How to model a slack(swing) bus in simuilink model?

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As there is no slack bus element in simulink, how to device such a bus so that the voltage can be set, and the active and reactive power can change automatically according to different load conditions? My need to devise simple distribution systems which have five buses, they are all connecte in series. Four of them are connected with 4 identical loads, the first bus from electrical source should be a slack bus but I am confused that how to model it. Any suggestions are welcom.. Thank you.

Answers (1)

Nick Choi
Nick Choi on 17 Nov 2017
Edited: Nick Choi on 17 Nov 2017
The 'Load Flow Bus' block can be used to specify the parameters of a swing bus: https://www.mathworks.com/help/physmod/sps/powersys/ref/loadflowbus.html#bsumf1e-4
The following documentation page provides an example of how to use this block within a model of a 5-bus network:

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