Load identification method and device based on transient and steady state feature fusion of intelligent electric meter

Abstract

The invention provides a load identification method and device for air conditioner load transient and steady state feature fusion based on an intelligent electric meter, and the method comprises the steps: obtaining a voltage, current and harmonic effective value data sequence through Fourier transform, and obtaining waveforms of different devices; dividing the device into four stages according to a waveform rule of the device, namely a starting stage, a transition stage, an operation stage and an ending stage; further calculating according to different equipment stages to obtain transient characteristics and steady-state characteristics; and carrying out load identification on different load waveforms based on different characteristics. According to the method, the problem of transient characteristic coupling of multiple devices in traditional load identification is optimized, the precision of load identification is improved, and improvement of the management scheduling capability of a power grid is facilitated.

Description

technical field [0001] The present invention relates to the field of distribution and utilization of electricity, and more specifically, to a load identification method and device based on fusion of transient steady-state characteristics of smart meters. Background technique [0002] With the development of society, there are more and more types of household electrical appliances, and the electricity consumption of residents has also risen sharply. It is necessary to identify the electrical appliances and air conditioners that account for the largest electricity consumption among residents. The change of temperature constantly adjusts its own operation mode, and it is difficult to accurately identify the air conditioner with similar start-stop characteristics. Contents of the invention [0003] In order to improve the accuracy of load identification and better predict the adjustable load power, the present invention proposes a load identification method based on fusion of ...

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Problems solved by technology

[0002] With the development of society, there are more and more types of household electrical appliances, and the electricity consumption of residents has also risen sharply. It is necessary to identify the electrical appliances and air conditioners that account for the largest electricity consumption among residents. The change of temperature constantly adjusts its own operation mode, and it is difficult to accurately identify the air conditioner with similar start-stop characteristics

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