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Volume 6 Issue 3
May  2019

IEEE/CAA Journal of Automatica Sinica

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Bo Fan, Jiangkai Peng, Jiajun Duan, Qinmin Yang and Wenxin Liu, "Distributed Control of Multiple-Bus Microgrid With Paralleled Distributed Generators," IEEE/CAA J. Autom. Sinica, vol. 6, no. 3, pp. 676-684, May 2019. doi: 10.1109/JAS.2019.1911477
Citation: Bo Fan, Jiangkai Peng, Jiajun Duan, Qinmin Yang and Wenxin Liu, "Distributed Control of Multiple-Bus Microgrid With Paralleled Distributed Generators," IEEE/CAA J. Autom. Sinica, vol. 6, no. 3, pp. 676-684, May 2019. doi: 10.1109/JAS.2019.1911477

Distributed Control of Multiple-Bus Microgrid With Paralleled Distributed Generators

doi: 10.1109/JAS.2019.1911477
Funds:

the US Office of Naval Research N00014-16-1-312

the US Office of Naval Research N00014-18-1-2185

the National Natural Science Foundation of China 61673347

the National Natural Science Foundation of China U1609214

the National Natural Science Foundation of China 61751205

More Information
  • A microgrid is hard to control due to its reduced inertia and increased uncertainties. To overcome the challenges of microgrid control, advanced controllers need to be developed. In this paper, a distributed, two-level, communication-economic control scheme is presented for multiple-bus microgrids with each bus having multiple distributed generators (DGs) connected in parallel. The control objective of the upper level is to calculate the voltage references for one-bus subsystems. The objectives of the lower control level are to make the subsystems' bus voltages track the voltage references and to enhance load current sharing accuracy among the local DGs. Firstly, a distributed consensus-based power sharing algorithm is introduced to determine the power generations of the subsystems. Secondly, a discrete-time droop equation is used to adjust subsystem frequencies for voltage reference calculations. Finally, a Lyapunov-based decentralized control algorithm is designed for bus voltage regulation and proportional load current sharing. Extensive simulation studies with microgrid models of different levels of detail are performed to demonstrate the merits of the proposed control scheme.

     

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