Network Partitioning for Reactive Power/Voltage Control Based on Dempster-Shafer Evidences Fusion
Zhigang Lu, Qin Sijuan, Chang Lei, MA Liye · Power System Technology · 2010
In view of the extension of power system, partitioning parallel computation can improve computational efficiency. In allusion to network partitioning for reactive power/voltage control, a new way based on subjective and objective Dempster-Shafer evidence fusion for the partitioning is proposed. Firstly, according to electrical distance, the partitioning support degree of basic probability distribution and the partitioning support degree of fuzzy sample similarity are calculated; then Dempster-Shafer evidence fusion is applied to the two support degrees to improve the reliability of classification and to form objective evidence for partitioning. If the objective evidence of partitioning of a certain node is inadequate, in comprehensive evaluation the group's advice can also be considered to interfuse the subjective and objective evidences comprehensively to obtain the partitioning result that is more conform to practice. The results of partitioning test by IEEE 118-bus system prove that the proposed partitioning strategy is feasible and effective.