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针对分布式电源接入配电网,使得传统的潮流算法失效的问题,提出了一种有效处理含分布式电源的弱环配电网三相潮流算法.该算法将分布式电源分别等效为PQ、PI、PQ(V)及PV节点,并建立了数学模型.在处理PV节点时,采用灵敏度阻抗矩阵对无功补偿装置进行功率修正,并且提出无功分摊原理设定更贴近实际情况的无功初值,以此提高算法的收敛性.采用序分量法对配电网三相潮流进行解耦计算,在处理环网的情况时,基于回路分析法生成道路矩阵和回路矩阵,并建立节点电压与注入电流之间的关联矩阵.通过对IEEE33配电系统分析计算,提出的方法能有效解决含不同分布式电源的弱环配电网三相潮流计算,并且具有较强的收敛性和鲁棒性.“,”To solve the invalidity of the traditional power flow calculation in distributed generation (DG) case, this paper proposes an efficient three-phase power flow calculation for weakly meshed distribution networks with DGs. The DGs are respectively equivalent to PQ, PI, PQ (V) and PV nodes, and the algorithm establishes the mathematical models for different DGs. When dealing with the PV node, it adopts the reactive power compensation device to correct the power, and the reactive power allocation theory to determine reactive initial values. In addition, the three-phase decoupled power flow model of the distribution network is established by using the sequence component method. When dealing with the weakly meshed network, the proposed approach builds the path matrix and the loop matrix based on loop-analysis and establishes the incident matrix of node voltages and the injection current. The test results in IEEE33 distribution system show that the proposed algorithm can effectively solve the problem of three-phase power flow calculation for weakly meshed distribution networks containing different kinds of DGs, and has strong convergence and robustness.