WU Xiaowen, ZHOU Nianguang, PENG Jiwen, et al. Field Vibration Feature and Related Factors Analysis of 110 kV Transformers[J]. High voltageapparatus, 2020, 56(1): 210-215.
WU Xiaowen, ZHOU Nianguang, PENG Jiwen, et al. Field Vibration Feature and Related Factors Analysis of 110 kV Transformers[J]. High voltageapparatus, 2020, 56(1): 210-215. DOI: 10.13296/j.1001-1609.hva.2020.01.031.
Field Vibration Feature and Related Factors Analysis of 110 kV Transformers
Transformer vibration is closely related to its operation state. In order to realize transformer operation stateevaluation based on vibration test
field test is carried out on 62 110 k V transformers. The vibration acceleration am-plitude
fundamental frequency amplitude
fundamental frequency rate
dominant frequency amplitude
dominantfrequency rate
and frequency complexity are chosen as the vibration features. Statistical analysis of the features ismade to determine the date range in which the features are distributed in normal operation condition of transformer. Inaddition
the influence of operation time on transformer vibration features is also analyzed. The result shows that formost transformers vibration acceleration amplitude
fundamental frequency amplitude
fundamental frequency rate
dominant frequency amplitude
dominant frequency rate and frequency complexity are in the range below 5.0 m/s2
1.0 m/s2
0.3
2.0 m/s2
0.9 and 3.0
respectively. The features of vibration acceleration amplitude
fundamental fre-quency amplitude and dominant frequency amplitude increase in a large degree for the transformers operating morethan 20 years. The results will be used as basic data and reference for the condition evaluation of transformers.