In this paper, a Sequential Approach is described to design the supplementary damping controller of a ThyristorControlled Series Compensator (TCSC) and a Static Synchronous Compensator (STATCOM) with a multi-model system to enhance power system small-signal stability under different operating conditions and with respect to various disturbance scenarios. Control objectives including regional pole placement and norm bounded mix sensitivities H 2 and Hf are used to solve the Bilinear Matrix Inequalities (BMI) problem in each linearized model via a two-step method. Linear system performance of eigenanalysis and real-time simulations will be carried out to validate the effectiveness of the damping controllers. A test system of 68-bus 16-generator and 5-area (NYPS-NETS) is used as the platform for controller implementation.
C. Li et al., "Enhancement of power system small-signal stability by coordinated damping control of multiple FACTS devices," 13th IET International Conference on AC and DC Power Transmission (ACDC 2017), Manchester, 2017, pp. 1-6, doi: 10.1049/cp.2017.0007.
KEYWORDS: TCSC, STATCOM, inter-area oscillation, small-signal analysis, supplementary damping controller, sequential approach, multi-model system, BMI