Abstract
This paper deals with the induced voltage along cross-bonded cable sheaths of a 220 kV mixed overhead-cable transmission line when a lightning surge propagates from the overhead line. The simulation is performed by using EMTP-ATP software to analyze the effect of surrounding environment of the cable on the sheath voltage and the surge impedance thereof. The results show that the sheath voltage can exceed the impulse withstand voltage of the cable jacket in overhead cables. The results also suggest that the sheath voltage limiters (SVL) need to be installed at the junction between minor sections of overhead cables to minimize the effects of lightning induced voltage on the sheath.
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