Research on Fault Location of Distribution Lines Based on the Standing Wave Principle

Aiming at the fast and accurate location of a single-phase ground fault in distribution network, single terminal injection signal method, based on standing wave principle, is proposed. Firstly, double conductor principle formation, uniform transmission line theory, analyzed, mathematical model distance algorithm established. Secondly, detection circuit built by simulation, trend its relationship with unit capacitance inductance are studied. By setting source frequency point interval other parameters, this method under direct grounding through resistance simulated Finally, calculated located an experiment. The results show that positioning accuracy high, which verifies effectiveness method.