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电网技术  2014 

利用风蓄联合削峰的电力系统经济调度

DOI: 10.13335/j.1000-3673.pst.2014.09.027, PP. 2484-2489

Keywords: 风力发电,抽水蓄能电站,削峰,经济调度

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Abstract:

风电出力具有波动性和反调峰特性,大规模风电接入电网间接拉大了负荷的峰谷差,使火电机组频繁启停,系统运行成本增大。抽水蓄能电站因其良好的储能能力以及调度的高度灵活性往往作为系统的调峰电源。将二者结合,提出了风蓄联合系统削峰的调度策略,利用抽水蓄能的储能环节将风电出力时空平移,使原本波动无序的风电成为稳定可调度的电源,具备削峰填谷的能力,平滑净负荷曲线。建模引入最大化风蓄联合出力的目标函数,不仅减少了火电出力的燃煤耗费,而且避免了弃风的遗憾,充分发挥了风蓄节能环保的优势。算例分析验证了所提模型的可行性和有效性。

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