ONLINE STABILITY CONSTRAINT ASSESSMENT FOR LARGE COMPLEX POWER-SYSTEMS

Power systems around the world are increasingly subject to stability l imits. Variation in operating conditions from scenarios used for off-l ine studies require the adoption of transmission limits. The result is the operation of less economic generation systems, leading to additio nal constraint costs. From an operational perspective, any on-line met hods that could identify the generator contributions for a given stabi lity problem and the generation changes required to operate closer to stability limits would be most valuable. This paper presents new devel opments, which have been carried out at the University of Bath, UK, in the areas of on-line stability constraint cost management for large c omplex power systems. (C) 1998 Elsevier Science S.A. All rights reserv ed.