Partial discharge ultrahigh-frequency detection Peano fractal antenna

Abstract

The invention discloses a partial discharge ultrahigh-frequency detection Peano fractal antenna, wherein the partial discharge detection Peano fractal antenna comprises a dielectric layer and a conductor layer, wherein the conductor layer is laid on the upper surface of the dielectric layer; the conductor layer comprises a plurality of end-to-end bend conductor sections; the conductor sections are arranged according to the Peano three-stage fractal principle so as to form a three-stage radiation antenna element; the covering surface of the conductor layer on the dielectric layer is a rectangular surface; the side length of the covering surface is the side length of the conductor layer; and the conductor sections are provided with feeding points. The Peano fractal antenna provided by the invention has good direction property, is wide in frequency band, has small standing-wave ratio, is convenient for impedance match, and can meet the requirement of transformer partial discharge on-line monitoring ultrahigh-frequency detection.

Description

Technical field [0001] The invention involves the field of fractal antenna design, which specializes in a local discharge ultra -high -frequency detection of fractal antennas that adopts the PEANO third -order principle design. Background technique [0002] The transformer is one of the most critical equipment in the power system. Its normal operation is an important guarantee for the safety, reliable, high -quality, and economic operation of the power system. It must prevent and reduce the occurrence of transformer failures and accidents.However, due to the long -term operation of the transformer, faults and accidents are always unavoidable, and failure and accidents are due to many reasons.In the transformer failure, the insulation failure occupies a high proportion, and a local discharge phenomenon will occur before the insulation failure. Therefore, the online monitoring of local discharge of the transformer can be found in time.The insulation failure is conducive to the safe...

AI Technical Summary

Problems solved by technology

At present, the antennas commonly used for on-line partial discharge monitoring of transformers for UHF detection mainly include Archimedes double-arm planar helical antennas, conical antennas, and dipole antennas. Practical application experience shows that the detection frequency band of existing antennas is narrow, A lot of partial discharge information is lost; the output impedance is low, which is not conducive to forming a good impedance match with the signal transmission line; the direction angle is narrow, which is not conducive to receiving weak partial discharge signals

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