An Intelligent Controlled Islanding Scheme for Power Systems

GRANDA, N.; COLOMÉ, G.

Porto

Congreso; ISAP 2015 Conference Intelligent Systems Applications to Power Systems; 2015

In this paper a new Intelligent Controlled Islanding Scheme (ICIS) able to change its behavior according to the system state is presented. As a first step, generators are classified into coherent groups by means of a recursive clustering algorithm applied to thosee measurements delivered by Phasor Measurement Units (PMU). In a second one, tie-lines to be opened in order to create islands are determined by means of concepts based on graph theory, shortest electrical distance and active power imbalance. A reduced frequency response model is appliedto determine the power imbalance limits on each island. Finally, a DC power flow based procedure is used to assess and control possible overloads after islanding. The 39 bus - New England System is choosed to test the proposed islanding scheme showing its capability to avoid power systems collapse.