Journal
IEEE TRANSACTIONS ON POWER ELECTRONICS
Volume 35, Issue 11, Pages 11380-11390Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TPEL.2020.2989757
Keywords
Insulators; Resonators; Windings; Inductance; Monitoring; Copper; High-voltage techniques; Composite insulator; domino-resonator wireless power transfer (WPT) system; high-voltage (HV) power grid; online monitoring system; planar printed circuit board (PCB) winding
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Funding
- Hong Kong Research Grant Council under the General Research Fund Projects [17261316, 17210817]
- Theme-Based Research Scheme [T23-701/14-R/N]
- China Southern Power Grid Technology Project [GDKJQQ20161151]
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Nowadays, smart grid online monitoring systems are widely used in high-voltage (HV) power transmission networks, leading to the requirement of reliable power supply units for the monitoring equipment. In this article, we present a novel solution to harvest energy from the magnetic field around a 110-kV transmission line and transmit the energy to the online monitoring equipment on the transmission tower over 1.1 m insulation distance. Printed circuit board resonators are covered by the composite insulation material forming the first HV insulator with wireless power transfer (WPT) capability. The prototype of the HV insulator has passed the rigorous HV tests at 550 kV. The WPT characteristic of the HV insulator including the effects of corona rings is analyzed and verified by practical measurement.
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