Dynamic active power control with improved undead-band droop for HVDC grids

Author

Vrana, T.K. ; Zeni, Luigi ; Fosso, O.B.

Author_Institution

NTNU, Trondheim, Norway

fYear

2012

fDate

4-5 Dec. 2012

Firstpage

1

Lastpage

6

Abstract

The earlier developed control method using a piecewise linear droop curve, with different droop values for the different segments, has now been optimised for dynamic performance. Non-linearities at the junctions of two linear droop sections have been adressed. Also non-linearity of power based DC voltage control has been adressed. Dynamic instability due to high control gains has been treated and a new improved control structure has been proposed. The concepts have been validated with RMS simulation with the DIgSILENT PowerFactory software on the CIGRE B4 DC grid test system.

Keywords

HVDC power transmission; control nonlinearities; piecewise linear techniques; power control; power grids; power system stability; power transmission control; CIGRE B4 DC grid test system; DIgSILENT PowerFactory software; HVDC grids; RMS simulation; control structure; droop values; dynamic active power control; dynamic instability; dynamic performance; high control gains; linear droop sections; piecewise linear droop curve; power-based DC voltage control nonlinearity; undead-band droop; Active Power Control; Droop Control; HVDC; Meshed DC Grid; Power Converter;

fLanguage

English

Publisher

iet

Conference_Titel

AC and DC Power Transmission (ACDC 2012), 10th IET International Conference on

Conference_Location

Birmingham

Electronic_ISBN

978-1-84919-700-7

Type

conf

DOI

10.1049/cp.2012.1975

Filename

6521274