A Supervisory Remote Management System for Parallel Operation of Modularized D-STATCOM

This paper proposes parallel operation between modularized distribution static synchronous compensator (D-STATCOM) systems for low voltage distribution networks. The proposed methodology is suitable for smart grid applications where multiple renewable energy sources are integrated to the network, hence improved grid voltage stability is required. An advanced control technique that allows monitoring, wireless communication and coordination between the connected modules is presented. A graphical user interface has been developed to perform as a supervisory management system in the control center. The control center is responsible to send external control commands to the D-STATCOMs wirelessly through internet. Grid voltage stability is evenly shared among the modules. Modularity and operation flexibility can be achieved as well. The system has been evaluated by controller hardware-in-the-loop approach, where the power stage is simulated in a real time digital simulation, while the control algorithm is developed in a digital signal processor.