LV DC microgrid attracts research interest with its great advantages. However, LV DC microgridprotection still cannot isolate faults rapidly and accurately. In this paper, faults in LV bipolar DC microgrid are analyzed in detail, and then different types and different locations of the faultare distinguished by comparing absolute value of transient fault current derivative. An inverse-time protection method based on absolute value of transient fault current derivative is proposed for cable faults. This metho...