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High-frequency sensor and sensitivity detecting device and method thereof

A high-frequency sensor and detection device technology, applied in the direction of measuring devices, instruments, measuring electrical variables, etc., to achieve the effects of improving sensitivity, reducing operation and measurement errors, and simple structure and measurement methods

Inactive Publication Date: 2014-12-17
GUANGZHOU POWER SUPPLY CO LTD +1
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Based on this, it is necessary to provide a simple, accurate and low-cost high-frequency sensor and its sensitivity detection device and detection method for the problem that there is no simple, accurate and low-cost high-frequency sensor sensitivity detection method.

Method used

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  • High-frequency sensor and sensitivity detecting device and method thereof
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  • High-frequency sensor and sensitivity detecting device and method thereof

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Embodiment Construction

[0020] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below according to the drawings and embodiments. It should be understood that the specific implementations described here are only used to explain the present invention, not to limit the present invention.

[0021] like figure 1 As shown, a high-frequency sensor sensitivity detection device includes a signal source 100, a cable 200 and a partial discharge detection device 300;

[0022] One end of the cable 200 is connected to the signal source 100, the cable 200 passes through the high-frequency sensor A to be measured, the other end of the cable 200 is grounded, and the partial discharge detection device 300 is connected to the high-frequency sensor A to be measured. Sensor A connection;

[0023] The signal source 100 sends a high-frequency signal to the cable 200 according to a preset frequency, and the partial di...

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Abstract

The invention provides a high-frequency sensor and a sensitivity detecting device and method thereof. The device comprises a signal source, a cable and a local discharge detecting device. The signal source transmits a high-frequency signal to the cable according to a preset frequency, the local discharge detecting device monitors the local discharge of the cable through the to-be-detected high-frequency sensor so as to obtain the local discharge signals of the cable, the amplitude of the high-frequency signal transmitted by the signal source is adjusted repeatedly, the signal, corresponding to the lowest amplitude of the high-frequency signal, in the local discharge signals detected by the local discharge detecting device is searched, and the sensitivity of the to-be-detected high-frequency sensor is determined according to the lowest-amplitude signal. The device has the advantages that sensitivity detection of the high-frequency sensor is achieved by the device, the device is simple in structure and detecting method and simple to operate, intermediate link operation and measuring errors are reduced, high-frequency sensor sensitivity detecting precision is increased effectively, and detecting efficiency is increased effectively.

Description

technical field [0001] The invention relates to the technical field of instrument detection, in particular to a high-frequency sensor, a sensitivity detection device and a detection method thereof. Background technique [0002] Partial discharge detection is an effective means to evaluate the insulation status of power equipment. Among them, transformers, bushings, current transformers, voltage transformers, coupling capacitors, lightning arresters, cables and other power equipment need high-frequency partial discharge detection when performing partial discharge tests. High-frequency partial discharge detection technology refers to the collection, analysis and judgment of partial discharge signals with a frequency between 3MHz and 30MHz. [0003] However, the current high-frequency sensor sensitivity detection methods / means have mixed performance, and the detection methods with excellent performance have complicated detection processes and expensive detection devices, which ...

Claims

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Application Information

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IPC IPC(8): G01R35/00G01R31/12
Inventor 易满成王波苏海博王勇杨鹏顾春晖杜堉榕李刚叶建斌
Owner GUANGZHOU POWER SUPPLY CO LTD
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