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- Title
A Compact UHF Antenna Based on Hilbert Fractal Elements and a Serpentine Arrangement for Detecting Partial Discharge.
- Authors
Xiang Lin; Jian Fang; Ming Zhang; Kuang Yin; Yan Tian; Yingfei Guo; Qianggang Wang
- Abstract
Efforts to protect electric power systems from faults have commonly relied on the use of ultra-high frequency (UHF) antennas for detecting partial discharge (PD) as a common precursor to faults. However, the effectiveness of existing UHF antennas suffers from a number of challenges such as limited bandwidth, relatively large physical size, and low detection sensitivity. The present study addresses these issues by proposing a compact microstrip patch antenna with fixed dimensions of 100 mm × 100 mm × 1.6 mm. The results of computations yield an optimized antenna design consisting of 2nd-order Hilbert fractal units positioned within a four-layer serpentine arrangement with a fractal unit connection distance of 3.0 mm. Specifically, the optimized antenna design achieves a detection bandwidth for which the voltage standing wave ratio is less than 2 that is approximately 97.3% of the UHF frequency range (0.3-3 GHz). Finally, a prototype antenna is fabricated using standard printed circuit board technology, and the results of experiments demonstrate that the proposed antenna is capable of detecting PD signals at a distance of 8 m from the discharge source.
- Subjects
UHF antennas; PARTIAL discharges; ELECTRIC power system faults; MICROSTRIP antennas; ANTENNA design; SERPENTINE; ANTENNAS (Electronics)
- Publication
Energy Engineering, 2024, Vol 121, Issue 5, p1127
- ISSN
0199-8595
- Publication type
Article
- DOI
10.32604/ee.2024.046861