漂浮式风机接入对大容量风场影响分析OA

Offshore wind power is an important direction for the development of national wind power.There is abundant wind energy in the deep sea,and the floating wind turbine in the deep sea has become the focus of the research in offshore wind power.In order to verify the operation performance of the float-ing wind turbine developed at this stage,and help the establishment of deep-far-offshore wind farm,without affecting the operation of the existing large capacity wind farms.Based on the fact that the floating wind turbine is connected to the existing large capacity wind farm project through a long submarine cable,an electromagnetic transient simulation model for the floating wind turbine connected to the wind farm is built,and the over-voltage generated by its operation conditions,fault conditions,different access loca-tions,and the length of the access submarine cable when connected to the large capacity wind farm are calculated,and its impact is analyzed.The results show that after the floating wind turbine is connected to the large capacity wind farm through a 27 km long submarine cable,the over-voltage impact of switc-hing on large capacity wind farm under different working conditions does not exceed the national standard limit;When the floating wind turbine is connected to a collecting circuit in a large capacity wind farm,the waveform and amplitude of switching overvoltage produced by different connection positions are not significantly different;The overvoltage of long submarine cable self closing no-load line connected to large capacity wind farm has a positive correlation with the length of submarine cable,but the overvoltage generated on the collector branch connected to the wind farm shows a trend of first increasing and then decreasing.The calculation contents and conclusions in this paper can provide some guidance for the sub-sequent operation test of the floating wind turbine connected to wind farms.