On-board measurements at a 100MW high-head Francis turbine

Titzschkau, Maximilian (x) ; Hasmatuchi, Vlad (School of Engineering, HES-SO Valais-Wallis, HEI, HES-SO // University of Applied Sciences Western Switzerland) ; Decaix, Jean (School of Engineering, HES-SO Valais-Wallis, HEI, HES-SO // University of Applied Sciences Western Switzerland) ; Münch-Alligné, Cécile (School of Engineering, HES-SO Valais-Wallis, HEI, HES-SO // University of Applied Sciences Western Switzerland)

The Francis turbine runners of the four ternary groups of Grimsel 2 power plant in Switzerland showed fatigue cracks at the runner blades much earlier than expected. To find the source of these cracks, strain gauges and accelerometers were used to get information about the harmful stresses on the runner during operation. It is observed that the speed no-load operation during the start-up and the shutdown processes of the turbine impose large stresses on the runner blades.


Keywords:
Conference Type:
full paper
Faculty:
Ingénierie et Architecture
School:
HEI-VS
Institute:
Institut Systèmes industriels
Subject(s):
Ingénierie
Publisher:
Vienna, Austria, 14-16 November 2018
Date:
2018-11
Vienna, Austria
14-16 November 2018
Pagination:
12 p.
Published in:
Proceedings of 20th International Seminar on Hydropower Plants, 14 - 16 November 2018, Vienna, Austria
Appears in Collection:

Note: The status of this file is: restricted


 Record created 2019-01-15, last modified 2019-01-15

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