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STATCOM Control for Operation with Unbalanced Voltages
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| Author(s) |
Bostjan Blazic, Igor Papic |
| Abstract |
In view of STATCOM operation analysis, special
attention must be paid to the operation with unbalanced
network voltages. In this paper a control algorithm that
enables STATCOM operation with unbalanced voltages is
presented. The algorithm is based on the compensator
mathematical model in the d-q coordinate system. In case of
an unbalanced voltage sag the compensator unbalances the
generated voltages to limit the negative sequence currents.
The problem of low-order harmonics generation is solved
with the use of appropriate switching function modulation
that enables the use of a relatively small capacitor on the dc
side. The proposed algorithm was tested by means of
simulation of STATCOM operation in the PSCAD program.
The algorithm shows a good transient response also in the
case of relatively deep voltage sags. |
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| Filename: | T11-202.pdf |
| Filesize: | 284.1 KB |
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| Type |
Members Only |
| Date |
Last modified 2007-03-12 by System |
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