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Non-contact double-core cable current measurement method and device

A twin-core cable, current measurement technology, used in measurement devices, voltage/current isolation, current-only measurement, etc., to achieve the effect of reducing measurement errors

Active Publication Date: 2021-12-21
CHINA SOUTHERN POWER GRID DIGITAL GRID RES INST CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Based on this, it is necessary to provide a non-contact twin-core cable current measurement method, device, Computer Equipment and Storage Media

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  • Non-contact double-core cable current measurement method and device
  • Non-contact double-core cable current measurement method and device
  • Non-contact double-core cable current measurement method and device

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Embodiment Construction

[0045] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.

[0046] The non-contact twin-core cable current measurement method provided by this application can be applied to such as figure 1 shown in the application environment. Wherein, the measuring device 104 measures the current of the twin-core cable 102 in a non-contact manner. The two conductors in the twin-core cable 102 are located in the position ring, and the current direction is opposite and perpendicular to the plane where the position ring is located. The measuring device 104 includes There are four magnetoresistive sensor chips, which are located on the position ring...

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Abstract

The invention relates to a non-contact double-core cable current measurement method and device, computer equipment and a storage medium. The method comprises the steps of determining a position circular ring of four magnetoresistive sensor chips, obtaining the radius R of the position circular ring according to the position circular ring, measuring the distance x from any one of wires to the circle center of the position circular ring and the magnetic induction measurement values of the four magnetoresistive sensor chips, obtaining the final values B1, B2, B3 and B4 of the magnetic induction measurement values according to the magnetic induction measurement values, according to the radius R of the position circular ring, the distance x from any one of the measurement wires to the circle center of the position circular ring and the final values B1, B2, B3 and B4 of the magnetic induction measurement values, obtaining the rotation angle theta 1 of the double-core wire, and obtaining the current I of the double-core cable according to the rotation angle theta 1 of the double-core wire. By adopting the method, the current sensor based on the magnetoresistive sensor chip can measure the current of the twin-core cable at any twin-core wire rotation angle.

Description

technical field [0001] The present application relates to the technical field of power system measurement, in particular to a non-contact twin-core cable current measurement method, device, computer equipment and storage medium. Background technique [0002] As the new generation of smart grid puts forward higher requirements for the perception and monitoring of electrical quantities, traditional electrical quantity measurement methods have been difficult to meet the basic needs of smart grids for comprehensive and real-time perception information. Existing data acquisition devices (such as current transformers) Due to problems such as large size, high cost, need for external power supply, limited accuracy, and inconvenient installation, universal installation and collection cannot be realized. Therefore, it is urgent to develop a low-cost, small-sized, and easy-to-install non-contact current sensor. [0003] At present, the current measurement of the power system still main...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R19/00G01R15/20
CPCG01R19/0092G01R15/205
Inventor 李鹏吕前程田兵陈仁泽王志明徐振恒谭则杰
Owner CHINA SOUTHERN POWER GRID DIGITAL GRID RES INST CO LTD
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