Distributed Voltage Control with Communication Delays
Distributed Voltage Control with Communication Delays
复制标题
具有通信延迟的分布式电压控制
DOI：
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发表时间：
2019
期刊：
影响因子：
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通讯作者：
Na Li
中科院分区：
文献类型：
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作者：
S. Magnússon;Guannan Qu;Na Li
挥发性可再生能源对分配网络必需品的渗透率增加了更有效的分布（VAR）电压控制。在这些控制算法中，每个总线都会根据局部电压测量和与其他总线的通信进行调节其电压波动。最近的研究表明，公共汽车之间的通信对于解决通用电压控制问题是必要的。但是，现有文献仅提供同步电压控制算法，在大型网络中显然是不可行的。在本文中，我们设计了分布式的异步反馈电压控制算法。我们算法的主要贡献是：1）它仅需要网络中邻居之间的局部通信，2）它在每种迭代时都会强制执行硬反应性功率限制，3）它会收敛到硬电压限制，4）它会收敛到最佳的反应式功率控制，5）5）通信延误是强大的。假设电压和反应幂之间的线性关系，我们证明了算法收敛。我们使用完整的非线性AC功率流模型模拟算法。我们的模拟显示了我们的算法在具有静态和波动载荷的现实网络上的有效性，即使在存在通信延迟的情况下。
The increased penetration of volatile renewable energy into distribution networks necessities more efficient distributed (VAR) voltage control. In these control algorithms each bus regulates its voltage fluctuations based on local voltage measurements and communication to other buses. Recent studies have shown that the communication between buses is necessary to solve the general voltage control problem. However, existing literature provides only synchronous voltage control algorithms, which are clearly infeasible in large networks. In this paper, we design a distributed asynchronous feedback voltage control algorithm. The main contributions of our algorithm are: 1) it only requires local communication between neighbors in the network, 2) it enforces hard reactive power limits at every iteration, 3) it converges to hard voltage limits, 4) it converges to optimal reactive power control, 5) it is provably robust to communication delays. We prove the algorithms convergence assuming linear relationship between voltage and reactive power. We simulate the algorithm using the full nonlinear AC power flow model. Our simulations show the effectiveness of our algorithm on realistic networks with both static and fluctuating loads, even in the presence of communication delays.