To evaluate the location performance of single phase to earth fault in distribution systems

the corresponding test technology is investigated. According to an analysis of the drawbacks of the secondary injection test method

it is pointed out that it is not suitable for the evaluation of the location performance of single phase to earth fault. A new approach to test the behavior of single phase to earth fault location featuring a controllable electric arc generating device is put forward. With the new device

the phenomenon of permanent and temporary single phase to earth without arc

with stable arc or intermittent arc through various transitional resistance can be generated in the field. The composition of moveable complete equipment for the single phase to earth fault location test in the field is described. The application of the approach proposed is briefly treated

which shows its feasibility and effectiveness for evaluation of the location performance of single phase to earth fault.