Title :
A study of armature winding internal faults and protection schemes for turbogenerators
Author :
Xiangheng, Wang ; Songlin, Chen ; Weijian, Wang ; Yuguang, Sun ; Xu, Longya
Author_Institution :
Dept. of Electr. Eng., Tsinghua Univ., Beijing, China
Abstract :
The internal fault of an armature winding is one of the most severe faults for turbogenerators. It is necessary to know the transient values of the machine when the internal faults occur so as to design suitable protection. Based on the multi-loop method, a mathematical model of the turbogenerator with an internal fault is developed. The air-gap permeance analysis method is used to calculate the parameters and the eddy current of the solid rotor. The method is verified by computer simulation and experimental results. The developed model provides a theoretic basis for predicting transients and developing protection schemes for turbogenerators with internal armature faults
Keywords :
air gaps; eddy currents; electrical faults; fault diagnosis; machine protection; machine theory; rotors; turbogenerators; air-gap permeance analysis method; armature winding internal faults; computer simulation; eddy current parameters; internal armature faults; internal fault; internal faults; multi-loop method; protection schemes; solid rotor; transient values; transients prediction; turbogenerators; Circuit faults; Eddy currents; Electric machines; Iron; Magnetic cores; Mathematical model; Power generation; Protection; Solids; Turbogenerators;
Conference_Titel :
Industry Applications Conference, 2000. Conference Record of the 2000 IEEE
Conference_Location :
Rome
Print_ISBN :
0-7803-6401-5
DOI :
10.1109/IAS.2000.881142
