Dynamic State Estimation based Transmission Line Protection Scheme: Performance Evaluation with Different Fault Types and Conditions
Journal article, 2023

This paper presents the experimental validation of a transmission line protection scheme based on dynamic state estimation for different fault types and conditions. The protection scheme utilizes real-time high-frequency sampled measurements from advanced sensors and evaluates the operating condition of the transmission line based on which a tripping signal is generated in case a fault occurs. The validation is performed using a physical scaled-down model of a power system, consisting of a transmission line, transformer, synchronous generator, and loads. The following faults are examined during the validation: unbalanced faults under different load conditions, high impedance fault, fault current fed from both ends, hidden failure, external fault, and load change conditions. The results show that the scheme performs as intended and thus proves its efficacy to detect various types of faults. The maximum fault detection time is calculated to be 42.5 milliseconds, while the maximum fault clearing time comes out to be 82.5 milliseconds, on par with currently employed protection methods. The obtained results demonstrate the ability of the scheme to detect different fault types under varying conditions and avoid potential issues with relay coordination

high impedance fault

hidden failures

Dynamic state estimation

setting-less protection

transmission line protection

experimental validation


Ankur Srivastava

Chalmers, Electrical Engineering, Electric Power Engineering

Anh Tuan Le

Chalmers, Electrical Engineering, Electric Power Engineering

David Steen

Chalmers, Electrical Engineering, Electric Power Engineering

Ola Carlson

Chalmers, Electrical Engineering, Electric Power Engineering

Dennis Bijwaard

Smart State Technology

Omar Mansour

Smart State Technology

International Journal of Electrical Power and Energy Systems

0142-0615 (ISSN)

Vol. 148 108994

Integrated cyber-physical solutions for intelligent distribution grid with high penetration of renewables (UNITED-GRID)

European Commission (EC) (EC/H2020/773717), 2017-11-01 -- 2020-04-30.


European Commission (EC) (EC/H2020/864048), 2019-11-01 -- 2023-04-30.

Areas of Advance


Subject Categories

Electrical Engineering, Electronic Engineering, Information Engineering



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