Cluster Partition Index System and Evaluation Method of Large-scale Grid-Connected Distributed Generations

Abstract

With the increasing penetration rate of renewable energy in power system, the cluster partition of large-scale Distributed Generations (DGs) can optimize dispatching control and operation monitoring of power grid, and ensure stable and efficient access of distributed power to power grid. The traditional cluster partition method based on single criterion cannot meet the needs of network planning and operation. In this paper, the structural requirements, functional requirements and flexible requirements are fully considered in the cluster division, and a comprehensive evaluation index system for cluster division is established. Then comprehensive evaluation method is proposed. The trapezoidal membership function is used for fuzzy evaluation, and the order relation method is used to determine the index weights. Finally, we use an example to show that the comprehensive effectiveness of this cluster partition index system of large-scale grid-connected DGs.