In the field test of tidal energy converters, the measurement of tidal current velocity is one of the key steps to evaluate the power characteristics performance of tidal energy converter. According to the requirements of tidal current velocity measurement specified by the International Electrotechnical Commission, tidal current velocity field measurement work was carried out, and the tidal current field measurement data was processed and analyzed by using the method proposed in this paper, which combines the elaborated division of tidal current velocity bine with standard deviation and correlation coefficient. The results show that: During the flood tide period, there is little difference in the mean value of tidal current velocity between the two measuring locations, but the tidal current velocity measured at the RTI location fluctuates greatly; During the ebb tide period, the mean value of tidal current velocity at the two measuring locations is quite different, and the tidal current velocity that measured at the RTI location also fluctuates greatly; The duration of the flood tide is shorter than that of the ebb tide, but the maximum value of tidal current velocity of the flood tide is greater than that of the ebb tide.
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