Design for ±1 100 kV UHVDC thyristor valve operational test circuit

Abstract

To improve HVDC technology that can reduce transmission power loss, to improve capacity of transmission power, and to increase transmission distances, we proposed a new synthetic operational test circuit for ±1100 kV thyristor valve, and put forward prospective ±1100 kV UHVDC operational test parameters reference specification. Moreover, we discussed and verified test electrical circuit design, control and protection design and measurement monitoring systems design by simulation tools. The simulation results show that operational test circuit designs are correct and can better meet tests requirements. The test circuit can be used to test a thyristor valve section with 15 thyristor levels series, and the maximum capacity thyristor valve operational test circuit can be used as a platform for HVDC research, development and projects construction.