Method of coordinated operation for turbine-generator shafts torsional vibration protection
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United States of America Patent
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Apr 3, 2012
Grant Date -
Nov 11, 2010
app pub date -
Apr 30, 2008
filing date -
Jan 17, 2008
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Abstract
The present invention relates to the coordinated control method of torsional stress relay in large thermal power plants' generators (300 MW and above), which will be adopted when shaft torsional oscillations occur. This invention also publishes a method of realizing selective trip the generators and the trip criterions which are implemented by the torsional stress relay and coordinated control master station (Tmaster). Tmaster will real-time monitor the operating status of the generators and TSR, TMaster will also real-time generate a trip priority level sequencing by analyzing the unit output.
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