Current sensor array used for measuring three-phase current and measuring method thereof

A current sensor, three-phase current technology, applied in the field of sensing and measurement, to achieve the effect of large measurement range, small size, and expansion of the measurable current range

Active Publication Date: 2016-10-12
成都清蓉深瞳科技有限责任公司
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  • Abstract
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  • Claims
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Problems solved by technology

The invention mainly solves the problems of expanding the measuring range of the sensor and improving the measurement accuracy of the sensor; it has excellent high-frequency characteristics, large measuring range, high precision, small volume, low cost, no intrusion, easy installation and maintenance, and extremely high use value

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  • Current sensor array used for measuring three-phase current and measuring method thereof
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  • Current sensor array used for measuring three-phase current and measuring method thereof

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Embodiment Construction

[0030] A current sensor array and measurement method for measuring three-phase current proposed by the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0031] A current sensor array for measuring three-phase current proposed by the present invention has a structure such as figure 1As shown, the device includes: a three-phase current-carrying wire 1 (comprising three phases A, B, and C), an operating platform 2, and N TMR sensor chips 3, where N is a positive integer (this embodiment adopts G1, G2, G3 , G4, G5, G6, G7, G8, G9, G10, a total of 10 TMR sensor chips, more can be used according to the actual application), signal transmission line 4, signal conditioning circuit 5, analog-to-digital conversion circuit 6 and data processing device7. The specific connection relationship is as follows:

[0032] The three-phase current-carrying wires 1 are fixed on the operating platform 2, and the wires of each ...

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Abstract

The invention relates to a current sensor array used for measuring three-phase current and a measuring method thereof, and belongs to the technical field of sensing measurement. The device comprises three-phase current carrying leads, an operating platform, N sensing chips, a signal transmission line, a signal conditioning circuit, an analog-to-digital conversion device and a data processing device. The current sensor array formed by the three-phase current carrying leads and the N sensing chips is fixed on the operating platform in measurement. The three-phase current carrying leads are equal in distance. The N sensing chips are arranged according to different distance to the three-phase current carrying leads. Each sensing chip is connected with the signal conditioning circuit through the signal transmission line. The signal conditioning circuit, the analog-to-digital conversion device and the data processing device are connected in turn. The data processing device performs numerical processing on output data so as to obtain the current values of the three-phase current carrying leads. The current sensor array used for measuring three-phase current is large in measuring range, high in precision, low in cost, easy to prepare, safe and reliable, convenient to install and maintain without invasion and suitable for mass application.

Description

technical field [0001] The invention belongs to the field of sensor measurement, in particular to a current sensor array and a measurement method for measuring three-phase currents composed of tunnel magnetoresistance (TMR) sensor chips. Background technique [0002] The development of smart grid requires the support of various technologies, among which advanced sensing and measurement technology is the basis for real-time monitoring and control of smart grid, which is of great significance to the realization of smart grid. In the current power system, the real-time monitoring of the voltage and current of the electrical equipment in the substation is relatively complete, but the monitoring of the power transmission and distribution system needs to be further improved. This is mainly due to the wide distribution of transmission lines in the power transmission and distribution system, the huge number of electrical equipment, the wide range of voltage and current levels, and t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R19/25
CPCG01R19/25
Inventor 胡军赵帅王中旭何金良王善祥
Owner 成都清蓉深瞳科技有限责任公司
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