论文标题
在线反馈下垂计划在分销网格中进行频率和本地电压控制
Online Feedback Droop Scheduling in Distribution Grids for Frequency and Local Voltage Control
论文作者
论文摘要
本文提出了一个新颖的框架，用于在主动分配网络（DNS）中集体控制分布式能源（DER）。所提出的方法将常用的局部（即分散）电压和频率下垂控制方案统一到转移矩阵，将频率和电压幅度测量与主动和反应性功率注入调整相关。此外，使用新颖的在线增益计划方法，通过慢速通信链接对单个DER单元的传输矩阵进行实时调整，以使传输系统的主要频率支持提供，并确保将DN电压保持在允许的限制范围内。分析了分析的下垂控制DN的全局无症状稳定性条件。通过利用基于在线的基于双重梯度的方法和合适的线性功率流模型来解决所考虑的增益调度问题。可以以插件方式将其他辅助服务提供商琐碎地纳入所提出的框架中。 37公交IEEE测试系统和逼真的瑞典533-BUS DN的数值模拟证实了该方法的有效性和可扩展性，并证明了拟议方案比最先进的方案的许多优势。
This paper presents a novel framework for collective control of Distributed Energy Resources (DERs) in active Distribution Networks (DNs). The proposed approach unifies the commonly employed local (i.e., decentralized) voltage and frequency droop control schemes into a transfer matrix relating frequency and voltage magnitude measurements to active and reactive power injection adjustments. Furthermore, the transfer matrices of individual DER units are adaptively tuned in real-time via slow communication links using a novel online gain scheduling approach to enable primary frequency support provision to the transmission system and ensure that the DN voltages are kept within the allowable limits. A global asymptomatic stability condition of the analyzed droop-controlled DN is analytically established. The considered gain scheduling problem is solved by leveraging an online primal-dual gradient-based method and a suitable linearized power flow model. Additional ancillary service providers can be trivially incorporated into the proposed framework in a plug-and-play fashion. Numerical simulations of the 37-bus IEEE test system and a realistic Swedish 533-bus DN confirm the validity and the scalability of the approach and demonstrate numerous advantages of the proposed scheme over the state-of-the-art.
