Abstract
In UHV DC test base of state grid corporation and Tibet high altitude test base, rod-rod gap discharge characteristic tests under the same condition of arrangement are carried out. Positive and negative polarity switching and lightning impulse discharge characteristic curves for rod-rod long air gap under the condition of different elevations are obtained; dispersion of different altitudes rod-rod gap discharge voltage is given; by applying the existing altitude correction methods IEC60060-1 and IEC60071-2 to an altitude of 4300 m, altitude correction coefficients of switching and lightning impulse discharge voltage are calculated; contrast analysis between them and correction coefficients obtained through test results are carried out; applicability of the above two correction methods at an altitude of 4300 m is preliminarily discussed. Results show that disposability of the rod-rod gaps discharge voltage under the same impulse voltage waveform at different altitudes are basically the same, and that the polarity and waveform parameters have a certain impact on the altitude correction factor of the rod-rod gap discharge voltage.
Published Version
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