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Enhanced Two-Stage Hierarchical Control for a Dual Mode WECS-Based Microgrid

Author

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  • Rasool M. Imran

    (State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China)

  • Shaorong Wang

    (State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China)

Abstract

Along with the great benefits of utilizing renewable energy (e.g., wind energy) in the power system, there are also some issues, such as increasing the uncertainty and reducing the system inertia. Communication-based centralized control has started to play a significant role in reacting to the aforementioned issues, especially for relatively small systems, such as microgrids. In this context, in this paper, an enhanced communication-based hierarchical control for a dual mode wind energy conversion system-based microgrid is modeled and investigated. The primary stage utilized the P-V/Q-f droop method, which is the preferred droop method to be used in microgrids when the line impedance is mainly resistive. The secondary stage relied on an enhanced methodology for compensating the deviations of voltage and frequency and improving the performance of the microgrid during small and large signal disturbances. Moreover, as this microgrid operates in a dual mode, the mode transition cases from grid-tied mode to autonomous mode and vice versa have been addressed. Thereafter, an improved control scheme for the unplanned outage transition and a modified control scheme for the pre-synchronization and reconnection transition were proposed. Finally, the proposed work was evaluated by the simulation results in MATLAB environment.

Suggested Citation

  • Rasool M. Imran & Shaorong Wang, 2018. "Enhanced Two-Stage Hierarchical Control for a Dual Mode WECS-Based Microgrid," Energies, MDPI, vol. 11(5), pages 1-19, May.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:5:p:1270-:d:146688
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    References listed on IDEAS

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    1. Tengfei Zhang & Dong Yue & Michael J. O’Grady & Gregory M. P. O’Hare, 2015. "Transient Oscillations Analysis and Modified Control Strategy for Seamless Mode Transfer in Micro-Grids: A Wind-PV-ES Hybrid System Case Study," Energies, MDPI, vol. 8(12), pages 1-20, December.
    2. Gang Yao & Zhichong Lu & Yide Wang & Mohamed Benbouzid & Luc Moreau, 2017. "A Virtual Synchronous Generator Based Hierarchical Control Scheme of Distributed Generation Systems," Energies, MDPI, vol. 10(12), pages 1-23, December.
    3. Savaghebi, Mehdi & Vasquez, Juan C. & Jalilian, Alireza & Guerrero, Josep M. & Lee, Tzung-Lin, 2013. "Selective compensation of voltage harmonics in grid-connected microgrids," Mathematics and Computers in Simulation (MATCOM), Elsevier, vol. 91(C), pages 211-228.
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    Cited by:

    1. Umar Salman & Khalid Khan & Fahad Alismail & Muhammad Khalid, 2021. "Techno-Economic Assessment and Operational Planning of Wind-Battery Distributed Renewable Generation System," Sustainability, MDPI, vol. 13(12), pages 1-24, June.

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