units connected to each line of the multiline transmission system are all connected together for real power transfer.

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