Ad-hoc network sensing device for earth wave of switch cabinet

Abstract

The invention discloses an ad-hoc network sensing device for an earth wave of a switch cabinet. The device comprises a transient earth voltage sensor, a band-pass filter, an amplifier, a down-frequency detector, an A / D converter, an analysis control module, a storage module, a wireless transmission module and a real-time clock module; the transient earth voltage sensor is used for detecting a partial discharge signal of the earth wave and outputting the partial discharge signal to the band-pass filter; the band-pass filter, the amplifier, the down-frequency detector and the A / D converter are connected in sequence and are used for transmitting a digital signal to the analysis control module, the analysis control module is used for extracting characteristic information of the partial discharge signal and preliminarily evaluating the insulation state of the switch cabinet, the storage module is used for storing the detection data, the wireless transmission module is used for transmittingthe detection data and receiving a control instruction issued by a monitoring terminal, and the real-time clock module is used for regularly starting the wireless transmission module to send the detection data. According to the device, the insulation state of the switch cabinet is preliminarily evaluated, manpower and material resources are saved, the detection efficiency is improved, and the subjectivity of manual detection is avoided.

Description

technical field [0001] The invention relates to the technical field of detection, in particular to an ad hoc network sensing device for electric waves of switch cabinets. Background technique [0002] Partial Discharge (Partial Discharge) is a manifestation of the deterioration of the insulation performance of power equipment, and it is also the cause of further deterioration of the insulation performance. Partial discharge has a crucial impact on the reliable operation of equipment, and partial discharge detection is to reflect the above-mentioned in advance. One of the most sensitive and timely technical means of potential insulation defects. [0003] Transient earth voltage (TEV) partial discharge detection method, as a non-invasive detection method, has the advantages of high sensitivity, wide frequency band, convenient installation, and non-electrical contact for whether there is a discharge insulation fault inside the switchgear, so it is very suitable Live insulation...

AI Technical Summary

Problems solved by technology

[0005] 1. Due to the subjectivity of manual detection of partial discharge, the detection confidence is low;

[0006] 2. Detection instruments are usually operated by a single machine, and it is difficult to form a sensor network;

[0007] 3. The number of switch cabinets to be tested is large, and the detection task is large, resulting in low detection efficiency;

[0008] 4. The existing online ground wave detection equipment needs on-site wiring and networking

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