Early-warning system and method based on abnormal gas detection in high-voltage chamber

Abstract

The invention relates to a detection and early-warning method of an early-warning system based on abnormal gas detection in high-voltage chamber. The abnormal gas detection early-warning system is composed of a micro-processor, an I/O (Input/Output) interface, a liquid crystal display screen, a keyboard, an analog-digital converter, a sampling holder, a multipath channel switching switch, a current-to-voltage converter, an HCL gas sensor, an SO2 gas sensor, a CO gas sensor and an ozone gas sensor, wherein the I/O interface, the liquid crystal display screen, the keyboard and the analog-digital converter are connected with the micro-processor, and the sampling holder, the multipath channel switching switch, the current-to-voltage converter, the HCL gas sensor, the SO2 gas sensor, the CO gas sensor and the ozone gas sensor are sequentially connected with the analog-digital converter. The control program of the early-warning method adopts two timer interruptions, a main software program used for each branch control of the program and a timer interruption 0 used for data acquisition control. The early-warning system has the advantages that multipath signals are sequentially acquired through multi-channel switching, and analog quantity signals are converted into data signals identified by a computer and are compared with a preset range; and if the signals are beyond the range, the system can give an alarm to achieve the purpose of early warning; meanwhile, a large-screen human-machine interface human-machine interface is arranged, and user operation is convenient and flexible.

Description

technical field [0001] The invention relates to the technical field of substations, in particular to an abnormal gas detection and early warning system and detection and early warning method based on a high-voltage chamber. Background technique [0002] There will be various problems during the long-term operation of the substation, one of which is the generation of a lot of odor gas ， The appearance of these odorous gases indicates that the operation of the substation is no longer normal. In the long-term production practice, it has been found that there are mainly four types of odorous gases in substations: the gases generated by burning power cables, burning insulation boards, burning animals, and arc discharge. [0003] Power cables mainly contain sulfur and chlorine. If burned, the main composition of the combustion gas is HCl; [0004] The ingredients of animal charring include hydrocarbons, sulfides, etc., mainly SO 2 ; [0005] The main composition of the combust...

AI Technical Summary

Problems solved by technology

[0002] There will be various problems during the long-term operation of the substation. One of the problems is that it will produce a lot of odorous gases. The appearance of these odorous gases indicates that the substation The operation is no longer normal

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