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A robust control scheme to enhance the stability of a grid-connected large scale photovoltaic system

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Authors
Islam, G.
Al-Durra, A.
Muyeen, S.M.
Tamura, J.
Date
2012
Type
Conference Paper

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Islam, G. and Al-Durra, A. and Muyeen, S.M. and Tamura, J. 2012. A robust control scheme to enhance the stability of a grid-connected large scale photovoltaic system, in Proceedings of the Transmission and Distribution Conference and Exposition (T&D), May 7-10 2012. Orlando, Florida: IEEE.
Source Title
Proceedings of the IEEE Power Engineering Society Transmission and Distribution Conference
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Department of Electrical and Computer Engineering
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© 2012 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

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Abstract

This paper presents a new robust control strategy to improve the steady-state and transient stabilities of a grid connected large scale photovoltaic (PV) system. The grid codes for PV system to provide dynamic grid support are getting stricter due to the substantial increase in the power generation from grid connected PV systems, in recent years. The proposed control scheme helps quick voltage recovery against different types of symmetrical and unsymmetrical faults and ensures a good DC link overvoltage protection. Detailed modeling for individual components of a grid connected large scale PV system are carried out using PSCAD/EMTDC to analyze the performance of the proposed strategy.