Stable operation of PV plants to achieve fault ride through capability - Evaluation in field and laboratory tests

Author

Dotter, Gregor ; Ackermann, Florian ; Bihler, Nicolas ; Grab, Robin ; Rogalla, Soenke ; Singer, Robert

Author_Institution

Fraunhofer Inst. for Solar Energy Syst. ISE, Freiburg, Germany

fYear

2014

fDate

24-27 June 2014

Firstpage

1

Lastpage

8

Abstract

This paper first explains the required feed-in of voltage supporting currents during grid faults in a simplified case. Secondly, resonance points of the grid connection point are calculated analytically. The influence of weak grid conditions and large numbers of inverters is analysed. To underline the theoretical discussion on test conditions, measurements concerning Low Voltage Ride Through (LVRT) and stable operation of PV plants are presented. They comprise measurements from single inverters, as well as from large PV plants in the megawatt range.

Keywords

invertors; photovoltaic power systems; power generation faults; power grids; LVRT; PV plant operation stability; fault ride through capability; grid connection point; grid faults; inverters; low-voltage ride through; resonance point; weak grid condition; Area measurement; Containers; Impedance; Inverters; Fault Ride Through; LCL filter; PV plant; field and laboratory test; grid impedance; grid stability; measurement results; resonance point; voltage support;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics for Distributed Generation Systems (PEDG), 2014 IEEE 5th International Symposium on

Conference_Location

Galway

Type

conf

DOI

10.1109/PEDG.2014.6878642

Filename

6878642