TY - GEN

T1 - Improvement of the Consideration of Short-Circuit Current Contributions from Doubly-Fed Induction Generator Based Wind Turbines For Short-Circuit Current Calculation According to IEC 60909

AU - Lager, Thomas

AU - Hofmann, Lutz

N1 - Publisher Copyright: © 2019 IEEE. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.

PY - 2019/6/1

Y1 - 2019/6/1

N2 - In this paper an improved approach to consider the contribution of wind turbines based on doubly fed induction generators (DFIGs) for short-circuit current calculation according to IEC 60909 for a three-phase short-circuit is presented. The calculation with the equivalent voltage source at the fault location requires a simplified modelling of short-circuit contributions through impedances or current sources, whereas specific control algorithms cannot be considered. Additionally these impedances or current sources must be calculated with basic and publicly available machine parameters. The improved approach is based on equivalent circuit elements, derived from eigenvalue analyses meets the aforementioned requirements and is compared to a detailed numerical simulation model, which shows the influence of the dynamic control structure. The improved approach delivers a good estimation for the calculation of the maximum initial short-circuit current in each case. Finally, a suggestion for the consideration of DFIG, based on the improved approach is made.

AB - In this paper an improved approach to consider the contribution of wind turbines based on doubly fed induction generators (DFIGs) for short-circuit current calculation according to IEC 60909 for a three-phase short-circuit is presented. The calculation with the equivalent voltage source at the fault location requires a simplified modelling of short-circuit contributions through impedances or current sources, whereas specific control algorithms cannot be considered. Additionally these impedances or current sources must be calculated with basic and publicly available machine parameters. The improved approach is based on equivalent circuit elements, derived from eigenvalue analyses meets the aforementioned requirements and is compared to a detailed numerical simulation model, which shows the influence of the dynamic control structure. The improved approach delivers a good estimation for the calculation of the maximum initial short-circuit current in each case. Finally, a suggestion for the consideration of DFIG, based on the improved approach is made.

KW - asynchronous generators

KW - eigenvalues and eigenfunctions

KW - electric impedance

KW - equivalent circuits

KW - fault location

KW - power generation control

KW - short-circuit currents

KW - wind turbines

KW - short-circuit current contributions

KW - doubly-fed induction generator

KW - short-circuit current calculation

KW - IEC 60909

KW - equivalent voltage source

KW - current sources

KW - dynamic control structure

KW - numerical simulation model

KW - eigenvalue analyses

KW - impedance

KW - three-phase short-circuit

KW - DFIG

KW - Analytical approach

KW - doubly fed induction generator

KW - short-circuit current

KW - wind turbine

KW - Wind turbine

KW - Short-circuit current

KW - Doubly fed induction generator

UR - http://www.scopus.com/inward/record.url?scp=85072324125&partnerID=8YFLogxK

U2 - 10.1109/ptc.2019.8810607

DO - 10.1109/ptc.2019.8810607

M3 - Conference contribution

SN - 978-1-5386-4723-3

SP - 1

EP - 6

BT - 2019 IEEE Milan PowerTech

ER -