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Distributed generation with voltage control capability in the low voltage network

Sulla, Francesco LU ; Björnstedt, Johan LU and Samuelsson, Olof LU (2010) International Conference on Renewable Energies and Power Quality (ICREPQ'10)
Abstract (Swedish)
Abstract in Undetermined

Small-scale distributed generators connected to

the low voltage network are generally operated with unity

power factor. However, controlling their reactive power

injection would have an impact on the voltage at their

connection point, if the network is sufficiently weak and

inductive. The purpose of this paper is to investigate how a

small-scale distributed generator connected to a low voltage

network through a power electronic converter can be controlled

to improve the voltage quality at its connection point.

The possibility to control the voltage at a point in the low

voltage network by reactive power... (More)
Abstract in Undetermined

Small-scale distributed generators connected to

the low voltage network are generally operated with unity

power factor. However, controlling their reactive power

injection would have an impact on the voltage at their

connection point, if the network is sufficiently weak and

inductive. The purpose of this paper is to investigate how a

small-scale distributed generator connected to a low voltage

network through a power electronic converter can be controlled

to improve the voltage quality at its connection point.

The possibility to control the voltage at a point in the low

voltage network by reactive power injection is limited by two

factors, the small rating of the distributed generator compared

to the short-circuit power at its connection point and the

resistive nature of the low voltage cables. Here, a scheme for

inductively decoupling the distributed generator connection

point from the network is proposed and evaluated. For this

purpose, an inductance is placed between the network and the

generator, allowing voltage regulation by reactive power

injection.

Simulation results and lab measurements show that the

proposed scheme improves the voltage quality at the

microturbine connection point. (Less)
Please use this url to cite or link to this publication:
author
organization
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Contribution to conference
publication status
published
subject
conference name
International Conference on Renewable Energies and Power Quality (ICREPQ'10)
language
English
LU publication?
yes
id
43df13b4-65e3-4831-ba0c-9d81e907ade3 (old id 2535664)
alternative location
http://www.icrepq.com/icrepq'10/288-Sulla.pdf
date added to LUP
2012-05-08 13:17:59
date last changed
2016-04-16 12:46:14
@misc{43df13b4-65e3-4831-ba0c-9d81e907ade3,
  abstract     = {<b>Abstract in Undetermined</b><br/><br>
Small-scale distributed generators connected to<br/><br>
the low voltage network are generally operated with unity<br/><br>
power factor. However, controlling their reactive power<br/><br>
injection would have an impact on the voltage at their<br/><br>
connection point, if the network is sufficiently weak and<br/><br>
inductive. The purpose of this paper is to investigate how a<br/><br>
small-scale distributed generator connected to a low voltage<br/><br>
network through a power electronic converter can be controlled<br/><br>
to improve the voltage quality at its connection point.<br/><br>
The possibility to control the voltage at a point in the low<br/><br>
voltage network by reactive power injection is limited by two<br/><br>
factors, the small rating of the distributed generator compared<br/><br>
to the short-circuit power at its connection point and the<br/><br>
resistive nature of the low voltage cables. Here, a scheme for<br/><br>
inductively decoupling the distributed generator connection<br/><br>
point from the network is proposed and evaluated. For this<br/><br>
purpose, an inductance is placed between the network and the<br/><br>
generator, allowing voltage regulation by reactive power<br/><br>
injection.<br/><br>
Simulation results and lab measurements show that the<br/><br>
proposed scheme improves the voltage quality at the<br/><br>
microturbine connection point.},
  author       = {Sulla, Francesco and Björnstedt, Johan and Samuelsson, Olof},
  language     = {eng},
  title        = {Distributed generation with voltage control capability in the low voltage network},
  year         = {2010},
}