2009/02/13 by H. Zangl, Hubert Zangl, T. Bretterklieber +2 · 7 citations
Engineering · Physics and Astronomy · #Condition monitoring #Electric power #Electric power transmission #Electrical conductor #Electrical engineering #Engineering #High voltage #Icing #Icing and De-icing Technologies #Lightning and Electromagnetic Phenomena #Operability #Overhead (engineering) #Overhead line #Physics #Power (physics) #Reliability engineering #Thermal Analysis in Power Transmission #Transmission line #Voltage
paper · doi:10.1109/tim.2009.2012943
openalex publication_date 2009/02/13 · openalex created_date 2025/10/10 · openalex updated_date 2026/06/26
For electric power transmission, high-voltage overhead power lines play an important role, as the costs for power transmission are comparatively low. However, the sag of the conductors (e.g., due to temperature variations, aging, or icing of conductors as a result of extreme weather conditions) may increase safety margins and limit the operability of these power lines. Furthermore, heavy loads due to icing or vibrations excited by wind streams increase the risk of line breakage. With online condition monitoring of power lines, critical states can be detected early, and appropriate countermeasures can be applied. In this paper, we investigate possibilities for monitoring devices that are directly mounted onto a conductor. The feasibility of powering the device from the electric field, protection of electronic circuitry from strong electric fields, and data transmission by means of a wireless link is demonstrated, as well as its operability during the presence of strong magnetic fields due to high currents and transient signals due to partial and spark discharge events.