HOU Feng, FENG Yang, FANG Tiancheng, et al. Simulation and verification for wearing and ablated contacts of oil-immersed on-load tap changers[J]. Ningxia Electric Power, 2024, (2).
DOI:
HOU Feng, FENG Yang, FANG Tiancheng, et al. Simulation and verification for wearing and ablated contacts of oil-immersed on-load tap changers[J]. Ningxia Electric Power, 2024, (2).DOI: 10.3969/j.issn.1672-3643.2024.02.011.
Simulation and verification for wearing and ablated contacts of oil-immersed on-load tap changers
The on-load tap changer(OLTC)is a critical device for regulating the output voltage of transformers
and it is also one of the most failure-prone components within it.Currently
the core-lifting detection method traditionally used for OLTC fault diagnosis is costly
time-consuming
and inflexible.This article introduces a simulation method for static contact defects in M-type oil-immersed composite OLTCs
exemplified by contact wear and erosion.The feasibility of this simulation method is verified through dynamic resistance waveform testing on actual OLTCs.This method is practical and has typical time-domain characteristics of dynamic resistance waveforms associated with specific defects
thus offering a valuable direction for the maintenance of OLTCs.