Recommended practices for specifying thyristor-controlled series capacitor (TCSC) installations used in series with transmission lines are provided. Ratings for TCSC thyristor valve assemblies, capacitors, and reactors as well as TCSC control characteristics, protective features, cooling systems, testing, commissioning, training, documentation, operation, and maintenance are addressed.

This recommended practice specifies thyristor-controlled series capacitor (TCSC) installations used in series with transmission lines. The document addresses issues that consider ratings for TCSC thyristor valve assemblies, capacitors, and reactors as well as TCSC control characteristics, protective features, cooling systems, testing, commissioning, operation, and maintenance.

This document provides assistance and guidance to planning, substation, commissioning, and operation engineers in the course of specifying TCSC installations. Users of this document should tailor these recommendations to their specific project requirements.