4.6 Article Proceedings Paper

Testing a Bus-Differential Protection for Buses Interconnecting Battery Storage Systems

期刊

IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS
卷 57, 期 4, 页码 3511-3521

出版社

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TIA.2021.3079376

关键词

Bus-differential protection (BDP); current transformers (CTs); current transformer saturation; grid-connected battery storage units; instantaneous apparent power; power system protection

资金

  1. Natural Sciences and Engineering Research Council of Canada (NSERC)

向作者/读者索取更多资源

The proposed bus-differential protection based on alpha beta 0 components of apparent powers is able to provide fast, accurate, and reliable responses to internal and external faults in the protected bus interconnected with battery storage systems (BSSs). The test results demonstrate the minor sensitivity of the proposed protection to the mode of operation of the BSS, fault location, and fault type.
This article presents the implementation and performance testing of a bus-differential protection for buses, which interconnect battery storage systems (BSSs). The proposed bus-differential protection is based on employing the alpha beta 0 components of the apparent powers flowing in all branches of the protected bus. The alpha beta 0 components of the apparent powers are employed due to their ability to accommodate changes in the power flow direction in the branches connected to the protected bus. The apparent powers are determined using the measured voltage and currents in all branches connected to the protected bus. The proposed alpha beta 0-based bus-differential protection is implemented and tested for internal and external faults, which are created during the charging and discharging of BSSs. Test results demonstrate the ability of the proposed alpha beta 0-based bus-differential protection to initiate fast, accurate, and reliable responses to internal and external faults in the protected bus. Observed response features of the proposed protection are found to have minor sensitivity to the mode of operation of the BSS (charging and discharging), fault location (internal and external), and/or fault type.

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