Portable partial discharge detection device
First Claim
1. A portable device for remotely detecting partial discharges in a discharge source object, the portable device comprising:
- a housing or portable container for the portable device;
a wide-band antenna that operates as an electric field sensor for reception of pulse signals generated by partial discharges, contained in the housing;
wherein the wide-band antenna comprises a combination of a first planar conductor with a second conductor, wherein the second conductor comprises a profile converging toward the first planar conductor at one point or along a line, wherein the dimensions of said second conductor are smaller by approximately two orders of magnitude than a wavelength of the electric field caused by the partial discharge to be detected by the wideband antenna, wherein the first planar conductor functions as a ground plane, and wherein the second conductor is mechanically supported by an insulated support to allow the electric field wavelength to be detected to be picked up from a surface of the first planar conductor opposite to the second conductor, so that the wide-band antenna is non-resonant in a band from approximately 0.1 MHz to approximately 100 MHz.
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Accused Products
Abstract
A partial discharge detection device for detecting and measuring partial discharges in electric systems or components, which delivers signals having a form much resembling that of the radiated pulse, for improved identification and analysis. The device is of small size, totally insulated and self-powered, and allows measurements to be performed with the highest safety with no need for direct connection, thereby allowing operators to stand at a distance and avoid any system shutdown while making measurements. Furthermore, it can also detect and deliver the sync signal, which is obtained by picking up the supply voltage of the discharge generating components.
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Citations
16 Claims
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1. A portable device for remotely detecting partial discharges in a discharge source object, the portable device comprising:
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a housing or portable container for the portable device; a wide-band antenna that operates as an electric field sensor for reception of pulse signals generated by partial discharges, contained in the housing; wherein the wide-band antenna comprises a combination of a first planar conductor with a second conductor, wherein the second conductor comprises a profile converging toward the first planar conductor at one point or along a line, wherein the dimensions of said second conductor are smaller by approximately two orders of magnitude than a wavelength of the electric field caused by the partial discharge to be detected by the wideband antenna, wherein the first planar conductor functions as a ground plane, and wherein the second conductor is mechanically supported by an insulated support to allow the electric field wavelength to be detected to be picked up from a surface of the first planar conductor opposite to the second conductor, so that the wide-band antenna is non-resonant in a band from approximately 0.1 MHz to approximately 100 MHz. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification