Abstract
Fundamental ways to reduce harmonics are: reduction
of resonances, damping of harmonics and compensation of
harmonics. Harmonic compensation is difficult to achieve, but can
reduce harmonics to zero. However, if a rest distortion is allowed,
harmonic compensation could be replaced for only harmonic
damping. Harmonic damping by a resistive harmonic behavior of
a power electronic converter of a dispersed generator (DG), is an
attractive way of harmonic reduction. This damping can have
effect on a total range of harmonics and cannot result in
instabilities in the power system. The damping can be provided as
an ancillary service of a power electronic converter in general.
The resistance is virtual, therefore the energy involved is limited
to losses in the converter. The effort to be taken, to implement this
kind of ancillary service, is an extension in the control system of
the converter, therefore costs can be kept minimal. There is
however a contradiction with the needed measure for background
harmonics, therefore harmonic reduction by damping must be
limited to avoid wrong compensation for background harmonics,
resulting in excessive currents through the distribution
transformer, cables and/or lines.
A combination with a series active filter on substation level, and
harmonic damping dispersed over the distribution network, can
avoid the wrong compensation for background harmonics, and be
therefore an optimal solution for harmonic mitigation.
| Original language | English |
|---|---|
| Title of host publication | 4th IEEE Benelux Young Researchers Symposium in Electrical Power Engineering, Eindhoven, The Netherlands, 7-8 February, 2008 |
| Editors | L. Encica, B.L.J. Gysen, J.W. Jansen, D.C.J. Krop |
| Place of Publication | Eindhoven |
| Publisher | Technische Universiteit Eindhoven |
| Pages | 1-6 |
| ISBN (Print) | 978-90-6144-986-7 |
| Publication status | Published - 2008 |