Detection Technology Of The Decomposed Product Of SF₆ Gas Which Under The Arc Action

With the rapid development of the electric power industry, more and more SF₆ electrical equipments are used. The quality monitoring of SF₆ gas is more important than before. SF₆ gas in the electrical equipment is inevitable to mix other gases. Under the arc action, the impurity can easily react with the decomposed product of SF₆, and then produce poison which can corrupt electric equipment, degrade its insulation performance. If the content of impurity exceeds the norm, it will strongly influence the electrical, mechanical and on-off capability of equipment, which will result in a serious consequence.In this paper, the significant meaning of detecting the purity and the decomposed product of SF₆, which applies to the electrical equipment, is discussed; the actuality at home and abroad about detection technology of decomposed product of SF₆ gas is analyzed and the whole design of SF₆ Gas Analyze System is summarized. This thesis expounds the basic situation of the decomposed product of SF₆.The theories of the decomposition of SF₆ are selected for SF₆ Gas Analyze System with comparing and analyzing the features about existent theories. The optimal parameters of the decomposition of SF₆ were investigated by changing the reaction conditions such as gap voltage, electrode geometry, and so on. Detected and analyzed the determination of SF₆ which get from GIS by gas chromatography/ mass spectrometry (GC-MS).