Interaction of Surface Gradient, Precipitation Rate and Conductor Surface Treatment on Corona Induced Audible Noise of AC Overhead Transmission Lines

Publikation: Beitrag in Buch/Bericht/KonferenzbandBeitrag in einem Konferenzband

Abstract

Overhead Transmission lines are prone to emit audible noises under foul weather conditions (e.g. rain or fog), which can be a significant source of annoyance for people living close to the line. Apart from mere fulfilment of emission limits given by legislature, transmission system operators nowadays often seek to reduce audible noise emissions as far as possible to minimize public opposition towards overhead lines. A very promising approach for the reduction of audible noise emissions are hydrophilic conductor surface treatments, which influence the way water drops form on the conductors. However, very little is known about the operating behavior and limitations of hydrophilic conductors. This contribution therefore strives to illustrate how the electric field intensity around the conductors (surface gradient) and the precipitation rate affect the effectiveness and the emission behavior of hydrophilic conductors compared to standard conductors. The presented results are derived from a newly developed prediction model, which is based on noise emission measurements performed on 25 different bundle conductor arrangements carried out in an acoustically optimized high voltage laboratory. The compiled results indicate that hydrophilic surfaces can provide significant noise reductions, which tend to diminish with increasing surface gradient. Above a certain point of intersection, hydrophilic conductors exhibit higher emission levels than standard conductors. Since this behavior has been observed to depend strongly on the bundle conductor geometry, results for various numbers of sub-conductors and sub-conductor diameters are presented. From a practical point of view, this contribution shall raise awareness regarding the optimal utilization of hydrophilic conductors by illustrating the principal correlations and by providing first guidelines.

Originalspracheenglisch
Titel7th IEEE International Conference on High Voltage Engineering and Application, ICHVE 2020 - Proceedings
UntertitelICHVE 2020 - Proceedings 6 September 2020
Herausgeber (Verlag)Institute of Electrical and Electronics Engineers
ISBN (elektronisch)9781728155111
DOIs
PublikationsstatusVeröffentlicht - 6 Sep 2020
Veranstaltung7th IEEE International Conference on High Voltage Engineering and Application: ICHVE 2020 - Virtual, Beijing, China
Dauer: 6 Sep 202010 Sep 2020

Publikationsreihe

Name7th IEEE International Conference on High Voltage Engineering and Application, ICHVE 2020 - Proceedings

Konferenz

Konferenz7th IEEE International Conference on High Voltage Engineering and Application
KurztitelICHVE 2020
LandChina
OrtVirtual, Beijing
Zeitraum6/09/2010/09/20

ASJC Scopus subject areas

  • !!Mechanics of Materials
  • !!Electronic, Optical and Magnetic Materials
  • !!Safety, Risk, Reliability and Quality
  • !!Energy Engineering and Power Technology
  • !!Electrical and Electronic Engineering

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