Tmv Detections Oy

Jarkko Määttä

Pauli Harila

A hydro turbine of a hydroelectric power plant operates with reduced cavitation. At least one motion sensor coupled to a rotor of the hydro turbine measures motion of the rotor during operation of the hydro turbine and generates measurement data. The measurement data and one or more operational parameters of the hydro turbine employed during the measuring are acquired. The operational parameter(s) is/are indicative of power supply of the hydro turbine. Based on the measurement data and the operational parameters, at least one metric indicative of an effect of the cavitation on the hydro turbine is computed. The at least one metric is compared with at least one threshold. Based on the comparison, a determination is made that the effect of the cavitation is too high. Based on the determining, information indicating unsuitability of the one or more operational parameters is output.

Measurement arrangement for hydro turbine

A hydro turbine of a hydroelectric power plant operates with reduced cavitation at low power levels. A using at least one motion sensor coupled to a rotor of the hydro turbine, during operation of the hydro turbine is used to generate at least one metric indicative of an effect of cavitation on the hydro turbine. The metric is used by an automated governing system to change the operation of the hydro turbine to reduce cavitation.

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Kajaani, Finland

Jarkko Määttä