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Development of an interrupting chamber for 1000 kV high-speed grounding switches

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5 Author(s)
H. Mizoguchi ; Toshiba Corp., Kawasaki, Japan ; I. Hioki ; T. Yokota ; Y. Yamagata
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High-speed grounding switches (HSGS) for 1000 kV (UHV) transmission lines are required to interrupt a delayed zero current with a long arcing time. This requirement was met by allowing pressure rise in the opening operation to last efficiently for a long time through optimizing the exhaust volume and the residual volume of a puffer-type interrupting chamber and utilizing the effect of pressure rises due to arcing

Published in:

IEEE Transactions on Power Delivery  (Volume:13 ,  Issue: 2 )