Transformer area phase identification method and device based on clustering analysis

Abstract

The invention discloses a transformer area phase identification method and device based on clustering analysis. The method comprises the following steps: S01, obtaining more than two kinds of operation time sequence data of each user electric meter in a transformer area to be identified; S02, performing comprehensive processing on each operation time sequence data of each user electric meter to obtain a comprehensive time sequence data set; S03, performing clustering analysis on the comprehensive time sequence data set by using spectral clustering, and dividing three clusters to respectively correspond to three phase sequences A, B and C of the transformer area phase; S04, obtaining a phase identification result of the to-be-identified transformer area according to a clustering analysis result. The method can achieve the phase recognition of batch data, and has the advantages of being simple in implementation method, low in cost, high in recognition precision and efficiency, wide in single-time recognizable range, safe, reliable and the like.

Description

technical field [0001] The invention relates to the technical field of station area phase identification, in particular to a method and device for station area phase identification based on cluster analysis. Background technique [0002] In the low-voltage distribution network, three-phase imbalance is a common problem in the low-voltage (LV) distribution network, and its main cause is the unbalanced load on the low-voltage side. Unbalanced three-phase loads will not only reduce the power supply efficiency of lines and distribution transformers, but also may cause damage to phase conductors, switches, distribution transformers and other components in severe cases, resulting in failure of the power grid and potential safety hazards. For example, when the problem of unbalanced low-voltage three-phase load occurs, there may be no current in a single line or the coexistence of multiple currents, which will increase the current carrying pressure of the line, and the excessive los...

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Problems solved by technology

Unbalanced three-phase load will not only reduce the power supply efficiency of lines and distribution transformers, but also may cause damage to phase conductors, switches, distribution transformers and other components in severe cases, resulting in failure of the power grid and potential safety hazards

[0004] The current phase (station zone) identification usually uses a phase / station zone identifier to identify the signal crosstalk between the stations, but this type of method can only identify one user at a time, not only the recognition speed is slow, but additional terminal equipment needs to be installed , expensive and not easy to carry, etc., it has been difficult to meet the phase identification requirements of the current complex topological station area

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