An optimal secondary multi-bus voltage and reactive power sharing control based on non-iterative decoupled linearized power flow for islanded microgrids
The subject of optimal secondary control of power-electronic-interfaced distributed energy resources (DERs) in droop-controlled microgrids has garnered significant research attention in recent years. While the feasibility of optimal secondary control based on non-linear power flow has been proven, t...
| Main Authors: | , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2022
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| Online Access: | https://hdl.handle.net/10356/154064 |
| _version_ | 1811682110353702912 |
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| author | Wong, Cassandra Yi Chyn Lim, Chee Shen Goh, Hui Hwang Cruden, Andrew Rotaru, Mihai Dragos Kong, Xin |
| author2 | Energy Research Institute @ NTU (ERI@N) |
| author_facet | Energy Research Institute @ NTU (ERI@N) Wong, Cassandra Yi Chyn Lim, Chee Shen Goh, Hui Hwang Cruden, Andrew Rotaru, Mihai Dragos Kong, Xin |
| author_sort | Wong, Cassandra Yi Chyn |
| collection | NTU |
| description | The subject of optimal secondary control of power-electronic-interfaced distributed energy resources (DERs) in droop-controlled microgrids has garnered significant research attention in recent years. While the feasibility of optimal secondary control based on non-linear power flow has been proven, the power flow algorithm is essentially iterative in nature. This work proposes an optimal secondary control with non-iterative power flow to regulate multi-bus voltages and DERs' reactive powers. The control scheme incorporates a modified Decoupled Linearized Power Flow that is known to be superior in terms of reactive power and bus voltage magnitude estimation, as compared to classical DC power flow, into a constrained quadratic programming. Q-V droop is integrated into the linear power flow in place of the slack bus. The proposed optimal scheme is provably accurate for maintaining reactive power sharing while regulating multiple load-bus voltages. The additional degrees of freedom enabled by the weighting factors significantly improve the control flexibility of the secondary controller. The allowable bus voltages and DER kVar capacity limits have also been considered by the control algorithm. The work is proven through an accurate co-simulation study comprising an 18-bus network and a full primary control models in PowerFactory, interfaced through industrial communication tool MatrikonOPC. |
| first_indexed | 2024-10-01T03:51:38Z |
| format | Journal Article |
| id | ntu-10356/154064 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T03:51:38Z |
| publishDate | 2022 |
| record_format | dspace |
| spelling | ntu-10356/1540642022-02-19T20:11:16Z An optimal secondary multi-bus voltage and reactive power sharing control based on non-iterative decoupled linearized power flow for islanded microgrids Wong, Cassandra Yi Chyn Lim, Chee Shen Goh, Hui Hwang Cruden, Andrew Rotaru, Mihai Dragos Kong, Xin Energy Research Institute @ NTU (ERI@N) Engineering::Electrical and electronic engineering Microgrid Droop Control The subject of optimal secondary control of power-electronic-interfaced distributed energy resources (DERs) in droop-controlled microgrids has garnered significant research attention in recent years. While the feasibility of optimal secondary control based on non-linear power flow has been proven, the power flow algorithm is essentially iterative in nature. This work proposes an optimal secondary control with non-iterative power flow to regulate multi-bus voltages and DERs' reactive powers. The control scheme incorporates a modified Decoupled Linearized Power Flow that is known to be superior in terms of reactive power and bus voltage magnitude estimation, as compared to classical DC power flow, into a constrained quadratic programming. Q-V droop is integrated into the linear power flow in place of the slack bus. The proposed optimal scheme is provably accurate for maintaining reactive power sharing while regulating multiple load-bus voltages. The additional degrees of freedom enabled by the weighting factors significantly improve the control flexibility of the secondary controller. The allowable bus voltages and DER kVar capacity limits have also been considered by the control algorithm. The work is proven through an accurate co-simulation study comprising an 18-bus network and a full primary control models in PowerFactory, interfaced through industrial communication tool MatrikonOPC. Published version This work was supported in part by the School of Engineering, University of Southampton, U.K., and in part by the School of Electrical Engineering, Guangxi University, China. 2022-02-14T08:09:45Z 2022-02-14T08:09:45Z 2021 Journal Article Wong, C. Y. C., Lim, C. S., Goh, H. H., Cruden, A., Rotaru, M. D. & Kong, X. (2021). An optimal secondary multi-bus voltage and reactive power sharing control based on non-iterative decoupled linearized power flow for islanded microgrids. IEEE Access, 9, 105242-105254. https://dx.doi.org/10.1109/ACCESS.2021.3099432 2169-3536 https://hdl.handle.net/10356/154064 10.1109/ACCESS.2021.3099432 2-s2.0-85111962498 9 105242 105254 en IEEE Access © 2021 IEEE. This journal is 100% open access, which means that all content is freely available without charge to users or their institutions. All articles accepted after 12 June 2019 are published under a CC BY 4.0 license, and the author retains copyright. Users are allowed to read, download, copy, distribute, print, search, or link to the full texts of the articles, or use them for any other lawful purpose, as long as proper attribution is given. application/pdf |
| spellingShingle | Engineering::Electrical and electronic engineering Microgrid Droop Control Wong, Cassandra Yi Chyn Lim, Chee Shen Goh, Hui Hwang Cruden, Andrew Rotaru, Mihai Dragos Kong, Xin An optimal secondary multi-bus voltage and reactive power sharing control based on non-iterative decoupled linearized power flow for islanded microgrids |
| title | An optimal secondary multi-bus voltage and reactive power sharing control based on non-iterative decoupled linearized power flow for islanded microgrids |
| title_full | An optimal secondary multi-bus voltage and reactive power sharing control based on non-iterative decoupled linearized power flow for islanded microgrids |
| title_fullStr | An optimal secondary multi-bus voltage and reactive power sharing control based on non-iterative decoupled linearized power flow for islanded microgrids |
| title_full_unstemmed | An optimal secondary multi-bus voltage and reactive power sharing control based on non-iterative decoupled linearized power flow for islanded microgrids |
| title_short | An optimal secondary multi-bus voltage and reactive power sharing control based on non-iterative decoupled linearized power flow for islanded microgrids |
| title_sort | optimal secondary multi bus voltage and reactive power sharing control based on non iterative decoupled linearized power flow for islanded microgrids |
| topic | Engineering::Electrical and electronic engineering Microgrid Droop Control |
| url | https://hdl.handle.net/10356/154064 |
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