Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

A Transient Voltage-based Approach for Mid-voltage Fault Detection through Low-voltage Sensors

Version 1 : Received: 18 March 2024 / Approved: 19 March 2024 / Online: 22 March 2024 (07:36:32 CET)

How to cite: ZHANG, M.; GUAN, X.; AI, X. A Transient Voltage-based Approach for Mid-voltage Fault Detection through Low-voltage Sensors. Preprints 2024, 2024031099. https://doi.org/10.20944/preprints202403.1099.v1 ZHANG, M.; GUAN, X.; AI, X. A Transient Voltage-based Approach for Mid-voltage Fault Detection through Low-voltage Sensors. Preprints 2024, 2024031099. https://doi.org/10.20944/preprints202403.1099.v1

Abstract

Single-phase-to-ground fault in non-effectively grounded systems poses serious public safety concern. Along with increasing deployment of low-voltage (LV) sensors, new opportunities and ways are created for solving this traditional problem in distribution systems. A new approach, identifying primary single-phase-to-ground line fault and locating it through measurement data from smart sensors deployed in the secondary side of distribution transformers, is proposed in this paper. When a fault occurs in primary distribution feeder, the transient aerial mode voltage (AMV) of each LV smart sensor is calculated. The fault line can be identified by an abrupt change value of AMV at LV side. Next, by finding the position of the maximum value of this AMV from LV sensors on the fault line, the fault location can be pinpointed to two neighboring distribution transformers. The proposed method has been proven to be efficient and reliable by simulation studies.

Keywords

LV sensor measurement; non-effectively grounded system; single-phase-to-ground fault; transient aerial mode voltage

Subject

Engineering, Electrical and Electronic Engineering

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