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Consensus-Based Distributed Control with Communication Time Delays for Virtual Synchronous Generators in Isolate Microgrid
State Key Laboratory of Power System, Department of Electrical Engineering, Tsinghua University, Beijing, China
State Key Laboratory of Power System, Department of Electrical Engineering, Tsinghua University, Beijing, China
State Key Laboratory of Power System, Department of Electrical Engineering, Tsinghua University, Beijing, China
Shaanxi Regional Electric Power Design and Research Institute, Xi’an, China
Key Laboratory of Photovoltaic Power Generation and Grid-connected Technology (Qinghai Electrical Power Research In-stitute, Qinghai Electric Power Corporation, Xining, China)
Key Laboratory of Photovoltaic Power Generation and Grid-connected Technology (Qinghai Electrical Power Research In-stitute, Qinghai Electric Power Corporation, Xining, China)
- 1 State Key Laboratory of Power System, Department of Electrical Engineering, Tsinghua University, Beijing, China
- 2 State Key Laboratory of Power System, Department of Electrical Engineering, Tsinghua University, Beijing, China
- 3 State Key Laboratory of Power System, Department of Electrical Engineering, Tsinghua University, Beijing, China
- 4 Shaanxi Regional Electric Power Design and Research Institute, Xi’an, China
- 5 Key Laboratory of Photovoltaic Power Generation and Grid-connected Technology (Qinghai Electrical Power Research In-stitute, Qinghai Electric Power Corporation, Xining, China)
- 6 Key Laboratory of Photovoltaic Power Generation and Grid-connected Technology (Qinghai Electrical Power Research In-stitute, Qinghai Electric Power Corporation, Xining, China)
Energy and Power Engineering·Volume 09 (2017)·Pages 102–111·Published 6 April 2017·DOI10.4236/epe.2017.94B013
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Abstract
A consensus-based distributed control method of coordinated VSGs with communication time delays in isolate microgrid is proposed. When time delays are considered in communication, there are some effects on frequency restoration and active power output allocation. In the control structure, only local information exchange is needed, while the final frequency can be controlled to the nominal value and the VSGs can automatically share loads according to their rated values. An AC microgrid with three VSGs and some loads is implemented. The proposed control strategy is verified by MATLAB/ Simulink simulation results.
KeywordsVirtual Synchronous GeneratorTime DelaysDistributed ControlConsensus Algorithm
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