Abstract
Dry band formation on the surface of outdoor insulators is one of the main reasons leading to flashover and power outages. In this paper, a dynamic arc model is proposed for single and multiple dry bands configuration to predict the critical flashover voltage for silicone rubber outdoor insulators. An arc is modelled as a time dependent impedance consisting of a Resistor Inductor Capacitor (RLC) circuit. The effect of dry band location and existence of multiple dry bands on critical flashover voltage is investigated. To validate the proposed model, experiments were conducted in a climate chamber under controlled environmental conditions on rectangular silicone rubber sheets polluted using improved solid layer method based on IEC 60,507. Tests were conducted at different dry band configurations and pollution severity levels. A good correlation was found between experimental results and simulation results. This model can provide a good foundation for the development of mathematical models for station post insulators having multiple dry and clean bands and can be used in the design and selection of outdoor insulators for polluted conditions.
| Original language | English |
|---|---|
| Article number | 1335 |
| Number of pages | 17 |
| Journal | Energies |
| Volume | 11 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 24 May 2018 |
Keywords
- silicone rubber
- dry band
- pollution severity
- mathematical modelling
- flashover voltage
ASJC Scopus subject areas
- Control and Optimization
- Energy (miscellaneous)
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering
- Fuel Technology
- Renewable Energy, Sustainability and the Environment
Documents and Links
- Arshad et al (2018) Influence of single and multiple dry bands on critical flashover voltage of silicone rubber outdoor insulators: simulation and experimental study
© 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
