Passive oscillator based protection scheme for faults within utility-scale photovoltaic arrays

Khaled A. Saleh, Ehab F. El-Saadany, Ali Hooshyar

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Undetected faults within photovoltaic (PV) arrays can result in permanent power loss and major catastrophic failures. This paper proposes a passive oscillator based protection scheme that detects and classifies string-to-ground, string-to-string, and open-circuit faults in utility-scale PV arrays. A passive oscillator that consists of an inductor and a capacitor is placed on each string. A real-time discrete wavelet transform (DWT) is used to detect the voltage transients generated by the oscillator in less than 3 ms. Some salient features of this method include its capability to distinguish between fault and partial shading conditions, and its independence from meteorological data. The performance of the proposed approach is assessed on a utility-scale grounded PV arrays under various conditions. The results verify the scheme's sensitivity, selectivity, and high speed.

Original languageBritish English
Title of host publication2017 IEEE Power and Energy Society General Meeting, PESGM 2017
PublisherIEEE Computer Society
Pages1-5
Number of pages5
ISBN (Electronic)9781538622124
DOIs
StatePublished - 29 Jan 2018
Event2017 IEEE Power and Energy Society General Meeting, PESGM 2017 - Chicago, United States
Duration: 16 Jul 201720 Jul 2017

Publication series

NameIEEE Power and Energy Society General Meeting
Volume2018-January
ISSN (Print)1944-9925
ISSN (Electronic)1944-9933

Conference

Conference2017 IEEE Power and Energy Society General Meeting, PESGM 2017
Country/TerritoryUnited States
CityChicago
Period16/07/1720/07/17

Fingerprint

Dive into the research topics of 'Passive oscillator based protection scheme for faults within utility-scale photovoltaic arrays'. Together they form a unique fingerprint.

Cite this