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

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

Novel Fault Location in MTDC Grids With Non-Homogeneous Transmission Lines Utilizing Distributed Current Sensing Technology

“…The line lengths of each HTM segment can be seen in Table II. The parameters used in modelling of the OHLs and UGCs can be found in Table III [14]. A network of distributed current optical sensors is installed on all HTMs.…”

Voltage and Current Measuring Technologies for High Voltage Direct Current Supergrids: A Technology Review Identifying the Options for Protection, Fault Location and Automation Applications

“…This paper mainly focuses on reviewing the available technologies from the perspective of enabling protection, fault location and automation applications in HVDC systems. Even though some relevant review on protection and fault location functions has been conducted in [11]- [13], the work did not provide any profound insight with respect to the element of measuring technologies towards achieving the desired characteristics of those functions.…”

Método para detecção e localização de faltas em linhas VSC-HVDC de sistemas multiterminais

“…Em [18] mostra-se uma comparação entre a localização de faltas com ondas viajantes e um método baseado em impedância "ativa" em um sistema de dois terminais baseado em conversores fonte de tensão. Para o caso de ondas viajantes, os autores utilizam tanto o método de um terminal quanto o método de dois terminais, sendo que a detecção é feita por meio da transformada wavelet contínua.…”