Publications

Initial closed-loop testing results for the pacific DC intertie wide area damping controller

Trudnowski, Daniel; Pierre, Brian J.; Wilches-Bernal, Felipe; Schoenwald, David A.; Elliott, Ryan T.; Neely, Jason; Byrne, Raymond H.; Kosterev, Dmitry

Lightly damped electromechanical oscillations are a source of concern in the western interconnect. Recent development of a reliable real-time wide-area measurement system (WaMS) has enabled the potential for large-scale damping control approaches for stabilizing critical oscillation modes. a recent research project has focused on the development of a prototype feedback modulation controller for the Pacific DC Intertie (PDCI) aimed at stabilizing such modes. The damping controller utilizes real-time WaMS signals to form a modulation command for the DC power on the PDCI. This paper summarizes results from the first actual-system closed-loop tests. Results demonstrate desirable performance and improved modal damping consistent with previous model studies.