Based on the analysis on the contradiction between the
designing of thyristor controlled series
capacitor(TCSC) and static var compensator(SVC) in same circuitry, how to
coordinate control dynamic parallel capacitor compensation and series
capacitor compensation in power supply system of train's traction is studied. For
saving energy, an optimal control strategy about capabilitys of
compensations and a qualitative-quantify control way for dynamic parallel
capacitor compensation are advanced. The system can improve effectively the
rate and precision of compensating, and has a fine perfermance to change the
compensation when load changes, so it has great significance
for making over our electrization railway.