Optimizing grid-dependent and islanded network operations through synergic active-reactive power integration
DG integration improves distribution network performance and also enables microgrid (MG) formation for islanded operation. However, existing studies assume an isolated operation approach for islanded mode, which is unrealistic and increases overall system costs while adding complexity to the grid. T...
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Elsevier
2024-12-01
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| Series: | Results in Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2590123024014853 |
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| author | Zohaib Hussain Leghari Dalila Mat Said Mazhar Baloch Pervez Hameed Shaikh Hafiz Mudassir Munir Radomir Gono Tomas Novak Petr Moldrik |
| author_facet | Zohaib Hussain Leghari Dalila Mat Said Mazhar Baloch Pervez Hameed Shaikh Hafiz Mudassir Munir Radomir Gono Tomas Novak Petr Moldrik |
| author_sort | Zohaib Hussain Leghari |
| collection | DOAJ |
| description | DG integration improves distribution network performance and also enables microgrid (MG) formation for islanded operation. However, existing studies assume an isolated operation approach for islanded mode, which is unrealistic and increases overall system costs while adding complexity to the grid. This paper presents a dual-stage methodology for the efficient operation of distributed generation (DG) and shunt capacitor banks (SCBs) in radial distribution networks (RDNs) for both grid-integrated and islanded modes. The first stage proposes an improved Jaya algorithm (IJaya) to optimize DG and SCB allocation during grid-connected operation, aiming to reduce power loss and improve voltage profiles. IJaya employs a dynamic weight-based grid search to address premature convergence. The second stage formulates a multiobjective function for the islanded operation to minimize power loss and underutilization of DG-SCB capacity. Case studies on IEEE 33- and 69-bus RDNs show IJaya reduces power loss by 38.84 % and improves voltage by 3.26 % in grid-connected networks compared to existing methods. The proposed analytical approach for islanded operation tunes the source power factor, reducing DG-SCB underutilization by up to 15.83 % for power factors between 0.8 and 0.93. The results demonstrate that operating distributed resources near optimal capacities meets a larger portion of the island network's energy needs. |
| format | Article |
| id | doaj-art-6b5cdbf5b49447d8b81440888d8ac13c |
| institution | Kabale University |
| issn | 2590-1230 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Engineering |
| spelling | doaj-art-6b5cdbf5b49447d8b81440888d8ac13c2024-12-19T10:58:41ZengElsevierResults in Engineering2590-12302024-12-0124103231Optimizing grid-dependent and islanded network operations through synergic active-reactive power integrationZohaib Hussain Leghari0Dalila Mat Said1Mazhar Baloch2Pervez Hameed Shaikh3Hafiz Mudassir Munir4Radomir Gono5Tomas Novak6Petr Moldrik7Department of Electrical Engineering, Mehran University of Engineering and Technology (MUET), Jamshoro, 76062, Sindh, Pakistan; Centre of Electrical Energy Systems (CEES), Institute of Future Energy (IFE), Universiti Teknologi Malaysia (UTM), 81310 Johor Bahru, Johor, Malaysia; School of Electrical Engineering (SKE), Faculty of Engineering, Universiti Teknologi Malaysia (UTM), 81310, Johor Bahru, Johor, Malaysia; Corresponding authors.Centre of Electrical Energy Systems (CEES), Institute of Future Energy (IFE), Universiti Teknologi Malaysia (UTM), 81310 Johor Bahru, Johor, Malaysia; School of Electrical Engineering (SKE), Faculty of Engineering, Universiti Teknologi Malaysia (UTM), 81310, Johor Bahru, Johor, MalaysiaCollege of Engineering, A'Sharqiyah University, Ibra, 400, OmanDepartment of Electrical Engineering, Mehran University of Engineering and Technology (MUET), Jamshoro, 76062, Sindh, PakistanDepartment of Electrical Engineering, Sukkur IBA University, Sukkur 65200, Sindh, Pakistan; Corresponding authors.Department of Electrical Power Engineering, Faculty of Electrical Engineering and Computer Science, VSB-Technical University of Ostrava, 708-00 Ostrava, Czech RepublicDepartment of Electrical Power Engineering, Faculty of Electrical Engineering and Computer Science, VSB-Technical University of Ostrava, 708-00 Ostrava, Czech RepublicDepartment of Electrical Power Engineering, Faculty of Electrical Engineering and Computer Science, VSB-Technical University of Ostrava, 708-00 Ostrava, Czech RepublicDG integration improves distribution network performance and also enables microgrid (MG) formation for islanded operation. However, existing studies assume an isolated operation approach for islanded mode, which is unrealistic and increases overall system costs while adding complexity to the grid. This paper presents a dual-stage methodology for the efficient operation of distributed generation (DG) and shunt capacitor banks (SCBs) in radial distribution networks (RDNs) for both grid-integrated and islanded modes. The first stage proposes an improved Jaya algorithm (IJaya) to optimize DG and SCB allocation during grid-connected operation, aiming to reduce power loss and improve voltage profiles. IJaya employs a dynamic weight-based grid search to address premature convergence. The second stage formulates a multiobjective function for the islanded operation to minimize power loss and underutilization of DG-SCB capacity. Case studies on IEEE 33- and 69-bus RDNs show IJaya reduces power loss by 38.84 % and improves voltage by 3.26 % in grid-connected networks compared to existing methods. The proposed analytical approach for islanded operation tunes the source power factor, reducing DG-SCB underutilization by up to 15.83 % for power factors between 0.8 and 0.93. The results demonstrate that operating distributed resources near optimal capacities meets a larger portion of the island network's energy needs.http://www.sciencedirect.com/science/article/pii/S2590123024014853Grid-integrated and islanded operationsDistributed generationShunt capacitor banksDistribution networkAnalytical methodImproved Jaya optimization algorithm |
| spellingShingle | Zohaib Hussain Leghari Dalila Mat Said Mazhar Baloch Pervez Hameed Shaikh Hafiz Mudassir Munir Radomir Gono Tomas Novak Petr Moldrik Optimizing grid-dependent and islanded network operations through synergic active-reactive power integration Results in Engineering Grid-integrated and islanded operations Distributed generation Shunt capacitor banks Distribution network Analytical method Improved Jaya optimization algorithm |
| title | Optimizing grid-dependent and islanded network operations through synergic active-reactive power integration |
| title_full | Optimizing grid-dependent and islanded network operations through synergic active-reactive power integration |
| title_fullStr | Optimizing grid-dependent and islanded network operations through synergic active-reactive power integration |
| title_full_unstemmed | Optimizing grid-dependent and islanded network operations through synergic active-reactive power integration |
| title_short | Optimizing grid-dependent and islanded network operations through synergic active-reactive power integration |
| title_sort | optimizing grid dependent and islanded network operations through synergic active reactive power integration |
| topic | Grid-integrated and islanded operations Distributed generation Shunt capacitor banks Distribution network Analytical method Improved Jaya optimization algorithm |
| url | http://www.sciencedirect.com/science/article/pii/S2590123024014853 |
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