| Based on the theory of the total energy system, that is made ,in this paper , in order to obtain upper efficiency,the optimized analysis is put up which according to the chief course of Jing feng gas-steam combined cycle unit. The research of the thesis is mainly based on the followings:1. The factor which effect the total efficiency mostly in combined cycle is analyzed .In order to achieve the prime overall configuration of combined cycle, the principle of overall configuration is studied, The total configuration of Jing feng gas unit is analyzed as an example.2. In terms of the selection of gas turbine, the optimization of steam system is very important for improving the overall efficiency of combined cycle, the relating performance analysis of combined cycle is analyzed in the thesis, and also the optimizing model of steam system is built.3. The triple pressure reheating steam system of Jing feng gas unit is optimized based on the model which has been built above, the effect on the efficiency of bottom cycle is analyzed when the parameters varied, then the optimum steam parameters is educed, the comparation between the optimized result and the practical running parameters is studied. |
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