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- Publisher Website: 10.1109/CDC.2017.8264041
- Scopus: eid_2-s2.0-85046421885
- WOS: WOS:000424696902089
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Conference Paper: Local stability of DC microgrids: A perspective of graph laplacians with self-loops
Title | Local stability of DC microgrids: A perspective of graph laplacians with self-loops |
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Authors | |
Issue Date | 2017 |
Publisher | Institute of Electrical and Electronics Engineers. The Journal's web site is located at https://ieeexplore.ieee.org/xpl/conhome.jsp?punumber=1000188 |
Citation | Proceedings of 2017 IEEE 56th Annual Conference on Decision and Control (CDC), Melbourne, VIC, Australia, 12-15 December 2017, p. 2629-2634 How to Cite? |
Abstract | This paper studies the local stability problem of DC microgrids from a network-based perspective that provides new insights. Firstly, the stability problem is transferred to the positive definiteness of the Laplacian matrix of a loopy graph. The graph preserves the information of the original DC network structure, and contains both positive and negative self-loops that are introduced by the differential conductances of net loads in the microgrid. Then, the concept of effective grounded conductance is introduced to measure the impact of self-loops. New criteria in terms of the effective grounded conductance are established to check the positive definiteness of the Laplacian matrix of a loopy graph, and thus can be used to infer the local stability of DC microgrids. It shows that the negative effective grounded conductance is the crucial factor in triggering the instability of DC microgrids. The instability mechanism can be physically interpreted as the loss of passivity of some buses caused by the negative differential conductances of net loads. |
Persistent Identifier | http://hdl.handle.net/10722/259683 |
ISSN | 2023 SCImago Journal Rankings: 0.721 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Song, Y | - |
dc.contributor.author | Hill, DJ | - |
dc.contributor.author | Liu, T | - |
dc.date.accessioned | 2018-09-03T04:12:05Z | - |
dc.date.available | 2018-09-03T04:12:05Z | - |
dc.date.issued | 2017 | - |
dc.identifier.citation | Proceedings of 2017 IEEE 56th Annual Conference on Decision and Control (CDC), Melbourne, VIC, Australia, 12-15 December 2017, p. 2629-2634 | - |
dc.identifier.issn | 0743-1546 | - |
dc.identifier.uri | http://hdl.handle.net/10722/259683 | - |
dc.description.abstract | This paper studies the local stability problem of DC microgrids from a network-based perspective that provides new insights. Firstly, the stability problem is transferred to the positive definiteness of the Laplacian matrix of a loopy graph. The graph preserves the information of the original DC network structure, and contains both positive and negative self-loops that are introduced by the differential conductances of net loads in the microgrid. Then, the concept of effective grounded conductance is introduced to measure the impact of self-loops. New criteria in terms of the effective grounded conductance are established to check the positive definiteness of the Laplacian matrix of a loopy graph, and thus can be used to infer the local stability of DC microgrids. It shows that the negative effective grounded conductance is the crucial factor in triggering the instability of DC microgrids. The instability mechanism can be physically interpreted as the loss of passivity of some buses caused by the negative differential conductances of net loads. | - |
dc.language | eng | - |
dc.publisher | Institute of Electrical and Electronics Engineers. The Journal's web site is located at https://ieeexplore.ieee.org/xpl/conhome.jsp?punumber=1000188 | - |
dc.relation.ispartof | IEEE Conference on Decision and Control Proceedings | - |
dc.title | Local stability of DC microgrids: A perspective of graph laplacians with self-loops | - |
dc.type | Conference_Paper | - |
dc.identifier.email | Song, Y: songyue@hku.hk | - |
dc.identifier.email | Hill, DJ: dhill@eee.hku.hk | - |
dc.identifier.email | Liu, T: taoliu@eee.hku.hk | - |
dc.identifier.authority | Hill, DJ=rp01669 | - |
dc.identifier.authority | Liu, T=rp02045 | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1109/CDC.2017.8264041 | - |
dc.identifier.scopus | eid_2-s2.0-85046421885 | - |
dc.identifier.hkuros | 288522 | - |
dc.identifier.hkuros | 293674 | - |
dc.identifier.spage | 2629 | - |
dc.identifier.epage | 2634 | - |
dc.identifier.isi | WOS:000424696902089 | - |
dc.publisher.place | United States | - |
dc.identifier.issnl | 0743-1546 | - |