Abstract
Service restoration following a complete or partial collapse starts with reenergizing a transmission line from black-start generators. Ferranti effect and line charging problems can arise as unloaded transmission line is reenergized. This paper presents analytical results on the primary restorative transmission system focused on the problems during the early restoration process. Methodologies are presented that handle load pick-up to compensate Ferranti effect, and terminal voltage and reactive capability limitation of black-start generators about self-excitation. An algorithm for static analysis about these methodologies is developed, and EMTDC simulation for verifying the efficiency of the algorithm is performed.
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