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Resiliency in active distribution systems via network reconfiguration
Sustainable Energy Grids & Networks ( IF 5.4 ) Pub Date : 2021-01-09 , DOI: 10.1016/j.segan.2021.100434
Praveen Agrawal , Neeraj Kanwar , Nikhil Gupta , K.R. Niazi , Anil Swarnkar

Distribution systems have to withstand against natural calamities in such a way that self-healing (SH) persists even during blackout with multiple line faults in the system. Owing to limited power generation from distributed energy resources (DERs), the real challenge behind SH algorithm (SHA) is to restore maximum priority loads (PLs) while satisfying vital network operational constraints besides maintaining better efficiency and reliability of the system. This paper proposes a three-stage SHA to enhance resiliency of distribution systems. Proposed SHA can efficiently restore maximum PLs via network reconfiguration (NR) without intentional islanding during blackout with multiple line faults in the system. The algorithm first transform the faulty distribution network (FDN) into an augmented FDN (AFDN) just to facilitate load flow and tedious mesh checks and then maximizes PLs to be energized while maintaining power balance and other network operational constraints. Finally, AFDN is optimally reconfigured to enhance efficiency and node voltage profile of the system considering uncertain environment of load and generation. Proposed method is demonstrated on a standard test bench while duly addressing a variety of line faults and the results obtained are presented.



中文翻译:

通过网络重新配置活动分配系统中的弹性

配电系统必须抵御自然灾害,即使在系统中出现多条线路故障的停电期间,自愈(SH)仍然会持续。由于分布式能源(DER)的发电量有限,SH算法(SHA)背后的真正挑战是在恢复最大优先级负载(PLs)的同时满足重要的网络运行约束,同时保持更高的系统效率和可靠性。本文提出了一个三阶段的SHA来增强配电系统的弹性。提议的SHA可以通过网络重新配置(NR)有效地恢复最大PL,而不会在系统出现多条线路故障的停电期间有意孤岛。该算法首先将故障配电网络(FDN)转换为增强型FDN(AFDN),仅用于促进潮流和繁琐的网格检查,然后在保持功率平衡和其他网络运行约束的同时最大化要激励的PL。最后,考虑到不确定的负载和发电环境,AFDN进行了最佳配置,以提高系统的效率和节点电压曲线。在适当解决各种线路故障的同时,在标准测试台上演示了所建议的方法,并介绍了获得的结果。

更新日期:2021-01-14
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