Abstract：The overlapped chromatogram signals of the SF6 decomposed products make it difficult to calculate the products contents, when analyzing its decomposed products by gas chromatograph method. This paper recommends a method to separate the overlapped chromatogram signals with curve-fitting and Gauss function. And it gives the derivation progress of the iterative formula. Meanwhile, it provides a method to confirm the peaks position, peaks intensity and width by iterative formula to separate the overlapped signals. By the simulation of almost completely overlapped signals and partly overlapped signals and the analysis of real chromatogram data under partial discharge (PD) of electrically conductive particles (including the metal protrusions and free metal partials), it proves the validity of this method and can be used on the quantitative analysis study of the relationship between SF6 decomposed products and GIS failures.
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2010, Vol. 25 
