Experimental Study on Breakdown Characteristics of Transformer Oil Influenced by Bubbles
AbstractBubbles will reduce the electric strength of transformer oil, and even result in the breakdown of the insulation. This paper has studied the breakdown voltages of transformer oil and oil-impregnated pressboard under alternating current (AC) and direct current (DC) voltages. In this paper, three types of electrodes were applied: cylinder-plan electrodes, sphere-plan electrodes, and cone-plan electrodes, and the breakdown voltages were measured in both no bubbles and bubbles. The sphere-sphere electrodes were used to study the breakdown voltage of the oil-impregnated pressboard. The results showed that under the influence of bubble, the breakdown voltage of the cylinder-plan electrode dropped the most, and the breakdown voltage of the cone-plan electrode dropped the least. The bubbles motion was the key factor of the breakdown. The discharge types of the oil-impregnated pressboard were different with bubbles, and under DC, the main discharge type was flashover along the oil-impregnated pressboard, while under AC, the main discharge type was breakdown through the oil-impregnated pressboard. View Full-Text
Scifeed alert for new publicationsNever miss any articles matching your research from any publisher
- Get alerts for new papers matching your research
- Find out the new papers from selected authors
- Updated daily for 49'000+ journals and 6000+ publishers
- Define your Scifeed now
Qin, C.; He, Y.; Shi, B.; Zhao, T.; Lv, F.; Cheng, X. Experimental Study on Breakdown Characteristics of Transformer Oil Influenced by Bubbles. Energies 2018, 11, 634.
Qin C, He Y, Shi B, Zhao T, Lv F, Cheng X. Experimental Study on Breakdown Characteristics of Transformer Oil Influenced by Bubbles. Energies. 2018; 11(3):634.Chicago/Turabian Style
Qin, Chunxu; He, Yan; Shi, Bing; Zhao, Tao; Lv, Fangcheng; Cheng, Xiangrui. 2018. "Experimental Study on Breakdown Characteristics of Transformer Oil Influenced by Bubbles." Energies 11, no. 3: 634.
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.