Dissolved Gas Analysis
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The magazine covers theory, analysis, design (computer-aided design), and practical implementation of circuits, and the application of circuit theoretic techniques to systems and to signal processing. Content is written for the spectrum of activities from basic scientific theory to industrial applications.
Research, development, design, application, construction, the installation and operation of apparatus, equipment, structures, materials, and systems for the safe, reliable, and economic delivery and control of electric energy for general industrial, commercial, public, and domestic consumption.
Samsudin, R.; Ramli, A.Q.; Berhanuddin, A.; Zaidey, Y. Energy and Environment, 2009. ICEE 2009. 3rd International Conference on, 2009
Power transformer consists of components which are under consistent thermal and electrical stresses. The major component which degrades under these stresses is the paper insulation of the power transformer. The life of the transformer is determined by the condition of the paper insulation. The degradation of the paper insulation will be accelerated with the presence of electrical fault. Electrical fault ...
Suwanasri, T.; Chaidee, E.; Adsoongnoen, C. Condition Monitoring and Diagnosis, 2008. CMD 2008. International Conference on, 2008
Due to the degradation of power transformer under its normal and abnormal operating conditions, maintenance activities are vital to restore the condition. However, the preventive maintenance costs are now of primary concern. The scattering failure data are systematically recorded and analyzed to determine the critical component of power transformer. Two transformer models of rated voltage 115/22 kV and 230/115/22 kV ...
Muhamad, N.A.; Phung, B.T.; Blackburn, T.R.; Lai, K.X. Condition Monitoring and Diagnosis, 2008. CMD 2008. International Conference on, 2008
This paper presents results of experimental tests performed on laboratory models of transformer windings immersed in bio-degradable oil. The investigations covered three common types of transformer faults: partial discharge (PD), arcing and overheating. Dissolved hydro-carbon gas products generated by these three fault types in bio-degradable oil are analyzed and compared with existing dissolved gas analysis (DGA) interpretation methods for mineral ...
Tang Wenhu; Almas, S.; Wu, Q.H. Control Conference, 2007. CCC 2007. Chinese, 2007
This paper presents a least square support vector machine (LS-SVM) approach to dissolved gas analysis (DGA) problems for power transformers. Two methods are employed to improve the diagnosis accuracy for DGA analysis. First, bootstrap preprocessing is utilised to equalise the sample numbers for different fault types. Then, the preprocessed samples are inputted to a classier for fault classification. For comparison ...
Samsudin, M.R.; Ramli, A.Q.; Berhanuddin, A.; Yang, Y.Z. Modern Electric Power Systems (MEPS), 2010 Proceedings of the International Symposium, 2010
Power transformer consists of components which are under consistent thermal and electrical stresses. The major component which degrades under these stresses is the paper insulation of the power transformer. The electrical fault can develop into thermal fault such as localized insulation burning or hot-spots. Any fault in the transformer can be detected by using Dissolved Gas Analysis technique. In this ...
This guide is intended to apply to silicone-immersed transformers in which the silicone fluid was the fluid supplied when the transformer was originally manufactured. This guide also addresses the following: a) The theory of combustible gas generation in a silicone-immersed transformer; b) Recommended procedures for sampling and analysis; c) The interpretation of Gas Analysis; d) Recommended actions based on the ...