主动配电网最优潮流研究及其应用实例

发布时间：2019-03-07 10:55

【摘要】：最优潮流研究在配电网规划运行中不可或缺,且在大量分布式能源接入的主动配电网环境下尤为重要。传统的启发式算法在全局最优解和求解速度上均无法满足主动配电网运行要求,而基于线性化的最优潮流方法在高阻抗的配电网中适用性也较弱。基于此,文章建立了基于二阶锥规划(second order cone programming,SOCP)的动态最优潮流模型框架,力图将原非线性规划模型松弛转化为SOCP进行快速求解。首先,给出了基于二阶锥松弛的配电网动态最优潮流基本模型;然后,对主动配电网中各重要参与元素进行相应的线性化建模处理以便高效求解,如主动管理设备、配电网重构、需求响应及综合负荷等;同时,分析了松弛模型和近似等效的准确性。最后,通过3个应用实例验证了该最优潮流模型的松弛准确性和有效性。
[Abstract]:The optimal power flow research is essential in the distribution network planning and operation, and is particularly important in the active distribution network environment of a large number of distributed energy access. The traditional heuristic algorithm can not meet the operation requirement of the active power distribution network at the global optimal solution and the solution speed, and the applicability of the linearization-based optimal power flow method in the high-impedance distribution network is also weak. Based on this, the paper establishes a dynamic optimal power flow model framework based on second order cone programming (SOCP), and tries to solve the problem of the relaxation of the original nonlinear programming model to SOCP. Firstly, the basic model of dynamic optimal power flow of the distribution network based on the second-order cone relaxation is given, and then the corresponding linearization modeling processing is carried out for each important participating element in the active power distribution network so as to solve effectively, such as active management equipment, distribution network reconstruction, demand response and comprehensive load, etc.; At the same time, the accuracy of the relaxation model and the approximate equivalent is analyzed. Finally, the relaxation accuracy and validity of the optimal power flow model are verified by three application examples.
【作者单位】：四川大学电气信息学院;国网眉山供电公司;
【基金】：国家高技术研究发展计划(2014AA051901) 国家自然科学基金项目(51377111)~~
【分类号】：TM744

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