Title :
Noise rejection strategy and experimental research on partial discharge at DC voltage
Author :
Niu, Haiqing ; Cavallini, A. ; Montanari, G.C. ; Zhang, Yao
Author_Institution :
Sch. of Electr. Power, South China Univ. of Technol., Guangzhou, China
Abstract :
Partial discharges (PD) in HVDC equipment are not the predominant degradation factor. However, they can be a failure precursor (particularly when electrical trees are formed), so that monitoring PD could be a tool to infer imminent failures. In order to monitor PD on site, one major problem at DC voltage is the absence of tools able to distinguish noise from PD signals. In this paper, corona, surface and internal discharges measured under DC voltage are extracted from noise and interference resorting to a new strategy of noise rejection at DC voltage.
Keywords :
condition monitoring; corona; failure analysis; noise abatement; partial discharges; power apparatus; surface discharges; transmission networks; DC voltage; HVDC equipment; PD monitoring; corona; failure precursor; infer imminent failures; internal discharges; noise rejection strategy; partial discharge; surface discharges; Circuit testing; Corona; Degradation; HVDC transmission; Integrated circuit interconnections; Needles; Noise measurement; Partial discharges; Surface discharges; Voltage; DC voltage; cross correlation analysis; noise rejection; partial discharge;
Conference_Titel :
Properties and Applications of Dielectric Materials, 2009. ICPADM 2009. IEEE 9th International Conference on the
Conference_Location :
Harbin
Print_ISBN :
978-1-4244-4367-3
Electronic_ISBN :
978-1-4244-4368-0
DOI :
10.1109/ICPADM.2009.5252385
