Selecting the Input-Output Signals for Fault-Tolerant Wide-Area Damping Control Design

Abstract

The operation of power systems requires requirements to ensure a continuous and secure supply of electricity. One of the requirements is the appropriate damping of low-frequency oscillation modes in small-signal stability studies. The expansion and uncertainties of power systems combined with the development of Wide-Area Measurement Systems led to the development of Wide-Area Damping Controllers (WADCs) whose measures are derived from Phasor Measurement Units (PMU) measures. Possible failures in the transmission of data packets from PMUs can compromise the proper operation of the WADC and thus compromise the stability of the system. This research proposes an optimization model for the WADC design considering the minimization of the input-output signals of the controller and the robustness of the loss of a communication channel. Case studies are presented and discussed using a set of Nature-Inspired Meta-Heuristic Algorithms applied to the proposed optimization method.