NDLI: Comprehensive study of power quality criteria generated by PV converters and their impacts on distribution transformers

Content Provider	IEEE Xplore Digital Library
Author	Hasanzadeh, A. Edrington, C.S. Bevis, T.
Copyright Year	2012
Description	Author affiliation: The Center for Advanced Power Systems, 2000 Levy Avenue, The Florida State University, Tallahassee, 32310, USA (Hasanzadeh, A.; Edrington, C.S.; Bevis, T.)
Abstract	This paper investigates the impact of power quality criteria required by photovoltaic (PV) converters on legacy system transformers and its design procedure, since it is often argued that the use of traditional design for transformers in the PV integrated power systems is acceptable. The criteria studied in this paper are voltage amplitude variation (flicker), harmonics, frequency variation, power factor (PF) variation, DC bias, thermal cycling (loading), transients, inrush current, eddy current, and stray loss. Some of these problems will be simulated with a Voltage Source Inverter (VSI) and Current Source Inverter (CSI) which are frequently used in PV integrated power systems as Distributer Generation (DG) by decentralized controlled PV inverters. In this type of power system configuration, transformers may be utilized for isolation and/or filtering or as a part of the feeder facility. On the other hand, if the transformerless PV inverters are used in PV systems, then only the distribution transformers will be affected by the PV converters power quality problems. These issues can reveal or change the allowable penetration level at a specific bus location along the feeder. Furthermore, output voltage of VSI and output current of CSI of PV systems have a faster dynamic response and more distorted output than legacy power system voltage and current outputs. This means that the VSI and CSI need stiff controllers to ensure a suitable power exchange to the utility network, particularly to sensitive equipment like transformers that are designed for legacy unidirectional power transformations with a cleaner voltage and current than that provided by PV inverter based systems.
Starting Page	5820
Ending Page	5826
File Size	753451
Page Count	7
File Format	PDF
ISBN	9781467324199
ISSN	1553572X
e-ISBN	9781467324212
e-ISBN	9781467324205
DOI	10.1109/IECON.2012.6389132
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-10-25
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Heating Complexity theory Inverters Magnetomechanical effects CSI PV inverter Transformer power quality issues VSI
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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