Reactive Power Flow Control for PV Inverters Voltage Support in LV Distribution Networks

This paper proposes a reactive power flow control pursuing the active integration of photovoltaic systems in LV distribution networks. An alternative power flow analysis is performed according to the specific characteristics of LV networks, such as high resistance/reactance ratio and radial topologi...

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on smart grid 2017-01, Vol.8 (1), p.447-456
Main Authors: Molina-Garcia, Angel, Mastromauro, Rosa A., Garcia-Sanchez, Tania, Pugliese, Sante, Liserre, Marco, Stasi, Silvio
Format: Article
Language:English
Subjects:
Active control
Disruption
Electric potential
Electric power distribution
Electric power systems
Flow control
High resistance
Inverters
Load flow
Low voltage
LV radial networks
Network topology
Networks
Photovoltaic cells
photovoltaic systems
Power converters
Power flow
Reactance
Reactive power
Reactive power control
Topology
Voltage
Voltage control
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This paper proposes a reactive power flow control pursuing the active integration of photovoltaic systems in LV distribution networks. An alternative power flow analysis is performed according to the specific characteristics of LV networks, such as high resistance/reactance ratio and radial topologies. The proposed solution gives high performances, in terms of rms-voltage regulation, by estimating the reactive power reference on each node considering the influence of the rest of the nodes in terms of active and reactive power demanded/generated by them. The local control of each photovoltaic system is based on the power converter control, interfacing these units with the grid and the loads respectively. The local control is designed on the basis of locally measured feedback variables. Photovoltaic units thus guarantee universal operation, being able to change between islanding-mode and grid-connected mode without disrupting critical loads connected to them, and allowing smooth transitions. Exhaustive results are also included and discussed in this paper.
ISSN:1949-3053
1949-3061
DOI:10.1109/TSG.2016.2625314