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

fYear

2009

fDate

19-23 July 2009

Firstpage

489

Lastpage

492

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/ICPADM.2009.5252385

Filename

5252385