Low-voltage distribution network client phase identification method and system based on voltage fluctuation significance analysis

Abstract

The invention discloses a low-voltage distribution network customer phase identification method and system based on voltage fluctuation significance analysis. The method comprises the following steps: obtaining a complete voltage time sequence and a complete power time sequence; utilizing a dynamic sliding window model to extract a significant fluctuation difference section of the complete voltage time sequence of the three-phase feeder line; based on the significant fluctuation difference section and the complete voltage time sequence of all clients, client power supply phase matching is carried out, and if matching succeeds, a client power supply phase label is obtained; otherwise, taking the client with the phase matching failure as a phase fuzzy client; and based on the complete power time sequence of the three-phase feeder line and the complete power time sequences of all clients, power supply phase matching is carried out on the phase fuzzy clients by adopting a power conservation principle, and client power supply phase labels are obtained. According to the invention, accurate identification of the client power supply phase can be realized.

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