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基于竞争博弈的风电爬坡协同控制策略

DOI: 10.13334/j.0258-8013.pcsee.2014.25.017, PP. 4341-4349

Keywords: 风电,爬坡,竞争博弈,贡献度,纳什均衡,虚拟电厂

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Abstract:

风电爬坡事件对电网的冲击较大,甚至造成停电事故,研究相应的风电有功控制策略十分必要。分析场群控制对风电控制的改善效果,提出一种基于竞争博弈的风电爬坡协同控制策略。基于风电场出力调整量、响应速度以及维持功率的能力,提出风电场贡献度指标。通过合理设置风电场贡献度指标参数,将有效调整的博弈策略构造为纳什均衡点,使得风电场能够积极、自愿参与虚拟电厂控制。所提策略在考虑机组状态分类的基础上,通过k-means算法,快速将风电场划入不同虚拟电厂;虚拟电厂根据计划出力制定调整计划,风电场通过有效调整、升出力过调整和降出力欠调整的博弈策略,实现风电场贡献度指标最大化。仿真结果表明,所提策略能够使得风电场积极响应虚拟电厂控制需求,限制风电场采取背离虚拟电厂控制需求的博弈策略,保证虚拟电厂出力能够较好跟踪计划出力指令。

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