Dynamic voltage support of the transmission network from distribution level

This paper shows that providing dynamic voltage regulation with a few smaller size distribution level static VAr systems (SVSs) has more advantages than a large lumped SVSs on transmission level. The benefits obtained from distributed, distribution voltage support scheme are quantified. The feasibility and reliability of distributed voltage support scheme with SVSs based on STATCOMs are demonstrated by detailed dynamic simulation. The simulation is performed by Hypersim, a real time simulator and software developed by Hydro-Quebec research institute