Title :
A study on turbine blade fatigue protection
Author :
Prabakaran, S. ; Pradeep, G.
Author_Institution :
Power Technol., Substation Autom., ABB India Dev. Centre, Bangalore, India
Abstract :
The generator´s prime mover is susceptible to abnormal frequency operation, and turbine blade fatigue is the main concern. As blade fatigue is cumulative and non-reversible, the turbine abnormal frequency protection should govern the duration of abnormal frequency operation and thus limiting the possibility of turbine damage. This turbine protection is acting as backup protection for the generator. In this paper, the need of turbine blade protection, the method of protection according to IEC standard 60034-1 and IEEE Standard C37.106 are discussed.
Keywords :
IEC standards; IEEE standards; blades; fatigue; turbogenerators; IEC standard 60034-1; IEEE standard C37.106; backup generator protection; turbine abnormal frequency protection; turbine blade fatigue protection; turbine damage; Blades; Generators; IEC standards; Resonant frequency; Stress; Time-frequency analysis; Turbines; Accumulation of time; Frequency band; Resonant Frequency; Voltage band;
Conference_Titel :
Power Systems Conference (NPSC), 2014 Eighteenth National
DOI :
10.1109/NPSC.2014.7103823
