Development On The Experimental System For Wind Simulation Of Wind Power Generation

Along with the wind power generation enterprise continuous development and expansion, the research on the wind power generation technology is regarded as key point. In this thesis, the experiment is used to simulate wind resource, large-scale wind turbine, mechanical transmission part, electric power generator system. The difficulty of collection data for megawatt-class wind turbine and limitation of experiment research are solved, purposes of researching and teaching are achieved.First of all, for the problem of wind resource requirement of the simulation in large-scale wind turbine running process, free wind, measured wind and turbulence wind modeling are studied by using artificial discrete wind data manipulation, wind data collection fitting and Von Karman modeling, in addition, above three wind models are visually simulated by computer graphic. Secondly, the knowledge of fluid mechanics is used to analysis the utilization of aerodynamic characteristics for free flow wind turbine and absorption for wind turbine, the mathematical model in actual running time for wind turbine output power and torque are established, and the program is written. Finally, torque and rotate speed of inductor motor are controlled by the use of vector control theory and variable-frequency speed regulating, the output features for already exist wind resource turbine is simulated, substitutes wind turbine doubly-fed generator for power supply, and the process of generating electric for the large-scale wind generator is accomplished.VC++ 6.0 is used as development environment for software in the experiment system, the data transmission between upper machine and lower machine is implemented by using converter, data communication card. Lower machine is established by using induction motor, doubly-fed generator. Upper machine interface is used to select wind model, set up related parameters, and then is responded by lower machine .Finally the wind speed graph, wind direction graph, wind turbine speed graph, wind turbine torque graph, output power, feather and yaw graph are represented in form of curve on the interface. In addition, SUT1500 wind turbine generator of Shenyang University of Technology is used as research object, and the running process under free wind resource is analyzed. The practicality and effectiveness of the system are proved by the experiment results, the demand of research and teaching are satisfied.