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A method to reduce the influence of grid harmonics on non-intrusive load identification

A technology of load identification and current harmonics, applied in character and pattern recognition, instruments, calculations, etc., can solve the problem of low power load identification accuracy, and achieve the effect of improving accuracy

Active Publication Date: 2020-08-25
YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
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Problems solved by technology

[0005] This application provides a method for reducing the impact of power grid harmonics on non-intrusive load identification, so as to solve the problem of low accuracy of user electric load identification

Method used

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  • A method to reduce the influence of grid harmonics on non-intrusive load identification
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  • A method to reduce the influence of grid harmonics on non-intrusive load identification

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Embodiment Construction

[0018] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description serve to explain the principles of the application.

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, In other words, other drawings can also be obtained from these drawings without paying creative labor.

[0020] Embodiments of the present invention provide a method for reducing the impact of power grid harmonics on non-intrusive load identification, such as figure 1 shown, and combined with the user's load for R 1 In the case of a linear load, the steps of the method are described below. It should be noted that this method is ...

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Abstract

The present application relates to the technical field of electric power monitoring, in particular to a method for reducing the influence of grid harmonics on non-intrusive load identification. The method includes: acquiring the first current characteristic quantity and the first voltage characteristic quantity at the electric power inlet of the user; calculating the second current characteristic quantity according to the first current characteristic quantity and the current weight coefficient; and calculating the second current characteristic quantity according to the first voltage characteristic quantity and the voltage weight coefficient to calculate a second voltage characteristic quantity; obtain a corrected current characteristic quantity according to the second current characteristic quantity and the second voltage characteristic quantity; and identify a user’s electric load according to the corrected current characteristic quantity. Since the corrected current characteristic quantity is closer to the current characteristic quantity generated by the equipment, and the difference from the current characteristic quantity in the electric load characteristic database is small, the corrected current characteristic quantity reduces the influence of grid harmonics on user electric load identification , which is beneficial to improve the load recognition accuracy.

Description

technical field [0001] The present application relates to the technical field of electric power monitoring, in particular to a method for reducing the influence of grid harmonics on non-intrusive load identification. Background technique [0002] Power load monitoring is an important part of the power grid system. It is not only conducive to analyzing the load composition, guiding users to consume reasonably, reducing electricity costs, but also conducive to the optimal allocation of national power resources. Therefore, it is very necessary to build an efficient load monitoring system. [0003] At present, non-intrusive power load monitoring and identification methods mainly include two categories: monitoring and identification technology based on steady-state characteristics and monitoring and identification technology based on transient characteristic events. The monitoring and identification technology based on steady-state characteristics is to collect the steady-state ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/62
CPCG06F18/2193
Inventor 曹敏唐立军黄星刘毅尹福荣魏龄赵旭
Owner YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
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