Title :
Thermal model based digital relaying algorithm for induction motor protection
Author :
Abou-El-Ela, M.S. ; Megahed, A.I. ; Malik, O.P.
Author_Institution :
Dept. of Electr. Eng., Alexandria Univ., Egypt
Abstract :
Thermal models can be used to protect induction motors from excessive overheating resulting from overloading, failure to start, unbalance and frequent starting. Such a model is adopted for use in a relaying algorithm. The developed algorithm accurately calculates the change in motor temperature and hence, protects the motor from excessive overheating. The lab results, included in this paper, of motor temperature during a loading cycle show high correspondence with the established thermal model
Keywords :
induction motor protection; machine theory; relay protection; starting; thermal analysis; digital relaying algorithm; frequent starting; induction motor protection; loading cycle; motor temperature; overheating protection; overloading; starting failure; thermal models; unbalance; Digital relays; Heat transfer; Induction motors; National electric code; Protection; Protective relaying; Resistance heating; Space heating; Temperature; Thermal loading;
Conference_Titel :
Electrical and Computer Engineering, 1996. Canadian Conference on
Conference_Location :
Calgary, Alta.
Print_ISBN :
0-7803-3143-5
DOI :
10.1109/CCECE.1996.548327
