Research on analysis method of measurement uncertainty in the power performance assessment of tidal energy converters

Abstract

The analysis on the measurement uncertainty of output power in the field test of tidal energy converters is an important process to evaluate the power characteristics performance of the tested tidal energy converter. Based on the field test data of the power characteristics performance assessment of a tidal energy converter, the measurement uncertainty calculation results of output power is analyzed. The research results show that: (1) The output power curve with measurement uncertainty information of the tested tidal energy converter that drawn in this paper, can reflect the discreteness and uncertainty of the output power during the field test period; (2) The sensitivity coefficient of tidal current velocity is a component that has a significant impact on the combined uncertainty of output power of tidal energy converters; (3) The change of the output power curve slope of the tested tidal energy converter can reflect the change of the sensitivity coefficient of tidal current velocity. The research results provide a reference for the field test work of power characteristics performance assessment of tidal energy converters in the future.

Keywords

• Uncertainty
• Measurement uncertainty
• Tidal energy converter
• Power performance
• Field test