A POWER NETWORK ISLANDING

摘要

The invention concerns a system for controlling a real-time islanding of an electrical power network (203) for mitigating the impact of disturbances which the power network may experience, said power network comprising generator buses (209), load buses (211) and transmission lines (213) interconnecting said buses, said system comprising : - control means (205) for identifying different classes of coherent generator buses, - control means (205) for subdividing the power network into disjoint domains (231a-231d) where each domain is composed of a single generator bus and a corresponding set of load buses, - control means (205) for separating said disjoint domains (231a-231d) into two different groups, a first group consisting of domains (231a, 231b) having coherent generator buses and a second group (231c, 23Id) consisting of domains having all other generator buses, - control means (205) for determining an initial partition boundary (217a) composed of a set of partition lines which correspond to transmission lines connecting first group buses to adjacent second group buses, - control means (205) for transferring one by one load buses which are linked by said partition lines from one group of said first and second groups to the other one of said two groups while updating at each time the elements of both groups and the corresponding set of partition lines until a minimum load-generation imbalance within both updated groups has been reached, - control means (205) for determining a final partition boundary (217) composed of the updated set of partition lines, and - splitting means (207) for splitting the power network into two islands (303a, 303b) according to the final partition boundary.