基于功率-电流混合潮流约束的内点法最优潮流

提出了一种基于直角坐标下功率 — 电流混合型潮流约束的最优潮流模型。该模型对系统中的非零注入功率节点采用功率失配型潮流约束，而对零注入功率节点采用电流失配型潮流约束。这种混合模型结合了功率和电流型潮流方程的优点:对于零注入功率节点，该模型具有电流型潮流方程一阶导数为常数、二阶导数为0的特点，从而使雅可比矩阵和海森矩阵更容易计算;对于非零注入功率节点，该模型也比电流型潮流方程更好处理。该模型特别适合非线性预测 — 校正内点法的最优潮流，多个大规模算例测试证明该模型收敛性更好，计算效率更高，尤其适合求解含较多零注入功率节点的大规模电力系统最优潮流问题。

Power-current Hybrid Power Flow Model Based Optimal Power Flow by Interior Point Method

An optimal power flow (OPF) model based on rectangular power-current hybrid mismatch formulation is developed. In the proposed model,buses with power injections are formulated as power mismatch power flow constraints,while buses without power injections are formulated as current mismatch power flow constraints. The hybrid model combines the advantages of both power mismatch and current mismatch formulations. For buses without power injections,the hybrid model shares the advantages of current mismatch formul...