Abstract
Most of power station turbine generators have been enhanced and certified for increased power operation, on average, by 10%. Continuous operation with increased power results in accelerated life utilization. So, an urgent task today is to develop new special methods for electrical equipment diagnosing using non-destructive testing and simultaneous condition monitoring, which provide a reasonable answer about the terms of reliable operation under the influence of various influences: electromagnetic, thermal and vibration. In addition, the developed methods should additionally provide information about the amount of maximum possible resource recovery during maintenance and repair. For electric machines, the main method of assessing the real technical condition at various stages of operation is the analysis of the dominant degradation mechanisms taking into account mechanical destruction from several factors such as vibration, electrical and discharge effects. However, during the actual operation of electric machines, the synergistic effect of mutual influence of vibration and electric discharge phenomena is observed, which with the existing traditional approach to control and diagnosis it is not taken into account, the technical condition is considered and normalized separately for each factor.
Keywords
spectral analysis of vibration, electric discharge phenomena, turbo-generators, dominant degradation mechanism, real technical condition, destruction, vibration energy
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