Turbine efficiency

Monitor turbine performance

Purpose

Monitor performance of your turbine for all production states and use the results:  

  • As an input your production planners can use to fine tune the unit’s future energy and power production. 
  • Maintenance and technical staff can monitor turbine damage / wear. 
  • As an input your hydrologists can use for quality check and strengthen models for power plant and reservoir inflow from catchment areas. 

Signals / measurements

Inputs

Quality

How​

Generator power 

1 Hz

Flash counter of the unit’s energy meter.​
Protocol (MQTT etc.)aggr

Atmospheric pressure 

Pressure turbine inlet 

20-200Hz​

Pressure sensor 4-20mA​

Pressure / level turbine outlet 

20-200Hz​

Pressure sensor 4-20mA​

Water temperature outlet 

Turbine flow – alt 1 Acoustic  

Turbine flow – alt 2 Differential pressure spiral casing (W-K) 

Position of actuator piston rod(s) for guide vanes / nozzles 

(Position of actuator piston rod runner vanes) 

Results

Results

Plot 1: Turbine efficiency 

Plot 2 (over time): Hill-chart / müssel chart for turbine 

Technical summary

The efficiency monitoring should be calibrated with a low uncertainty methodology for flow measurements. Typically, this would be a thermodynamic efficiency measurement according to IEC 60041. If no recent low uncertainty measurement (IEC 60041) has been made, FDB can provide new measurements. 

Combination with Turbin seal monitoring can be relevant to get the magnitude of a specific turbine power loss that is part of the turbine efficiency. 

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