Distributed secondary control for power allocation and voltage restoration in islanded DC microgrids

This paper presents a distributed secondary control scheme for accurate power allocation and voltage restoration in islanded dc microgrids. Conventionally the droop control function is employed in the primary control layer to realize power sharing among the distributed generators (DGs) in a decentra...

全面介紹

Saved in:
書目詳細資料
Main Authors: Guo, Fanghong, Xu, Qianwen, Wen, Changyun, Wang, Lei, Wang, Peng
其他作者: School of Electrical and Electronic Engineering
格式: Article
語言:English
出版: 2020
主題:
在線閱讀:https://hdl.handle.net/10356/141334
標簽: 添加標簽
沒有標簽, 成為第一個標記此記錄!
機構: Nanyang Technological University
語言: English
id sg-ntu-dr.10356-141334
record_format dspace
spelling sg-ntu-dr.10356-1413342020-06-08T01:23:28Z Distributed secondary control for power allocation and voltage restoration in islanded DC microgrids Guo, Fanghong Xu, Qianwen Wen, Changyun Wang, Lei Wang, Peng School of Electrical and Electronic Engineering Engineering::Electrical and electronic engineering Distributed Control Secondary Control This paper presents a distributed secondary control scheme for accurate power allocation and voltage restoration in islanded dc microgrids. Conventionally the droop control function is employed in the primary control layer to realize power sharing among the distributed generators (DGs) in a decentralized fashion. However, the dc bus voltage may deviate from its nominal value due to different load profiles. In order to restore the dc bus voltage to its nominal value while maintaining the power sharing accuracy, a distributed control scheme is proposed in the secondary control layer. By using limited information of dc bus voltage and the secondary control inputs of their neighboring controllers, a distributed secondary control input can be designed and then sent to its corresponding primary controller. Besides, compared to most existing methods, no global information is required and only dc bus voltage feedback is needed. In addition, by employing the idea of pinning control, our proposed secondary control can be further simplified by only sending the dc bus voltage to one DG. An islanded dc microgrid test system is built in the MATLAB Simulink environment to validate our proposed method. An experimental prototype consisting of two DGs is designed to demonstrate the newly proposed approach and verify the obtained theoretical results. 2020-06-08T01:23:27Z 2020-06-08T01:23:27Z 2018 Journal Article Guo, F., Xu, Q., Wen, C., Wang, L., & Wang, P. (2018). Distributed secondary control for power allocation and voltage restoration in islanded DC microgrids. IEEE Transactions on Sustainable Energy, 9(4), 1857-1869. doi:10.1109/TSTE.2018.2816944 1949-3029 https://hdl.handle.net/10356/141334 10.1109/TSTE.2018.2816944 2-s2.0-85044051981 4 9 1857 1869 en IEEE Transactions on Sustainable Energy © 2018 IEEE. All rights reserved.
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic Engineering::Electrical and electronic engineering
Distributed Control
Secondary Control
spellingShingle Engineering::Electrical and electronic engineering
Distributed Control
Secondary Control
Guo, Fanghong
Xu, Qianwen
Wen, Changyun
Wang, Lei
Wang, Peng
Distributed secondary control for power allocation and voltage restoration in islanded DC microgrids
description This paper presents a distributed secondary control scheme for accurate power allocation and voltage restoration in islanded dc microgrids. Conventionally the droop control function is employed in the primary control layer to realize power sharing among the distributed generators (DGs) in a decentralized fashion. However, the dc bus voltage may deviate from its nominal value due to different load profiles. In order to restore the dc bus voltage to its nominal value while maintaining the power sharing accuracy, a distributed control scheme is proposed in the secondary control layer. By using limited information of dc bus voltage and the secondary control inputs of their neighboring controllers, a distributed secondary control input can be designed and then sent to its corresponding primary controller. Besides, compared to most existing methods, no global information is required and only dc bus voltage feedback is needed. In addition, by employing the idea of pinning control, our proposed secondary control can be further simplified by only sending the dc bus voltage to one DG. An islanded dc microgrid test system is built in the MATLAB Simulink environment to validate our proposed method. An experimental prototype consisting of two DGs is designed to demonstrate the newly proposed approach and verify the obtained theoretical results.
author2 School of Electrical and Electronic Engineering
author_facet School of Electrical and Electronic Engineering
Guo, Fanghong
Xu, Qianwen
Wen, Changyun
Wang, Lei
Wang, Peng
format Article
author Guo, Fanghong
Xu, Qianwen
Wen, Changyun
Wang, Lei
Wang, Peng
author_sort Guo, Fanghong
title Distributed secondary control for power allocation and voltage restoration in islanded DC microgrids
title_short Distributed secondary control for power allocation and voltage restoration in islanded DC microgrids
title_full Distributed secondary control for power allocation and voltage restoration in islanded DC microgrids
title_fullStr Distributed secondary control for power allocation and voltage restoration in islanded DC microgrids
title_full_unstemmed Distributed secondary control for power allocation and voltage restoration in islanded DC microgrids
title_sort distributed secondary control for power allocation and voltage restoration in islanded dc microgrids
publishDate 2020
url https://hdl.handle.net/10356/141334
_version_ 1681058245221810176