Operating Modes of Thyristor Controlled Series Compensator (TCSC) In modern power transmission systems , the Thyristor Controlled Series Compensator (TCSC) plays a vital role in controlling power flow, enhancing stability, and improving power quality . TCSC is a key component of FACTS (Flexible AC Transmission Systems) , widely used to optimize transmission efficiency and system reliability. This article explains the operating modes of TCSC in detail — including Blocked Mode, Bypassed Mode, and Vernier Mode — along with their applications and advantages. ⚡ What is TCSC? A Thyristor Controlled Series Compensator (TCSC) is a series-connected FACTS device designed to increase or decrease the effective impedance of transmission lines . By adjusting the thyristor firing angle , TCSC provides dynamic control of power flow, voltage stability, and transient oscillations . 👉 Related Reading: Modeling TCSC for Stability Studies Control Strategies for TCSC Techniques 🔑...