VERFAHREN ZUM BETRIEB EINES GASTURBINENKRAFTWERKS

VERFAHREN ZUM BETRIEB EINES GASTURBINENKRAFTWERKS

In a method of operating a gas turbine during shut down the gas turbine is decelerated and closure of compressor inlet guide vanes (1) is initiated at a shaft speed at least 5% above the shaft speed where a vibration peak occurs. The compressor inlet guide vanes (1) are closed by an angle in the ran...

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Bibliographische Detailangaben
Hauptverfasser: ERB, BERNHARD, TREIBER, MARTIN HEINRICH, BERESINI, LUCA, MARX, PETER, MATZ, CHARLES, DAS BURMA, BIKASH
Format: Patent
Sprache:ger
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Zusammenfassung:In a method of operating a gas turbine during shut down the gas turbine is decelerated and closure of compressor inlet guide vanes (1) is initiated at a shaft speed at least 5% above the shaft speed where a vibration peak occurs. The compressor inlet guide vanes (1) are closed by an angle in the range from 15°-35°, preferably at a rate between 5° and 10° per second. The method effects a reduction of the risk of rotational stall.