Influence of Insulating Paper and Aluminum Foil in Transformer Oil on Ultrasonic Signal Propagation in Local Discharge

Smart Grid ◽  
2021 ◽  
Vol 11 (05) ◽  
pp. 334-343
Author(s):  
世杰 韩
Keyword(s):  
Aluminum Foil ◽  
Signal Propagation ◽  
Ultrasonic Signal ◽  
Transformer Oil ◽  
Insulating Paper

Research on electric thermal aging resistance new energy material transformer oil based on steady quality engineering technology

2020 ◽  
Vol 10 (7) ◽  
pp. 1091-1096
Author(s):  
Alkhaibari Abdulmuttalib A Mohammed ◽  
Shanmi Yuan
Keyword(s):  
Transformer Oil ◽  
Energy Materials ◽  
Engineering Technology ◽  
Insulating Material ◽  
Initial Voltage ◽  
Insulating Paper ◽  
Energy Material ◽  
New Energy ◽  
Polycarbonate Film ◽  
Polyester Film

The aim of this study was to investigate the electrical resistance of polycarbonate film and polyester film materials in new energy materials during electrothermal aging in transformer oil. Insulating paper was used as a comparative material to compare the breakdown voltage and initial voltage of insulating paper, polycarbonate film, and polyester film in electrothermal aging at 90 °C, 110 °C, and 130 °C. The best performance in the test was achieved by polycarbonate film, followed by polyester film, while the worst performance was that of insulating paper. Polycarbonate film can be used as an insulating material in transformers, and it has great application value and commercial prospects.

scholarly journals Study on Dissolved Gas Due Tue Thermally Degraded Insulating Paper in Transformer Oil

2013 ◽  
Vol 11 ◽  
pp. 257-262 ◽  
Author(s):  
Susilo ◽  
Suwarno ◽  
U. Khayam ◽  
M. Tsuchie ◽  
M. Thein ◽  
...  
Keyword(s):  
Transformer Oil ◽  
Dissolved Gas ◽  
Insulating Paper

Low temperature thermal degradation of cellulosic insulating paper in air and transformer oil

2001 ◽  
Vol 50 (3) ◽  
pp. 303-308 ◽  
Author(s):  
Sandra Soares ◽  
N�gila M?P?S Ricardo ◽  
Frank Heatley ◽  
Edison Rodrigues
Keyword(s):  
Low Temperature ◽  
Thermal Degradation ◽  
Transformer Oil ◽  
Insulating Paper

Enhanced Dielectric Performance of Nano Boron Nitride Impregnated Cellulosic Insulations

2015 ◽  
Author(s):  
Jaime Taha ◽  
T. N. Narayanan ◽  
P. M. Ajayan ◽  
Jose E. Contreras ◽  
Josue Rodriguez
Keyword(s):  
Boron Nitride ◽  
High Voltage ◽  
Power Transmission ◽  
Mineral Oil ◽  
Dielectric Behavior ◽  
Transformer Oil ◽  
Insulating Paper ◽  
Dielectric Media ◽  
Dielectric Performance ◽  
Power Transmission Systems

The application of nanodielectric materials in high voltage power transmission systems has received particular attention. This investigation shows a comparison of the AC dielectric behavior of insulating paper impregnated with conventional mineral oil and dielectric nanofluids. The AC breakdown voltages of various systems were measured according to ASTM D149 to determine the effect of using nanofluids as dielectric media. The observed results indicate that addition of insulating nanoparticles to conventional transformer oil exhibits substantially higher AC breakdown voltage than that of pure mineral oil impregnated paper.

Influence of transformer oil acidity on insulating paper degradation

2013 ◽  
Author(s):  
B. Noirhomme ◽  
M.-C. Lessard ◽  
J. Jalbert ◽  
S. Besner ◽  
F. Brochu ◽  
...  
Keyword(s):  
Transformer Oil ◽  
Paper Degradation ◽  
Insulating Paper

Research on Direct Wave Separation of PD Ultrasonic Signal Based on ICA

2013 ◽  
Vol 734-737 ◽  
pp. 2819-2823 ◽  
Author(s):  
Shan Shan Hou ◽  
Qing Xie ◽  
Le Xian Shi ◽  
Wei Tao Hu
Keyword(s):  
Time Delay ◽  
Principal Component ◽  
Signal Propagation ◽  
Ultrasonic Signal ◽  
Separate Analysis ◽  
Positioning Accuracy ◽  
Direct Wave ◽  
Wave Signal ◽  
Wave Separation ◽  
Noise Characteristics

For partial discharge of transformer ultrasonic detection method exists positioning accuracy problems, the main reason mostly due to the time delay selected error is analyzed, while the main reason for time delay selected error is due to the transformer PD ultrasonic signal propagation which is extremely complex, the signals received by the ultrasonic sensor are the direct wave, non-direct wave and a mixture of all kinds of noise superimposed, so in order to improve positioning accuracy the correct separation of the direct waves time delay is important, this paper proposes a method of transformer PD direct wave ultrasonic signal separation based on independent component analysis (ICA), by a separate analysis of the direct wave signal, non-direct wave signal and noise characteristics of each principal component, the use of ICA to separate from the mixed signal to extract the direct wave signal and select the time delay, simulation and experimental results demonstrate the feasibility of the method.

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