TY - GEN

T1 - Impact of Enhanced Synchronization Techniques of Wind Power Plants on the Short-Circuit Current

AU - Schäkel, Nils

AU - Neufeld, Alexander

AU - Hofmann, Lutz

N1 - Funding Information: The authors gratefully acknowledge funding by the German Federal Ministry of Education and Research (BMBF) within the Kopernikus Project ENSURE ‘New ENergy grid StructURes for the German Energiewende’.

PY - 2019/12/1

Y1 - 2019/12/1

N2 - Within this paper, the impact of enhanced synchronization techniques of wind power plants with full-scale converter on the short-circuit current is presented. The reaction of the full-scale converter with three different synchronization techniques are compared to each other. As reference the reaction of the model with a synchronous reference frame PLL for the synchronization is used. The reference scenario is compared firstly to the reaction of the model with the same synchronous reference frame PLL combined with a low-pass filter and secondly to the reaction of the model with a decoupled double synchronous reference frame PLL. During voltage drops, the reaction as a low-pass filter of the enhanced synchronization techniques leads to a significant transient response in settling with high currents. This is problematic for the short-circuit current calculation according to IEC 60909, which considers wind power plants with full-scale converter as a constant short-circuit current source.

AB - Within this paper, the impact of enhanced synchronization techniques of wind power plants with full-scale converter on the short-circuit current is presented. The reaction of the full-scale converter with three different synchronization techniques are compared to each other. As reference the reaction of the model with a synchronous reference frame PLL for the synchronization is used. The reference scenario is compared firstly to the reaction of the model with the same synchronous reference frame PLL combined with a low-pass filter and secondly to the reaction of the model with a decoupled double synchronous reference frame PLL. During voltage drops, the reaction as a low-pass filter of the enhanced synchronization techniques leads to a significant transient response in settling with high currents. This is problematic for the short-circuit current calculation according to IEC 60909, which considers wind power plants with full-scale converter as a constant short-circuit current source.

KW - decoupled double synchronous reference frame

KW - Fault ride through (FRT)

KW - full-scale converter

KW - grid-connected converter

KW - low-pass filter

KW - low-pass filters

KW - phase locked loop (PLL)

KW - phase locked loops

KW - power engineering computing

KW - power grids

KW - short-circuit current calculation

KW - short-circuit current source

KW - short-circuit currents

KW - synchronisation

KW - synchronization techniques

KW - synchronous reference frame

KW - wind power plants

UR - http://www.scopus.com/inward/record.url?scp=85081078993&partnerID=8YFLogxK

U2 - 10.1109/appeec45492.2019.8994723

DO - 10.1109/appeec45492.2019.8994723

M3 - Conference contribution

SN - 978-1-7281-0814-8

SP - 1

EP - 5

BT - 2019 IEEE PES Asia-Pacific Power and Energy Engineering Conference, APPEEC 2019

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 2019 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC)

Y2 - 1 December 2019 through 4 December 2019

ER -