Journal
IET GENERATION TRANSMISSION & DISTRIBUTION
Volume 12, Issue 3, Pages 780-789Publisher
INST ENGINEERING TECHNOLOGY-IET
DOI: 10.1049/iet-gtd.2017.0678
Keywords
particle swarm optimisation; load flow; probability; pattern clustering; wind power plants; particle swarm optimisation clustering method; PSO algorithm; probabilistic load flow calculation; wind generation; deterministic load flow; IEEE 57-bus test system; IEEE 118-bus test system; Monte Carlo method; k-means clustering method
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In this study, a clustering scheme based on the particle swarm optimisation (PSO) algorithm is used for probabilistic load flow calculation in the presence of wind generations. In this method, input random variables are first clustered in several groups according to their similarity and then a representative is assigned to each group by the PSO algorithm; finally, the deterministic load flow is performed. Using this technique, computational time is meaningfully decreased, while an acceptable level of accuracy is achieved. The IEEE 57-bus and IEEE 118-bus test systems were selected for the case study to demonstrate the performance of the proposed method. The results were compared with those of the Monte Carlo as well as K-means clustering methods from the accuracy and computation time points of view. Simulation results show that the introduced method significantly reduced the computational burden while keeping a high level of accuracy.
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