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Energy consumption depolymerization method based on low frequency energy consumption information and home energy management system

An energy management system and depolymerization technology, applied in the field of digital home energy management, can solve the problems of expensive measurement equipment and complex analysis methods, and achieve the effects of convenient home application, low cost, convenient acquisition and stability

Inactive Publication Date: 2014-12-17
OCEAN UNIV OF CHINA
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Problems solved by technology

[0006] The purpose of the present invention is to provide an energy depolymerization method based on low-frequency energy consumption information, which solves the technical problems that the existing energy depolymerization technology adopts a high-frequency signal analysis method, expensive measuring equipment, and complicated analysis methods

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  • Energy consumption depolymerization method based on low frequency energy consumption information and home energy management system
  • Energy consumption depolymerization method based on low frequency energy consumption information and home energy management system
  • Energy consumption depolymerization method based on low frequency energy consumption information and home energy management system

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Embodiment Construction

[0031] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0032] The present invention adopts Hidden Markov Model (HMM) to model the hidden state of all household appliances. The model contains hidden variables describing the start / stop status of each home appliance. Since only aggregated energy consumption information is collected, the state changes of these variables cannot be directly measured. The Hidden Markov Model (HMM) can decompose the final state sequence into a series of independent sub-sequences, in addition to providing basic description of state information. It is suitable for a time series caused by multiple independent factors. State transition is modeled and described.

[0033] This embodiment uses directly measured aggregated household low-frequency energy signals, such as power signals measured by household electric meters, as the direct observation input of the factorial hidden Mark...

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Abstract

The invention relates to an energy consumption depolymerization method based on low frequency energy consumption information and a home energy management system, wherein the method comprises the following steps: (1) during a period of time, acquiring the low frequency energy consumption information of polymerization household appliances; (2) describing the working states of all the household appliances during the period of time on basis of a hidden Markov model; (3) adopting an expectation-maximisation algorithm to solve the parameter values of the hidden Markov model, so the state variable values of all the depolymerization household appliances within given time series can be obtained; and (4) the separate energy consumption information of all the household appliances can be identified according to the depolymerization state variable values. The method realizes energy depolymerization through acquiring and analyzing the low frequency energy consumption polymerization information and other steady state characteristics, thus, various household appliances are accurately identified, and the energy consumptions of the household appliances are determined. The existing household appliances and circuits are not needed to reconstruct, so the method is low in cost, is convenient for household application and has high popularization value.

Description

Technical field [0001] The invention relates to the technical field of digital home energy management, in particular to a method for de-aggregating energy consumption of household electrical appliances based on low-frequency energy consumption information and a home energy management system adopting the method. Background technique [0002] In recent years, due to the global climate change, energy crisis and other factors, the issue of energy conservation has attracted widespread attention from all countries in the world. The two main ways of household energy saving are reduction of household energy consumption and effective use of energy. The former requires a one-time investment, such as replacing and upgrading existing home appliances, while the latter requires continuous manual operations, such as controlling the daily on and off time of equipment such as air conditioners and water heaters, and achieving the goal of saving energy through the accumulation of time. Ordinary ho...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B13/04
Inventor 许晓伟陶冶王晓东宫会丽丁香乾王鲁升
Owner OCEAN UNIV OF CHINA
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