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Distribution area household meter phase relation inspection method based on voltage time sequence

A technology of distribution station area and phase relationship, applied to the phase angle between voltage and current, measuring electrical variables, measuring devices, etc., can solve the problem of inaccurate phase identification of user ammeters by low-voltage carrier waves, and eliminate the inaccuracy of voltage curves Compare and avoid the effect of signal crosstalk

Inactive Publication Date: 2020-03-06
SICHUAN ZHONGDIAN AOSTAR INFORMATION TECHNOLOGIES CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to provide a method for verifying the phase relationship of household meters in distribution stations based on voltage time series, which effectively solves the problem of inaccurate phase identification of user electric meters by low-voltage carrier waves, and effectively realizes the comparison of electrical time series of multiple meters. right question

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  • Distribution area household meter phase relation inspection method based on voltage time sequence
  • Distribution area household meter phase relation inspection method based on voltage time sequence
  • Distribution area household meter phase relation inspection method based on voltage time sequence

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Embodiment 1

[0069] The present invention is realized through the following technical solutions, as figure 1 As shown, the method for verifying the phase relationship of household meters in distribution stations based on voltage time series is characterized in that: dynamic time adjustment is made to the electrical parameters corresponding to a voltage data of the general table of distribution stations and the user's electric meter, and three Phase voltage basic curve and three-phase user ammeter curve, analyze and compare the three-phase voltage basic curve and three-phase user ammeter curve, judge whether the curve vector similarity between the three-phase voltage basic curve and the three-phase user ammeter curve is greater than 90%, and compare the curves A three-phase user phase relationship matrix is ​​generated if the vector similarity is greater than 90%.

[0070] It should be noted that, through the above improvements, the instantaneous voltage fluctuation of each phase on the low...

Embodiment 2

[0072] This embodiment is further optimized on the basis of the above embodiments, such as Figure 1-Figure 3 As shown, further, in order to better realize the present invention, the following steps are specifically included:

[0073] Step S1: Obtain two corresponding time series curves on the time axis within a certain period of time;

[0074] Step S2: Perform dynamic time adjustment on the electrical parameters of all the electric meters in the distribution station area;

[0075] Step S3: Construct the three-phase voltage basic curve and the three-phase consumer electric meter curve according to the phase of the master meter;

[0076] Step S4: Analyzing and comparing the three-phase voltage basic curve and the three-phase consumer ammeter curve;

[0077] Step S5: Determine whether the similarity of the curve vectors between the three-phase voltage basic curve and the three-phase user meter curve is less than 90%; if less than 90%, return to step S4 to analyze and compare a...

Embodiment 3

[0085] This embodiment is further optimized on the basis of the above embodiments, such as figure 1 As shown, the step S1 specifically refers to:

[0086] Input the voltage data of all general meters and three-phase user meters in the distribution station area for one day, and set two corresponding time series curves on the time axis within a certain period of time:

[0087] x=[x 1 、x 2 、x 3 ,...,x n ] (1)

[0088] y=[y 1 、y 2 、y 3 ,...,y n ] (2)

[0089] Among them: x represents the time series curve of the general table;

[0090] y represents the time series curve of the three-phase user meter.

[0091] It should be noted that, through the above improvements,

[0092] The other parts of this embodiment are the same as those of the foregoing embodiments, and thus will not be repeated here.

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Abstract

The invention discloses a distribution area household meter phase relation inspection method based on a voltage time sequence. A dynamic time of an electric parameter corresponding to a piece of voltage data of a distribution area general meter and a user electricity meter is adjusted, a three-phase voltage base curve and a three-phase user electricity meter curve are constructed separately, the three-phase voltage base curve and the three-phase user electricity meter curve are analyzed and compared, whether a curve vector similarity of the three-phase voltage base curve and the three-phase user electricity meter curve is greater than 90% is determined, and a three-phase user phase relation matrix is generated when the curve vector similarity is greater than 90%. Beneficial effects of theinvention are that: the method effectively resolves a problem of inaccuracy of a user electricity meter phase recognized by a low voltage carrier, and effectively implements an issue of time sequencecomparison of multiple meters.

Description

technical field [0001] The invention relates to the technical field of checking the phase relationship of household meters, in particular to a method for checking the phase relationship of household meters in distribution station areas based on voltage time series. Background technique [0002] Explanation of terms: [0003] Dynamic time regularization: the collection concentrator in the distribution station area collects the electrical parameters of the user's electric meters through the carrier polling method; Therefore, it is necessary to regularize the voltage time series of the original multiple meters, that is, to extend and shorten the time series, and to extract the similarity of the two time series, so as to identify the voltage correlation of the meters. [0004] Distribution station area: The distribution station area refers to the power supply range or area of ​​(one) transformer. [0005] Low-voltage power line carrier: Low voltage broadband power line carrier...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R25/00
CPCG01R25/00
Inventor 唐冬来刘云杰刘荣刚欧渊张强沈磊游传强夏俊郭晶叶鸿飞李佳骏李天阳杜月吕东东孟祥亮
Owner SICHUAN ZHONGDIAN AOSTAR INFORMATION TECHNOLOGIES CO LTD
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