DHP Adaptive Critic based control of STATCOM in power system

This paper presents the design of a neurocontroller for a STATCOM that augments the conventional PI controller. The neurocontroller uses adaptive critic designs (ACDs) with emphasis on dual heuristic programming (DHP). Results are presented to show that the DHP based neurocontroller performs better than the conventional PI controller, especially when the system conditions and configuration changes. The numerical simulation results of using this method in one STATCOM connected to power system show that the control scheme can maintain voltage at load bus and prevent the occurrence of voltage collapse when the large disturbances occur.