Guide rail type mobile switch cabinet partial discharge on-line monitoring sensor

Abstract

The invention belongs to the technical field of partial discharge online monitoring, in particular to a guide rail type mobile switch cabinet partial discharge online monitoring sensor. The structurecomprises a combined switch cabinet body and a table body, the upper end of the table body is fixedly connected with the lower end of the combined switch cabinet body; the back of the combined switchcabinet body is fixedly connected with an upper guide rail and a lower guide rail. The upper guide rail and the lower guide rail are arranged close to the edges of the upper and lower ends of the combined switch cabinet body. A detection mechanism is vertically arranged on one side of the combined switch cabinet body, the upper end and the lower end of the detection mechanism are fixedly connectedwith the opposite side walls of two first sliding blocks respectively, a monitoring mechanism is fixedly connected to the side wall of one end of the combined switch cabinet body, and the monitoringmechanism is electrically connected with the detection mechanism and a transmission mechanism. The partial discharge online monitoring sensor has the advantages that 24-hour uninterrupted partial discharge detection operation can be effectively carried out, dead angles are not easily generated in a detection area, the safety of electrical equipment can be maintained for a long time, human resources are saved, and better monitoring and recording are facilitated.

Description

technical field [0001] The invention belongs to the technical field of partial discharge on-line monitoring, in particular to a partial discharge on-line monitoring sensor of a guide rail type mobile switch cabinet. Background technique [0002] Partial discharge refers to the discharge that occurs between the electrodes but does not penetrate the electrodes. It is due to the existence of weak electricity inside the insulation of the equipment or defects caused during the production process. The phenomenon of repeated breakdown and extinguishment occurs under the action of high electric field strength. It is manifested as insulation The breakdown of internal gas, the partial breakdown of solid or liquid medium in a small range, or the concentration of field strength at the edge and sharp corners of the metal surface cause partial breakdown discharge, etc. These weak discharges will have a cumulative effect that will gradually deteriorate the dielectric properties of the insu...

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Problems solved by technology

[0002] Partial discharge refers to the discharge that occurs between the electrodes but does not penetrate the electrodes. It is due to the existence of weak electricity inside the insulation of the equipment or defects caused during the production process. The phenomenon of repeated breakdown and extinguishment occurs under the action of high electric field strength. It is manifested as insulation The breakdown of internal gas, the partial breakdown of solid or liquid medium in a small range, or the concentration of field strength at the edge and sharp corners of the metal surface cause partial breakdown discharge, etc. These weak discharges will have a cumulative effect that will gradually deteriorate the dielectric properties of the insulation and expand local defects, eventually leading to the breakdown of the entire insulation

[0003] The existing partial discharge monitoring is usually carried out by ultrasonic detection method, but at present, it mainly relies on manual periodic detection. Although this method is relatively simple and low in cost, it has a long working time and cannot carry out 24h uninterrupted detection. , when a local problem occurs, it cannot be detected in a timely and effective manner, and the electrical equipment is still in a risk gap

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