DIgSILENT
PowerFactory
Application Example
Wind Farm
Short-Circuit Calculation
1 Description
In this part of the Wind Farm example the short-circuit calculation is presented. As the
standard IEC 60909 does not reflect modern wind turbines, the DIgSILENT Complete Method
is used for calculating the short-circuit contribution of the turbines and the quantities of Ik’’,
Ib, Ith etc. which express the stress on the grid elements.
The settings of the Complete Method for the short-circuit calculation are close to IEC 60909
(c = 1.1 for max. short-circuit currents; loads, capacitances of lines, magnetizing currents of
transformers, shunt elements and filters are ignored in the positive sequence), while taking
the short-circuit contribution of the wind turbines into account correctly. For this reason a
current iteration is used in the Complete Method to calculate the transient short-circuit
current Ik’. In this current iteration the additional reactive currents provided by the wind
turbines are taken into account precisely, based on the k factor setting and max. current of
each turbines/converters. Ib and Ith are calculated on the basis of Ik’’ and Ik’.
To execute the short-circuit calculation, press the Calculate Short-Circuit button.
2 PowerFactory Project Information
Name of Project: Wind Farm
Name of Study Case: 02 Short-Circuit
Wind Farm - Short-Circuit Calculation 1
DIgSILENT GmbH
Heinrich-Hertz-Strasse 9
D-72810 Gomaringen
Tel.: +49 7072 9168 - 0
Fax: +49 7072 9168 - 88
http://www.digsilent.de
e-mail: mail@digsilent.de
Wind Farm - Short-Circuit Calculation
Published by
DIgSILENT GmbH, Germany
Copyright 2013. All rights
reserved. Unauthorised copying
or publishing of this or any part
of this document is prohibited.
Doc. Rev. No. 1,
05 Februar 2013
Wind Farm - Short-Circuit Calculation 2
