WANG Fenghua, FAN Jiahao, ZHENG Yiming, et al. Vibration Characteristic Comparison Between Vacuum Arcing On-load Tap-changer and Oil Blast On-load Tap-changer[J]. 2019, 45(9): 2834-2841.
WANG Fenghua, FAN Jiahao, ZHENG Yiming, et al. Vibration Characteristic Comparison Between Vacuum Arcing On-load Tap-changer and Oil Blast On-load Tap-changer[J]. 2019, 45(9): 2834-2841.DOI:
真空灭弧OLTC与油灭弧OLTC的振动特性对比
摘要
为提高对真空灭弧式有载分接开关(on-loadtapchanger
OLTC)运行特性的认知水平
掌握真空灭弧式OLTC切换过程中的振动特性
提高其运行可靠性
基于改进密度的含噪声空间聚类(density-based spatial clustering of applications with noise
To further improve the understanding of the operation characteristics of the vacuum on-load tap-changer(OLTC)
and master the vibration characteristics of the vacuum OLTC
an improved DBSCAN clustering algorithm is applied to compare the vibration characteristics of vacuum and oil blast OLTC in the paper. Firstly
DBSCAN is used to cluster vibration information system by setting distance threshold and points threshold. Then
the characteristic index-action points and discrete points that can reflect the signal pulse distribution to describe the vibration characteristics of OLTC are defined. The results of vibration signals of SHZV vacuum OLTC and M OLTC reveal that the improved DBSCAN algorithm is capable of describing the impulse distribution features of vibration signals of OLTC. The number of action points and the number of discrete points of the vacuum OLTC vibration signal obtained by clustering are all greater than those of the oil blast OLTC.Therefore
the vacuum OLTC vibration signal has the characteristics of multi-pulse discrete distribution. The results can provide a reference for the mechanical monitoring of vacuum OLTC based on vibration.