Title :
Electromagnetic interference with electronic apparatus by switching surges in GIS-cable system
Author :
Nishiwaki, S. ; Nojima, K. ; Tatara, S. ; Kosakada, M. ; Tanabe, N. ; Yanabu, S.
Author_Institution :
Toshiba Corp., Kawasaki, Japan
fDate :
4/1/1995 12:00:00 AM
Abstract :
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
Keywords :
circuit breakers; distribution networks; earthing; electromagnetic interference; industrial power systems; power cables; power system protection; power system relaying; power system transients; surge protection; switchgear testing; test facilities; thyristor applications; 10 MHz; 66 kV; electromagnetic interference; factory; gas insulated switchgear; gas-blast circuit breakers; grounding system; industry; power cable system; power systems; protector relay failures; switching surges; thyristor malignitions; ultra high-frequency surges; Circuit breakers; Control systems; Electromagnetic interference; Gas insulation; Geographic Information Systems; Power system protection; Power system relaying; Protective relaying; Surge protection; Thyristors;
Journal_Title :
Power Delivery, IEEE Transactions on
