A distributed and integrated control strategy for an islanded microgrid considering line loss and communication...

Area of Science:

• Electrical Engineering
• Power Systems
• Control Theory

Background:

• Islanded microgrids with multiple distributed energy resources (DERs) face challenges in stability and economic operation.
• Existing control strategies often struggle with communication reliability and optimal power management.

Purpose of the Study:

• To design a distributed and integrated control strategy for networked islanded microgrids.
• To improve stability, economic operation, communication reliability, and voltage/frequency regulation.

Main Methods:

• An improved primary control combining power regulation with droop control, considering line loss factors.
• Optimal path reconstruction and Kalman filter with sliding mode control for communication and output channel reliability.
• Secondary controller for voltage and frequency regulation, analyzed using small-signal modeling.

Main Results:

• The proposed strategy achieves minimal generation cost and stable voltage and frequency.
• Enhanced resilience to communication interruptions in islanded microgrids.
• Validated effectiveness of the integrated control approach through case studies.

Conclusions:

• The distributed and integrated control strategy significantly enhances the performance of networked islanded microgrids.
• The approach offers a robust solution for managing multiple DERs under communication constraints.
• This work provides a foundation for more stable and economically efficient microgrid operations.