Eigen Value Analysis for Sub Synchronous Resonance Mitigation in Transmission Lines

Abstract

Series compensation for transmission line is vital as it increases the electricity switch
capability of a transmission line. Employing series reimbursement also ends in phenomenon
of sub synchronous resonance (SSR) wherein, the electrical and mechanical herbal
frequencies suit and alternate strength leading to excitation of herbal torsional modes of the
turbine generator unit. Thyristor controlled series capacitor (TCSC) has made it viable for
the short manipulate of power go with the flow within the transmission line. The side-line of
TCSC is to boom transmission traces functionality and also damps out sub-synchronous
resonances (SSR) as result of energy oscillation damping. It has been known due to the fact a
long time that series reimbursement for fixed capacitors is a both value and useful resource
effective manner of enhancing strength float in comparison to conventional production of
recent traces. It turned into generally believed that 70% reimbursement may be used with
none hassle up to 1971. It was learnt that constant series reimbursement can motive subsynchronous resonance (SSR) through 1971. The TCSC is a reactive electricity compensating
flexible alternating current transmission system tool for many advantages which include
variable compensation and strength manipulate. A controller that's able to SSR detection as
soon because the guide transfer is put on is designed, which is sub synchronous damping
controller (SSDC). SSDC detects the sub synchronous resonance phenomenon and directs the
correct sign of the TCSC. TCSC can in all likelihood mitigate the SSR. In this papers Eigen
price evaluation technique and manipulate of strength machined oscillations the usage of
TCSC was advanced. The description of energy machine oscillations using the Eigen values
and eigenvectors of the state matrix are in element. The effectiveness of the method used
improves the transmission functionality.