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<p>Quick detection and accurate fault locating in micro-networks are essential for reliable power delivery. In this respect, a new algorithm is proposed, and its performance is compared with several already developed ones in terms of accuracy, cost, and sensitivity to the fault resistance and location. Mathematical models for S2S (source-to-source line) and S2L (source-to-load line) circuits under PG (pole-to-ground) and PP (pole-to-pole) faults using local data are developed. Emplacing auxiliary capacitors after the circuit breakers amplifies the fault-related transient response, improving the algorithm's performance. The estimation results indicate that for fault resistance up to 6 ohms, the estimation accuracy of the new method is less than 2%, which is substantially better than the performance of the others. Thus, it is concluded that a promising approach has been developed.</p>

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Modified model-based fault location estimation in DC microgrids

  • 期刊论文

  • 发表日期：

    2025年11月19日

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  • S.S. Hosseini Limaei,
  • S. Seyedtabaii

摘要

Quick detection and accurate fault locating in micro-networks are essential for reliable power delivery. In this respect, a new algorithm is proposed, and its performance is compared with several already developed ones in terms of accuracy, cost, and sensitivity to the fault resistance and location. Mathematical models for S2S (source-to-source line) and S2L (source-to-load line) circuits under PG (pole-to-ground) and PP (pole-to-pole) faults using local data are developed. Emplacing auxiliary capacitors after the circuit breakers amplifies the fault-related transient response, improving the algorithm's performance. The estimation results indicate that for fault resistance up to 6 ohms, the estimation accuracy of the new method is less than 2%, which is substantially better than the performance of the others. Thus, it is concluded that a promising approach has been developed.