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电网技术  2015 

考虑定桨距和变桨距风机联合控制的风电场有功功率控制策略

DOI: 10.13335/j.1000-3673.pst.2015.07.020, PP. 1892-1899

Keywords: 定桨距风机,变桨距风机,风电预测,有功功率

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Abstract:

风电出力的随机性对电网运行带来不利的影响,随着大规模风电接入电网,电网公司要求风电场必须具备一定的有功功率调节能力。考虑到目前部分风电场定桨距风机和变桨距风机并存的现状,提出了一种考虑定桨距和变桨距风机联合控制的风电场有功功率控制策略。首先根据风电间接功率预测方法分析风电场可调有功功率潜力,并通过优先调整变桨距风力发电机组出力来减少定桨距风机的启停次数,且所提策略仅在变桨距机组无法满足功率调节要求时,对定桨距风机进行启停控制。提出的定桨距风机启停算法考虑选择影响较小的风电机组进行启停控制,以尽可能减小系统控制的超调量。以内蒙古某风电场实测数据进行算例分析,结果验证了所提控制策略的有效性。

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