Modeling and simulation of a static transfer switch

This summary discusses time-domain simulation results of two thyristor based static transfer switch (STS) systems. The objectives are: (1) to provide guidelines for digital simulation of STS systems; and (2) to provide a basis for accuracy evaluation of simulation studies used for STS performance analysis. Each system is composed of: (1) a supply system; (2) a STS; and (3) a sensitive load. The two systems are referred to as STS-1 and STS-2. Simulation performances of the two systems are obtained based on the use of PSCAD/EMTDC software package. Simulation results corresponding to STS-2 are also compared with the measurement results.