基于下垂控制的微网并网主动同步控制策略

丁晓薇; 匡洪海; 郑丽平; 汪宝; 李圣清; DING Xiaowei; KUANG Honghai; ZHENG Liping; WANG Bao; LI Shengqing

doi:10.16513/j.cnki.10-1427/tk.2017.04.005

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分布式能源 ›› 2017, Vol. 2 ›› Issue (4) : 29-35. DOI: 10.16513/j.cnki.10-1427/tk.2017.04.005

学术研究

基于下垂控制的微网并网主动同步控制策略

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Active Synchronization Control Strategy for Microgrid Based on Droop Control

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摘要

To ensure the stability of the micro-grid with large-grid interconnection and realize isolated-net smooth switching to the grid, this paper proposes active synchronization control strategy based on droop control under the background of microgrid in peer-to-peer control system, according to the problem of the network synchronization with the grid. In this method, the power is given on the traditional droop control, and the active and reactive power of the microgrid and the decoupling between the voltage and the frequency are realized, the output voltage amplitude and phase are obtained by three-phase phase-locked loop (SPLL), which realizes the voltage synchronization of grid. The voltage phase of inverter at micro-grid interface can be obtained through the output integral by droop control, and then the PI controller is used for isochronous control, which can realize the synchronization of the amplitude, frequency and phase of the microgrid before the grid connected operation. Finally, the simulation is carried out in the Matlab/Simulink environment, whose result verifies the effectiveness and feasibility of the control strategy.

关键词

微网 / 下垂控制 / 主动同步 / 逆变器 / micro-grid / droop control / active-sync / inverter

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丁晓薇, 匡洪海, 郑丽平, 等. Active Synchronization Control Strategy for Microgrid Based on Droop Control[J]. 分布式能源. 2017, 2(4): 29-35 https://doi.org/10.16513/j.cnki.10-1427/tk.2017.04.005

[J]. Distributed Energy Resources. 2017, 2(4): 29-35 https://doi.org/10.16513/j.cnki.10-1427/tk.2017.04.005

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