Investigation on interactions between AC and DC grids

Author

Rault, Pierre ; GUILLAUD, XAVIER ; Colas, Francis ; Nguefeu, Samuel

Author_Institution

L2EP, Ecole Centrale of Lille, Lille, France

fYear

2013

fDate

16-20 June 2013

Firstpage

1

Lastpage

6

Abstract

In this paper, interactions between AC and DC systems are investigated with theoretical proof. Results are assessed by modal analysis, using participation factor to retrieve the eigenvalues origin among system states. A simple system is studied to present basics of AC/DC interaction studies. Such an example allows an in depth analysis, a very helpful step for understanding more complex systems. Observations were confirmed by time domain simulations comparison with EMT models. The DC part is a Multi-terminal HVDC grid controlled by the voltage droop method. Finally, a case with grid side Voltage Source Converters participating to the primary frequency control is considered.

Keywords

AC-DC power convertors; HVDC power convertors; eigenvalues and eigenfunctions; frequency control; offshore installations; power generation control; power grids; wind power plants; AC grids; AC-DC interaction; DC grids; EMT models; complex systems; eigenvalues; frequency control; grid side voltage source converters; modal analysis; multiterminal HVDC grid; offshore wind farms; time domain simulations; voltage droop method; Eigenvalues and eigenfunctions; Frequency control; Modal analysis; Phase locked loops; Power conversion; Voltage control; AC-DC interactions; Modal analysis; MultiTerminal DC (MTDC); Offshore Wind Farm; Primary frequency control;

fLanguage

English

Publisher

ieee

Conference_Titel

PowerTech (POWERTECH), 2013 IEEE Grenoble

Conference_Location

Grenoble

Type

conf

DOI

10.1109/PTC.2013.6652229

Filename

6652229