Low-voltage power distribution network topology reconstruction method and device

Abstract

The embodiment of the present invention provides a low-voltage power distribution network topology reconstruction method and device, wherein the method comprises the steps of determining the incidencerelation vectors of the buses according to the sequential voltages of the buses and a linear regression equation of an Lasso algorithm; combining the incidence relation vectors of the buses into a correlation coefficient matrix, and determining a target correlation coefficient matrix of the correlation coefficient matrix via an and rule; when the Lasso algorithm does not satisfy a sufficient condition, determining a determination matrix of a voltage matrix by the preset function relationship; determining the positions of the elements greater than 0 in the determination matrix, and modifying the elements at the corresponding positions in the target correlation coefficient matrix as 0; determining the buses corresponding to the positions of the non-zero elements in the modified target correlation coefficient matrix as the buses that are directly connected in a zone area. According to the embodiment of the present invention, the calculation process of correcting the Lasso algorithm is simpler and more convenient, and the accuracy of a network topological diagram model established by the corrected matrix is higher.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a method and device for topology reconfiguration of a low-voltage distribution network. Background technique [0002] With the development of Energy Internet, the low-voltage distribution network is not only the energy consumption terminal, but also the access carrier of distributed energy. The rapid access of distributed energy brings opportunities and challenges to the low-voltage distribution network. [0003] In order to describe the network and its data of the low-voltage distribution network, it is necessary to reconstruct the network topology graph model, and then infer the network topology physical model through the network topology graph model. In the distribution network, a station area is defined as a physical network including several buses and branches, and the bus in the network topology physical model of the distribution network is represented by the nodes ...

AI Technical Summary

Problems solved by technology

[0005] In the prior art method of reconstructing low-voltage distribution network topology identification based on time-series data, in reconstructing the network topology graph model, when using rules such as "and", "or", and "and-or" as supplementary rules to modify the matrix obtained by the Lasso algorithm, The logical relationship itself is relatively complicated and difficult to understand, which makes the calculation process of this supplementary rule modified Lasso algorithm more complicated, and the final matrix obtained is not accurate.

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