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A Method for Decomposing Electrical Loads Non-Intrusively

A non-intrusive, power load technology, applied in electrical components, circuit devices, AC network circuits, etc., can solve problems such as insufficient data and inability to measure and monitor power, and achieve the effect of improving time domain resolution

Active Publication Date: 2021-01-29
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the data in this literature is not perfect in power supervision, and it cannot effectively monitor power metering in real time and online.

Method used

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  • A Method for Decomposing Electrical Loads Non-Intrusively
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  • A Method for Decomposing Electrical Loads Non-Intrusively

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Experimental program
Comparison scheme
Effect test

Embodiment

[0039] Such as figure 1 As shown, a method for decomposing a non-intrusive electrical load includes the following steps:

[0040] Step 1: Collect and input the power consumption data of standard industrial users to obtain the waveform diagram of the power load signal of industrial users;

[0041] Such as figure 2 As shown, taking a steel industry as an example to carry out non-intrusive load decomposition, through the collection and input of relevant instrument data of the steel company, the power load data of the company from March to September are obtained, and the sampling period is 5 minutes. figure 2 The middle abscissa represents the number of sampling points, and the ordinate represents the signal amplitude.

[0042] Step 2: Carry out wavelet packet decomposition on the electrical load signal waveform diagram of industrial users, filter out high-frequency signals of industrial electrical loads, and retain low-frequency signals;

[0043] Wherein: Step 2 includes the...

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Abstract

The invention discloses a method for decomposing a non-intrusive electric load. Belonging to the technical field of power load monitoring, the method for decomposing non-intrusive power loads includes the following steps: 1. Collect and input power consumption data of standard industrial users to obtain a waveform diagram of power load signals of industrial users; 2. The wavelet packet decomposition is performed on the waveform diagram of the user's electric load signal; 3. The low-frequency signal is converted and decomposed by fast Fourier transform. The method of decomposing non-intrusive power load adopts the combination of wavelet packet decomposition (WPD) and fast Fourier transform (FFT) to decompose the signal and transform the spectrum of the load information of industrial users, and obtain the operation of each production process of industrial users The situation and cycle, and combined with the production capacity of the process kWh to calculate the relevant production capacity and output.

Description

technical field [0001] The invention relates to the technical field of power load monitoring, in particular to a method for decomposing non-intrusive power loads. Background technique [0002] For the power system, power load monitoring is of great significance. It is not only conducive to improving the load composition, guiding users to consume reasonably, reducing electricity costs, but also conducive to the optimal allocation of national power resources. The power load decomposition data can enable power users to have a more detailed understanding of the power consumption of various electrical equipment in different periods, help them formulate reasonable energy-saving plans, adjust the use of electrical equipment, and purchase energy-saving equipment in a targeted manner, so that Under the premise of not affecting their normal production and life, power users can reduce power consumption and electricity expenses. The power load decomposition data also helps the power co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/00
Inventor 李文峰白宏坤郑雅楠卜飞飞华远鹏韩丁王圆圆杨用春
Owner STATE GRID CORP OF CHINA