Benchmark Systems for Digital Computer Simulation of a Static Transfer Switch

This paper presents two benchmark systems for time-domain simulation of a thyristor-based static transfer switch (STS). The objectives are: (1) to provide guidelines for digital simulation of STS systems, (2) to provide a basis for performance evaluation of simulation programs used for STS analysis, and (3) to benchmark performance of various detection/control strategies adopted for STS systems. Each benchmark system is composed of: (1) a supply system, (2) STS, and (3) sensitive load. The two benchmark systems are referred to as STS-1 and STS-2. Simulated performances of the two systems, based on the use of the PSCAD/EMTDC software package, are provided. Simulation results corresponding to STS-2 are also compared with the corresponding measurement results.