Site Measurement at ANDRITZ Hydro in Switzerland
Expertise in measurement and analysis technique – a strong combination
To enable safe operation and short outage times of a hydropower plant in a challenging modern environment, precise knowledge about the condition of the hydropower plant and the load of its components is of vital importance.
This knowledge enables the operator to act status-oriented and to reduce investment costs, and is obtained by ANDRITZ Hydro through various available measurement methods.
The following key methods are available within ANDRITZ Hydro:
Vibration Measurement
- Fingerprint measurements
- Extended machine diagnostics measurements
- Experimental mode shape analysis
Efficiency Test
- Thermodynamic efficiency test
- Index test
- Pressure time method
- Acoustic transient time
3D Geometry Measurements
- 3D Scanning
- Laser tracker
- Faro Arm
Strain Gauge Measurement
- Static strain measurements
- Dynamic strain measurements
Winding diagnosis
- Visual inspection, slot wedging check
- Polarisation- and leakage current measurement
- Dielectric loss factor and capacity measurement
- Partial discharge measurement
- DC- and AC-high voltage test
- Interturn insulation test
Thermo-diagnosis of generators
- Air-temperature distribution
- Pressure distribution in main generator areas
- End-winding temperature and Hot-Spots
- Stator Yoke-back temperatures
- Air flow and temperature distribution in the Stator cooling ducts
- Global air flow measurement
Special measurements
- Axial thrust measurement
- Foundation stiffness measurement
- Experimental modal analysis
- Natural torsion and bending frequency measurement
