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A novel fault locator for power distribution system with neutral non-effectively grounded

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2 Author(s)
Shi Shenxing ; Dept. of Electr. Eng., Tsinghua Univ., Beijing, China ; Dong Xinzhou

Fault locator for power distribution system with neutral non-effectively grounded should locate phase-to-phase fault and single-phase-to-ground fault respectively. For phase-to-phase fault, the point can be located by power-frequency impedance. However, for single-phase-to-ground fault with limited power-frequency current not more than load current, a novel fault location technology should be developed. The paper will present a practical single-phase-to-ground fault location based on fault generated traveling waves acquired from one phase current transducer and zero sequence current transducer at first. Then implementation of the novel fault locator is proposed including hardware design and software flowchart. At last field tests will be made to verify the feasibility of the fault locator.

Published in:

Advanced Power System Automation and Protection (APAP), 2011 International Conference on  (Volume:2 )

Date of Conference:

16-20 Oct. 2011