Self-healing strategy for distribution networks with AC flexible interconnection devices
The closing-loop and splitting-loop operations of sectionalizing switches and tie switches serve as crucial means for self-healing in distribution network feeder areas. However, the inrush currents generated during closing-loop operations impact the secure and stable operation of distribution networ...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Frontiers Media S.A.
2025-08-01
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| Series: | Frontiers in Energy Research |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/articles/10.3389/fenrg.2025.1572606/full |
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| Summary: | The closing-loop and splitting-loop operations of sectionalizing switches and tie switches serve as crucial means for self-healing in distribution network feeder areas. However, the inrush currents generated during closing-loop operations impact the secure and stable operation of distribution networks. To address these challenges, this paper analyzes the effects of steady-state circulating currents and closing-loop inrush currents caused by tie-switch operations on loop-closing branches. Leveraging the dynamic compensation characteristics of AC flexible interconnection devices (FIDs), we elucidate the working principles of FID-based distribution network self-healing and propose an inrush-current-free closing-loop method utilizing FIDs. For distribution networks incorporating wind and solar resources, constraints characterizing line power flow, nodal voltage, branch capacity, and network topology are established, forming a multi-objective optimization model for self-healing that considers renewable energy accommodation capacity. Finally, case studies demonstrate the effectiveness of the proposed self-healing scheme in enhancing renewable energy accommodation capabilities. |
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| ISSN: | 2296-598X |