@inproceedings{2279862dadee4345a9287939da51f10d,
title = "Digital Ground Fault Protection of Grid-Connected Photovoltaic Systems",
abstract = "The growing interests in utilizing Photovoltaic (PV) systems are usually faced with challenges of accurate and reliable protection of these distributed generation units. A desired protection of PV systems has to effectively and accurately detect and respond to internal faults (within the PV system) and external faults (in the host grid and/or fed loads). This paper presents and tests the performance of a digital ground fault protection (DGFP) for grid-connected PV systems. The presented DGFP detects faults based on the energy contents of high frequency sub-bands of the ground current. These energy contents are extracted using the phaselet transform that can process signals with non-stationary variations in their phases. Energy contents of the high frequency sub-bands can provide accurate, fast, and reliable detection and identification of faults experienced by a PV system operated. The phaselet-transform (PHT)-based DGFP is implemented for performance testing using PV systems that are operated in the grid-connected mode, and subjected to various fault and non-fault events. Performance results demonstrate accurate, fast, and reliable detection and response to different types of fault and non-fault events. Response features of the PHT-based DGFP are complimented with minor sensitivity to the level of power production and/or type and location of faults.",
keywords = "digital filter banks, digital protection, Grid-connected photovoltaic systems, ground current, phaselet transform, photovoltaic system faults, photovoltaic system protection",
author = "Saleh, {S. A.} and A. Al-Durra and S. Kanukollu",
note = "Publisher Copyright: {\textcopyright} 2023 IEEE.; 59th IEEE/IAS Industrial and Commercial Power Systems Technical Conference, I and CPS 2023 ; Conference date: 21-05-2023 Through 25-05-2023",
year = "2023",
doi = "10.1109/ICPS57144.2023.10142086",
language = "British English",
series = "Conference Record - Industrial and Commercial Power Systems Technical Conference",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
booktitle = "2023 IEEE/IAS 59th Industrial and Commercial Power Systems Technical Conference, I and CPS 2023",
address = "United States",
}