Related Experiment Video
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06:04
Experimental Investigation of the Hierarchical Control in DC Microgrids Using a Real-time Simulator
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Distributed Dynamic Event-Triggered Control for Voltage Recovery in Islanded Microgrids by Using Artificial Delays
IEEE Transactions on Cybernetics
|February 28, 2024
Summary
This study introduces a novel distributed controller for islanded microgrids to improve secondary voltage recovery. The method reduces communication frequency among distributed generation units, enhancing efficiency and stability.
Area of Science:
- Electrical Engineering
- Control Systems
- Power Systems
Background:
- Islanded microgrids face challenges in secondary voltage recovery.
- High communication frequency among distributed generation (DG) units can be inefficient.
- Maintaining microgrid performance while reducing communication workload is crucial.
Purpose of the Study:
- To address the secondary voltage recovery problem in islanded microgrids.
- To reduce communication frequency among DG units.
- To maintain desired microgrid performance and save communication network workload.
Main Methods:
- A distributed proportional-integral-retarded (PIR) controller was developed using finite-difference approximation.
- A dynamic event-triggered mechanism (DETM) with Zeno-freeness was integrated with the PIR controller.
- Lyapunov-Krasovkii method was used to derive exponential stability conditions via linear matrix inequalities (LMIs).
Main Results:
- The proposed controller significantly mitigates communication burden and avoids resource waste.
- Stability conditions were derived, allowing evaluation of maximum sampling periods and DETM parameters.
- Numerical analysis on the IEEE 14-bus system validated the theoretical findings.
Conclusions:
- The distributed PIR controller combined with DETM effectively solves secondary voltage recovery in islanded microgrids.
- The approach enhances communication efficiency and preserves microgrid stability.
- This method offers a robust solution for managing communication in distributed generation systems.
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