Open AccessBreakdown process experiments of cap‐and‐pin insulators and their EMT leader progression model implementation
Author(s) -
Koehler Fabian,
Swingler Jonathan,
Peesapati Vidyadhar
Publication year - 2018
Publication title -
iet generation, transmission and distribution
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.92
H-Index - 110
eISSN - 1751-8695
pISSN - 1751-8687
DOI - 10.1049/iet-gtd.2017.0916
Subject(s) - impulse (physics) , impulse generator , generator (circuit theory) , air gap (plumbing) , materials science , mechanics , curve fitting , process (computing) , electronic engineering , computer science , engineering , physics , composite material , thermodynamics , power (physics) , quantum mechanics , machine learning , operating system
Here, breakdown tests of cap‐and‐pin glass insulators with arcing horns, conducted at two different HV labs, are presented. Since only volt–time curves are measured, a curve‐fitting approach to determine leader progression model parameters is taken, which involves modelling of the impulse generator in detail and inclusion of the Motoyama model to simulate the breakdown. Furthermore, a comparison of the breakdown simulation results with LPM parameters for a pure air gap and the measurements is accomplished. Finally, a curve‐fitting procedure is developed to fit the resulting volt–time curves from simulations to the measurements.