飞轮储能装置在风电场功率平滑控制中的策略优化

Optimization of Power Smoothing Control Strategy for Wind Farm Based on Flywheel Energy Storage Device

摘要:

风速的不稳定性和间歇性使得风力发电机的输出功率具有随机性和波动性,大规模风电并网往往会对电力系统的稳定运行带来严重的影响;飞轮储能由于其快速的脉冲响应和高充放电率,能够有效减小风机系统接入电网时的功率波动;文章对采用永磁同步电机的飞轮储能系统在抑制风电系统有功功率波动的应用中的控制策略进行了优化设计;采用模糊推理的方法实现对有功功率平滑值的优化计算,结合永磁同步电动机(PMSM)数学模型,提出基于改进PR控制器及转子磁链定向的矢量控制策略;最后,通过Matlab/Simulink进行仿真,仿真结果显示了文中的策略具有较好的动态特性和鲁棒性。

Abstract:

The instability and intermittent of wind speed makes the output power of the wind turbine randomness and volatility. Due to its fast pulse response and high charge-discharge rate, the flywheel energy storage can effectively reduce the power fluctuations caused by the fan system when connected to the grid. This article optimized the control strategy of permanent magnet synchronous motor based flywheel energy storage system to reduce the active power fluctuations caused by the wind power system. Fuzzy inference method is used to calculate the smoothing active power value, and the improved PR controller and rotor flux oriented vector control strategy is proposed based on the mathematical model of the permanent magnet synchronous motor (PMSM).