A load switch detection and identification method and system with adaptive threshold
An adaptive threshold, load switch technology, applied in the direction of measuring electricity, measuring devices, measuring electrical variables, etc., can solve the problem of low load recognition accuracy, and achieve the effect of improving the recognition accuracy and the accuracy.
Active Publication Date: 2019-07-09
OCEAN UNIV OF CHINA
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[0005] The invention provides a load switch detection and identification method with an adaptive threshold, and applies the non-intrusive load identification method to the power consumption control system of smart home appliances, which solves the problem of low accuracy of load switch detection and load identification
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[0055] 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.
[0056] 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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The invention discloses a self-adaptive threshold load turning-on and turning-off detection and identification method and system. The method includes the following steps: collecting current analog signals and voltage analog signals of power utilization of user households; processing the current analog signals and the voltage analog signals, and obtaining current digital signals and voltage digital signals; calculating a power intensity difference value between two adjacent periods on the basis of the current digital signals and the voltage digital signals, and classifying loads according to the power difference value; calculating a current intensity difference value of the two adjacent periods, comparing the current intensity difference value with a preset threshold, and determining whether turning-on and turning-off events of the loads occur; extracting signals features on the basis of the voltage digital signals and the current digital signals after the turning-on and turning-off events of the loads occur; and classifying and identifying the loads according to the signal features, and outputting types of the loads. Classification is performed according to different types of load power, different comparison thresholds are set, and thus the load turning-on and turning-off event detection accuracy is improved.
Description
technical field [0001] The present invention relates to the field of power metering, and more specifically, to a method and system for detecting and identifying a load switch with a phase-adaptive threshold. Background technique [0002] The smart grid is the development goal of the future grid, and the realization of the smart grid depends on the realization of non-intrusive load identification technology. The non-intrusive load identification technology needs to complete the detection of the load switch state, the extraction of the electrical characteristics of the load and the identification of the load. In the implementation of non-intrusive load identification technology, due to the diversity and complexity of loads, it is difficult to find a method that can accurately detect the switching status of various loads. [0003] At present, there are many methods for load switch detection, mainly including waveform matching, current method, power method, etc. The most common...
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IPC IPC(8): G01R31/00
CPCG01R31/00
Inventor 殷波魏志强李文晓丛艳平朱治丞黄贤青
Owner OCEAN UNIV OF CHINA