电力系统保护与控制Issue(2)：40-47,8.
随机载荷激励下的风力发电机组首次穿越模型
First-passage model under the excitation of stochastic load of the wind turbine
摘要
Abstract
With wind turbine system developing larger and lighter, the dimensions of time-varying complexity gradually increase. Meanwhile, the wind turbine loads suffer randomness, which results in stronger prolonged vibration. And then the stability of wind turbine system is seriously damaged. By integrating wind turbine model, deterministic load model and the impact of stochastic load, this paper establishes first-passage model with stochastic load. And combined with the electrical dynamic model of wind turbine, a unified electromechanical dynamic model is built up. By using stochastic averaging method of quasi-non-integrable- Hamiltonian systems, it sets up relevant Hamilton function and the stochastic model of one-dimensional Itˆo diffusion process, which will lay a good foundation for following stability and reliability study. With an example of a domestic unit of 750 kW wind turbine, the corresponding unified electromechanical dynamic model is established. And the first-passage phenomenon is verified by a simulation in MATLAB. Simulation results show that the model has good applicability and operability.关键词
风力发电/随机载荷/首次穿越/随机平均法Key words
wind turbine system/stochastic load/first-passage/stochastic averaging method分类
信息技术与安全科学引用本文复制引用
苏柏松,解大,娄宇成,杨敏霞,王西田,张延迟..随机载荷激励下的风力发电机组首次穿越模型[J].电力系统保护与控制,2015,(2):40-47,8.基金项目
国家自然科学基金(51277119)；上海市教委项目(10YZ217)This work is supported by National Natural Science Foundation of China (No.51277119) （51277119）
