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利用储能提高风电调度入网规模的经济性评价

, PP. 45-52

Keywords: 风电调度决策,概率区间预测,储能系统,经济性评估模型

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Abstract:

受自然条件的影响,风电功率预测的精度依然较低。在大规模风电基地联网运行的场景下,直接利用风电功率预测信息进行风电调度决策,会给电力系统的安全运行带来风险。储能系统具有对功率和能量的时间迁移能力,能够有效应对风电功率预测误差,确保电网的安全运行。然而,在目前的技术经济水平下,储能系统造价昂贵,利用储能系统提高风电的调度入网规模是否可行,需要从经济性角度进行系统评估。该文提出利用储能减小风电调度风险的“源?网协调”调度方法,构建了储能系统经济性评估模型,分不同的概率区间预测场景评估了利用储能系统提高风电接纳规模的可行性,研究结果能够为利用储能系统提高风电调度入网容量提供决策依据。

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