为研究伺服系统对10 MW单桩式近海风力机地震动力特性的影响，以DTU 10 MW风力机为原型，建立考虑伺服系统的单桩式近海风力机模型，通过p-y曲线法构建分布式弹簧土-构耦合模型，并基于中国实测地震数据和风力机实际运行环境构建湍流风-波浪-地震伺服系统多物理场计算平台，研究其在不同状态下的动力特性。结果表明：无地震载荷作用时，当平均风速大于额定风速，风力机变桨伺服系统有效缓解了塔顶振动，并减弱了气动载荷对塔基弯矩的影响；地震载荷使风力机塔顶位移明显增加，平均增加71.66%，变桨伺服系统对塔顶位移的作用效果被削弱，使发电机转速发生更剧烈波动；地震及波浪载荷对塔基弯矩的影响很大，风浪震作用较仅湍流风载荷作用下风力机塔基弯矩最大值平均增加131.24%，不能忽略波浪载荷对塔基弯矩的影响。

In order to research the effect of servo system on the seismic dynamic characteristics of 10 MW monopile offshore wind turbine,a model of monopile offshore wind turbine considering servo system was established with DTU 10 MW wind turbine as a prototype,a distributed spring soilstructure interaction model was constructed by p-y curve method,and a turbulent windwaveearthquake multiphysical field calculation platform was built based on measured seismic data and actual operating environment of wind turbine in China,which dynamic characteristics in different states were studied. The results show that the wind turbine variable pitch servo system effectively mitigates the vibration at the top of the tower when the average wind speed is greater than the rated wind speed without the effect of seismic load,and attenuates the effect of aerodynamic load on the bending moment at the base of tower; the seismic load increases the wind turbine tower top displacement significantly by 71.66% on average,and the effect of variable pitch servo system on tower top displacement is weakened,leading to more serious fluctuation of the generator speed; the seismic and wave loads have a great effect on the tower base bending moment,compared to only turbulent wind loads,under the action of wind,wave and earthquake,maximum wind turbine tower base bending moment increases by 131.24% on average,so the effect of wave loads on the tower base bending moment cannot be ignored.

TK83

华北电力科学研究院有限责任公司科技项目（KJZ2022014）