Title :
Partial Discharge Online Monitoring for Hydro-generator
Author :
Yuan, Wan ; Chuangli, Gong ; Zhipeng, Wei ; Pengcheng, Deng
Author_Institution :
Wu-ling Electr. Power Corp., Changsha, China
Abstract :
The use of partial discharge (PD) online monitoring as an indicator of hydro-generator stator insulation condition, is well known. In this paper, a set of partial discharge online monitoring system for hydro generator (HPDMS) with the characteristics of high reliability is developed, and the de-noise method of the system is introduced, In succession, the influence of PD sensors installation on hydro-generator´s single phase grounding fault is investigated. The system has successfully checked out a stator insulation failure, the partial discharge trends when the stator winding is in failure are shown and the reason of the failure is explained, the actual failure of the stator winding is consistent with the analysis result, which greatly increases the credibility of the PD online monitoring technology.
Keywords :
AC generators; computerised monitoring; earthing; fault diagnosis; hydroelectric power; machine insulation; partial discharges; reliability; sensors; stators; PD sensor installation; denoising method; hydrogenerator single phase grounding fault; hydrogenerator stator insulation condition; partial discharge online monitoring; stator insulation failure; stator winding; Discharges; Generators; Insulation; Monitoring; Partial discharges; Sensors; Stator windings; Hydro-generator; online monitoring; partial discharge; stator in sulation;
Conference_Titel :
Computer Distributed Control and Intelligent Environmental Monitoring (CDCIEM), 2011 International Conference on
Conference_Location :
Changsha
Print_ISBN :
978-1-61284-278-3
Electronic_ISBN :
978-0-7695-4350-5
DOI :
10.1109/CDCIEM.2011.331
