Abstract:In Graz (Austria) exists a High Voltage Laboratory for more than 40 years which belongs to Graz University of Technology. Beside a shielded hall there is also an outdoor test field for simulation thun...In Graz (Austria) exists a High Voltage Laboratory for more than 40 years which belongs to Graz University of Technology. Beside a shielded hall there is also an outdoor test field for simulation thunderstorms with artificial rain. In the original version it was possible to generate AC voltages up to 1200 kilovolts, DC voltages up to 1100 kilovolts and lightning strikes up to 6 meter length. With the indoor dimensions of 35 meter length, 25 meter width and 21 meter height it was possible to handle all these voltages safe and without problems. In the last ten years countries like China, India or Brazil starts to install UHV (Ultra High Voltage) overhead lines which must be protected against lightning hazards of course. The necessary test levels for such components exceed the mentioned voltage levels. This increasing demand for high voltage testing in the UHV range was the reason for the upgrading of the laboratory to AC voltages up to 1500 kV, DC voltages up to 1500 kV and also the impulse generator was modified to produce lightning strikes up to 10 meters length. This paper will show the challenges of this upgrade and present examples for using these voltage levels.Read More
Publication Year: 2014
Publication Date: 2014-01-01
Language: en
Type: article
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