Study on Vibration Characteristics of Transformer Windings

On the Response of Interleaved Transformer Windings to Surge Voltages

Study on transformer tank vibration characteristics in the field and its application

Vibration signal analysis method is one of effective methods to monitor the condition of transformer windings and core. In this paper, the multi-channels vibration measurement system is set up and the vibration signals on the oil-tank surface of running transformer in the field are measured. The influences of transformer type and sensor positions on the measured vibration signals are analyzed. ...

Eddy Current Losses in Transformer Windings and Circuit Wiring

Skin Effect Figure 1 shows the magnetic field (flux lines) in and around a conductor carrying dc or low frequency current I. The field is radially symmetrical, as shown, only if the return current with its associated field is at a great distance. At low frequency, the energy in the magnetic field is trivial compared to the energy loss in the resistance of the wire. Hence the current Introductio...

a study on construction of iranian life tables: the case study of modified brass logit system

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Analysis of the Voltage Stresses on Transformer Windings under Different Type of Surges

Standard high voltage lightning and switching impulse tests are performed on Extra High Voltage (EHV) transformers during manufacture to ascertain the breakdown strength of insulation used. But during their service, transformers encounter numerous voltage transients of complex and varying wave shapes which do not necessarily resemble these standard surge type voltages. This paper reports the re...