OBSERVATIONS OF WAVE AND WAVE PRESSURE AT THE CHOSHI OFFSHORE WIND POWER STATION AND TECHNICAL PROBLEMS IN JAPAN

Abstract

 In January 2013, The Choshi Offshore Wind Power Station started generation in the Pacific Ocean as the first in Japan. This power station was built as the test plant for investigating offshore wind power technology in severe natural conditions in Japan, including performance tests for turbine, evaluations of offshore wind and environmental assessment. According to 47 months observations of wave height and period, the average wave height is relatively high and swell frequently happens. And, in the typhoon 1326 in 2013, observational maximum high wave and spilling wave hit the gravity foundation. Based on these observations, in order to increase offshore wind power stations in Japan, it is important to procure high seaworthiness vessels for construction and maintenance.