Optimal dispatch of reactive power for voltage regulation and balancing in unbalanced distribution systems
Optimal dispatch of reactive power for voltage regulation and balancing in unbalanced distribution systems
复制标题
不平衡配电系统中用于电压调节和平衡的无功功率优化调度
DOI：
10.1109/pesgm.2016.7741261
复制
发表时间：
2016
期刊：
影响因子：
--
通讯作者：
A. von Meier
中科院分区：
文献类型：
--
作者：
D. Arnold;M. Sankur;Roel Dobbe;K. Brady;Duncan S. Callaway;A. von Meier
分布式电力资产的优化是一个强大的工具，它有可能帮助公用事业公司确保客户电压在预定义的公差范围内，并改善配电系统的运行。虽然针对平衡和不平衡网络都提出了最优潮流（OPF）问题的凸松弛，但这些方法不能提供普遍的凸性保证，并且随着网络规模和约束数量的增加而无法有效地扩展。在平衡电网中，线性化潮流模型LinDistFlow模型已成功地用于快速、高精度地求解近似OPF问题。在这项工作中，提出了不平衡配电系统的LinDistFlow模型的扩展，并随后用于制定一个近似的不平衡OPF问题，该问题使用VAR资产进行电压平衡和调节。在IEEE 13节点测试馈线上的仿真结果表明，不平衡LinDistFlow模型具有电压调节和平衡系统电压的能力。
Optimization of distributed power assets is a powerful tool that has the potential to assist utility efforts to ensure customer voltages are within pre-defined tolerances and to improve distribution system operations. While convex relaxations of Optimal Power Flow (OPF) problems have been proposed for both balanced and unbalanced networks, these approaches do not provide universal convexity guarantees and scale inefficiently as network size and the number of constraints increase. In balanced networks, a linearized model of power flow, the LinDistFlow model, has been successfully employed to solve approximate OPF problems quickly and with high degrees of accuracy. In this work, an extension of the LinDistFlow model is proposed for unbalanced distribution systems, and is subsequently used to formulate an approximate unbalanced OPF problem that uses VAR assets for voltage balancing and regulation. Simulation results on the IEEE 13 node test feeder demonstrate the ability of the unbalanced LinDistFlow model to perform voltage regulation and balance system voltages.