Research on load characteristics of Typhoon Muifa based on test

Typhoon is a common natural disaster in coastal areas of China, which is characterized by high speed and strong destructive power. For the analysis of wind turbine under typhoon condition, it is necessary to measure and survey the wind load characteristics during typhoon passing by. Based on this, a reliable automatic unmanned wind measurement system was designed, and the typhoon Muifa was measured during the whole process with the system. The test results verified the feasibility of the wind measurement system, the results showed that: (1) Under the influence of typhoon movement and Coriolis force, the horizontal angle at the measurement point changed significantly, and there was a averaged vertical angle of about 9.1°; (2) The cross-wind turbulence is more significant, the turbulence intensity was the largest, and the integral scale of the turbulent vortex was small; (3) The probability density function of fluctuating wind speed obeyed the Gaussian distribution law, and in the high frequency range above 1 Hz, the spectral density energy of typhoon was larger than that of benign wind, and appropriate correction should be made when von Karman was used for simulation. The research methods and conclusions can provide reference for typhoon simulation and safety analysis of nearshore wind farms.