| Supercritical thermal power in the now is the most important power generation technologies,and Supercritical simulation of the unit technology can ensure safe and economic operation. The Steam-Water system plays a very important role in the simulation of supercritical units,as the steam-water system is also key in the thermal power system. For the current problems in the need for simulation of supercritical units and ultra-supercritical units simulation, In this thesis, the main content is simulate and develop the Steam-Water system simulation model of supercritical units,and simulat static and dynamic characteristic simulation of Gujiao Power Plant600MW supercritical unit to prove the correctness of the model.The main content is as follows:(1) According to the ideology of the modular modeling divited the entire water system of the device and prepare its algorithm.(2) In order to guarantee this thesis conduct normally and reasonable,I’ll establish simplified mathematical model of the combustion system,and then use the method of modular configuration of the graphics, build the simulation model of the steam-water system.(3) Using InTouch to draw the screen of super-critical unit Steam-Water system,connect the screen and the simulation platform to build a complete visual simulation of the operating system.(4) Reaserch the dynamic simulation of Gujiao Power Plant600MW supercritical unit, and contrast30%MCR,75%MCR and100%MCR of rated operating conditions of static simulation results and Design parameters to make sure whether it can meet the accuracy of online and in real or not.(5) Reaserch the dynamic simulation of the start profress and test the amount of disturbance at90%rated conditions to verify whether the model dynamic characteristics can match the actual dynamic characteristics. This thesis established a relatively accurate model of Steam-Water systerm and laid the foundation for the establishment of supercritical units simulator. |
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