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The steam turbine group is one of the most important equipment in the thermal power plant . Steam turbine unit control system safe and stable operation is essential protection of steam turbine , its performance will directly affect the economy , security and quality of power supply of Steam Turbine and grid operation . 200MW, 300MW, 600MW condensing steam turbine group study established mechanism analysis of different turbine control system components (including electro-hydraulic converter , oil motive steam inlet volume , steam power , rotor ) mathematical models and virtual instrument software tools LabVIEW simulation study on the dynamic characteristics . On the basis of in -depth study of the three turbine control system principles, characteristics and operation mode , graphical modeling , simulation and control tools in LabVIEW software package on the turbine control system graphical configuration modeling , study the steam turbine since the launch control system and load control system gives the best tuning parameter values ??, three turbine control system speed and control of the power curve . And fuzzy self - tuning PID control method improved load control , optimum tuning values ??of controller parameters under the new program , the comparative analysis of the control performance of the system under the control of the two control schemes , the simulation results and analysis show that in system stability , overshoot , and self- tuning PID parameters , fuzzy self- tuning PID control algorithm is superior to the traditional PID control algorithm . In this paper, the powerful LabVIEW virtual instrument design open, flexible , and can be synchronized with the computer development , virtual device with the network and other peripheral devices interconnected turbine control system , has a good interface and ease of operation , can replace traditional steam turbine control system simulation devices. This research for improving the quality control of the steam turbine , the better to carry out the study of the turbine control has some theoretical and practical significance .
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