Sensitivity analysis and stochastic approach in study of transient recovery voltage with presence of superconducting FCL

Due to the increased interconnection of networks and the growth in the use of new power plants, fault current levels in power system continue to rise. One of the viable solutions for handling this issue is the use of fault current limiters (FCL) to reduce the short circuit current so that the existing Circuit Breakers (CB) can still operate without any upgrade. High-temperature superconducting fault current limiters (SFCL) are a widely accepted FCL. In this paper, a stochastic approach has been used for assessment of the transient recovery voltages (TRV) induced across CB poles of simple test line equipped with SFCL considering the uncertainties associated with system parameters and sensitivity analysis of these parameters. By this method, not only the expected value of the TRV can be calculated, but the probability distribution of it can also be determined. The simulations have been done in EMTP-RV environment.