Work

Closed-Form Fault Location for Short Untransposed Transmission Lines Using Only Post-Fault Data

Year: 2026

Type: conference-paper

Abstract: In practical power systems, transmission lines are often operated in an untransposed configuration, which can degrade the accuracy of conventional fault-location methods. Accurate fault location is essential for minimizing outage duration and ensuring reliable power supply. This paper presents a closed-form algorithm for estimating fault location in short untransposed transmission lines that does not need line parameters to be known. The method operates using unsynchronized voltage and current measurements from both terminals. The synchronization angle is estimated by assuming that one phase remains healthy during the fault, making the algorithm applicable to asymmetrical faults. The key contribution of the proposed approach is that it eliminates the need for pre-fault measurements while maintaining robustness against synchronization mismatch. The performance of the algorithm is validated through detailed PSCAD simulations. Comparative analysis with existing fault-location techniques demonstrates improved accuracy under various fault conditions.

Source: IEEE International Conference on Sustainable Energy and Future Electric Transportation (SEFET)

DOI: 10.1109/sefet69291.2026.11687189

Authors: Rohit Ray, Kaustav Kalita, S. Sivasubramani, Abhineet Prakash, S.K. Parida

Institutions: Indian Institute of Technology Patna, Indian Institute of Technology Bhubaneswar

Language: English

Topic: Power Systems Fault Detection

Subfield: Control and Systems Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Industry, innovation and infrastructure

Open Access status: hybrid

OpenAlex ID: W7213419645

FWCI:

Cites: 18

Cited by:

Related to: 10