Application of Anti-Voltage Sag Technology and Traveling Wave Fault Location in Oilfield Power Grids

Lu Jia

doi:10.54097/839h0346

Authors

Lu Jia

DOI:

https://doi.org/10.54097/839h0346

Keywords:

Anti-voltage sag technology; raveling wave fault location; oilfield distribution network; transmission and distribution line fault analysis.

Abstract

With the expansion of power system scales and increasing load complexity, voltage sags ("flicker") and line faults pose severe challenges to industrial production and grid security. Anti-voltage sag technology effectively mitigates equipment shutdowns caused by voltage fluctuations through core measures such as contactor delayed release protection and UPS/DC-BANK systems, ensuring power supply reliability in continuous production scenarios like oilfields. Traveling wave fault location technology leverages the high-frequency transient characteristics of fault-induced traveling waves to achieve rapid and precise fault localization in transmission and distribution lines, significantly reducing fault diagnosis time. This paper systematically analyzes the principles and typical applications of these two technologies: anti-voltage sag technology reduces unplanned downtime risks in oilfield distribution networks through multi-level protections (e.g., low-voltage motor retrofitting, high-voltage equipment delayed tripping, and system-level fast bus transfer devices); traveling wave fault location combines dual-terminal methods, wavelet transforms, and intelligent algorithms to achieve sub-1% localization errors in complex scenarios such as HVDC lines and multi-branch cable networks. Research demonstrates that these technologies enhance grid resilience from "prevention to recovery" perspectives. Future advancements in intelligent coordination (e.g., digital twins and edge computing) could further optimize the efficiency of power system fault management, providing critical technical support for smart grid development.

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