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Non-contact voltage measurement method and device, computer equipment and storage medium

A voltage measurement, non-contact technology, applied in the direction of measuring devices, measuring electrical variables, measuring current/voltage, etc., can solve the problems of cumbersome process and difficult construction, and achieve the effect of low cost, simple structure and cost reduction

Active Publication Date: 2021-08-10
ELECTRIC POWER RES INST OF GUANGXI POWER GRID CO LTD +1
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AI Technical Summary

Problems solved by technology

[0005] It can be seen that the above-mentioned voltage measurement method based on the electromagnetic voltage transformer is cumbersome and difficult to construct.

Method used

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  • Non-contact voltage measurement method and device, computer equipment and storage medium
  • Non-contact voltage measurement method and device, computer equipment and storage medium
  • Non-contact voltage measurement method and device, computer equipment and storage medium

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Embodiment Construction

[0056] 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.

[0057] In the prior art, for the voltage detection of the transmission line of the power system, a contact voltage measurement method is usually used, wherein the contact voltage measurement method refers to connecting the probe of the electromagnetic transformer with the metal wire inside the transmission line, The voltage on the transmission line is then measured based on the principle of electromagnetic induction. Among them, when connecting the probe of the electromagnetic transformer to the metal wire inside the transmission line, it is necessary to first control the ...

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Abstract

The invention relates to a non-contact voltage measurement method and device, computer equipment and a storage medium, and belongs to the technical field of electric power test. According to the non-contact voltage measurement method and device, the computer equipment and the storage medium provided by the embodiments of the invention, a reference voltage signal Ur is input into an electrical loop, and the phase difference between the reference voltage signal Ur and the voltage Us of a circuit to be measured is controlled to be theta degrees and (180 degrees-theta) degrees; and then the voltage of the circuit to be measured is calculated based on the current, measured in the two states, in the electrical loop and the current measured under the condition that no reference voltage signal exists in the electrical loop (namely, a third reference voltage signal is zero), and when the device measures the voltage of the circuit to be measured, an insulating layer of the circuit to be measured does not need to be damaged; The non-contact voltage measurement method and device have the characteristics of simple structure and low cost, so that the voltage measuring cost can be reduced.

Description

technical field [0001] The present application relates to the technical field of power testing, in particular to a non-contact voltage measuring method, device, computer equipment and storage medium. Background technique [0002] Voltage measurement is widely used in power systems. The accuracy, reliability, and convenience of voltage measurement play an important role in fault detection and analysis of power systems. [0003] At present, the most commonly used voltage measurement technology is the voltage measurement technology based on electromagnetic voltage transformers. Among them, the electromagnetic transformer includes a primary winding and a secondary winding, and the process of measuring voltage includes: first, disconnecting the high-voltage wire, then connecting the primary winding of the electromagnetic transformer to the high-voltage wire, and finally, using The high-voltage wire is energized, so that the primary winding of the electromagnetic transformer gene...

Claims

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Application Information

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IPC IPC(8): G01R19/00G01R19/25
CPCG01R19/00G01R19/25
Inventor 周柯李鹏骆柏锋田兵张佳明尹旭刘仲王志明孙宏棣吕前程陈仁泽李立浧王晓明金庆忍
Owner ELECTRIC POWER RES INST OF GUANGXI POWER GRID CO LTD
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