INTERACTIVE LONG-TERM SIMULATION FOR POWER-SYSTEM RESTORATION PLANNING

The problem of restoring a power system following a complete blackout is complex and multi-faceted. Many control actions have to be performe d on time, while constraints such as power balance and system stabilit y have to be carefully respected. In this paper, the application of lo ng-term dynamic analysis in studying frequency and voltage responses d ue to load and generation mismatches in isolated systems or during ext ension of the existing system in the restoration phase is presented. S imulation results covering the main steps of the Hellenic power system restoration process following a recent total blackout are presented a nd discussed.