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This paper discusses two methods for controlling line-charging kilovars (kvar) and voltages on a lightly loaded 345-kv system. One method utilizes shunt reactors, while the other takes advantage of underexcited capabilities of modern turbine generators utilizing appropriate control. The conclusion, supported by experience, favors the underexcited operation in this situation.
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Kekela et al. (1964) studied this question.
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