Low-voltage distribution network topology identification method based on principal component analysis and voltage similarity

Abstract

The invention provides a low-voltage distribution network topology identification method based on principal component analysis and voltage similarity. The method comprises the following specific steps: a master station issues a correction command to correct a concentrator; the concentrator broadcasts the correction command to the electric energy meter and corrects the electric energy meter; the intelligent distribution transformer terminal acquires the electric energy data received by the data monitoring unit of the branch electric energy meter at regular time; the electric energy data of the branch electric energy meter-meter box electric energy meter is calculated and analyzed through adoption of a principal component analysis method to obtain a topological structure of the branch electric energy meter-meter box electric energy meter; a voltage correlation coefficient of the user electric energy meter and each branch electric energy meter is calculated; and according to the magnitude of the voltage correlation coefficient, the user electric energy meters are screened out under the same branch electric energy meter, and a meter box electric energy meter-user electric energy meter topological structure is obtained. The method is simple in operation, only needs to measure voltage data of the branch-meter box and the meter box-user, guarantees the data accuracy, and carries out local analysis to obtain the topological structure of the low-voltage power distribution network.

Description

technical field [0001] The present application relates to the technical field of low-voltage distribution network, in particular to a method for identifying the topology of low-voltage distribution network based on principal component analysis and voltage similarity. Background technique [0002] The 400V low-voltage power supply network is an important public infrastructure supporting social development and the national economy. It bears the important responsibility of directly supplying power to users and is a key link in ensuring the quality of power supply. Therefore, its construction level directly affects the power supply service level of users. How to comprehensively improve the management of the station area, identify the topological relationship between the station area and the meter box, the branch road and the meter box, and the meter box and the user, realize the real-time and accurate reporting of the topology structure, and realize the "distribution transformer-...

AI Technical Summary

Problems solved by technology

[0005] This application provides a low-voltage distribution network topology identification method based on principal component analysis and voltage similarity to solve the problem in the prior art that it is impossible to accurately obtain the corresponding topology between the intelligent distribution terminal, that is, the transformer and the user's electric energy meter. structure, thus causing the problem of meter reading errors

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