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《Power System Technology》 2010-12
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Analysis on Mathematical Model of Reheat Condensing Turbine for Power Unit and Simulation of Its Dynamic Response

HAN Zhongxu,ZHOU Xiaoxin,LI Fang,TIAN Xinshou(China Electric Power Research Institute,Haidian District,Beijing 100192,China)  
There are some problems difficult to explain when boiler and steam turbine of generation unit are modeled respectively and isolatedly.Considering operation mechanism of thermal generation unit and regarding boiler,turbo-generator set and the coordinated control system as a whole,an improved mathematical model for stability analysis of power system is proposed.The proposed model is not only suitable to transient simulation,but also can be utilized in medium-and long-term dynamic simulation of power system.By means of user-defined modeling,simulation results of power system analysis software package(PSASP) show that closed-loop control system influences output of mechanical power and dynamic overshooting process of the steam flowing through the turbine a certain extent;the regenerative system influences the amplitude of the dynamic overshooting meanwhile they has a delayed effect on the dynamic process.
【CateGory Index】: TM621
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