Partial discharge detection device

Details Partial discharge detection device Partial discharge detection device

2007-12-03

2010-06-29

Nguyen, Hoai-An D (Department: 2831)

Electricity: measuring and testing

Fault detecting in electric circuits and of electric components

Of individual circuit component or element

C324S536000

Reexamination Certificate

active

07746082

ABSTRACT:
The present invention provides a high-performance partial discharge detection device which is user-friendly and compact and which allows detection of the electromagnetic waves caused by partial discharge, over a wide bandwidth with a simple constitution and a favorable S/N ratio. The waveguide antenna which receives electromagnetic waves that leak from the insulating spacer is attached to the outer circumferential face of the insulating spacer. The waveguide antenna is constituted by a waveguide portion and a coaxial cable connector which is installed on the waveguide portion. The waveguide portion has a metal short-circuit plate provided at one end thereof, and an opening formed at the other end thereof, which covers part of the outer circumferential face of the insulating spacer.

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Machine Translation of JP 10341520 A.
Hirata, H., “Coaxial Waveguide Transition,” Basics of Micro-wave Engineering, Chapter 5.7, pp. 95-97, (2004).
Iwashita, H. et al., “Antenna Device for Monitoring Insulation,” Patent Abstracts of Japan, JP No. 03-078429, Publication Date: Apr. 3, 1991, (1 Sheet).
Rokunohe, T. et al., “Partial Discharge Detection Method,” Patent Abstracts of Japan, JP. No. 2002-071743, Publication Date: Mar. 12, 2002, (1 Sheet).
Ishigaki, K. et al., “Partial Discharge Detector, and Partial Discharge Testing Method,” Patent Abstracts of Japan, JP. No. 2006-329636, Publication Date: Dec. 7, 2006, (1 Sheet).

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