Abstract
In this article, a novel distributed secondary voltage and active power-sharing control strategy with a Zeno-free event triggering mechanism is proposed, to overcome voltage deviation and inaccurate power-sharing caused by the conventional V-P droop control strategy in multiterminal high voltage direct current grids. The secondary controllers can achieve the voltage restoration and proportional active power sharing within a fixed time. Utilizing the Lyapunov method, the trigger function and trigger condition for the controllers of each voltage source converter (VSC) station are designed, resulting in a significant reduction in the number of controller triggers during system transients and steady state. The fixed-time stabilization theory is employed, which allows a faster convergence performance. Moreover, by using the tanh function, we can get rigorous proof of avoiding Zeno behavior. Finally, a simulation model of five connecting VSC stations is built to demonstrate the satisfactory performance of the proposed control strategy.
Original language | English |
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Journal | IEEE Systems Journal |
Early online date | 14 Oct 2024 |
DOIs | |
Publication status | Published - 14 Oct 2024 |
Keywords
- droop control
- Event-triggered distributed control scheme
- fixed-time secondary voltage restore
- MTDC
- multi-agent
ASJC Scopus subject areas
- Control and Systems Engineering
- Information Systems
- Computer Science Applications
- Computer Networks and Communications
- Electrical and Electronic Engineering