Title :
Maximising rotor thermal capacity
Author_Institution :
Dept. of Electr. Power, New South Wales Univ., Sydney, NSW
fDate :
28 Jan-1 Feb 2001
Abstract :
Not only is there no uniformity in the method adopted for generator rotor overcurrent protection, but the AVR control algorithms do not directly assess the rotor´s temperature. Often, after rotor overcurrent protection has functioned following a sharp increase of excitation current, 90% of the rotor´s thermal capacity is still unused. A computationally reliable and fast method has been devised for assessing rotor temperature and its rate of change by monitoring each unit´s rotor current and voltage. Important benefits can be gained in system operation by utilising this new method to replace existing rotor overcurrent protections
Keywords :
electric current measurement; electric generators; machine protection; machine testing; monitoring; overcurrent protection; rotors; thermal analysis; voltage measurement; AVR control algorithms; current monitoring; excitation current; generator rotor overcurrent protection; rotor temperature assessment; rotor thermal capacity maximisation; voltage monitoring; Control systems; Power generation; Power system interconnection; Power system protection; Reactive power; Rotors; System testing; Temperature control; Thermal stability; Voltage control;
Conference_Titel :
Power Engineering Society Winter Meeting, 2001. IEEE
Conference_Location :
Columbus, OH
Print_ISBN :
0-7803-6672-7
DOI :
10.1109/PESW.2001.917035
