In order to know about the
influences of disturbance on the operating performance, the present work
developed the overall dynamic simulation model of the micro gas turbine and
investigated the control system under the disturbances of environmental
temperature and unit load. The response processes of main parameters have been
obtained. It found that the compressor pressure ratio and the fuel flow rate
increase in the case of natural gas being replaced by pine gas. When the system
reaches a new steady state, the main parameters change to different values. The
output power decreases with the declining of the air mass flow when the ambient
temperature rises, the biomass gas mass flow rate increases under the
regulation of the control system to maintain the output power and rotating
speed in which the thermal efficiency reduces by 1.40%. The thermal efficiency
enhances with the increase of output load. The control system can quickly and
effectively act to maintain the key parameters at desired value.
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