基于多目标优化的风储一次调频控制策略

风储联合参与电网一次调频能够较好地利用风电和储能的优势进行调频控制,逐渐成为一种新的趋势。为了使风储在协同控制中发挥更好的作用,兼顾风能捕获效率、频率控制效果和储能循环使用寿命等重要因素,提出一种基于多目标优化的风储一次调频控制策略。通过构建风储参与一次调频的多目标优化数学模型,采用多目标粒子群算法求解最优参数组合。文章通过仿真对比所提控制策略与传统控制策略的风能捕获效率和调频效果,验证了所提控制策略的有效性和优越性。

Improving Kinetic Energy Storage for Vehicles through the Combination of Rolling Element and Active Magnetic Bearing

The demand for short term energy storage providing high power for electric and hybrid-electric vehicles is increasing drastically. Stationary FESS （flywheel energy storage systems） is established as UPS （uninterruptible power supply） and represent an emerging market. In contrast, mobile FESSs are currently only used in a few application, e.g., in motor sports. To enable a wider use in personal and public transportation the life-span of the flywheel＇s bearings needs to be increased significantly. This paper presents an alternative approach to extend the lifespan of the flywheel＇s bearings significantly by using a CREAMB （combination of rolling element and active magnetic bearings）.