Abstract
Capacitive voltage and current induction is one of the most significant phenomenon's in high voltage GIS substation that the presence of it can impose problems to the substation operation. This paper has simulated the various equipment of 420 kV of Karoon4 substations such as powerhouses, input and output lines, bus-bar and bus-duct. EMTP-RV software has been used to simulate the equipment. Then with the considering of single-phase and three-phase faults on the line in critical conditions, capacitive voltage and current induction to the power network by parallel capacitor with circuit breaker is surveyed. The results are the maximum values of probable induced current and voltage that can be occurred. The breaker equipment of must be able to interrupt this value of current.
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