Comparative Study on the Impurities Content of Hydrogenated Transformer Oil under Static Condition

The impurities content of domestic hydrogenated transformer oil and three kinds of naphthenic transformer oil had been determined by using the specified experimental methods. A series of experimental data had been obtained, including mechanical impurities, particulate contamination, corrosive sulfur, sulfur content, total acidity and interfacial tension. The impurities content of four kinds of transformer oil were compared with the quality indicators of transformer oil on GB/T7595-2008. The results showed that the impurities content of the former was not so satisfying although it had excellent electrical properties and the technology needed to be improved.

Download Full-text

A comparative study on the electrical properties of hydrogenated transformer oil and napthenic transformer oil

2012 IEEE International Symposium on Electrical Insulation ◽

10.1109/elinsl.2012.6251489 ◽

2012 ◽

Cited By ~ 2

Author(s):

Yihua Qian ◽

Yongpin Lin ◽

Haiyan Wu ◽

Yibin Huang ◽

Zhensheng Zhong

Keyword(s):

Electrical Properties ◽

Comparative Study ◽

Transformer Oil

Download Full-text

Influence of Baader Aging on Hydrogenated Transformer Oil

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.521.399 ◽

2014 ◽

Vol 521 ◽

pp. 399-404

Author(s):

Feng Tang ◽

Yi Hua Qian ◽

Yi Bin Huang

Keyword(s):

Chemical Composition ◽

Electrical Properties ◽

Dielectric Loss ◽

Interfacial Tension ◽

Loss Factor ◽

Chemical Properties ◽

Dielectric Loss Factor ◽

Transformer Oil ◽

Composition Variation

Under the condition of Baader aging, the chemical composition variation and the influence of transformer oil aging on electrical properties such as dielectric loss factor and physic-chemical properties such as interfacial tension were studied in the aging precess. Moreover, the correlation between hydrogenated transformer oil electrical and physic-chemical properties and its chemical composition variation were investigated.

Download Full-text

Effect of Nitrogen Doping on the Growth of 4H Polytype on the 6H-SiC Seed by PVT Method

Materials Science Forum ◽

10.4028/www.scientific.net/msf.717-720.29 ◽

2012 ◽

Vol 717-720 ◽

pp. 29-32 ◽

Cited By ~ 2

Author(s):

Emil Tymicki ◽

Krzysztof Grasza ◽

Katarzyna Racka ◽

Tadeusz Łukasiewicz ◽

Miroslaw Piersa ◽

...

Keyword(s):

Electrical Properties ◽

Nitrogen Doping ◽

Experimental Methods ◽

Structural And Electrical Properties

In this work results of nitrogen doping in the amount of 0 vol.%, 3 vol.% and 10 vol.% on the growth of the 4H polytype on the 6H-SiC seed are presented. SiC crystals grown by PVT method on the (000-1) C-face of 6H seeds using the open seed backside design have been investigated. Structural and electrical properties of the crystals were studied by different experimental methods.

Download Full-text

LOS/NLOS detection for UWB signals: A comparative study using experimental data

IEEE 5th International Symposium on Wireless Pervasive Computing 2010 ◽

10.1109/iswpc.2010.5483704 ◽

2010 ◽

Cited By ~ 16

Author(s):

Nicolo Decarli ◽

Davide Dardari ◽

Sinan Gezici ◽

Antonio Alberto D'Amico

Keyword(s):

Experimental Data ◽

Comparative Study

Download Full-text

Electrical Properties of Dislocations and Boundaries in Semiconductors

MRS Proceedings ◽

10.1557/proc-14-323 ◽

1982 ◽

Vol 14 ◽

Cited By ~ 18

Author(s):

Hans J. Queisser

Keyword(s):

Electrical Properties ◽

Imaging Techniques ◽

Experimental Methods ◽

Actual Situation ◽

Dangling Bond ◽

Semiconductor Crystals ◽

Capacitance Spectroscopy ◽

Electron Microscopes ◽

Regular Arrays ◽

Electronic Behavior

ABSTRACTSimple models have been suggested to predict electronic properties of lattice defects in semiconductor crystals: dislocations ought to act via the acceptor character of dangling bonds, and small-angle grain boundaries ought to consist of regular arrays of dislocations. The actual situation in most semiconductors is, however, much more complicated. The observed electrical effects of dislocations do not confirm the dangling-bond concept, they are affected by dissociation and reconstruction. There appear to be differences between straight and kinked dislocations. Dislocations owe much of their electronic behavior to clouds and precipitates of impurities; oxygen in silicon plays a significant role. This review summarizes the present status of experimental methods and results, including luminescence and capacitance spectroscopy as well as mapping and imaging techniques using electron-microscopes.

Download Full-text

Experimental Methodologies: Two Case Studies Investigating the Syntax- Discourse Interface

Studies in Hispanic and Lusophone Linguistics ◽

10.1515/shll-2013-1144 ◽

2013 ◽

Vol 6 (1) ◽

Cited By ~ 4

Author(s):

Timothy Gupton ◽

Tania Leal Méndez

Keyword(s):

Experimental Data ◽

Quantitative Data ◽

Native Speaker ◽

Experimental Methods ◽

Experimental Investigations ◽

Experimenter Bias ◽

Current Article ◽

Theoretical Syntax ◽

Discourse Interface ◽

L1 And L2

AbstractThe current article examines two experimental investigations of the syntaxdiscourse interface, which address theoretical questions in different ways: the first is an L1 investigation of Galician speakers in Gupton (2010) and the second is a dual investigation of L1 and L2 Spanish reported on in Leal Méndez & Slabakova (2011). These investigations gathered quantitative data via psycholinguistic tasks with accompanying audio utilizing the WebSurveyor platform. They involved counterbalanced designs and were followed by statistical analysis. While acknowledging that experimental data does not have primacy over intuitive data, the authors endorse the use of experimental methods of data elicitation (such as the ones already used in generative SLA research) in theoretical syntax in order to avoid experimenter bias and to get a more complete picture of native speaker intuition and competencies.

Download Full-text