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Title: Solar Photovoltaic DC Systems: Basics and Safety: Preprint

Abstract

Solar Photovoltaic (PV) systems are common and growing with 42.4 GW installed capacity in U.S. (almost 15 GW added in 2016). This paper will help electrical workers, and emergency responders understand the basic operating principles and hazards of PV DC arrays. We briefly discuss the following aspects of solar photovoltaic (PV) DC systems: the effects of solar radiation and temperature on output power; PV module testing standards; common system configurations; a simple PV array sizing example; NEC guidelines and other safety features; DC array commissioning, periodic maintenance and testing; arc-flash hazard potential; how electrical workers and emergency responders can and do work safely around PV arrays; do moonlight and artificial lighting pose a real danger; typical safe operating procedures; and other potential DC-system hazards to be aware of. We also present some statistics on PV DC array electrical incidents and injuries. Safe PV array operation is possible with a good understanding of PV DC arrays basics and having good safe operating procedures in place.

Authors:
 [1];  [1];  [2]
  1. National Renewable Energy Laboratory (NREL), Golden, CO (United States)
  2. Lawrence Livermore National Laboratory - retired
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
Clean Energy States Alliance (CESA)
OSTI Identifier:
1432187
Report Number(s):
NREL/CP-5B00-68696
DOE Contract Number:  
AC36-08GO28308
Resource Type:
Conference
Resource Relation:
Conference: Presented at the IEEE Electrical Safety Workshop, 20-23 March 2018, Fort Worth, Texas
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; solar; photovoltaics; DC; safety

Citation Formats

McNutt, Peter F, Sekulic, William R, and Dreifuerst, Gary. Solar Photovoltaic DC Systems: Basics and Safety: Preprint. United States: N. p., 2018. Web.
McNutt, Peter F, Sekulic, William R, & Dreifuerst, Gary. Solar Photovoltaic DC Systems: Basics and Safety: Preprint. United States.
McNutt, Peter F, Sekulic, William R, and Dreifuerst, Gary. Mon . "Solar Photovoltaic DC Systems: Basics and Safety: Preprint". United States. doi:. https://www.osti.gov/servlets/purl/1432187.
@article{osti_1432187,
title = {Solar Photovoltaic DC Systems: Basics and Safety: Preprint},
author = {McNutt, Peter F and Sekulic, William R and Dreifuerst, Gary},
abstractNote = {Solar Photovoltaic (PV) systems are common and growing with 42.4 GW installed capacity in U.S. (almost 15 GW added in 2016). This paper will help electrical workers, and emergency responders understand the basic operating principles and hazards of PV DC arrays. We briefly discuss the following aspects of solar photovoltaic (PV) DC systems: the effects of solar radiation and temperature on output power; PV module testing standards; common system configurations; a simple PV array sizing example; NEC guidelines and other safety features; DC array commissioning, periodic maintenance and testing; arc-flash hazard potential; how electrical workers and emergency responders can and do work safely around PV arrays; do moonlight and artificial lighting pose a real danger; typical safe operating procedures; and other potential DC-system hazards to be aware of. We also present some statistics on PV DC array electrical incidents and injuries. Safe PV array operation is possible with a good understanding of PV DC arrays basics and having good safe operating procedures in place.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Apr 02 00:00:00 EDT 2018},
month = {Mon Apr 02 00:00:00 EDT 2018}
}

Conference:
Other availability
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