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Method and apparatus for detecting a shunt between power input and output of a power consumption meter

A technology of power input and detection method, which is applied in the shunt between power input and output, and in the field of public power grids, and can solve problems such as inaccuracy, positioning, and complexity

Active Publication Date: 2017-03-29
SCHNEIDER ELECTRIC IND SAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The result is able to detect cheating by assembly shunting, but not localize the cheating on the power grid
Furthermore, this scheme is still complex and imprecise due to the need to estimate the loss on the line

Method used

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  • Method and apparatus for detecting a shunt between power input and output of a power consumption meter
  • Method and apparatus for detecting a shunt between power input and output of a power consumption meter
  • Method and apparatus for detecting a shunt between power input and output of a power consumption meter

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Embodiment Construction

[0044] The invention will be described when applied to a power distribution network, e.g. from MV / LV (medium voltage / low voltage) distribution substations to low voltage users (approximately 100 in number) - especially living rooms - of the low voltage LV type . A MV / LV substation represents several feeders (approximately 4 to 10 in number) between which power is distributed at the substation level. Each feeder mainly consists of three phases P1 , P2 and P3 and a neutral N, arranged in a radial structure representing several single-phase or three-phase connections for connecting each customer to the feeder.

[0045] In order to detect the consumption of low-voltage consumers, single-phase or three-phase connections are usually equipped with flexible or intelligent consumption meters. figure 2 and image 3 First and second embodiments of the electricity consumption meter 10 are shown.

[0046] In the case of a single-phase connection, each consumption meter consists of one ...

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Abstract

The method involves generating a signal and modifying the signal by a conversion component at an electricity consumption meter (10) between a power input (12) and a power output (14) of the meter. Another signal is analyzed between the component and the power output. Presence or absence of a shunt (15) between the power input and the power output of the meter is deduced. Intensities of currents circulating in power conductors between the input and the output are determined, where individual values of current and / or a vectorial sum of the currents and / or a differential value are determined. Independent claims are also included for the following: (1) a method for locating fraud by derivation of an electricity consumption reading meter placed on an electricity distribution network (2) a device for detecting shunt between power input and power output of an electricity consumption meter.

Description

technical field [0001] The invention relates to the field of electric power distribution on a power network, especially a low-voltage public power network. [0002] More precisely, the invention relates to a method and a device for detecting a shunt between the power input and output of a consumption meter located on the power network. The invention also relates to a method for locating fraudulent activities on an electrical distribution network by shunting consumption reading meters arranged on the electrical network. Background technique [0003] Such as figure 1 As shown, on the power grid 1, from the MV / LV (medium voltage / low voltage) distribution substation 2 to the low voltage users 5 (about 100 in number)—especially the living room—executed at low voltage (LV) Electrical terminal distribution. MV / LV substations 2 send out several feeders 3 (about 4 to 10 in number). Each feeder is deployed in a radial structure 4 presenting a plurality of single-phase or three-pha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R11/24
CPCG01R22/066
Inventor M·克莱门斯E·康帝尼O·库特劳F·沃特洛特C·拉萨尔
Owner SCHNEIDER ELECTRIC IND SAS