Effective Load Carrying Capability of Interties

In this paper, we examine the effects of interconnecting two power systems with correlated loads by an intertie of probabilistic transfer capacity. A closed form solution for calculating the loss- of-load probability (LOLP) for two intertied systems is proposed. The method could be extended to three or more intertied systems. The use of the method is illustrated by numerical examples, with results presented in terms of LOLP, effective load carrying capability (ELCC) and equivalent additional capacity for the tied systems.