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               266 Harmonic studies of power compensating plant






























































                      Fig. 7.1 (a) One-line diagram of small system; and (b) per-phase equivalent circuit.

                      where Z fc is the impedance of the capacitor and Z fl is the impedance of a tuning
                      reactor. The subscript f alludes to the filtering action of the capacitor branch.
                        The harmonic current I n divides between the capacitor and the supply in pro-
                      portion to the admittance of these parallel branches. If Z s is the equivalent
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