Sequence hybrid calculation technique - An approach for clustering power systems analysis

Clustering power systems approach has been recently discussed as a sustainable strategy for distributed generation. Aim of this concept is to turn a passive distribution network to be an active network by clustering power systems into small areas and establishing downsized conventional control strategy. Consequently, each cluster can be operated based on each area. Obviously, the cluster network structure can be realized as many interconnected grids, which can be resulted in the complexity of systems analysis. In order to handle that issue, analysis based on sequence components and hybrid calculation technique is proposed. This method is able to include the behavior of interconnected cluster into the analysis. Therefore, the cluster analysis results in decoupling power systems analysis. Furthermore, the proposed method is able to solve the unbalanced conditions of distribution e.g. asymmetrical feed in power and untransposed power cable. The proposed method is verified by comparing the results with three phase Newton Raphson load flow calculation and DIgSILENT PowerFactory program. In addition, the proposed method can be utilized not only for the clustering power systems analysis, but also for the general purpose system analysis.