Abstract
The effect of high electrical stress on rubber materials is investigated by performing breakdown tests and tracking resistance tests on selected samples. The study is focused on the relationship between the dielectric strength and the thickness of the samples, as well as the influence of the interfaces between different layers of material. Tracking resistance tests are also performed on the rubber material. The purpose is to provide a complete study of the applicability of the rubber material in thunderstorm environments.
Highlights
The effect of high electrical stress on rubber materials is investigated by performing breakdown tests and tracking resistance tests on selected samples
New technologies have been developed to increase the efficiency of wind turbine blades, some of which involve the use of rubber materials in the blade structure
The rubber behavior under high electric fields is investigated by performing breakdown and tracking resistance tests
Summary
– Wind turbine blade equipped with a rubber flap system, installed on the blade trailing edge. Four different rubber materials are used for both the breakdown and the tracking resistance tests. The upper electrode is spherical, with a diameter of 12.5 mm, and it is connected to the high impulse voltage generator. The test follows the procedure described in [5] It consists of applying a high voltage impulse with a rise. The test starts at relatively low voltage, where there is no risk of breakdown, and it is increased progressively until the breakdown of the material is reached.
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