A method and device for itemized electric energy metering based on steady-state characteristic waveform matching

Abstract

The invention discloses an electric energy subentry metering method and device based on stable characteristic waveform matching. The method comprises the steps of: collecting stable characteristic waveforms of household loads, carrying out load identification based on the similarity with a load standard characteristic waveform in a database, calculating the electric energy consumed by each kind of load according to the power variation of the loads and the switching moments of the loads, and carrying out subentry metering of the household loads. The device comprises a signal collection module, a data processing module, a data storage module, a display module and a communication module. The device is capable of collecting, storing and analyzing electric signals in real time and forming electric energy subentry metering reports for users to carry out querying. The electric energy subentry metering reports are uploaded to a cloud end power grid company for reference. The power consumption is low, the cost is low, installation is easy, detailed data is provided to the user for understanding the electric consumption condition, and the device can also be used as one terminal device in a power grid electric energy measurement system so as to provide reference to the power grid company for understanding the data such as the load structure.

Description

technical field [0001] The invention relates to the fields of electric load identification and detection and electric energy metering, in particular to an electric energy sub-item metering method and device based on steady-state characteristic waveform matching. Background technique [0002] Electric energy is a clean, efficient and convenient terminal energy carrier. Under the development trend of vigorously promoting the development of low-carbon economy, large-scale development of renewable energy, and actively responding to climate change, increasing the proportion of electric energy in terminal energy consumption has become a common choice for countries all over the world. . With the development of my country's economy and the optimization and upgrading of industrial structure, this proportion will continue to increase, so it is particularly important to strengthen the saving of electric energy. Research studies have shown that introducing better feedback mechanisms in...

AI Technical Summary

Problems solved by technology

Based on the analysis of the current research status, the reasons why the non-intrusive electric energy sub-item measurement method has not been widely used mainly include the following aspects: 1) The load characteristics of the actual electrical equipment are various, and for a certain type or The algorithm proposed based on the characteristics of several types of electrical equipment lacks versatility; 2) Due to the interference of noise in the system, it is difficult to obtain high accuracy based on the algorithm of event detection; 3) The method based on supervised learning requires a large number of samples for training / learning, reducing its attractiveness

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