Design of Wide-Area Damping Controllers for Interarea Oscillations

TitleDesign of Wide-Area Damping Controllers for Interarea Oscillations
Publication TypeJournal Article
Year of Publication2008
AuthorsYang Zhang, Anjan Bose
JournalIEEE Transactions on Power Systems
Pagination1136 - 1143
Date Published08/2008
KeywordsAA05-002, AARD, Automatic Switchable Network (ASN), oscillations, Power system stability

This paper develops a systematic procedure of designing a centralized damping control system for power grid interarea oscillations putting emphasis on the signal selection and control system structure assignment. Geometric measures of controllability/observability are used to select the most effective stabilizing signals and control locations. Line power flows and currents are found to be the most effective input signals. The synthesis of the controller is defined as a problem of mixed H 2/H infin output-feedback control with regional pole placement and is resolved by the linear matrix inequality (LMI) approach. A tuning process and nonlinear simulations are then used to modify the controller parameters to ensure the performance and robustness of the controller designed with linear techniques. The design process is tested on the New England 39-bus ten-machine system.

Short TitleIEEE Trans. Power Syst.