Investigation of spinning reserve impact on isolated systems DC interconnection feasibility

This paper investigates the optimal size of a potential DC interconnection between an isolated island system and the mainland grid. Adequate spinning reserve is perhaps the most prominent security requirement in isolated systems. Thus this paper focuses specifically on how the optimal interconnection solution is affected by spinning reserve (SR) requirements and cost. A Monte-Carlo based probabilistic load flow is used to assess the benefits of each interconnection scenario. Indicative results are presented regarding a possible submarine interconnection of the Greek island of Crete with the mainland grid.