Reliability Evaluation of HVDC System Using FTA-FD Method Considering Different Capacities of AC Filters

HVDC technology is more and more common in practical projects, of which reliability will affect the whole power system. As different evaluation methods, FTA and FD method had their own advantages and disadvantages, this paper combined FTA method with FD method. Firstly FTA method was used to get basic parameters of each subsystem, then combined each subsystem to a whole equivalent model with FD method. What's more, different capacities of AC filters were also under consideration. Finally, an actual example was given to demonstrate validity of the method that this paper proposed. Compared with Zusim software, the result is more accurate.