Today's societies are critically dependent on the reliable supply of electricity. The reliable operation of large synchronous generators in power stations is therefore of paramount importance. Thus, power utilities are most keenly concerned in taking measures to avoid catastrophic failures and to minimise the impact of generator outages due to faults. Each generator constitutes one of the most expensive single pieces of equipment in the power station. Although they are mostly reliable and generally require minimal maintenance, faults can and do occur with varying degrees of consequences ranging from minor outages to catastrophic failures. / When faults occur, cause-effect relationships need to be identified systematically. This is necessary for having a better understanding of the fault formation mechanisms so that preventive measures can be taken, although sometimes the immediate pressures for returning a generator to service may impede a thorough investigation. / This thesis is borne of the Author's experiences in dealing with large synchronous generators of various sizes and designs. The purpose of this thesis is to report on practical problems in the operation of large synchronous generators and offer advice on remedy. It presents carefully documented cases of faults. These vary from fractured stator conductors and core overheating to cracking of rotor retaining rings and winding short circuits. Symptoms of various faults are discussed along with the extent of damage and remedial solutions. Emphasis is placed on being able to prevent the fault recurrence and prolong the mean time between failures (MTBF). / Thesis (MEngineering(Research))--University of South Australia, 2006.
| Identifer | oai:union.ndltd.org:ADTP/267285 |
| Creators | Van Tran, Tri. |
| Source Sets | Australiasian Digital Theses Program |
| Language | English |
| Detected Language | English |
| Rights | copyright under review |
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