Interval Secure Event-Triggered Control of Hybrid Power System Under DoS Attack

• Published in: IEEE access Vol. 13; pp. 42574 - 42586
• Main Authors: Chong, Dashuang, Si, Tongshu, Cheng, Zihao, Yang, Feng, Liu, Jigang, Lv, Zongwang
• Format: Journal Article
• Language: English
• Published: IEEE 2025
• Subjects: Costs; DoS attack; Event detection; event-triggered mechanism; Frequency control; hybrid power system; Hybrid power systems; H∞ control; Inverters; Power system dynamics; Power systems; Renewable energy sources; Silicon; virtual inertia control; Wind turbines
• ISSN: 2169-3536; 2169-3536
• DOI: 10.1109/ACCESS.2025.3548455

This note considers the active secure event-triggered control(ETC) problem of hybrid power system under DoS attack. A combination of load frequency control (LFC) and virtual inertia control (VIC) is adopted to deal with the influence of uncertainty and lower inertia induced by renewable energy like wind and solar power. To active defend DoS attack interrupting communication of measurement and control, an interval secure event-triggered mechanism (ISETM) is proposed under software defined network (SDN). Both a triggering transmission and a secure triggering interval are generated where the triggering packet is transmitted over SDN data plane and the secure triggering interval is sent to SDN control plane regulating SDN cybersecurity mechanism. Under ISETM, multi-area hybrid power system is modeled by a delay system with two triggering conditions. Furthermore, interval secure event-triggered LFC-VIC of hybrid power system is formulated by a <inline-formula> <tex-math notation="LaTeX">H_{\infty } </tex-math></inline-formula> control problem. A sufficient criterion of hybrid power system with the prescribed <inline-formula> <tex-math notation="LaTeX">H_{\infty } </tex-math></inline-formula> performance level is derived by using Lyapunov-Krasovskii functional method. A co-designed method of ISETM and LFC-VIC gains is given by linear matrix inequalities (LMIs). Finally, a two-area hybrid power system is simulated to verify the validness of the proposed interval secure event-triggered control (ISETC) method.