Stability Enhancement Study of Dynamic Loads by Using Dstatcom

Dynamic loads such as induction motors and synchronous motors in industrial power systems are vulnerable to power system disturbance such as voltage sags caused by system short-circuit faults. Traditionally, static var compensators (SVCs) are used for enhancement of system stability with dynamic loads. Recently, due to rapid development of high power switching elements such as IGBTs and IGCTs, distribution level static compensators (DSTATCOMs) have been recognized as the next-generation compensator for enhancement of power system stability. The development and application of a DSTATCOM for enhancement of dynamic loads will be explored in this project. First, a control scheme will be developed for the DSTATCOM to enhance the stability of dynamic loads including induction motors and synchronous motors. Then, suitable simulation program such as MATLAB/Simulink or EMTPRv will be evaluated and employed for constructing the simulation system. Computer simulation will be made to evaluate the effectiveness of the DSTATCOM in stability enhancement. Accordingly, a transient network analyzer (TNA)-based test system will be built. The hardware prototype of the DSTATCOM will be built by using digital controller and multilevel cascaded H-bridge inverter architecture. Finally, experimental results will be given for verification.

Project ID:PB9808-2364
External Project ID:NSC98-2221-E182-061