Power quality analysis of a static synchronous compensator (STATCOM) connected to a high voltage transmission network

This paper analyses the voltage harmonic content at the Point of Common Coupling (PCC) and at the Voltage Source Converter (VSC) output in a STATCOM application by using a calculation tool, also discussed in the paper. Subsequently, a parameter sensitivity analysis is carried out taking into account the variation of key parameters such as the line length, the shunt transformer impedance, the capacitor bank connection and the effect of a given filter, for instance a LC type filter. The harmonic content at the (PCC) obtained when 24 and quasi 48 pulse modulation techniques are used, is calculated and subsequently compared against the stringent Spanish power quality legislation.

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