influence of single and multiple dry bands on critical flashover voltage of silicone rubber outdoor insulators: simulation and experimental study
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ID: 242501
2018
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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.
| Reference Key |
arshad2018energiesinfluence
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|---|---|
| Authors | ;Arshad;Muhammad Ali Mughal;Azam Nekahi;Mansoor Khan;Farhana Umer |
| Journal | acs combinatorial science |
| Year | 2018 |
| DOI |
10.3390/en11061335
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| URL | |
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