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Electromagnetic interference with electronic apparatus by switching surges in GIS-cable system

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6 Author(s)
S. Nishiwaki ; Toshiba Corp., Kawasaki, Japan ; K. Nojima ; S. Tatara ; M. Kosakada
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Thyristor malignitions and protector relay failures caused by gas circuit breakers closing in the gas insulated switchgear (GIS) of a power cable system could not be controlled by reducing the ground impedance or adding surge absorbing capacitors. As a result, a study was carried out on this problem with a 66 kV mock-up apparatus installed in a factory. It was found that malignitions and failures such as those mentioned above could be controlled by preventing 10 MHz ultra high-frequency surges emitted by the GIS from leaking out into the grounding system

Published in:

IEEE Transactions on Power Delivery  (Volume:10 ,  Issue: 2 )