Cyber Physical Grid-Interactive Distributed Energy Resources Control for VPP Dispatch and Regulation
Cyber Physical Grid-Interactive Distributed Energy Resources Control for VPP Dispatch and Regulation
复制标题
用于 VPP 调度和调节的网络物理网格交互式分布式能源控制
DOI：
10.1109/isgteurope52324.2021.9640131
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发表时间：
2021
期刊：
影响因子：
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通讯作者：
D. Gao
中科院分区：
文献类型：
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作者：
Houchao Gan;Jianhua Zhang;Jing Wang;D. Hou;Yazhou Jiang;D. Gao
在考虑通信和安全影响的前提下，提出了一种基于网络物理的电网交互分布式能源控制算法，以实现虚拟电厂调度和电网电压调节的双重特性。我们首先将DER调度问题表述为实时、迭代和网格交互的DER控制问题。然后，我们考虑了一个概率流量模型来表征通信网络中的数据包延迟和丢失，并研究了延迟如何进入协调执行该调度算法的网格测量单元、本地DER控制器和网格控制中心之间的信息交换过程。最后，提出了延迟阈值和修改消息更新规则相结合的策略，以避免通信网络流量带来的异步性，避免了该DER控制算法可能存在的数值不稳定性和跟踪调节能力的敏感性。通过在改进的IEEE 37节点系统上实施所提出的网络物理算法，我们的初步结果表明，在通用网络物理系统（CPS）中，任何DER的VPP跟踪和调节能力都必须考虑底层通信基础设施的不确定性，因为上行/双链路情况下的延迟电压测量会导致VPP调度的偏离和电压调节的抖动。
This paper presents a cyber-physical algorithm for grid-interactive Distributed Energy Resource (DER) control to enable two features of Virtual Power Plants (VPPs) dispatch and grid voltage regulation, considering the communication and security impacts. We first formulate the DER dispatch problem as a real-time, iterative, and grid-interactive DER control problem. Thereafter, we consider a probabilistic traffic model to characterize packet delays and loss in a communication network, and study how the delays enter the process of information exchange among the grid measurement units, local DER controllers and the grid control center that coordinately execute this dispatch algorithm. Finally, a strategy combining delay threshold and modified message update rules is proposed to immune the asynchrony resulting from the communications network traffic and it avoids possible numerical instabilities and sensitivities of the tracking and regulation capabilities of this DER control algorithm. By implementing the proposed cyber-physical algorithm on the modified IEEE 37-node system, our preliminary results exhibit that the uncertainties of the underlying communications infrastructure must be considered for the VPP tracking and regulation capabilities of any DER in a generic Cyber-Physical System (CPS), because the delayed voltage measurements in the uplink/bi-link cases result in the off-track in VPP dispatch and jittery in voltage regulation.