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Method of reducing influence of power grid harmonics on non-intrusive load identification

A load recognition, non-intrusive technology, applied in character and pattern recognition, instruments, computer parts, etc., can solve the problem of low power load recognition accuracy, and achieve the effect of improving accuracy

Active Publication Date: 2017-12-01
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

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  • Method of reducing influence of power 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 application relates to the technical field of electric power monitoring, and in particular, to a method for reducing the influence of power grid harmonics on non-intrusive load identification. The method includes the steps of acquiring a first current feature quantity and a first voltage feature quantity at a user electric power entrance; calculating a second current feature quantity according to the first current feature quantity and a current weight coefficient; calculating a second voltage feature quantity according to the first voltage feature quantity and a voltage weight coefficient; obtaining a modified current feature quantity according to the second current feature quantity and the second voltage feature quantity; and identifying a user's electricity load according to the modified current feature quantity. Since the modified current feature quantity is closer to the current feature quantity generated by equipment and has a smaller difference from the current feature quantity in an electric power load feature library, the modified current feature quantity reduces the influence of the power grid harmonics on the user electric power load identification, and the improvement of the load recognition accuracy is facilitated.

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 Applications(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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