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This paper deals with the investigation of the loss of generation disturbances by the transient energy function (TEF) method. It describes the modeling of the loss of generation disturbance and the post-disturbance conditions. A technique for simulating the out-of-step impedance relay operation following loss of generation is developed and the transient energy margin obtained from the TEF method is related to the out-of-step impedance relay setting. The procedure is applied to two cases of loss of generation in the Florida Power & Light Company network.
Date of Publication: Aug. 1986