Master–Slave-Splitting Based Distributed Global Power Flow Method for Integrated Transmission and Distribution Analysis
Master–Slave-Splitting Based Distributed Global Power Flow Method for Integrated Transmission and Distribution Analysis
复制标题
DOI：
10.1109/tsg.2014.2336810
复制
发表时间：
2015-05
影响因子：
9.6
通讯作者：
Hongbin Sun;Qinglai Guo;Boming Zhang;Ye Guo;Zhengshuo Li;Jianhui Wang
中科院分区：
文献类型：
--
作者：
Hongbin Sun;Qinglai Guo;Boming Zhang;Ye Guo;Zhengshuo Li;Jianhui Wang
近年来，随着智能电网技术的快速发展，配电网变得更加活跃，输配电网之间的相互影响也更加显著。然而，在传统的潮流计算中，输电网和配电网是分开的，这不适合这种未来的智能电网。为了实现全球统一的潮流解决方案，以支持输电网和配电网的综合分析，我们提出了一种全球潮流（GPF）的方法，认为输电网和配电网作为一个整体。我们构造GPF方程，并开发了一个主-从-分裂（MSS）迭代方法的收敛保证，以减轻输配电网之间的边界失配。在该方法中，GPF问题被分解为一个输电潮流和一些配电潮流子问题，它支持在线地理分布式计算。每个子问题可以使用不同的潮流算法来求解，以捕获输电网和配电网的不同特征。提出了一种改进基于MSS的含环配电网GPF计算收敛性的等值方法。数值仿真验证了该方法的有效性，特别是当配电网有环路或分布式发电机。
With the recent rapid development of smart grid technology, the distribution grids become more active, and the interaction between transmission and distribution grids becomes more significant. However, in traditional power flow calculations, transmission and distribution grids are separated, which is not suitable for such future smart grids. To achieve a global unified power flow solution to support an integrated analysis for both transmission and distribution grids, we propose a global power flow (GPF) method that considers transmission and distribution grids as a whole in this paper. We construct GPF equations, and develop a master-slave-splitting (MSS) iterative method with convergence guarantee to alleviate boundary mismatches between the transmission and distribution grids. In our method, the GPF problem is split into a transmission power flow and a number of distribution power flow sub-problems, which supports on-line geographically distributed computation. Each sub-problem can be solved using a different power flow algorithm to capture the different features of transmission and distribution grids. An equivalent method is proposed to improve the convergence of the MSS-based GPF calculation for distribution grids that include loops. Numerical simulations validate the effectiveness of the proposed method, in particular when the distribution grid has loops or distributed generators.