The generator, topic of this presentation has been uprated as part of a rewind and turbine overhaul. With uprating comes increased operating stress, increases in temperature, current forces, and excitation. To understand and quantify the effect of the increase in output on the windings and rotor a set of on line condition monitoring transducers have been strategically located in the machine.
Measurement of partial discharge in the high voltage insulation system, stator end winding vibration and movement, field winding coil insulation turn integrity and induced shaft voltage and current are the suite of extra measurements incorporated into a guard unit to actively measure the generator operating reliability at the increased duty point load. This presentation covers detail of the transducers, the reasons for their installation, locations for the measurements and the hydrogen penetration to bring the transducer connections outside the machine. Some current trends and analysis of the latest condition monitoring data will be presented.
Ron Scollay FIEAust CPEng NER APEC Engineer IntPE(Aus) FSAIEE.
Principal Engineering consultant representing Machinemonitor PTY Ltd.
Ron Scollay has extensive experience in electrical machine design, construction, testing and application gained during his working period with a major OEM and 30 years serving the large industries as a consulting engineer. Ron is currently working in Australia offering expert electrical machine consulting services to the industrial and mining sectors.
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