A Centralized Wide Area Control of Facts for Damping Power System Inter-area Oscillations
Author: Hany Ahmed Abdelsalam Ahmed
Publisher:
Published: 2011
Total Pages: 200
ISBN-13:
DOWNLOAD EBOOKFlexible AC Transmission Systems (FACTS) control for damping power system inter-area oscillations is a topic of much interest. However, local decentralized FACTS controllers are either too complicated to be realizable or do not offer satisfactory performance under various system operating conditions. This research develops a procedure for designing a centralized Wide Area Controller (WAC) for FACTS based on the H [infinity] method. The H [infinity] control can guarantee robust performance by minimizing the effect of certain disturbances on the inter-area oscillations. This dissertation presents a new disturbance selection method under the H [infinity] method. A transformation of the disturbance vector is derived based on the response magnitude of the inter-area modes, which significantly reduces the number of disturbances to be rejected by the controller and decreases the computational time and memory for large power systems. The proposed method is applied to the IEEE 16-machine 5-area study system with multiple FACTS devices. The results demonstrate the effectiveness of the proposed method in design of FACTS H [infinity] - WAC for large power systems.