Load frequency control in deregulated power system integrated with SMES–TCPS combination using ANFIS controller

• ANFIS control approach is implemented in a two area deregulated power system.
• SMES–TCPS combination with ANFIS controller for improving the dynamic response.
• ANFIS control approach is compared with conventional PI and fuzzy logic controller.
• To analyze the effect of SMES–TCPS combination for different contract scenarios.

In this paper, the application of Adaptive Neuro Fuzzy System (ANFIS) controller is used for mitigating the various Load Frequency Control (LFC) issues in a two area hydrothermal power system under deregulated environment is highlighted. To improve the LFC performance, combination of Super Conducting Magnetic Energy Source (SMES) and Thyristor Controlled Phase Shifters (TCPS) are included in its control area. The implementation of SMES–TCPS combination arrests the initial fall in frequency as well as the tie line power deviations after a sudden load disturbance. To investigate the effectiveness of the proposed approach, the dynamics of the system is analyzed with unilateral, bilateral and contract violation cases for a small load perturbation and the comparative results are also presented. The simulated results show that the performance of ANFIS controller is better than the conventional PI controller and the Fuzzy logic controller.