Abstract
Defending against false data injection attacks is critical to ensuring the stable operation of DC microgrids(MGs). Based on the traditional linear extended state observer (LESO), this article proposes a nonlinear extended state observer (NESO). While the conventional LESO is applicable to low-frequency attack scenarios, the proposed NESO, integrated with a predefined-time algorithm, enhances the dynamic performance near the steady-state. This enables it to effectively mitigate a wide range of cyber-attacks, including high-frequency ones. Experimental results demonstrate that under attacks involving constant, sinusoidal, and noise signal injections, the NESO can rapidly and accurately track and compensate for the attack signals, thereby safeguarding the stable operation of the DC MGs system.
| Original language | English |
|---|---|
| Title of host publication | China HVDC and Power Electronics Annual Meeting of CSEE, DCPE 2025 |
| Publisher | Institution of Engineering and Technology |
| Pages | 200-205 |
| Number of pages | 6 |
| Volume | 2025 |
| Edition | 49 |
| ISBN (Electronic) | 9781807050207, 9781807050344, 9781807050351, 9781807050375, 9781837242634, 9781837242900, 9781837242917, 9781837243143, 9781837243150, 9781837243167, 9781837243235, 9781837243341, 9781837243358, 9781837245277, 9781837246847, 9781837246854, 9781837247004, 9781837247011, 9781837247028, 9781837247035, 9781837247042, 9781837247059, 9781837247257, 9781837247264, 9781837247271, 9781837247295, 9781837247325, 9781837247332, 9781837249916 |
| DOIs | |
| State | Published - 1 May 2026 |
| Externally published | Yes |
| Event | 2025 China HVDC and Power Electronics Annual Meeting of CSEE, DCPE 2025 - Beijing, China Duration: 22 Oct 2025 → 24 Oct 2025 |
Conference
| Conference | 2025 China HVDC and Power Electronics Annual Meeting of CSEE, DCPE 2025 |
|---|---|
| Country/Territory | China |
| City | Beijing |
| Period | 22/10/25 → 24/10/25 |
Keywords
- DC microgrids
- destabilization attacks
- nonlinear extended state observer
- resilient distributed control
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