风电高风险爬坡有限度控制

Finite Control of High Risk Wind Power Ramping

随着风电规模的不断增大,大规模高集中风力发电出力高风险爬坡事件发生的可能性不断增大,研究爬坡事件的有限度控制已越来越迫切。该文提出了基于极端天气发展过程和风机控制性能的机组状态分类方法,将爬坡过程中的风机分为六类;提出了应对大规模高集中风电爬坡的有限度控制方法框架,将有限度控制过程分为预防控制、爬坡控制和恢复控制三个阶段;给出了爬坡控制方法,结合机组状态分类以及优先级顺序对风电基地内的所有风机进行协调控制,提高风电基地出力的可控性和确定性,同时考虑预防控制对爬坡控制的改善作用。仿真结果表明,通过协调不同机组状态风机的出力,风电基地出力能够有效跟踪计划出力曲线,验证了上述方法的有效性。

With the increase of wind power penetration ratio, the probability of ramping events of large scale highly-concentrated wind power generation increases, and therefore, the research on finite control of ramping events becomes more urgent. This paper proposed a unit classification method based on extreme weather conditions and controllability of wind generators, which divides wind generators into six types; a framework of finite control method to deal with highly-concentrated wind generation ramping events, which can be classified into preventive control stage, ramping control stage and restorative control stage; especially ramping control method is introduced based on unit classification and priority, which can improve the controllability and certainty of wind power generation bases. The simulation results verify the effectiveness of the method.