含平衡机约束条件的区间直流潮流模型与方法

Model and Method for Interval DC Power Flow Considering Constraints of Balancing Machine

传统区间潮流研究未考虑一些实际的物理限制,如平衡机出力约束、发电准稳态调整等,使得区间结果过于保守。为解决此问题,文中分别建立了含平衡机约束和准稳态调整约束的区间直流潮流模型,并采用优化的方法进行求解。所提出的模型能够扩展到含其他约束的区间直流潮流模型,具有一定通用性。采用9节点和IEEE 118节点系统对所建立的模型进行详细仿真分析,结果证明了方法的有效性,克服了传统无约束区间直流潮流的保守性。

The traditional interval power flow studies have ignored some actual physical constraints,such as output limit constraints of balancing machine,steady-state adjustments of generation,which therefore bring about conservative results.Interval DC power flow models with the consideration of the balancing machine constraints and steady-state adjustments are set up respectively.Furthermore,these problems are solved by optimization method.Moreover,the proposed method could be extended to other interval DC power flow problems including different constraints.Finally,the simulations of 9-bus and IEEE118-bus system verify the effectiveness of the proposed method and the conservativeness of the traditional interval DC power flow model is reduced.