A non-invasive identification method for wall breakers

Abstract

Disclosed is a non-intrusive identification method for a high-speed blender. The method comprises the following steps: step 1: collecting voltage and current signals at a main incoming line of a user by means of voltage and current sensors, so as to form sampling sequences u, i of voltages and currents; step 2: scanning a voltage signal u and a current signal i, and calculating a steady-state average power increment ΔP and a time Δt1 which is required for an abrupt change; step 3: calculating a difference ΔI1 between the maximum thrice harmonic current after an abrupt change occurs and a steady-state thrice harmonic current before the abrupt change occurs, and a time Δt2 required for the abrupt change; step 4: calculating a difference ΔI2 between thrice harmonic currents before and after an abrupt change occurs, and a time Δt3 required for the abrupt change; and step 5: calculating a ratio k of the steady-state average power increment to an abrupt change time. The present invention can accurately, effectively and quickly identify a high-speed blender, and has the advantages of being simple and economical, and being easily popularized, applied, etc.

Description

technical field [0001] The invention belongs to the field of electric power research, and specifically relates to a non-invasive identification method for a wall breaker. Background technique [0002] Residential load is an important part of power load, and its proportion of power consumption is gradually increasing. Therefore, it is an urgent need to establish an intelligent power consumption system that can realize the visualization of household power consumption. According to the power consumption of each electrical equipment, make a reasonable energy-saving plan, purchase energy-saving equipment in a targeted manner, and test the energy-saving effect, so as to reduce energy consumption and electricity bills. The visualization of electricity consumption is also considered to be one of the effective means of stabilizing peak electricity consumption. It can encourage users to choose electricity consumption during low-valley electricity price periods such as nighttime, so as...

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Problems solved by technology

[0003] The existing research and literature have studied the model and operating characteristics of the load of the breaker, but there is no literature that proposes an accurate, effective and rapid identification of the load of the breaker. According to the real-time average of the breaker The power and the time-domain law of the third harmonic current, the method to judge whether it is the start-up of the breaker

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