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Method and system for identifying wire-customer relationship in low-voltage area network based on current distortion

A relationship identification and current distortion technology, applied in the direction of measuring current/voltage, measuring electrical variables, instruments, etc., can solve the problems of manual coordination, difficult to reflect the dynamic changes of the topology relationship of the power grid, and achieve high accuracy and strong anti-interference ability. Effect

Pending Publication Date: 2019-06-07
GUANGDONG POWER GRID CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method requires manual cooperation, and it is difficult to reflect the dynamic changes of the power grid topology.

Method used

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  • Method and system for identifying wire-customer relationship in low-voltage area network based on current distortion
  • Method and system for identifying wire-customer relationship in low-voltage area network based on current distortion
  • Method and system for identifying wire-customer relationship in low-voltage area network based on current distortion

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Effect test

Embodiment 1

[0058] Please refer to the attached image 3 , is a flow diagram of a current distortion-based method for identifying the relationship between line households in low-voltage station areas provided by Embodiment 1 of the present invention. This method is suitable for timely monitoring of line households in low-voltage station areas without affecting the power consumption of users. The scene of the relationship, the method is realized by the station district line household relationship identification system, the station district line household relationship recognition system is as follows Figure 4 As shown, it includes the general meter installed at the head end of each branch line (the general meter can detect the distorted current flowing through the entire branch line through CT), and several corresponding users connected to each branch line Electric energy meters (electric energy meters can generate current distortion) and concentrators communicating with all electric energ...

Embodiment 2

[0097]Please refer to the attached Figure 4 , which is a schematic structural diagram of a current distortion-based low-voltage station area line household relationship identification system provided in Embodiment 2 of the present invention. . The system includes

[0098] The main meter installed on the head end of each branch line, several electric energy meters corresponding to several users connected to each branch line, and a concentrator communicating with all electric energy meters and the main meter in the station area, the general meter A current distortion monitor is built in, the electric energy meter has a current distortion generator built in, and the method includes:

[0099] The concentrator is used to generate control instructions and send them to the electric energy meter;

[0100] The electric energy meter is used to generate a distorted current at a preset alternative time according to the control instruction;

[0101] The master meter is used to detect ...

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Abstract

The invention discloses a method and system for identifying the wire-customer relationship of a low-voltage area network based on current distortion. The method comprises the steps that a concentratorgenerates a control instruction and sends the control instruction to a electric energy meter; the electric energy meter generates the distortion current at a preset alternative time according to thecontrol instruction; a master meter detects the distortion current and judges whether the electric energy meter and the master meter are in a same branch circuit according to the generation time of the distortion current. According to the method and system for identifying the wire-customer relationship of the low-voltage area network based on the current distortion, whether the electric energy meter is on the same branch circuit with the master meter or not can be judged only by identifying the generation time of the distorted current of the electric energy meter, and power failure nor manualintervention is needed; when the wire-customer relationship changes, the wire-customer relationship can be identified in a short time, and the anti-interference capability and the accuracy are high.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of measurement and application of distribution network electrical parameters, and in particular to a method and system for identifying relationship between line households in a low-voltage station area based on current distortion. Background technique [0002] The low-voltage station area is composed of transformers, wires and user electric energy meters. There are generally multiple branch lines on the low-voltage side of the transformer. In order to calculate the line loss, it is necessary to clarify the "line household" relationship, that is, which electric energy meters are connected to each branch line. The existing low-voltage station areas use communication methods such as power line carrier and micro-power wireless to collect data, but it is difficult to identify which electric energy meters are on different branch lines in the same station area. To this end, it is necessary to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/08G01R19/165
Inventor 张思建赵闻潘峰张捷杨雨瑶
Owner GUANGDONG POWER GRID CO LTD