About Generator inter-turn blades
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About Generator inter-turn blades video introduction
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6 FAQs about [Generator inter-turn blades]
What are inter turn faults in a hydro generator rotor winding?
Inter turn faults in a hydro generator rotor winding lead to rotor earth faults, local overheating and imbalanced pull. All together, results in rotor vibration as mentioned in , . On-line detection of these faults first described in 1971 , .
How to detect rotor winding Inter-turn circuit faults of synchronous generators?
(iv) The online detection method for the rotor winding inter-turn circuit faults of synchronous generators by means of the through screw is simple and convenient, facilitates implementation and does not interfere with the normal operation of generators.
What are generator rotor faults?
Generator rotor faults mainly include rotor winding faults and rotor body faults. The main reason for rotor winding failure is due to the grounding and inter-turn short circuit caused by insulation wear.
What happens if a turn-to-turn fault occurs in a generator?
In the case of normal operation, the currents in the different branches of the same phase should be identical. On the other hand, if a turn-to-turn fault happens then the protection will defect a differential current between the windings and it will trip the generator . Fig 2. Generator differential turn-to-turn protection (Split phase).
What are the main manifestations of generator stator faults?
The main manifestations of generator stator faults are overheating of stator windings, insulation damage, and grounding. There are four main types of stator winding faults, which are phase-to-phase short circuits, inter-turn short circuits, single-phase grounding, and three-phase grounding.
How to diagnose turbo generator rotor winding Inter-turn short circuit?
The fault of the turbo generator rotor winding inter-turn short circuit can be diagnosed according to the symmetry of the induced voltage waveform and the characteristic harmonic content. The method is applicable to static excitation turbo generators and rotating excitation turbo generators.