基于钒电池?超级电容混合储能技术的永磁同步风电机组低电压穿越能力提升研究Enhancement of Low Voltage Ride Through Ability of Permanent Magnet Synchronous Wind Power Generation Sets Based on Hybrid Energy Storage System Composed of Vanadium Redox Battery and Super Capacitor
任永峰;彭伟;刘海涛;薛宇;周杰;安中全;
摘要(Abstract):
以基于双三电平变流器的2 MW直驱式永磁同步风力机组低电压穿越为研究对象,机侧变流器采用最大转矩电流比控制,对网侧变流器提出了新颖的稳态时单位功率因数控制、电网暂态故障时无功优先、有功受限协调控制策略。对全钒液流电池和超级电容进行等效电路模型分析,采用双向DC/DC变换电路作为混合储能系统和风力机组直流母线的接口,并定量模拟电网电压单相、三相深度跌落,对机组采用直流母线卸荷电路、改进控制策略以及混合储能方式实现低电压穿越进行了对比仿真。研究结果很好地说明:上述3种方案在严重的电网电压跌落情况下均可实现风电机组低电压穿越,钒电池?超级电容混合储能方式可以更好地提升机组低电压穿越能力,并加速系统有功恢复过程。
关键词(KeyWords): 混合储能;永磁同步发电机;低电压穿越;控制;风力发电
基金项目(Foundation): 国家自然科学基金项目(51367012);; 新世纪优秀人才支持计划项目(NCET-11-1018);; 内蒙古自然科学博士基金项目(2011BS0903)~~
作者(Author): 任永峰;彭伟;刘海涛;薛宇;周杰;安中全;
Email:
DOI: 10.13335/j.1000-3673.pst.2014.11.012
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