General Electric Technology Gmbh

Ansaldo Energia Switzerland Ag

Alstom Technology Limited

Ansaldo Energia IP UK Limited

Theodoros Ferreira-Providakis

Thiemo Meeuwissen

Ghislain Singla

Sebastian Lipari

Ralf Jakoby

Ourania-Nektaria Margari

Nektaria-Ourania Margari

Dirk Therkorn

Jakob Wieck

The invention relates to a method for controlling a gas turbine group including, a first combustion chamber, a first turbine connected, a second combustion chamber, a second turbine, and a load. The method includes: measuring a temperature TAT1 at an outlet of the first turbine; determining a ratio S1R of a fuel mass flow feeding a pilot flame of the first combustion chamber to a total fuel mass flow feeding the first combustion chamber based upon the measured temperature TAT1 in accordance with a predetermined mapping table between ratio S1R and temperature TAT1; adopting the larger one between the determined ratio S1R and a predetermined booster ratio S1R to be used in the controlling fuel flow feeding the first combustion chamber of the gas turbine group. Pulsation behavior of the gas turbine group may be improved. High pulsation during fast de-loading of the gas turbine group is substantially is decreased, avoiding potential damage to the parts of the gas turbine group.

Method for controlling a gas turbine group

In a method for the low-CO emissions part load operation of a gas turbine with sequential combustion, the opening of the row of variable compressor inlet guide vanes is controlled depending on the temperatures of the operative burners of the second combustor and simultaneously the number of operative burners is kept at a minimum. This leads to low CO emissions at partial load of the gas turbine.

Gas turbine with improved part load emissions behavior

Growing community of inventors

Wettingen, Switzerland

Theodoros Ferreira-Providakis