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| A dynamic fault recovery strategy for an AC/DC distribution network with distributed energy storage system |
| DOI：10.19783/j.cnki.pspc.231547 |
| Key Words:AC/DC distribution network fault recovery dynamic strategy AC/DC power flow comprehensive satisfaction |
| Author Name | Affiliation | | LI Yingliang1 | 1. School of Electronic Engineering, Xi’an Shiyou University, Xi’an 710065, China
2. Shaanxi Railway Institute, Weinan 714000, China | | SUN Nan1 | 1. School of Electronic Engineering, Xi’an Shiyou University, Xi’an 710065, China
2. Shaanxi Railway Institute, Weinan 714000, China | | WANG Deming2 | 1. School of Electronic Engineering, Xi’an Shiyou University, Xi’an 710065, China
2. Shaanxi Railway Institute, Weinan 714000, China | | GUO Feiyan1 | 1. School of Electronic Engineering, Xi’an Shiyou University, Xi’an 710065, China
2. Shaanxi Railway Institute, Weinan 714000, China | | LI Fei1 | 1. School of Electronic Engineering, Xi’an Shiyou University, Xi’an 710065, China
2. Shaanxi Railway Institute, Weinan 714000, China |
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| Abstract:When there are multiple faults, then considering the impact of differences in fault repair times, and the variability in distributed power generation and dynamic changes in load demands on the fault recovery strategy for AC/DC distribution networks, this paper proposes a dynamic fault recovery strategy tailored to such scenarios. For AC/DC distribution networks with distributed energy storage systems, an emergency power supply is achieved through a staged islanding strategy for blackout areas. Subsequently, with the maximization of the comprehensive satisfaction index for fault recovery as the objective, it comprehensively addresses multiple constraints, including AC/DC power flow, node voltage, branch current, and energy constraints. Concurrently, the optimal fault recovery strategy is determined by integrating the progress of fault repairs with factors such as distributed power generation and load demands. Finally, a case study is carried out on a modified IEEE 33-bus system representing an AC/DC distribution network. The results demonstrate the effectiveness of the proposed dynamic fault recovery strategy in resolving faults. The strategy allows for flexible adjustments to the fault recovery approach based on real-time information, ensuring the reliability and safety of the AC/DC distribution network operation. |
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