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An adaptive microprocessor based turbine overspeed protection scheme
Published in Publ by IEEE, Piscataway, NJ, United States
Pages: 661 - 663
A microprocessor-based protective relay is developed for the overspeed protection of a medium-capacity turbine in a turbo-alternator set. A pair of phototransistors with an amplifier circuit are only used in the hardware circuitry for sensing the fault, while an 8-b microprocessor is used for determining whether a fault condition exists and actuating a tripping relay. An alarm actuator and electromechanical tripping relay are incorporated for providing a fault indication at and above a specified speed (120% of the rated speed) and as a terminal tripping device at and above a further higher speed (140% of the rated speed), respectively, to shut down the turbine.
About the journal
JournalData powered by TypesetSICE '90. Proceedings of the 29th SICE Annual Conference--Volume II
PublisherData powered by TypesetPubl by IEEE, Piscataway, NJ, United States