Modelling Surface Electric Discharge Propagation on Polluted Insulators under AC Voltage
Mohamed Lamine Amrani,
Slimane Bouazabia,
Issouf Fofana,
Fethi Meghnefi,
Marouane Jabbari,
Djazia Khelil,
Amina Boudiaf
Affiliations
Mohamed Lamine Amrani
Laboratory of Electrical Industrial Systems (LSEI), Department of Electrical Engineering, University of Science and Technology Houari Boumediene, BP 32 El Alia, Bab Ezzouar 16111, Algeria
Slimane Bouazabia
Laboratory of Electrical Industrial Systems (LSEI), Department of Electrical Engineering, University of Science and Technology Houari Boumediene, BP 32 El Alia, Bab Ezzouar 16111, Algeria
Issouf Fofana
Modelling and Diagnostic of Electrical Power Network Equipment Laboratory (MODELE), Department of Applied Sciences, Université du Québec à Chicoutimi, Chicoutimi, QC G7H 2B1, Canada
Fethi Meghnefi
Modelling and Diagnostic of Electrical Power Network Equipment Laboratory (MODELE), Department of Applied Sciences, Université du Québec à Chicoutimi, Chicoutimi, QC G7H 2B1, Canada
Marouane Jabbari
Modelling and Diagnostic of Electrical Power Network Equipment Laboratory (MODELE), Department of Applied Sciences, Université du Québec à Chicoutimi, Chicoutimi, QC G7H 2B1, Canada
Djazia Khelil
Laboratory of Electrical Industrial Systems (LSEI), Department of Electrical Engineering, University of Science and Technology Houari Boumediene, BP 32 El Alia, Bab Ezzouar 16111, Algeria
Amina Boudiaf
Laboratory of Electrical Industrial Systems (LSEI), Department of Electrical Engineering, University of Science and Technology Houari Boumediene, BP 32 El Alia, Bab Ezzouar 16111, Algeria
In this contribution, a mathematical model allowing for the prediction of the AC surface arc propagation on polluted insulators under non-uniform electric field is proposed. The approach is based on the experimental concept of Claverie and Porcheron. The proposed model, which makes it possible to reproduce the surface electric discharge, includes a condition for arrest of the propagating discharge. The electric field at the tip of the discharge is the key parameter governing its random propagation. A finite element approach allows for mapping of the electric field distribution while the discharge propagation process is simulated in two dimensions. The voltage drop along the arc discharge path at each propagation step is also taken into account. The simulation results are validated against experimental data, taking into account several electro-geometric parameters (distance between electrodes, pollution conductivity, radius of high-voltage electrode, length of the plane electrode). Good agreement between computed and experimental results were obtained for various test configurations.
