IEEE Power & Energy Magazine - March/April 2015 - 43

No Inverter
Left Behind

By Farid Katiraei,
Chase Sun, and
Babak Enayati

Protection,
Controls, and
Testing for High
Penetrations of
PV Inverters on
Distribution Systems
Digital Object Identifier 10.1109/MPE.2014.2380374
Date of publication: 24 February 2015

march/april 2015

T

IMAGES LICENSED BY INGRAM PUBLISHING

THE INCREASED PENETRATION OF DISTRIBUTED
energy resources (DERs) and interest in improved grid
reliability, power quality, and resiliency have changed
the characteristics of distribution systems. Inverter-based
renewable energy sources, such as photovoltaic (PV) plants,
are regarded as the fastest-growing and most crucial technologies in the proliferation of DERs on distribution systems. Many North American utilities have already begun
experiencing high penetration of distributed (rooftop) and
large-scale centralized PV systems on radial distribution
feeders. In many areas-especially between 11 a.m. and
2 p.m.-PV generation can surpass feeder loading, causing
reverse power flow and voltage rise toward the end of feeders. Bidirectional power flows, drastic changes in voltage
profiles, and events with fast dynamics are becoming more
common in today's distribution systems, bringing complex
planning and operational impacts. Understanding these
issues requires a deep knowledge of distribution system
dynamic behavior supported by detailed engineering studies
and sophisticated testing methods.

1540-7977/15©2015IEEE

ieee power & energy magazine

43



Table of Contents for the Digital Edition of IEEE Power & Energy Magazine - March/April 2015

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IEEE Power & Energy Magazine - March/April 2015 - Cover3
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