Ptc type electric heating non-intrusive identification method based on power harmonic characteristics

Abstract

The invention discloses a PTC type electric heating non-intrusive identification method based on power harmonic characteristics. Voltage and current are collected at a wire inlet end; the ratio k1 ofthe starting abrupt change power to the time required for abrupt change, the ratio k2 of the maximum abrupt change power to the time required for abrupt change, the ratio k3 of the maximum starting abrupt change power to the steady-state operation power after abrupt change, and the ratio k4 of the increment of the third harmonic to the time required for abrupt change are calculated; whether a userstarts PTC type electric heating or not is judged according to magnitudes of the four ratios . A basis is provided for calculating power consumed by PTC type electric heating, a non-intrusive load monitoring decomposition technology is perfected and developed, a user can know the electric energy consumption composition of the user, the electric energy consumption is reduced to the maximum extent,the electric charge expenditure is reduced, and corresponding auxiliary judgment can be made for fault diagnosis of the user.

Description

technical field [0001] The invention relates to a non-invasive identification method for PTC electric heating based on power harmonic characteristics, which belongs to energy-saving and environment-friendly electricity utilization technology. Background technique [0002] At present, the proportion of my country's residential electricity consumption is 12% of the total demand, while that of the United States is 36%. With the development of social economy and the improvement of people's living standards, there is still a lot of room for growth in residential electricity consumption. At the same time, the acquisition of household daily load curves is conducive to promoting the development of smart grid and demand response. Therefore, it is an urgent need to establish an intelligent power consumption system that can realize the visualization of household power consumption. Purchase energy-saving equipment and test the energy-saving effect, thereby reducing energy consumption ...

AI Technical Summary

Problems solved by technology

At present, the research on NILMD technology is still at the stage of theoretical research. There is no literature to propose an accurate, effective and fast identification method for PTC electric heating. According to the real-time average power of PTC electric heating and the third harmonic current The method of judging whether it is a PTC type electric heating start-up based on the law of time domain

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