Fig. 7
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Pilot gas fuel valve training output.
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The main valve training dataset is shown in Fig. \ref{ttps://www.authorea.com/users/227193/articles/433220-untitled-document?mode=edit#author-label-fig:8} with the output in (a) and input in (b). The trend is also identical between the input and the output. The shutdown lies in 0% opening and start-up to 40-45% opening. However, it does not change from any position to a specific position even though the turbine is in DLE mode as compared with the pilot gas fuel valve. Thus, the main function of the pilot gas fuel valve in sustaining low emission is proven from the actual behaviour of DLE gas turbine operation.