期刊
2022 12TH INTERNATIONAL CONFERENCE ON POWER AND ENERGY SYSTEMS, ICPES
卷 -, 期 -, 页码 79-83出版社
IEEE
DOI: 10.1109/ICPES56491.2022.10072917
关键词
medium voltage distribution network; Copula entropy; maximum spanning tree; dependencies; Copula entropy correlation matrix
资金
- project of electric power artificial intelligence engineering technology research center of Shanghai Science and Technology Commission [19DZ2252800]
- State Grid Corporation of China Science and Technology Project Grant [520940210013]
This study proposes a topology identification method for medium voltage distribution network based on Copula entropy. It aims to solve the problems of frequent changes in network topology and difficult identification. The method effectively measures the dependency of global variables without linear and Gaussian assumptions, and demonstrates its effectiveness and advantages through simulation.
In order to solve the problems of frequent changes in distribution network topology and difficult topology identification, a topology identification method for medium voltage distribution network based on Copula entropy (CE) is proposed. First, a Copula function containing multivariable dependencies is established. Second, the CE defined by the Copula function is estimated by using the nonparametric method to obtain the Copula entropy correlation matrix between nodes. Finally, the maximum spanning tree algorithm is used to complete the topology identification of the medium voltage distribution network. The method measures the precision of the dependency of global variables, and the measured dependency is not related to the attributes of a single variable, and the local optimal problem is avoided. At the same time, this method has no linear and Gaussian assumptions, which is more conducive to the application in the actual distribution network in the future. The effectiveness and robustness of the proposed method are verified by IEEE33 bus distribution network simulation, and it shows some advantages over the existing methods.
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