DIN EN IEC 60143-4:2024-12

This document specifies the testing of thyristor controlled series capacitor (TCSC) installations used in series with transmission lines. This document also addresses issues that consider ratings for TCSC thyristor valve assemblies, capacitors, and reactors as well as TCSC control characteristics, protective features, cooling system and system operation. The standard differs from DIN EN 60143-4 (VDE 0560-41):2011-09 as follows: a) thyristor valve testing requirements refer to IEC 62823; b) Formula (1) in Subclause 4.2 has been corrected; c) Hardware-in-the-loop (HIL) tests, Subclause 7.5.4, replaces previously specified real time protection and control system test with network simulator. The TCSC circuit configurations take into account three basic modes of operation: - BKL operation with blocked thyristors (thyristor valve blocked); - BP operation with uninterrupted thyristor power supply; - CAP operation with capacitive voltage boost.