A Two-Layer Framework for Mitigating the Congestion of Urban Power Grids Based on Flexible Topology with Dynamic Thermal Rating
The urban power grid (UPG) combines transmission and distribution networks. Past studies on UPG congestion mitigation have primarily focused on relieving local congestion while ignoring large-scale energy transfer with safety margins and load balancing. This situation is expected to worsen with the...
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Institute of Electrical and Electronics Engineers Inc.
2025
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| author | Su Y. Teh J. Luo Q. Tan K. Yong J. |
| author2 | 57894612900 |
| author_facet | 57894612900 Su Y. Teh J. Luo Q. Tan K. Yong J. |
| author_sort | Su Y. |
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| collection | Institutional Repository |
| content_provider | Universiti Tenaga Nasional |
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| continent | Asia |
| country | Malaysia |
| description | The urban power grid (UPG) combines transmission and distribution networks. Past studies on UPG congestion mitigation have primarily focused on relieving local congestion while ignoring large-scale energy transfer with safety margins and load balancing. This situation is expected to worsen with the proliferation of renewable energy and electric vehicles. In this paper, a two-layer congestion mitigation framework is proposed, one which considers the congestion of the UPG with flexible topologies. In the upper-layer, the particle swarm optimization algorithm is employed to optimize the power supply distribution (PSD) of substation transformers. This is known as the upper-layer PSD. The lower-layer model recalculates the new PSD, known as the lower-layer PSD, based on the topology candidates. A candidate topology is at an optimum when the Euclidean distance mismatch between the upper-and lower-layer PSDs is the smallest. This optimum topology is tested by standard power flow to ascertain its feasibility. The optimum transitioning sequence between the initial and optimum topologies is also determined by the two-layer framework to minimize voltage deviation and line overloading of the UPG considering dynamic thermal rating. The proposed framework is tested on a 56-node test system. Results show that the proposed framework can significantly reduce congestion, maintain safety margins, and determine the optimum transitioning sequence. ? 2019 Power System Protection and Control Press. |
| format | Article |
| id | my.uniten.dspace-37035 |
| institution | Universiti Tenaga Nasional |
| publishDate | 2025 |
| publisher | Institute of Electrical and Electronics Engineers Inc. |
| record_format | dspace |
| spelling | my.uniten.dspace-370352025-03-03T15:46:49Z A Two-Layer Framework for Mitigating the Congestion of Urban Power Grids Based on Flexible Topology with Dynamic Thermal Rating Su Y. Teh J. Luo Q. Tan K. Yong J. 57894612900 56992718600 58451732600 56119108600 56119339200 Electric load flow Electric power system protection Electric power transmission Electric power transmission networks Electric substations Energy transfer Particle swarm optimization (PSO) Topology Traffic congestion Transformer protection Congestion mitigation Dynamic thermal ratings Flexible topology Power supply distribution Safety margin Transitioning sequence Two-layer Two-layer framework Upper layer Urban power grids Electric power distribution The urban power grid (UPG) combines transmission and distribution networks. Past studies on UPG congestion mitigation have primarily focused on relieving local congestion while ignoring large-scale energy transfer with safety margins and load balancing. This situation is expected to worsen with the proliferation of renewable energy and electric vehicles. In this paper, a two-layer congestion mitigation framework is proposed, one which considers the congestion of the UPG with flexible topologies. In the upper-layer, the particle swarm optimization algorithm is employed to optimize the power supply distribution (PSD) of substation transformers. This is known as the upper-layer PSD. The lower-layer model recalculates the new PSD, known as the lower-layer PSD, based on the topology candidates. A candidate topology is at an optimum when the Euclidean distance mismatch between the upper-and lower-layer PSDs is the smallest. This optimum topology is tested by standard power flow to ascertain its feasibility. The optimum transitioning sequence between the initial and optimum topologies is also determined by the two-layer framework to minimize voltage deviation and line overloading of the UPG considering dynamic thermal rating. The proposed framework is tested on a 56-node test system. Results show that the proposed framework can significantly reduce congestion, maintain safety margins, and determine the optimum transitioning sequence. ? 2019 Power System Protection and Control Press. Final 2025-03-03T07:46:49Z 2025-03-03T07:46:49Z 2024 Article 10.23919/PCMP.2023.000139 2-s2.0-85197819708 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85197819708&doi=10.23919%2fPCMP.2023.000139&partnerID=40&md5=ec33bba0e42187b0c13472997f0ce8fe https://irepository.uniten.edu.my/handle/123456789/37035 9 4 83 95 All Open Access; Gold Open Access Institute of Electrical and Electronics Engineers Inc. Scopus |
| spellingShingle | Electric load flow Electric power system protection Electric power transmission Electric power transmission networks Electric substations Energy transfer Particle swarm optimization (PSO) Topology Traffic congestion Transformer protection Congestion mitigation Dynamic thermal ratings Flexible topology Power supply distribution Safety margin Transitioning sequence Two-layer Two-layer framework Upper layer Urban power grids Electric power distribution Su Y. Teh J. Luo Q. Tan K. Yong J. A Two-Layer Framework for Mitigating the Congestion of Urban Power Grids Based on Flexible Topology with Dynamic Thermal Rating |
| title | A Two-Layer Framework for Mitigating the Congestion of Urban Power Grids Based on Flexible Topology with Dynamic Thermal Rating |
| title_full | A Two-Layer Framework for Mitigating the Congestion of Urban Power Grids Based on Flexible Topology with Dynamic Thermal Rating |
| title_fullStr | A Two-Layer Framework for Mitigating the Congestion of Urban Power Grids Based on Flexible Topology with Dynamic Thermal Rating |
| title_full_unstemmed | A Two-Layer Framework for Mitigating the Congestion of Urban Power Grids Based on Flexible Topology with Dynamic Thermal Rating |
| title_short | A Two-Layer Framework for Mitigating the Congestion of Urban Power Grids Based on Flexible Topology with Dynamic Thermal Rating |
| title_sort | two-layer framework for mitigating the congestion of urban power grids based on flexible topology with dynamic thermal rating |
| topic | Electric load flow Electric power system protection Electric power transmission Electric power transmission networks Electric substations Energy transfer Particle swarm optimization (PSO) Topology Traffic congestion Transformer protection Congestion mitigation Dynamic thermal ratings Flexible topology Power supply distribution Safety margin Transitioning sequence Two-layer Two-layer framework Upper layer Urban power grids Electric power distribution |
| url_provider | http://dspace.uniten.edu.my/ |