Chaotic Harris hawks optimisation based fuzzy lead lag TCSC and PSS with coordinated control design for enhancement of power system transient stability

This paper investigated the application of Chaotic Harris Hawks optimisation (CHHO) technique for the tuning of a coordinated control of fuzzy lead lag based TCSC controller with fuzzy based PSS power system. The eigenvalues and simulation results of proposed CHHO optimised TCSC controller are presented and compared with a coordinated control of lead lag TCSC controller with PSO, DE and GSA optimised lead lag controller under various cases of operating conditions and disturbances in SMIB power system. The CHHO optimised of proposed fuzzy coordinated controller is compared with CHHO based lead lag TCSC coordinated control of same power system to check the effectiveness and robustness analysis. Finally, the proposed design approach is extended to multi-machine test model system to demonstrate the coordinated control of fuzzy lead lag TCSC damping controller with fuzzy power system stabilises to damp out oscillations in power system to improve transient stability performances.