Optimal Design and Real Time Implementation of Autonomous Microgrid Including Active Load

Mohamed A. Hassan, Muhammed Y. Worku and Mohamed A. Abido
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Mohamed A. Hassan: Research Institute, Center of Engineering, King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia
Muhammed Y. Worku: Research Institute, Center of Engineering, King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia
Mohamed A. Abido: Electrical Engineering Department, King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia

Energies, 2018, vol. 11, issue 5, 1-16

Abstract: Controller gains and power-sharing parameters are the main parameters affect the dynamic performance of the microgrid. Considering an active load to the autonomous microgrid, the stability problem will be more involved. In this paper, the active load effect on microgrid dynamic stability is explored. An autonomous microgrid including three inverter-based distributed generations (DGs) with an active load is modeled and the associated controllers are designed. Controller gains of the inverters and active load as well as Phase Locked Loop ( PLL ) parameters are optimally tuned to guarantee overall system stability. A weighted objective function is proposed to minimize the error in both measured active power and DC voltage based on time-domain simulations. Different AC and DC disturbances are applied to verify and assess the effectiveness of the proposed control strategy. The results demonstrate the potential of the proposed controller to enhance the microgrid stability and to provide efficient damping characteristics. Additionally, the proposed controller is compared with the literature to demonstrate its superiority. Finally, the microgrid considered has been established and implemented on real time digital simulator (RTDS). The experimental results validate the simulation results and approve the effectiveness of the proposed controllers to enrich the stability of the considered microgrid.

Keywords: active loads; control; distributed generation; dynamic stability; microgrid; PLL and optimization (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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