09-03-2017, 10:57 AM
A technique for the in-line detection of incipient faults in turbine generator rotor windings based on the double-signal detection method has been developed. This paper describes the development of electronic power circuits for the generation of twin signals and the detection of reflected signals. The design and manufacture of a laboratory model to test this technique is summarized together with the results of the laboratory experiments. The issues involved in the use of the developed technique for practical applications are addressed and the limitations of the technique are summarized. A method for detecting a short circuit in a synchronous machine having a rotor using a magnetic flux probe is described having the Stages of: From the flow probe during the online operation of the machine; Integrate the flow probe signal to generate a flow rate data trace that is repeated during each revolution of the rotor; Capturing the flow probe signal for a current rotor revolution for a variety of machine loading conditions and performing a short lap analysis with the captured flow signal data.
