直列コンデンサのオンオフ離散制御による系統安定度向上

抄録

Application of controlled series capacitors with antiparallel thyristor combination across the capacitor segment is one of new and promising countermeasures for enhancement of power system stability. The line reactance can be directly controlled by the controlled series capacitors, hence, it is very effective to apply the capacitors for damping power system disturbances.
In this paper, we describe the following.
(1) The design method of control system for the segmented series capacitors with thyristor switches is proposed.
(2)The effectiveness of the controlled capacitors proposed for power system stabilization is shown with the results of EMTP analysis.
(3) The possibilty of zero passing missing phenomena of capacitor voltage is indicated by EMTP simulation, and a countermeasure is proposed in order to avoid the phenomena. The effects of the countermeasure is indicated by the results of EMTP simulation.