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应对风电消纳中基于安全约束的价格型需求响应优化调度建模

DOI: 10.13334/j.0258-8013.pcsee.2014.31.014, PP. 5571-5578

Keywords: 需求响应,风电消纳,优化调度,价格弹性系数,安全约束,响应满意度

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Abstract:

应对风电消纳问题,价格型需求响应通过价格信号参与电网实时调度,以保持电力供需平衡。然而,风电出力和负荷的改变,使电网潮流和节点电压面临越限风险,从而网络安全约束成为制约风电消纳的关键因素。首先基于价格弹性系数分析价格型需求响应调度成本与互动响应量之间的关系。其次,描述价格型需求响应的互动响应量静态算法,并将其作为预期分配原则之一。在此基础上,同时考虑网络安全约束和价格型需求响应互动响应满意度约束,以电网侧的价格型需求响应调度成本最小化为目标,建立实时优化调度模型,保证实时调度中电网的安全运行。应用灵敏度分析方法将网络安全约束转化为负荷节点互动响应量约束,并通过内点法求解模型。最后,以某省实际电网为例分析验证建模和求解的有效性和可行性,结果表明通过价格型需求响应消纳风电的同时可将稳定断面有功功率控制在允许范围内。

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