Impact of reactive power compensation equipment on the harmonic impedance of high voltage networks

The design of reactive power compensation capacitor banks is evaluated on the basis of harmonic measurements, harmonic analysis in the high voltage network and transient studies. Two designs of mechanical switched capacitor banks, based on a simple capacitor design with turn-on reactor and a C-type filter with harmonic damping network are considered for 6 locations in the TenneT 380 kV and 220 kV networks, totaling 1500 Mvar of capacitor banks. Based on these studies the design and specifications of ten banks were finalized. This work summarizes the results of this evaluation, design and analysis studies.