A multi-channel detection arc protection system for switchgear

Abstract

The invention discloses a multi-way detection switch cabinet electric arc light protection system. The electric arc light protection system comprises a current detection module, an air pressure detection module, an electric arc light detection module, a man-machine interaction module, an image recording module, a central processing module, a main control module, an independent power supply module,a communication module and a remote processing module. By means of the current detection module, the air pressure detection module and the electric arc light detection module, multi-angle monitoringis carried out on the switch cabinet, and the monitoring accuracy is improved; when not all the detection modules break down, a protection device is guaranteed to work continuously. When the detectionmodule breaks down, the data is automatically extracted and sent to the remote processing module, so that a maintainer can quickly obtain the needed data, and the maintenance is convenient. The remote processing module can obtain maintenance advice and judge the fault position and the proposed maintenance direction so as to improve the accuracy of the system; and meanwhile, it is ensured that thesystem can be conveniently maintained by the electric arc light.

Description

technical field [0001] The invention relates to an arc light protection system, in particular to an arc light protection system for a switch cabinet with multi-path detection. Background technique [0002] In order to protect personnel and electrical equipment in the event of an arc fault, it is necessary to install an arc protection device in the switch cabinet. There are two common and feasible methods for existing active protection: 1. Monitoring by pressure sensor; 2. Monitoring by arc sensor Monitor. [0003] The first method (using a pressure sensor as the arc light detection unit) pressure wave is one of the effects of an arc accident in the device, which will appear 10-15 milliseconds after the arc occurs, and some pressure sensors can be installed to detect pressure peaks . When the internal pressure reaches the set value, the arc monitoring device issues an action command to control the action of the switching device. But it is not easy to predetermine the overv...

AI Technical Summary

Problems solved by technology

[0005] Existing switchgear usually only uses a single sensor as a way to detect arc light, but in the process of use, there may be errors caused by sensor failure or poor sensitivity setting, and after a single sensor sends a fault, the arc light The protection device cannot work normally, which has certain potential safety hazards. At the same time, due to the difference and change of the actual working environment, the sensitivity of the sensor and the threshold for performing disconnection operations need to be adjusted according to the situation, otherwise it will easily lead to wrong disconnection operations. Therefore, it is necessary to In actual use, timely adjust the threshold for performing disconnection operations

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