Linear power-flow models in multiphase distribution networks
Linear power-flow models in multiphase distribution networks
复制标题
多相配电网络中的线性潮流模型
DOI：
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
E. Dall’Anese
中科院分区：
文献类型：
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作者：
A. Bernstein;E. Dall’Anese
本文认为，多相不平衡配电系统，并开发近似的交流潮流模型，其中电压，线电流和功率在共同的耦合点是线性相关的节点净功率注入。线性化方法基于AC功率流方程的固定点解释，并且其适用于以负载和发电单元的各种连接为特征的配电系统（例如，Y形和未接地三角形，以及配电变压器次级的线对线和线对中性线）。近似线性模型可以自然地被利用来促进计算上可负担得起的优化和控制应用的开发-从用于高级分配管理系统的应用到在线和分布式优化例程。所提出的方法的近似精度进行评估不同的馈线。
This paper considers multiphase unbalanced distribution systems and develops approximate AC power-flow models wherein voltages, line currents, and powers at the point of common coupling are linearly related to the nodal net power injections. The linearization approach is grounded on a fixed-point interpretation of the AC power-flow equations, and it is applicable to distribution systems featuring a variety of connections for loads and generation units (e.g., wye and ungrounded delta, as well as line-to-line and line-to-grounded-neutral at the secondary of the distribution transformers). The approximate linear models can be naturally leveraged to facilitate the development of computationally-affordable optimization and control applications — from applications for advanced distribution management systems to online and distributed optimization routines. The approximation accuracy of the proposed method is evaluated on different feeders.