Centralized Control for Parallel Operation of Distributed Generation Inverters in Microgrids
Centralized Control for Parallel Operation of Distributed Generation Inverters in Microgrids
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DOI：
10.1109/tsg.2012.2205952
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发表时间：
2012-08
影响因子：
9.6
通讯作者：
K. T. Tan;X. Peng;P. L. So;Y. Chu;Michael Z. Q. Chen
中科院分区：
文献类型：
--
作者：
K. T. Tan;X. Peng;P. L. So;Y. Chu;Michael Z. Q. Chen
本文提出了一种集中控制系统，可协调微电网内不同分布式发电（DG）逆变器的并行运行。 DG 逆变器的控制设计采用了新的模型预测控制算法，通过分别优化稳态和瞬态控制问题，可以加快大型电力系统的计算时间。微电网还实施了整体能源管理系统，以协调并网和孤岛运行期间不同DG单元之间的负载分配。通过不同测试场景下的仿真研究来评估所提出的控制系统的设计理念。还使用所提出的微电网研究了 DG 单元渗透率增加对配电网的影响。仿真结果表明，在所提出的控制系统下，可以有效协调微电网内DG机组的运行，保证整个微电网的稳定运行。
This paper presents a centralized control system that coordinates parallel operations of different distributed generation (DG) inverters within a microgrid. The control design for the DG inverters employs a new Model Predictive Control algorithm that allows faster computational time for large power systems by optimizing the steady-state and the transient control problems separately. An overall energy management system is also implemented for the microgrid to coordinate load sharing among different DG units during both grid-connected and islanded operations. The design concept of the proposed control system is evaluated through simulation studies under different test scenarios. The impact of the increased penetration of DG units on the distribution grid is also investigated using the proposed microgrid. The simulation results show that the operations of the DG units within the microgrid can be coordinated effectively under the proposed control system to ensure stable operation of the overall microgrid.