Motion Characteristics of Copper Particles in Oil Immersed Transformer Insulating Oil and its Effect on Insulation Performance
Oil-immersed transformers a key equipment in the power system, their safe and stable operation of the entire power system has an important impact. Oil-immersed transformers generate metal particles during production and transport, which can trigger insulation accidents in the transformer. In this...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Stefan cel Mare University of Suceava
2024-11-01
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| Series: | Advances in Electrical and Computer Engineering |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.4316/AECE.2024.04011 |
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| Summary: | Oil-immersed transformers a key equipment in the power system, their safe and stable operation of the entire
power system has an important impact. Oil-immersed transformers generate metal particles during production
and transport, which can trigger insulation accidents in the transformer. In this paper, the motion
distribution characteristics of copper particles in insulating oil and the influence mechanism on oil
insulation performance are studied. The observation platform of impurity motion in oil is set up and
combined with the relevant finite element simulation calculations, to carry out the influence of the
external electric field environment on the kinetic behavior of solid particles, and to combine with
the distribution characteristics of the particles to analyze the influence of their properties on the
breakdown characteristics of the insulating oil. The results show that the metal particles will be
aligned to form small bridges of metal impurities under the action of the applied electric field,
and the increase of the electric field strength will lead to a significant increase in the aggregation
of the metal particles. The formation of small bridges of impurities makes the transformer oil
conductivity further enhanced, breakdown voltage decreases with the increase of particulate concentration,
the results of this paper are of great engineering significance for the fault prevention and safety
performance enhancement of oil-immersed transformers. |
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| ISSN: | 1582-7445 1844-7600 |