Abstract
This article proposes a non-fragile control model approach for the design of an event-triggered control (ETC) for frequency and tie-line power regulation in a networked power system with communication delays. The proposed non-fragile control approach can tolerate controller parameter variations without any degradation in the system performance. The event condition is designed based on the relationship between the ETC and the non-fragile system. The effectiveness of the proposed design is validated with three-area interconnected power systems under load disturbances. The superiority of the proposed work is shown by comparative analysis with recently reported works. Furthermore, system robustness is validated with random step load disturbance, matched uncertainty, power system nonlinearities, communication link noise, integration of renewable energy resources, and with the IEEE 39 bus system. The closed-loop system stability is theoretically proved using the Lyapunov candidate function and verified by simulations.
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