M1-2.2 - Inductive Harvester and Data Transmission on Medium-Voltage High Power Cable Shields for Autonomous Sensor Nodes

Event

23. ITG/GMA-Fachtagung Sensoren und Messsysteme 2026
2026-06-09 - 2026-06-10
Nürnberg

Band

Vorträge

Chapter

Energie- und Umwelttechnik

Author(s)

M. Lenzhofer, D. Holzmann - Silicon Austria Labs GmbH, Villach (Austria), D. Sturm - KNG-Kärnten Netz GmbH, Klagenfurt am Wörthersee (Austria)

Pages

338 - 342

DOI

10.5162/sensoren2026/M1-2.2

ISBN

978-3-910600-11-9

Price

free

Abstract

Medium-voltage (MV) cable systems represent a critical component of modern electrical infrastructure, where failures often occur at cable joints due to environmental stress and aging. Continuous monitoring of such joints is therefore highly desirable; however, their underground installation makes conventional communication approaches impractical. This paper presents an inductively coupled communication system that utilizes the existing cable infrastructure as a transmission medium. A low-power embedded system is developed, combining resonant inductive coupling with software-based signal detection using the Goertzel algorithm. Experimental results demonstrate reliable data transmission over several hundred meters under realistic load conditions. The influence of cable configuration, load current, and interference sources is analyzed, and design limitations are discussed. The results confirm the feasibility of the approach and provide guidelines for future system optimization.