RESEARCH ON DYNAMIC PERFORMANCE AND CONTROL CHARACTERISTICS OF GAS TURBINE COUPLED WITH SOLAR ENERGY

Yang Libo; Duan Liqiang; Chen Biao

doi:10.19912/j.0254-0096.tynxb.2021-0739

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Acta Energiae Solaris Sinica ›› 2022, Vol. 43 ›› Issue (12) : 134-143. DOI: 10.19912/j.0254-0096.tynxb.2021-0739

RESEARCH ON DYNAMIC PERFORMANCE AND CONTROL CHARACTERISTICS OF GAS TURBINE COUPLED WITH SOLAR ENERGY

Yang Libo, Duan Liqiang, Chen Biao

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Abstract

In order to further study the influence of coupled solar energy on the dynamic characteristics of gas turbines, a dynamic model of the gas turbine coupled with solar energy and the corresponding control system was established. The influence of different coupling modes of trough collectors on the steady-state performance of the system and the dynamic response of various parameters when subjected to external load and DNI disturbance are analyzed. The influence of the metal heat capacity of the trough collector on the dynamic characteristics of the system is studied. At the same time, aiming at the proportion-integration（PI） control, the influence of the corresponding parameters on the system regulation effect is studied. The results show that when the collector is arranged in front of the regenerator, the exhaust temperature of the system is relatively high, but the efficiency of the system is relatively low. When disturbed by external load, the system responds more quickly. When the collector is arranged behind the regenerator, the fuel consumption is lower. The system response speed of the two methods is the same when it is disturbed by DNI. When the heat capacity of the collector metal is small, the response time of the system is mainly affected by the inertia of the control system and the regenerator. As the heat capacity increases, adjusting the inertia parameters of the collector is the most effective way to change the dynamic response time of the system, Both the proportional coefficient K_p and the integral coefficient K_i should be selected reasonably, too large or too small value will increase the risk of system imbalance.

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solar collectors / gas turbines / dynamic models / control systems

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Yang Libo, Duan Liqiang, Chen Biao. RESEARCH ON DYNAMIC PERFORMANCE AND CONTROL CHARACTERISTICS OF GAS TURBINE COUPLED WITH SOLAR ENERGY[J]. Acta Energiae Solaris Sinica. 2022, 43(12): 134-143 https://doi.org/10.19912/j.0254-0096.tynxb.2021-0739

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