WAMS-based dynamic output-feedback control of power systems with network-induced delay and random data missing

摘要

A wide-area control problem of power systems based on wide-area measurement system (WAMS) is investigated. Via discrete dynamic output-feedback control, a closed-loop power system is modeled as a discrete-time networked control system considering both network-induced delay and random data packet dropout in the communication network of WAMS. The network-induced delay is assumed to have an upper bound; the random data packet dropout is described by a Bernoulli random binary distribution. Next, exponential mean-square stability conditions for the power system are established, and linear matrix inequality based methods are presented to design a wide-area damping controller. Finally, nonlinear simulations show the effectiveness of the proposed approach.