Application of full order sliding mode control based on different areas power system with load frequency control

Area of Science:

• Electrical Engineering
• Control Systems
• Power Systems

Background:

• Traditional sliding mode control (SMC) methods suffer from singularity issues due to their reduced-order nature.
• Load frequency control (LFC) in power systems is critical for maintaining grid stability and requires robust control strategies.

Purpose of the Study:

• To propose and evaluate a new full-order sliding mode control (SMC) method for load frequency control.
• To address and eliminate the singularity problem inherent in traditional SMC approaches.
• To compare the performance of the proposed methods against traditional SMC.

Main Methods:

• Development of a full-order sliding mode control (SMC) framework encompassing Terminal Sliding Mode Control (TSM) and Linear Sliding Mode Control (LSM).
• TSM is designed to avoid derivatives of fractional power terms, thereby eliminating singularity.
• LSM is incorporated for its design simplicity and faster convergence compared to TSM.
• Modeling of power systems with various turbine types, including nonlinearities, for simulation.

Main Results:

• The proposed TSM and LSM methods successfully eliminated singularity in the load frequency control.
• Simulations confirmed that both TSM and LSM effectively maintained frequency deviation at zero under various load disturbances, demonstrating robustness.
• Comparative analysis showed the proposed methods outperformed traditional SMC in reducing chattering and improving response time.

Conclusions:

• The novel full-order sliding mode control (SMC) approach, utilizing TSM and LSM, effectively overcomes singularity issues in load frequency control.
• The proposed methods offer enhanced robustness and faster response times compared to traditional SMC, making them suitable for power system applications.
• This research validates the superiority of the new full-order SMC techniques for stable and efficient power grid operation.