NDLI: Helping all generations of photo-voltaic inverters ride-through voltage sags

Content Provider	IET Digital Library
Author	Pérez, Javier Roldán Cerrada, Aurelio García Macho, Juan Luis Zamora Giménez, Miguel Ochoa
Abstract	The late Spanish grid code established that, to avoid island operation, renewable power sources have to be disconnected from the grid in the case of a voltage sag. This would threaten the system stability in case of massive penetration of renewable sources and motivated a recent revision of the code. The new code establishes strict ratios between active and reactive currents during the sag and requests that the plant must quickly resume its normal operation, when the voltage sag ends. Existing installations are also affected if they want to enjoy the premiums associated with renewable generation. When full upgrading of existing installations is not practical, this study proposes a plug-in shunt-connected power electronics device to help solar plants comply with the new grid code, without modifying the solar inverters. The device and its control algorithm are explained in this study and experimental results using photo-voltaic inverters without low-voltage ride-through capability are presented. Solar inverters remain unaware of the voltage sag and they can be led quickly and smoothly back into the grid when the sag is over.
Starting Page	2555
Ending Page	2563
Page Count	9
ISSN	17554535
Volume Number	7
e-ISSN	17554543
Issue Number	Issue 10, Oct (2014)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-pel/7/10
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-pel.2013.0552
Journal	IET Power Electronics
Publisher Date	2014-06-03
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Active Current Control of Electric Power System Harmonics Invertors Island Operation Photovoltaic Inverter Ride-through Voltage Sags Photovoltaic Power System Plug-in Shunt-connected Power Electronic Device Power Generation Control Power Supply Quality Reactive Current Renewable Generation Renewable Power Source Renewable Source Solar Inverter Solar Plant Solar Power Stations Spanish Grid Code System Stability Voltage Sag
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
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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6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
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9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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