The current research on the steady - state operation of grid - connected wind farms is introduced , including the power flow calculation models for power systems which contain wind farms , the analytic methods and models for the static voltage stability of wind farms , the voltage static stability indices and measures to control the voltage stability , the factors influencing the maximum power injection of wind farms and main relevant analytic methods , indices for wind farm scale , and the capacity credit 摘要介绍了风力发电并网的稳态运行的研究现状，包括含风电场的电力系统潮流计算及模型，风电场的静态电压稳定性的分析方法与模型，电压静态稳定性指标和控制电压失稳措施，风力发电最大注入功率的影响因素及主要分析方法，衡量发电规模的指标及容量可信度等。
2 . a mathematic model of multi - object optimization about the stability allocation criteria of optical components has been set up . the linear sum - weight and probability theory are introduced to solve the mathematic model and to budget the stability of the function blocks and the optical components 2 、构建了多目标最优化的光学元件稳定性分析数学模型，以功能模块及其所含光学元件为研究对象，采用线性加权和法和概率论理论，解决了功能模块稳定性指标和光学元件稳定性指标分配问题。
