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Special transformer user metering abnormity monitoring method and system

A technology that measures abnormalities and changes users specifically. It is applied in the direction of measuring electrical variables, measuring devices, and measuring current/voltage. It can solve problems such as untargeted current abnormalities, achieve high reliability and applicability, minimize voltage drop, and overcome inconspicuous effect

Pending Publication Date: 2021-06-11
国网福建省电力有限公司营销服务中心 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, in the current identification methods, there is no method for abnormal current, especially the actual current and the collected current have a linear relationship

Method used

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  • Special transformer user metering abnormity monitoring method and system
  • Special transformer user metering abnormity monitoring method and system
  • Special transformer user metering abnormity monitoring method and system

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Embodiment Construction

[0075] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0076] It should be pointed out that the following detailed description is exemplary and is intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0077] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combina...

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Abstract

The invention provides a special transformer user metering abnormity monitoring method and system. The special transformer user metering abnormity monitoring method comprises the steps: acquiring data including three-phase voltage, current and power factor curves at a target metering point and a reference metering point at the same moment; calculating transformer impedance; calculating the corrected voltage amplitude, the corrected voltage included angle and the voltage phase deviation of the target metering point; calculating the high-voltage side line voltage and the high-voltage side phase voltage of the target metering point; calculating the high-voltage side phase voltage of the reference metering point; constructing an evaluation equation according to the high-voltage side voltages of the target metering point and the reference metering point; adjusting the current coefficient of the target metering point, recalculating the high-voltage side phase voltage of the target metering point, and finding the minimum value of the evaluation equation; when the value of the evaluation equation is minimum, judging the current coefficient at the moment, and if the difference value between the current coefficient and 1 is larger than a preset value, judging that current collection at the target metering point is abnormal. According to the invention, metering misaccuracy or electricity stealing behaviors caused by current abnormity can be accurately identified.

Description

technical field [0001] The invention relates to the technical field of electric power monitoring, in particular to a method and system for monitoring anomalies in metering of special variable users. Background technique [0002] Abnormal metering is one of the reasons for inaccurate electricity metering and inability to accurately recover electricity charges. Common metering abnormalities include uneven electric energy indication value, electric energy meter flying away, electric energy meter running backward, electric energy meter stopping, electric energy meter rate setting abnormality, electric quantity fluctuation abnormality, automatic verification abnormality and demand abnormality, etc. At present, the above-mentioned abnormalities are generally identified by manual experience screening or correlation analysis of collected non-electricity (abnormal events, etc.) and electric quantity parameters. [0003] However, in the current identification methods, there is no met...

Claims

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Application Information

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IPC IPC(8): G01R35/04G01R19/00G01R25/00G01R27/02
CPCG01R35/04G01R19/00G01R25/00G01R27/02
Inventor 林华夏桃芳陈前高琛王雅平詹世安李建新詹文丁忠安鄢盛腾陈吴晓邓伯发黄阳玥郭凛
Owner 国网福建省电力有限公司营销服务中心
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