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**Harvard**

Einarsson, E. och Wickbom, B. (2004) *Load modelling for steady-state and transient analysis of low voltage dc systems*. Göteborg : Chalmers University of Technology

** BibTeX **

@mastersthesis{

Einarsson2004,

author={Einarsson, Einar Pálmi and Wickbom, Bengt-Olof},

title={Load modelling for steady-state and transient analysis of low voltage dc systems},

abstract={In this thesis, common loads used in low-voltage residential and commercial power
systems are investigated when supplied with dc. There steady-state and transient
behavior is characterized, in order to build simple models suitable for computer
simulation with PSCAD/EMTDC.
Laboratory measurements were carried out on various loads that were categorized in
resistive, rotating and electronic loads. From these measurements it was possible to
characterize the steady-state behavior of loads. To indicate how much the load disturbs
the network, the frequency spectrum was analyzed. To be able to analyze the transient
response of the loads, a voltage reduction circuit was designed and constructed. The
loads were subjected to several voltage steps in order to derive a simple dynamic model.
Another objective of this work was to study the load sensitivity to voltage variations, in
particular voltage dips, with dc supply and then compare the result to the same voltage
variation in ac.
The models developed in this thesis can be used for load flow, voltage dip and short
circuit current calculations in a low voltage dc distribution system.
},

publisher={Institutionen för elteknik, Chalmers tekniska högskola},

place={Göteborg},

year={2004},

keywords={Load modeling, low-voltage power dist system, direct current (dc), voltage dip (sag), load tolerance, domestic appliances, electro magnetic trans simulation},

note={201},

}

** RefWorks **

RT Generic

SR Electronic

ID 174360

A1 Einarsson, Einar Pálmi

A1 Wickbom, Bengt-Olof

T1 Load modelling for steady-state and transient analysis of low voltage dc systems

YR 2004

AB In this thesis, common loads used in low-voltage residential and commercial power
systems are investigated when supplied with dc. There steady-state and transient
behavior is characterized, in order to build simple models suitable for computer
simulation with PSCAD/EMTDC.
Laboratory measurements were carried out on various loads that were categorized in
resistive, rotating and electronic loads. From these measurements it was possible to
characterize the steady-state behavior of loads. To indicate how much the load disturbs
the network, the frequency spectrum was analyzed. To be able to analyze the transient
response of the loads, a voltage reduction circuit was designed and constructed. The
loads were subjected to several voltage steps in order to derive a simple dynamic model.
Another objective of this work was to study the load sensitivity to voltage variations, in
particular voltage dips, with dc supply and then compare the result to the same voltage
variation in ac.
The models developed in this thesis can be used for load flow, voltage dip and short
circuit current calculations in a low voltage dc distribution system.

PB Institutionen för elteknik, Chalmers tekniska högskola,PB Institutionen för elteknik, Chalmers tekniska högskola,

LA eng

LK http://publications.lib.chalmers.se/records/fulltext/174360/174360.pdf

OL 30