引用本文:董密,李力,粟梅,宋冬然,杨建,李正国.微电网经济运行的分布式二次电压–频率恢复控制[J].控制理论与应用,2019,36(3):461~472.[点击复制]
DONG Mi,LI Li,SU Mei,SONG Dong-ran,YANG Jian,LI Zheng-guo.Distributed secondary voltage-frequency recovery control algorithm for economic operation of microgrid[J].Control Theory and Technology,2019,36(3):461~472.[点击复制]
微电网经济运行的分布式二次电压–频率恢复控制
Distributed secondary voltage-frequency recovery control algorithm for economic operation of microgrid
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DOI编号  10.7641/CTA.2019.80426
  2019,36(3):461-472
中文关键词  分布式  电压-频率恢复  二次控制层  经济调度  运行时间尺度  无缝切换
英文关键词  distributed secondary control  voltage-frequency recovery  economic dispatch  running time scale  seamless handover
基金项目  国家自然科学基金
作者单位邮编
董密 中南大学信息科学与工程学院 410083
李力 中南大学信息科学与工程学院 
粟梅 中南大学信息科学与工程学院 
宋冬然* 中南大学信息科学与工程学院 410083
杨建 中南大学信息科学与工程学院 
李正国 深圳职业技术学院 
中文摘要
      由于传统下垂控制的特点，微电网中分布式能源的输出电压和频率易受负荷变化的影响. 为此，本文提出了分布式二次电压-频率恢复控制算法，在二次控制层实现电压-频率恢复与同步的同时，提高微电网系统运行的经济性，并减少由于运行时间尺度不一致造成的供需不匹配. 此外，本文提出的控制算法能实现孤岛模式向并网模式转变的无缝切换，能有效应对通讯故障，在极端情况下系统仍能保持稳定. 最后，本文对所提出的算法进行了稳定性证明，并利用仿真和实验验证该算法的有效性和可靠性.
英文摘要
      Because of the inherent characteristics of the traditional droop control, the output voltage and frequency of the distributed energy in the AC microgrid are easily affected by the load. To addressed this issue, in this paper, we propose a distributed secondary voltage-frequency recovery control algorithm, which are used to realize the voltage-frequency recovery and synchronization, and minimize the total generation cost in the secondary control level. Using the proposed algorithm, the economy of the system can be greatly improved, and the mismatch between the supply and the demand caused by the inconsistent running time scale is reduced. In addition, the presented algorithm successfully realizes a seamless handover from the islanded mode to the grid-connected mode, effectively deals with the communication failure, and maintain the stability of the system in extreme cases. The stability of the proposed control algorithm is analyzed and proved. Finally, simulations and experiments show the validity and the reliability of the proposed algorithm.