基于矩阵范型的配电网三相谐波潮流算法

配电网的传统潮流算法主要是基于前推回代法,当综合考虑谐波和三相不平衡等电能质量问题时,算法复杂度激增,难以扩展新模型,且当电源类型出现转换时算法收敛性欠佳.基于牛顿-拉夫逊法三相基波潮流和三相谐波导纳网络,提出一种综合考虑电能质量问题、适用于各种网络结构的配电网三相潮流范型算法.综合运用矩阵内积、矩阵索引、关联矩阵等矩...

Three-phase harmonic power flow algorithm of distribution network based on matrix paradigm

The traditional power flow algorithm of distribution network is mainly based on the forward and backward algorithm, the complexity of the algorithm increases sharply and it is difficult to expand new model when the harmonics and three-phase imbalance are comprehensively considered, and the convergence of the algorithm is not good enough when the type of source changes. Based on three-phase fundamental wave power flow of Newton-Raphson method and three-phase harmonic admittance matrix, a three-phase power flow paradigm algorithm of distribution network is proposed, which comprehensively considers power quality problems and is suitable for various network structures. The efficient generation and random access method of three-phase harmonic admittance matrix and three-phase fundamental wave power flow matrix of Newton-Raphson is constructed by comprehensively using matrix transformation operations such as matrix inner pro-duct, matrix index and incidence matrix. On this basis, the structure of three-phase harmonic admittance matrix is updated combining with transformer and other models, and a flexible and efficient three-phase harmonic power flow algorithm is established. OpenDSS is used to verify the accuracy and validity of the proposed algorithm in IEEE 14-bus system. The proposed algorithm and the traditional forward and backward algorithm are compared in IEEE 123-bus system, it is verified that the proposed algorithm can improve the efficiency and deal with the ring network.