Short Circuit and Induced Voltage Transient Study on a Planned 1000 MW HVDC-VSC Cable Link
نویسندگان
چکیده
TERNA, the Italian TSO, is planning new HVDC interconnections with neighboring countries including underground links based on VSC technology; short circuit transient studies of such links require accurate cable line modeling in a frequency range from dc to 10 kHz at least. The finite section approach was used to this purpose. Short-circuit transient simulation results evidenced significant temporary overvoltages following a single pole-to-earth cable fault, due to unfaulted cable charging by free-wheeling diodes has been evidenced in the study. Results are in good agreement with theory and proved to be also useful for evaluating the induced voltage on nearby communication cables and to evaluate the possible application of surge arresters.
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