基于序分量的孤岛交直流混联微电网三相解耦潮流算法
发布时间：2018-09-08 15:23
【摘要】：针对交直流混联微电网这类新型网络的潮流分析问题,建立了Droop型分布式电源以及AC/DC逆变器并网稳态潮流模型,并根据并网点电压对称进行三相、单相并网模型的相序分量转换。利用序电流补偿法将AC子网解耦为三序网络且并行求解,显著减小了问题求解规模;进一步建立了AC/DC逆变器两侧交流频率和直流电压耦合关系,有效解决了两子网间功率平衡问题。在序分量体系下提出了适用于直流微电网多种方式接入的孤岛交直流混联微电网三相解耦潮流算法,基于IEEE等标准配电系统的修改算例,验证了所提算法的有效性、适用性以及高计算效率。
[Abstract]:In order to solve the power flow analysis problem of a new type of network, such as AC / DC hybrid microgrid, the model of Droop distributed generation and AC/DC inverter grid-connected steady-state power flow is established, and the three-phase power flow is carried out according to the symmetry of the parallel voltage. Phase sequence component conversion of single phase grid-connected model. The sequential current compensation method is used to decouple the AC subnet into a three-sequence network and solve the problem in parallel, which significantly reduces the scale of solving the problem, and further establishes the coupling relationship between AC frequency and DC voltage on both sides of the AC/DC inverter. The problem of power balance between two subnetworks is solved effectively. In this paper, a three-phase decoupling power flow algorithm for isolated island AC / DC hybrid microgrid is proposed in the sequential component system. The validity of the proposed algorithm is verified by a modified example of standard distribution system such as IEEE. Applicability and high computational efficiency.
【作者单位】： 河海大学能源与电气学院;国网无锡供电公司;
【基金】：国家自然科学基金资助项目(51277052,51507052) 中国博士后科学基金资助项目(2015M571653) 中央高校基本科研业务费资助项目(2015B02714)~~
【分类号】：TM727;TM744
[Abstract]:In order to solve the power flow analysis problem of a new type of network, such as AC / DC hybrid microgrid, the model of Droop distributed generation and AC/DC inverter grid-connected steady-state power flow is established, and the three-phase power flow is carried out according to the symmetry of the parallel voltage. Phase sequence component conversion of single phase grid-connected model. The sequential current compensation method is used to decouple the AC subnet into a three-sequence network and solve the problem in parallel, which significantly reduces the scale of solving the problem, and further establishes the coupling relationship between AC frequency and DC voltage on both sides of the AC/DC inverter. The problem of power balance between two subnetworks is solved effectively. In this paper, a three-phase decoupling power flow algorithm for isolated island AC / DC hybrid microgrid is proposed in the sequential component system. The validity of the proposed algorithm is verified by a modified example of standard distribution system such as IEEE. Applicability and high computational efficiency.
【作者单位】： 河海大学能源与电气学院;国网无锡供电公司;
【基金】：国家自然科学基金资助项目(51277052,51507052) 中国博士后科学基金资助项目(2015M571653) 中央高校基本科研业务费资助项目(2015B02714)~~
【分类号】：TM727;TM744
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