Optimal Placement of Energy Storage in Distribution Networks
Optimal Placement of Energy Storage in Distribution Networks
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DOI：
10.1109/tsg.2017.2711921
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发表时间：
2017-06
影响因子：
9.6
通讯作者：
Yujie Tang;S. Low
中科院分区：
文献类型：
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作者：
Yujie Tang;S. Low
本文研究配电网中能量存储设备的最优配置和容量问题，以最小化总能量损耗。建立了一个连续树的线性化DistFlow模型来模拟配电网络。我们分析了当所有载荷具有相同形状时最优解的结构特性。我们证明，这是最佳的存储设备附近的叶子远离变电站的网络，和缩放的存储容量单调增加的叶子。此外，在最佳存储布置下，存储的位置边际值在部署非零存储的任何地方都是均衡的，并且从变电站向任何叶节点增加，而不是在存储部署为零的地方。我们通过模拟说明，这些结构特性是强大的，因为他们持有约当我们的一些建模假设放松。
We study the problem of optimal placement and capacity of energy storage devices in a distribution network to minimize total energy loss. A continuous tree with linearized DistFlow model is developed to model the distribution network. We analyze structural properties of the optimal solution when all loads have the same shape. We prove that it is optimal to place storage devices near the leaves of the network away from the substation, and that the scaled storage capacity monotonically increases toward the leaves. Moreover, under optimal storage placement, the locational marginal value of storage is equalized wherever nonzero storage is deployed and increases from the substation toward any leaf node over places where there is zero storage deployment. We illustrate through simulations that these structural properties are robust in that they hold approximately when some of our modeling assumptions are relaxed.