| By modular modeling method, mathematical models calculating transient characteristics of main equipment in the boiler system and steam turbine system for the generating Jinzhou power plant unit No.6 are built, then the modules are connected, and transient processes caused by representative disturbance in power plant are analyzed. The primary research contents of the thesis and its contributions are as follows: 1. For single-phase working substance heat exchange equipment, single- phase medium lumped parameter mathematical model is established to simulate the transient processes in the sectionalized heat exchanger of the boiler, the steam-steam heat exchanger and the single-phase volumetric links of the steam turbine. 2. The single-phase medium lumped parameter mathematical model is utilized for simulating the furnace and air heater (sectionalized). The k transient processes of the boiler fife-side are simulated 3. For double-phase medium equipment, such as evaporation system of the boiler and deaerator, condenser, closed heater of the steam turbine cycle, their mathematical models are built up separately to simulate their transient processes. 4. For the boiler system, module of each equipment including fife-side and steam-side are linked to simulate the transient processes caused by representative disturbance .The simulation results are analyzed in detail. 5. For the steam turbine system, transient processes in the deaerator closed heater and condenser are simulated ,and the results are studied. |
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