In this paper, energy functions were constructed that consider the action of the interline power-flow controller (IPFC) in the form of a supplement to the known structure-preserving energy functions. They are based on a structure-preserving frame and can be applied to an arbitrary number of IPFCs that may consist of an arbitrary number of series branches. The developed energy functions were applied for a transient-stability assessment using the Lyapunov direct method, and they proved to be adequate.

COBISS.SI-ID: 6985300

In this paper, a novel Energy-Based System Well-being Analysis framework (EBSWBA) is presented to assess the security of supply of small power systems. The framework combines the advantages of the well-known System Well-being Analysis (SWBA) and Expected Energy-Not-Served (EENS) approaches, thus overcoming the weaknesses of the SWBA by considering all key factors that influence system adequacy. The comparison of the results demonstrates the superiority of the EBSWBA over the SWBA in terms of rendered information about the system state as well as in terms of computational efficiency.

COBISS.SI-ID: 7200596