Unit commitment modeling method considering typical startup and shutdown curve

• Main Authors: ZHAO GONGDA, MI HANNING, LI XIAOCHUN, CHEN SIJIE
• Format: Patent
• Language: Chinese; English
• Published: 03.10.2023
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; PHYSICS

The invention discloses a unit commitment modeling method considering a startup and shutdown typical curve. The method comprises the following steps: S1, establishing a unit commitment optimization model considering a startup and shutdown process; s2, adding constraints considering typical curves of startup and shutdown of different types of cold and hot temperatures into the model; and S3, relaxing redundant integer variables in the model into continuous variables so as to simplify the complexity of the model. According to the method, on the basis of strict mathematical proof, redundant integer variables in the model are relaxed into continuous variables with the value ranging from 0 to 1, the compactness and solving efficiency of the model are greatly improved, and high practicability is achieved. 本发明公开了一种考虑开停机典型曲线的机组组合建模方法，包括步骤S1：建立考虑开停机过程的机组组合优化模型；步骤S2：向模型中添加考虑冷温热不同类型开停机典型曲线的约束；步骤S3：将模型中冗余的整数变量松弛为连续变量以化简模型复杂度。本方法基于严格的数学证明，将模型中冗余的整数变量松弛为取值在0到1之间的连续变量，极大地提高了模型的紧凑性与求解效率，具有较强的实用性。