Design and application of test system for Solid State Transfer Switch

Solid State Transfer Switch (SSTS) is one of the most economic and effective techniques that can solve the problem powering to sensitive load and critical load uninterruptedly. SSTS uses modern power electronic technology and measurement technology which are based on microprocessor, optical fiber communication and digital signal processing technology to meet the need of power supply. This paper shows how to design solid state switch test system through the three-phase power phase shifter and voltage sag simulation device. Using this system, the actual operation performance of SSTS is analyzed. The result shows that SSTS can keep sensitive load operating including metal-halide lamp. In addition, the system can test SSTS and other same kind of device before the listing. It is also beneficial to field hand-over test and maintenance technology research. Above all, it will provide reference to engineering staffs.