scope:

Foreword

This introduction provides some background on the rationale used to develop this recommended practice.

This information is meant to aid in the understanding and usage of this recommended practice. This recommended practice describes rating considerations for Thyristor-Controlled Series Capacitor (TCSC) installations used in series with a transmission line. It is intended for

a) Individuals or organizations that use TCSC installations and acquire these stations from suppliers.

b) Individuals or organizations that influence how TCSC installations are acquired from suppliers.

c) Suppliers interested in providing TCSC installations to purchasers.

This recommended practice is designed to help organizations and individuals to

d) Incorporate equipment ratings during the definition, evaluation, selection, and acceptance of TCSC installations for operational use.

e) Determine how TCSC installations should be evaluated, tested, and accepted for delivery to end users.

This recommended practice is intended to satisfy the following objectives:

f) Promote consistency between organizations when acquiring TCSC installations from suppliers.

g) Identify issues that differentiate TCSC installations from conventional series capacitor installations and provide useful practices for rating TCSCs during acquisition planning.

h) Provide useful practices on evaluating supplier capabilities to meet purchaser requirements.

Scope

This is a recommended practice for specifying Thyristor-Controlled Series Capacitor (TCSC) installations used in series with transmission lines and should be used together with IEEE Std 824-1994 when specifying TCSC installations. 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, training, documentation, operation, and maintenance. This document does not provide recommended practices for the development of TCSC computer models. However, this document does present issues that need to be considered when developing TCSC computer models as discussed in Annex B (informative). Annex C (normative) provides a summary outline of recommended items that should be considered when preparing a TCSCspecification.