An Investigation on the Influence of Tap Changer on Frequency Response Analysis
Author(s)
Yousof, M. F. M.
Ekanayake, Chandima
Saha, Tapan
Griffith University Author(s)
Year published
2015
Metadata
Show full item recordAbstract
Tap changer in power transformer has a high failure rate thus its condition requires extra attention. In this paper, the possibility of using Frequency Response Analysis to monitor tap changer status was explored. Initial study showed that the settings in tap changer can influence the frequency response of HV and LV windings. In addition, the low frequency region of the inductive inter-winding response was used to calculate the winding turns ratio. By simulating a faulty tap changer, the frequency response was able to show clear variations especially on the short circuit test. With the findings, a flow chart was proposed, ...
View more >Tap changer in power transformer has a high failure rate thus its condition requires extra attention. In this paper, the possibility of using Frequency Response Analysis to monitor tap changer status was explored. Initial study showed that the settings in tap changer can influence the frequency response of HV and LV windings. In addition, the low frequency region of the inductive inter-winding response was used to calculate the winding turns ratio. By simulating a faulty tap changer, the frequency response was able to show clear variations especially on the short circuit test. With the findings, a flow chart was proposed, which can be served as a guideline to determine the condition of tap changer based on the changes in the response. The chart also considered other types of fault.
View less >
View more >Tap changer in power transformer has a high failure rate thus its condition requires extra attention. In this paper, the possibility of using Frequency Response Analysis to monitor tap changer status was explored. Initial study showed that the settings in tap changer can influence the frequency response of HV and LV windings. In addition, the low frequency region of the inductive inter-winding response was used to calculate the winding turns ratio. By simulating a faulty tap changer, the frequency response was able to show clear variations especially on the short circuit test. With the findings, a flow chart was proposed, which can be served as a guideline to determine the condition of tap changer based on the changes in the response. The chart also considered other types of fault.
View less >
Conference Title
Proceedings of the 2015 IEEE 11th International Conference on the Properties and Applications of Dielectric Materials (ICPADM)
Subject
Electrical and Electronic Engineering not elsewhere classified