PERFORMANCE EVALUATION OF AN HVDC LINK WITH A CAPACITOR COMMUTATED INVERTER CONNECTED TO A VERY WEAK RECEIVING AC NETWORK

Mohamed Khatir - Sid-Ahmed Zidi - Mohammed-Karim Fellah - Samir Hadjeri - Rabie Amiri

   The capacitor commutated converter (CCC) is a new type of HVDC converter topology which shows promise for use in long distance transmission via cables. This technology is, thus, a potential candidate for use in HVDC transmission across large bodies of water. In this paper the technology of Capacitor Commutated Converters (CCC) is presented and the advantages of the CCC for high power transmission are shown. The transient performance evaluations are presented using PSCAD/EMTDC. The system is derived from the first CIGR\'E HVDC Benchmark model. The results demonstrate the superior performance of a CCC link, when connected to a very weak AC system in terms of increased transmission capacity and improved stability of the AC network.

Keywords: HVDC transmission, CIGRE HVDC Benchmark model, CCC inverter, very weak receiving AC system

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