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Title: A review of active/reactive power control strategies for PV power plants under unbalanced grid faults
Authors: Dehghani Tafti, Hossein
Maswood, Ali Iftekhar
Lim, Ziyou
Ooi, Gabriel Heo Peng
Harikrishna Raj, Pinkymol
Keywords: Photovoltaic systems
Active power control
Reactive power control
NPC inverter
Unbalanced voltage sag
Fault ride-through capability
Issue Date: 2015
Source: Dehghani Tafti, H., Maswood, A. I., Lim, Z., Ooi, G. H. P., & Harikrishna Raj, P. (2015). A review of active/reactive power control strategies for PV power plants under unbalanced grid faults. 2015 IEEE Innovative Smart Grid Technologies - Asia (ISGT ASIA).
Conference: 2015 IEEE Innovative Smart Grid Technologies - Asia (ISGT ASIA)
Abstract: Fault ride through (FRT) capability is one of the challenges faced in the medium to high voltage large-scale grid-tied photovoltaic power plants (PVPPs). Besides that, due to the high penetration of installed distributed generation (DG) units, the grid voltage enhancement under unbalanced faults is a requirement of several standards and grid codes. The controller of the grid-connected inverter consists mainly of two parts: the selection of the reference active/reactive power and the calculation of the reference currents under faults. This paper reviews various strategies which are proposed in the reported literature for calculating the reference current as well as selecting the reference active/reactive power based on the grid voltage. The performances of these control strategies are investigated on the 150 kW NPC grid-connected multi-string PVPP, which is considered as the state of the art for medium power PVPPs. The PVPP is connected to the 12.47 kV medium voltage distribution system where different fault situations is simulated.
DOI: 10.1109/ISGT-Asia.2015.7387144
Schools: School of Electrical and Electronic Engineering 
Interdisciplinary Graduate School (IGS) 
Research Centres: Energy Research Institute @ NTU (ERI@N) 
Rights: © 2015 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. The published version is available at: [].
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Conference Papers
ERI@N Conference Papers

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