Study on Key Technical Schemes for Grid-connected Performance Testing of Offshore Wind Turbines

Abstract Offshore has the characteristics of not occupying land, rich in wind power resources, and has the advantages of high utilization hours of power generation and suitable for large-scale development. It has become the key direction of global wind power development. It can be predicted that offshore wind energy will become a very important part of the global energy internet in the future. After 20 years of wind power operation experience and the wind power technology improvement, the business and operation environment of offshore wind power development is becoming more and more mature. As the wind turbines installation site extends from land to offshore and deep-sea areas, “large” wind turbines have become the trend of offshore wind turbines development in the future. With the large-capacity offshore wind turbine prototype of many wind turbine manufacturers in China coming off the production line and successfully put into operation in China’s coastal areas, offshore wind turbines above 6MW began to be put into commercial operation. Therefore, it is urgent to carry out relevant tests and inspections to improve the operation and grid connection performance of the unit. It is of great significance to master the operation characteristics and control methods of offshore wind turbine, qualitatively and quantitatively analyze its impact on power grid, study offshore wind power detection methods and develop relevant detection devices. Due to the differences of offshore environment, operation control and the particularity of offshore power transmission and collection mode, the onshore wind power test and detection ability can not adapt to the new changes and requirements of offshore wind energy test and detection.