Switchgear local discharge detection system based on wireless transmission technology

A technology of partial discharge detection and wireless transmission, which is applied in the field of electric power, can solve problems such as the difficulty of correct judgment and the impact on the results of partial discharge detection and processing, and achieve the effects of safety assurance, data reduction, and avoidance of procrastination

Inactive Publication Date: 2018-10-26
ELECTRIC POWER RES INST OF GUANGXI POWER GRID CO LTD
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Problems solved by technology

These factors will affect the results of partial discharge detectio...

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  • Switchgear local discharge detection system based on wireless transmission technology

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[0030] A switchgear partial discharge detection system based on wireless transmission technology, such as figure 1 As shown, the system includes a terminal and a host, the terminal includes a sensor module, a conditioning module, a V / f conversion module 1 and a wireless transmission module connected in series in sequence, and the host includes a wireless receiving module, V / f connected in series in sequence f conversion module 2, wave detector, smoothing filter, envelope generator, peak detector, A / D converter and central processing unit, and memory, alarm, display unit and respectively connected with said central processing unit The human-computer interaction unit, the conditioning module is used to perform noise reduction and amplification processing on the signal picked up by the sensor module, and the terminal and the host are connected by wireless communication with the wireless receiving module through the wireless sending module.

[0031] The sensor module is main...

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Abstract

The invention discloses a switchgear local discharge detection system based on wireless transmission technology, comprising a terminal and a main unit. The terminal includes a sensor module, a conditioning module, V/f (voltage/frequency) conversion module 1 and a wireless transmitting module; the main unit includes a wireless receiving module, V/f conversion module 2, a wave detector, a smooth filter, an envelope line generator, a peak detector, an A/D (analog/digital) converter and a central processing unit, as well as a storage, an alarm, a display unit and a human-machine interaction unit which are connected respectively with the central processing unit. Simultaneous detection is provided for very high frequency, ultrasonic wave, high frequency current, TEV (trillion electron-volt), power frequency signal, vibration and other various signals; internal insulation state of a switchgear is subjected to comprehensive analysis of various sensing signals to allow mutual verification, andlocal discharge occurrence can be judged more accurately. Particularly, detection signals are transmitted to the main unit in wireless manner, test personnel is freed, dragging of field lines is avoided, and testing safety and reliability are improved.

Description

technical field [0001] The invention belongs to the field of electric power technology, and in particular relates to a switch cabinet partial discharge detection system based on wireless transmission technology. Background technique [0002] High-voltage switchgear is the largest number of switchgear in the power system, and it undertakes the function of directly supplying power to users, and its operating status is directly related to the reliability of user power supply. For switchgear, it is inevitable that insulation will deteriorate due to aging, moisture, mechanical damage, etc. during long-term operation. According to statistics, the number of accidents caused by the deterioration of switchgear insulation accounts for 68% of the total number of switch accidents and 74% of the total accident capacity. However, the development of condition-based maintenance and the requirements of power supply reliability make it difficult for people to carry out periodic power-off mai...

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Application Information

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IPC IPC(8): G01R31/12G08C17/02
CPCG01R31/1209G08C17/02
Inventor 邬蓉蓉朱时阳吕泽承苏毅张炜
Owner ELECTRIC POWER RES INST OF GUANGXI POWER GRID CO LTD
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