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Method and system for identifying electricity utilization state of electrical appliance

A technology of power consumption state and state transition equation, which is used in character and pattern recognition, instrumentation, data processing applications, etc.

Active Publication Date: 2017-07-11
OCEAN UNIV OF CHINA
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  • Claims
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Problems solved by technology

[0004] In order to solve the problem of identifying the complex power consumption state of electrical appliances in the background technology, the present invention provides a method: firstly, modeling and analysis of the power consumption state of electrical appliances by constructing a hidden Markov model, and then using the evolutionary particle filter algorithm , through the known observation sequence, to calculate the posterior probability density function of the most likely state sequence under this observation sequence, so as to realize the identification of the complex power consumption state of household appliances

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  • Method and system for identifying electricity utilization state of electrical appliance
  • Method and system for identifying electricity utilization state of electrical appliance
  • Method and system for identifying electricity utilization state of electrical appliance

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Embodiment Construction

[0127] Exemplary embodiments of the present invention will now be described with reference to the drawings; however, the present invention may be embodied in many different forms and are not limited to the embodiments described herein, which are provided for the purpose of exhaustively and completely disclosing the present invention. invention and fully convey the scope of the invention to those skilled in the art. The terms used in the exemplary embodiments shown in the drawings do not limit the present invention. In the figures, the same units / elements are given the same reference numerals.

[0128] Unless otherwise specified, the terms (including scientific and technical terms) used herein have the commonly understood meanings to those skilled in the art. In addition, it can be understood that terms defined by commonly used dictionaries should be understood to have consistent meanings in the context of their related fields, and should not be understood as idealized or over...

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Abstract

The present invention relates to a method and a system for identifying the electricity utilization state of an electrical appliance. The method comprises the steps of 1, based on the voltage and current data of the electrical appliance, calculating characteristic parameters, and constructing a characteristic data set for the electricity utilization working state of the electrical appliance; 2, constructing a hidden markov model for the electricity utilization working state of the electrical appliance, and training the model based on the characteristic data set for the electricity utilization working state of the electrical appliance obtained in the step 1, and obtaining optimal model parameters; 3, obtaining a state transition equation and an observation equation based on the optimal model parameters, calculating a posterior probability density function of a state sequence occurred in a known observation sequence, and finally realizing the identification for the complex electricity utilization state of the electrical appliance. The system comprises a data acquisition unit, a characteristics extraction unit, a hidden markov model constructing unit and an electrical appliance electricity utilization state identification unit.

Description

technical field [0001] The present invention relates to the field of smart electric meters, and more particularly, to a method and system for identifying power consumption status of electrical appliances. Background technique [0002] With many problems in the traditional electric meter, the development of smart electric meter is imminent. Implementing the development strategy of smart meters can enable users to obtain power supply with high security, high reliability, high quality, high efficiency and reasonable price. Smart meters are an important part of smart homes. Smart meters can monitor the electricity consumption information of different electrical appliances in the home, allowing users to accurately understand the electricity consumption of the home, which allows users to use the home more reasonably and effectively. electrical appliances. For most electrical appliances, there are generally only two states: on state and off state, such as electric lights, TV sets...

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Application Information

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IPC IPC(8): G06K9/62G06Q50/06
CPCG06Q50/06G06F18/214G06F18/295
Inventor 殷波王燊魏志强王亭洋朱治丞
Owner OCEAN UNIV OF CHINA
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