Many industrial power systems have been operatedwith floating neutral or high resistance grounding. Withtraditional fault detection methods, based on zero sequencecurrent, it is difficult to satisfy the requirement of distributionautomation (DA). In order to improve this, some noveltechniques for ground fault feeder detection are presented in thispaper, and they are implemented by using the informationobtained from the feeder terminal unit (FTU). The faulty feederis identified with fuzzy analysis. These protection schemes havebeen verified by EMTP simulation. A prototype has beendeveloped and tested in a dynamic power system. Results showthat these proposed protection schemes have high sensitivity androbustness to detect all kinds of ground faults.