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电力系统运行协同的经济调度

DOI: 10.13334/j.0258-8013.pcsee.2014.16.017, PP. 2668-2675

Keywords: 电力系统,运行协同,经济调度,频率,可再生能源发电

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Abstract:

为适应电力系统不确定性程度增强的背景,在调度中充分发挥频率调节效应的作用,从新的视角给出了电力系统运行协同的经济调度思路。依据自动发电控制技术,在不考虑电压变化影响的前提下,将协同能力的定义划分为三类,即自动的协同能力、可控的协同能力和再可控的协同能力。与此相适应,在与调度紧密结合的前提下,又给出调度所面临自动的协同状态、可控的协同状态、再可控的协同状态的三状态概念。在此基础上,提出电力系统运行协同的经济调度模型。该模型将频率纳入决策中,针对不可控源波动预期,在模型中有效计及三状态所对应的约束,并给出予以解决的优化方法。最后通过10机算例系统,验证了所提方法在不确定性情景下,增强电力系统源平衡能力的有效性。

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