Synthetic Test Installation for Converter Valves for HVDC Transmission

A synthetic valve test facility employing a unique low voltage off-commutation scheme has been constructed for the development and testing of Liquid Metal Plasma Valves for HVDC transmission. The installation is capable of testing valves up to a voltage and current of 200 kV and 1800 A, respectively. It possesses a high degree of operational flexibility and is able to closely simulate the working duty of converter valves used in HVDC terminals. The operating characteristics of the test installation have been illustrated.