Title :
Detection of defects in groundwall insulation of HV generator stator windings with a microcontroller system
Author :
Wu, Xinyan ; Xie, Hengkun ; Wu, Songzhen ; Liu, Guangbin
Author_Institution :
State Key Lab. of Electr. Insulation for Power Equipments, Xi´´an Jiaotong Univ., China
Abstract :
In this paper, a multi-function acoustic signal analysis system with a microcontrol chip (TMS320c25) is introduced for detecting defects within groundwall insulation in generator stator windings. When the stator winding is tapped with a vibrator, a sound containing defects information is produced, picked up by an acoustic transducer and analyzed in the frequency domain. The detected results are displayed on a liquid crystal display and printed by a microprinter. Compared with conventional detecting methods, the system has advantages such as higher resolution, real time display of results and convenient operation
Keywords :
acoustic signal processing; acoustic transducers; automatic test equipment; automatic testing; electric breakdown; electric generators; frequency-domain analysis; insulation testing; machine insulation; machine testing; microcontrollers; power engineering computing; real-time systems; stators; HV generator stator windings; TMS320c25; acoustic transducer; defects detection; frequency domain; groundwall insulation; liquid crystal display; microcontroller; microprinter; multi-function acoustic signal analysis; real time; testing automation; vibrator; Acoustic signal detection; Acoustic transducers; Frequency domain analysis; Information analysis; Insulation; Liquid crystal displays; Real time systems; Signal analysis; Signal generators; Stator windings;
Conference_Titel :
Properties and Applications of Dielectric Materials, 1994., Proceedings of the 4th International Conference on
Conference_Location :
Brisbane, Qld.
Print_ISBN :
0-7803-1307-0
DOI :
10.1109/ICPADM.1994.414070
