Abstract
The dissolved gas analysis (DGA) is an effective method for detecting incipient faults in immersed oil power transformers. In this paper, we investigate the DGA methods and employ the ANSI/IEEE C57.104 standards (guidelines for the interpretation of gases generated in oil-immersed transformers) and IEC Basic Gas Ratio method to design a heuristic power transformer fault diagnosis tool in practice. The proposed tool is implemented by a MATLAB program and it can provide users a transformer diagnosis result. The user keys in the data of H2, CH4, C2H2, C2H4, and C2H6 gases dissolved from the immersed oil transformer’s insulating oil measured by ASTM D3612. The analyzed results will be represented in texts and figures. The real measured data of the transformer oil were taken from Taiwan Power Company substations to verify the validation and accuracy of the developed diagnosis tool.
Highlights
Immersed-oil power transformers in the power system play an important role as voltage conversion
A lot of techniques have been developed to predict diagnosis for the transformer latent failure points by the gas content, such as the Key Gas method, Duval triangle method as well as Dornenberg method, Roger method, Liner SVM diagnosis etc., this paper took the Diagnosis of IEC Basic Gas Ratio method and ANSI/IEEE Standard Rule to design a Transformer Fault Diagnosis Tool by the MATLAB program which described sections below
To ensure power supply stable quality and safety, the gases of the insulating oil was shown by Truth Table of logic, on 22nd March, 2012 Ba Dou Distribution Substation (D/S) #4Dtr to fulfill the transformer body maintenance which was found out a losing screw which is shown [6]; Especially, on May 21st, 2012 Taiwan Power Company Ba Dou D/S #4DTr’s insulating oil, inspected these gas component content Hydrogen, Methane, Ethane, Ethylene, and Acetylene data are described, this data was used the program of MATLAB, shown to obtain the result of the judgment
Summary
Immersed-oil power transformers in the power system play an important role as voltage conversion. (2014) A New Approach with Three Dimension Figure and ANSI/IEEE C57.104 Standard Rule Diagnoses Transformer’s Insulating Oil. Engineering, 6, 841-848. The insulating oil gas analysis (DGA) is a good way to diagnose the transformer fault and has been widely used by many power companies in the world. This is because that the insulating oil analysis can predict incipient faults via the analysis of the gases generated from the insulating oil. We investigate the DGA methods and employ the ANSI/IEEE C57.104 Standard Rule and IEC Basic Gas Ratio method to develop a heuristic diagnosis tool which is carried out by a MATLAB program. The user only keys in the measured data of H2, CH4, C2H6, C2H4, and C2H2 and the developed diagnosis tool can provide a diagnosis result by texts and figures
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