Abstract
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.
Highlights
Micro gas turbines with 25 kW to 300 kW output power have the advantages of good stability, strong fuel adaptability, and low pollution [1]
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
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%
Summary
Micro gas turbines with 25 kW to 300 kW output power have the advantages of good stability, strong fuel adaptability, and low pollution [1]. Aiguo Liu et al [2] proposed adjustments and improvements for low-calorific value’s biomass gas. Ebrahim Najimi et al [7] studied a method applied to micro gas and the result showed that this control reduced the maximum amplitude of the speed deviation. Jiandong Duan et al [9] proposed two coordinated control methods for hybrid power generation systems and predicted the output power of a micro-gas turbine. The biomass gas micro turbine overall model is built and the control system under the disturbances of environmental temperature and unit load are studied. The responses processes of main parameters have been obtained It will provide reference data for the response research of biogas-fired micro gas turbine under different disturbances
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