Title :
Research on temperature-rise of stator iron-core end region of turbine generator
Author :
Junqing, Li ; Heming, Li ; Zhiping, Lu
Author_Institution :
Dept. of Electr. Eng., North China Electr. Power Univ., Baoding, China
Abstract :
The heating process of stator end-region of synchronous generator on all kinds of operating conditions is analyzed. With the phasor diagram of the electric-magnetic potential in cylindrical rotor synchronous generators, the mathematical model of temperature of stator end region in synchronous generator is deduced. The relationship between the temperature of stator end region and the active power, reactive power and armature voltage is developed. The parameters of the temperature model are identified with the method of least squares. A new temperature-rise limit curve of stator end region is deduced, which is given in the P-Q operating chart of synchronous generator. The preciseness of the temperature model is validated with the experimental values of turbine generator. The model is also used to real-time monitor of the generator stator end region temperature.
Keywords :
least squares approximations; magnetic flux; reactive power; stators; synchronous generators; thermal analysis; turbogenerators; active power; armature voltage; cylindrical rotor synchronous generators; electric-magnetic potential; heating process; least squares method; magnetic flux density; phasor diagram; reactive power; stator iron-core end region temperature rise; synchronous generator; turbine generator; Electric potential; Heating; Mathematical model; Reactive power; Rotors; Stators; Synchronous generators; Temperature; Turbines; Voltage;
Conference_Titel :
Power Electronics and Drive Systems, 2003. PEDS 2003. The Fifth International Conference on
Print_ISBN :
0-7803-7885-7
DOI :
10.1109/PEDS.2003.1282998
