Constellation of Condensation and Raindrops and Its Effect on the DC Flashover Voltage of Inclined Silicone Insulation

Autor:	Stefan Kornhuber, Fatma Bouchelga, Klaus Dieter Haim, Rabah Boudissa
Rok vydání:	2019
Předmět:	angle of inclination Control and Optimization Materials science 020209 energy zigzag arrangement Energy Engineering and Power Technology 02 engineering and technology lcsh:Technology 01 natural sciences chemistry.chemical_compound Silicone Flashover voltage 0103 physical sciences SiR 0202 electrical engineering electronic engineering information engineering Arc flash Electrical and Electronic Engineering Engineering (miscellaneous) Condensed Matter::Quantum Gases 010302 applied physics lcsh:T Renewable Energy Sustainability and the Environment Direct current Condensation electrical surface discharge Mechanics dc flashover Volume (thermodynamics) chemistry Electric discharge rain and natural condensation Energy (miscellaneous) Voltage
Zdroj:	Energies, Vol 12, Iss 18, p 3549 (2019) Energies Volume 12 Issue 18
ISSN:	1996-1073
DOI:	10.3390/en12183549
Popis:	The purpose of this paper is to characterize the arrangement of raindrops and natural condensation and its effect on the direct current voltage&rsquo s flashover of a hydrophobic silicone insulating surface under variable inclination. Two devices have been realized, one for on-site exposure of insulation samples under rain and condensation, and the other for laboratory use in order to allow the variation of the angle of their inclination. The temporal evolution of the constellation of raindrops and natural condensation as well as the electrical discharge produced in the laboratory was visualized. The results emanated from the on-site investigation allowed the identification of the most reproducible type of arrangement of rainwater and natural condensation drops as well as the estimation of their respective volume. The results from the laboratory clearly show the existence of an interval of the insulation&rsquo s inclination angle, which allows the best approximation of its electrical performance to what was obtained in the absence of these drops. Moreover, these same results also inform us about some very critical situations to avoid regarding the insulation by a judicious choice of its inclination angle.
Databáze:	OpenAIRE
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