Bird Swarm Algorithm Applied to the Wide-Area Damping Controller Design

摘要

Low-frequency oscillation modes, local or interareas, when not properly mitigated can compromise the stability of power system operation and consequently the supply of electricity to consumer centers. Traditionally, the use of Power System Stabilizers has been promising in mitigating local oscillation modes but has limited effect in inter-area modes. Recent advances in communication technologies have enabled the creation of Wide-Area Damping Controllers (WADCs) whose input signals are provided by Phasor Measurement Units (PMUs). These WADC is multivariable and thus is more promising in mitigating inter-area oscillation modes. However, variable delays in the transmission of signals on the communication channels can compromise the design. This article proposes a WADC design method based on Bird Swarm Algorithm considering two limits for signal transmission delays: one stipulated for the normal operation of the control system and the other for cases where the time delay exceeded the first limiter for some reason. Case studies are presented in this article including statistical evaluation and nonlinear time-domain simulations.