در فركانس هاي زير سنكرون و نقش آن در ميراكردن پديده تشديد زير سنكرون TCSC بررسي رفتار

In this paper, the performance of TCSC at suhsychronous frequencies has been evaluated by calculating its impedance-frequency characteristics, and it has been shown that the impedance is resistive-inductive at this frequency range. Then, it is illustrated that unlike fixed series compensation, TCSC inherently removes the risk of SSR phenomenon. Besides, appropriate control of TCSC can effectively damp the SSR oscillations in a network mainly compensated by fixed series capacitors. Analytical results are verified by digital simulation using PSCADIEMTDC software.