Impact of transmission line modeling aspects on TW-Based fault location studies

This paper analyzes the impacts of different transmission line (TL) modeling approaches in Electromagnetic Transients Programs (EMTP) during the evaluation of traveling wave (TW)-based fault location (TWFL) functions. Massive EMTP fault simulations are carried out to compare the performance of TWFL solutions when the system model considers Bergeron or JMarti models, accounting for homogeneous or heterogeneous soil characteristics, as well as ideal or real transposition schemes. Firstly, TWFL errors are presented in the form of scatter plots to compare the relative performance between four fault location solutions when different modeling approaches are taken into account. Then, the fault location absolute errors are presented as boxplots individually for each analyzed TWFL method and modeling approach, allowing to perform quantitative analysis of the obtained errors. From these results, the impacts of the evaluated modeling strategies on the assessed TWFL methods are addressed, highlighting the model features that can yield more challenging scenarios during the evaluation of TWFL solutions.

Automated summary

This study analyzes the impacts of different transmission line modeling approaches on the performance of TWFL solutions in EMTP, showing significant effects of modeling strategies on TWFL methods and highlighting model features that can create more challenging scenarios during TWFL evaluation.