The influence of transformer oil gas chromatograph is mainly divided into human factors and the accuracy of the instrument itself. The analysis and calculation of the most samples of personnel operation have an impact. The “external standard two-needle injection method†can correct the experimental data, from personnel factors and instruments. How does the accuracy consideration affect the experimental accuracy of the transformer oil spectrometer?
The human factors affecting the chromatographic test of transformer oil, in order to reduce the error caused by the operation, for the personnel engaged in chromatographic test work, some requirements are specified in the relevant literature, generally summarized as follows:
(1) Properly collect, analyze, and calculate samples.
(2) Conduct a comprehensive analysis based on the measurement results to make a correct judgment on equipment failure.
(3) For the nature of equipment failures, remove the opinions of strengthening monitoring and processing.
First, personnel requirements
(1) Familiar with the basic knowledge and basic operations of gas chromatography, and skilled in the analysis of dissolved gases in oil.
(2) Understand the working principle, internal structure, operating conditions of oil-filled electrical equipment and the characteristics of gas-producing faults.
(3) Understand how to comprehensively judge the internal fault of the equipment based on the measurement results of the dissolved gas analysis in the oil.
Second, the accuracy of the instrument
In the international arena, the requirements related to gas chromatographs have been proposed very early, and China has also officially put forward detailed requirements in the 2000 power standards.
(1) The resolution of the column to the detected components should meet the quantitative analysis requirements.
(2) The instrument baseline is stable and has sufficient sensitivity.
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Tags: Factors Affecting the Accuracy of Transformer Oil Analysis Gas Chromatographs
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