Real-time testing of hvdc circuit breakers Part 1: bench test development

In this paper, a new real-time testing technique for hvdc circuit breakers using the Electromagnetic Transient Program (EMTP) is presented. Full-size controlled converters are accurately modeled and different system topologies with hvdc circuit breakers are considered. Breaker miscellaneous switching duties are examined. The test results show that most of the system transients produced by the dc link and converter controls influencing breaker interruption are considered. Nearly exact realtime tester for hvdc breakers is developed for the first time.