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Assessment of fault location techniques in voltage source converter based HVDC systems

Peng, Tzu-Chieh and Tzelepis, Dimitrios and Dyśko, Adam and Glesk, Ivan (2017) Assessment of fault location techniques in voltage source converter based HVDC systems. In: 2017 IEEE Texas Power and Energy Conference (TPEC). IEEE, Piscataway, pp. 1-6. ISBN 978-1-5090-6618-6

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Abstract

This paper investigates fault location techniques in high voltage direct current (HVDC) transmission networks utilizing voltage source converters (VSCs). The subject has been extensively researched due to the fault locating actions associated with the supply restoration and the economic loss, and also because of the trending employment of VSC-HVDC transmission systems. However, the fast operation of HVDC protection has made fault localization more challenging as limited measurement data can be extracted. By broadly researching the existing fault locating approaches in such systems, a comprehensive literature review is presented. Then, two selected methods, active impedance method and travelling wave method (using Continuous Wavelet Transformation) are tested. These fault location techniques together with the power system models have been developed using Matlab/Simulink. The results are summarized and systematic comparative analysis of the two fault location techniques is performed.