NDLI: Testing of anti-islanding protections for grid-connected inverters

Content Provider	IEEE Xplore Digital Library
Author	Groppi, F.
Copyright Year	2007
Description	Author affiliation: CESI RICERCA, Piacenza (Groppi, F.)
Abstract	Nowadays, almost all photovoltaic and grid-connected inverters, have internal protections against islanding. Usually, these protections perform a disconnection from the grid when process variables go beyond over-voltage or under-voltage thresholds, as well as over-frequency or under-frequency thresholds. Furthermore, other schemes are often added in commercial equipment. In spite of the importance of anti-islanding protections, it is not easy to test on field thresholds, reliability and performances of these devices. CESI RICERCA undertook the study and the development of a system that simulates a grid whose parameters may vary in a suitable way to cause the protections trip and to display results. From this activity a first prototype has been assembled. The testing system may verify the four main thresholds of anti-islanding protections (under-voltage, over-voltage, under-frequency and over-frequency) and their operation times. Furthermore, a suitable methodology is used to assess and measure parameters of the rate of frequency change protection.
Starting Page	183
Ending Page	187
File Size	364677
Page Count	5
File Format	PDF
ISBN	1424406315
DOI	10.1109/ICCEP.2007.384209
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-05-21
Publisher Place	Itlay
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Photovoltaic systems Performance evaluation System testing grid-loss protections Main-loss protections Displays Anti-islanding protections Inverters Frequency measurement Solar power generation Unintentional islanding Prototypes Protection Assembly
Content Type	Text
Resource Type	Article

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