Title :
A microcomputer-based load angle and frequency measurement
Author :
Montero, Luis R Rosales ; Mota, Wellington S. ; Jacobina, Cursino B.
Author_Institution :
UFPB, Campina Grande, Brazil
Abstract :
This paper describes a microcomputer based load-angle and line frequency measurement for synchronous machines. A photodetector senses the rotor position and its output is compared with a reference signal from the terminal voltage. The phase difference represents the load angle. The line frequency is obtained from the terminal voltage. The design of the scheme uses one PC 386 IBM microcomputer for control, storage and display. The sensor´s response is fast. The system also provides a feedback signal for synchronous turbine/generator load/frequency control purposes. The performance of the developed system was investigated with a micro-synchronous generator set. Experimental results are presented
Keywords :
angular measurement; automatic frequency control; computerised instrumentation; frequency measurement; load regulation; machine control; machine testing; microcomputer applications; position measurement; synchronous generators; PC 386 IBM microcomputer; angular displacement; digital discrete measurement; equivalent circuit; feedback signal; line frequency measurement; load-angle measurement; load/frequency control; micro-synchronous generator set; microcomputer based measurement; phase difference; photodetector; reference signal; rotor position; synchronous machine; synchronous turbine/generator; terminal voltage; three-phase machine; Displays; Feedback; Frequency measurement; Microcomputers; Photodetectors; Signal generators; Synchronous generators; Synchronous machines; Turbines; Voltage;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 1996. IMTC-96. Conference Proceedings. Quality Measurements: The Indispensable Bridge between Theory and Reality., IEEE
Conference_Location :
Brussels
Print_ISBN :
0-7803-3312-8
DOI :
10.1109/IMTC.1996.507454
