Gas turbine control Torsten Strand
Gas turbine control Torsten Strand
Gas turbine control Torsten Strand
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Performance supervision<br />
• During operation the performance deteriorates mainly due to fouling of the<br />
compressor. Dust from the air attaches to the blade surfaces and increases<br />
the flow losses.<br />
• Deterioration also comes from the wear of seals increasing leakages.<br />
©Siemens Power Generation 2003. All Rights Reserved<br />
• The <strong>control</strong> system checks the loss in performance and indicates when it is<br />
time to do a compressor wash<br />
• on line or off line<br />
• Most of the performance is regained at a off line wash, while the on line wash<br />
has less good effect but is used when it is not possible to stop<br />
• The deterioration due to wear is only reduced at overhauls, when blades and<br />
seals are exchanged<br />
25/04/2006<br />
Power Generation 50
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