D8.3 - Experience with Special Fiber Optic Sensors for Online Monitoring of High Voltage Stator Windings at Large Turbine Generators - Long Term Reliability and Machine Operation Diagnosis -

S. Strack, J. R. Weidner, T. Bosselmann, M. Villnow & M. Willsch
The increasing quantity of renewable energy in electric power generation leads to a higher flexibility in the operation of conventional power plants. Especially the turbo generator having the highest energy density has to face the influence of frequent start-stop-operation on thermal movement and vibration of the stator end windings. Large indirect cooled turbo generators have been equipped with newly designed FBG strain and temperature sensors to monitor the influence of peak load operation on transient...