Real-time electric appliance identification method and system based on sliding window

Abstract

The invention discloses a real-time electric appliance identification method and system based on a sliding window. The method comprises steps that ammeter power data of a sample electric appliance combination is acquired, sample rising edge vectors are extracted to acquire a sample set, and electric appliance types of the sample rising edge vectors are calibrated; length We of an edge sliding window is acquired through calculation, and constraint is carried out through utilizing the length of the edge sliding window to acquire length Wt of the sliding window and a sliding distance L of the edge sliding window; according to the length of the edge sliding window and the length of the sliding window, a rising edge vector is extracted from acquired real-time power data, an origin of the rising edge vector is taken as an origin of the edge sliding window, sliding for (L-1) times is carried out, the rising edge vector is further utilized to acquire L sliding rising edge vectors, and an electric appliance type of the corresponding sample rising edge vector having the smallest distance to the sliding rising edge vector is taken as an electric appliance type of the corresponding sliding rising edge vector. The method is advantaged in that real-time electric appliance identification accuracy is high, and identification efficiency is high.

Description

technical field [0001] The invention belongs to the field of electric appliance identification, and more particularly relates to a real-time electric appliance identification method and system based on a sliding window. Background technique [0002] With the development of social economy, electric energy has become an indispensable energy in people's life. Due to the continuous advancement of science and technology, the types of electrical appliances are becoming more and more diverse. People are no longer satisfied with the single information data of total electricity consumption in the traditional sense, but tend to grasp the usage of household electrical equipment in real time. With the emergence of smart meters, power information is not limited to power consumption, and real-time current, voltage, active power, reactive power and other power data can also be collected, making it possible for us to further obtain power consumption information. The concretization of elect...

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Problems solved by technology

[0005] In view of the above defects or improvement needs of the prior art, the present invention provides a real-time electrical appliance identification method and system based on a sliding window, the purpose of which is to obtain the corresponding sample when the distance between the sliding rising edge vector and the sample rising edge vector is the smallest. The electrical appliance type of the rising edge vector is the electrical appliance type of the sliding rising edge vector, thereby solving the technical problems of inaccurate detection and lagging detection results in the prior art

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