Frequency response analysis (FRA) is a very common test for the diagnosis of power transformers. This paper presents some relevant results on the application of FRA to the diagnosis of rotating machines. First, a reference rotor position for obtaining the reference FRA response of a rotating machine is proposed. Then, FRA with the proposed rotor position is used to identify faults in the stator of the machine. This paper studies turn-to-turn and ground faults in the stator for different fault resistance values. Several laboratory tests demonstrate the applicability and value of the use of FRA in the diagnosis of rotating machines.
Keywords: Fault diagnosis, fault location, frequency response analysis, synchronous machines.
IEEE Transactions on Energy Conversion. Volume: 26 Issue: 2 Pages: 671-676
JCR Impact Factor and WoS quartile: 2.272 - Q1 (2011); 4.614 - Q1 (2018)
DOI reference: 10.1109/TEC.2011.2106214
Published on paper: June 2011.
C.A. Platero, F. Blázquez, P. Frías, D. Ramírez. Influence of rotor position in FRA response for detection of insulation failures in salient-pole synchronous machines. IEEE Transactions on Energy Conversion. vol. 26, no. 2, pp. 671-676, June 2011.