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Open AccessArticle

An Islanding Signal-Based Smooth Transition Control in AC/DC Hybrid Micro-Grids

Shaanxi Key Laboratory of Smart Grid, Xi’an Jiaotong University, Xi’an 710049, China
NR Electric Co., Ltd., Nanjing 211102, China
State Grid Jibei Electric Power Company Limited Management Training Center, Beijing 102401, China
Author to whom correspondence should be addressed.
Appl. Sci. 2019, 9(14), 2804;
Received: 24 June 2019 / Revised: 9 July 2019 / Accepted: 9 July 2019 / Published: 12 July 2019
PDF [7078 KB, uploaded 12 July 2019]
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Smooth transition is one of the most important issues of micro-grids. The resulting transition is much impacted by the state step of the regulator. To suppress this mutation, this paper proposes a smooth transition control based on an islanding signal, which updates the state of the regulators by detecting the change of islanding signal. Pre-synchronization control is applied during the transition from islanding mode to grid-connected mode. In comparison, the proposed approach is superior over direct transition control and state follower-based transition control, with both easier regulator parameter configuration and better performance during transition time. View Full-Text
Keywords: hybrid micro-grid; droop control; smooth transition; islanding signal hybrid micro-grid; droop control; smooth transition; islanding signal

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Chen, Z.; Zheng, T.; Liu, C. An Islanding Signal-Based Smooth Transition Control in AC/DC Hybrid Micro-Grids. Appl. Sci. 2019, 9, 2804.

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