DEVLOPEMENT OF THE DYNAMIC RESISTANCE MEASUREMENT (DRM) METHOD FOR CONDITION ASSESSMENT OF OLTC

Dhrupad B Purohit, Deepa Karvat

Abstract: Many failure of power transformer are due to the failure of On Load Tap Changer. If we apply some diagnosis test during the function of OLTC, some of degradation effects can be assess. This paper concentrates on OLTC diagnostic method based on the measurement of dynamic resistance. Some experiments were applied to the OLTC using DRM. With the result of these experiments, it becomes possible to assess the condition of OLTC contacts and transient resistance.

Keywords: Condition Assessment, On Load Tap Changer, Transformer Testing, Dynamic Resistance Measurement.

DOI: https://doi.org/10.15623/ijret.2014.0304111