Xu, Xiaotong, Wen, Huiqing, Jiang, Lin ORCID: 0000-0001-6531-2791 and Hu, Yihua ORCID: 0000-0002-1007-1617
(2017)
Hybrid Control and Protection Scheme for Inverter Dominated Microgrids.
JOURNAL OF POWER ELECTRONICS, 17 (3).
pp. 744-755.
Text
JPE-16-05-195.pdf - Author Accepted Manuscript Download (743kB) |
Abstract
With the high penetration of various sustainable energy sources, the control and protection of Microgrids has become a challenging problem considering the inherent current limitation feature of inverter-based Distributed Generators (DGs) and the bidirectional power flow in Microgrids. In this paper, a hybrid control and protection scheme is proposed, which combines the traditional inverse-time overcurrent protection with the biased differential protection for different feeders with different kinds of loads. It naturally accommodates various control strategies such as P-Q control and V-f control. The parameter settings of the protection scheme are analyzed and calculated through a fast Fourier transform algorithm, and the stability of the control strategy is discussed by building a small signal model in MATLAB. Different operation modes such as the grid-connected mode, the islanding mode, and the transitions between these two modes are ensured. A Microgrid model is established in PSCAD and the analysis results show that a Microgrid system can be effectively protected against different faults such as the single phase to ground and the three phase faults in both the grid-connected and islanded operation modes.
Item Type: | Article |
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Uncontrolled Keywords: | Biased differential protection, Distributed generators, Grid-connected mode, Inverse-time overcurrent protection, Islanded mode, Microgrid protection |
Depositing User: | Symplectic Admin |
Date Deposited: | 26 Jun 2017 09:27 |
Last Modified: | 19 Jan 2023 07:02 |
DOI: | 10.6113/JPE.2017.17.3.744 |
Related URLs: | |
URI: | https://livrepository.liverpool.ac.uk/id/eprint/3008127 |