Stability enhancement of power system based on HHO-TSA control scheme

ABSTRACT

In this article, an efficient control scheme is proposed to enhance the voltage regulation and stability of the power system. The proposed control scheme is the combination of both the Harris Hawks Optimization Algorithm (HHOA) and the Tabu Search Algorithm (TSA). The HHOA searching process is improved by utilising the TSA algorithm based on the minimal error objective function and named the HHO-TSA control scheme. The proposed HHO-TSA ensures adequate swing damping through minimising the mutual influence during transient stability with voltage regulation. An optimisation complex for tuning the parameters of power system stabilisers (PSSs) is designed to increase the damping ratio of electro-mechanical systems and the HHO-TSA control system has been employed for searching optimum parameters. The analysis of the Eigenvalue investigates the dynamic behaviour of the power system at dissimilar characteristic frequencies by utilising the HHO-TSA control scheme. The proposed technique is activated in the MATLAB/Simulink site and the performance is assessed using other existing techniques. The Eigen value for two area systems using the proposed technique achieves −1.31 ± 2.18i, −1.42 ± 1.36i, −1.61 ± 1.53i, −4.50 ± .027i, −10.4 ± 12.6i, −13.7 ± 25.1i and −14.5 ± 55.6i. The Eigen value for nine bus systems using the proposed technique achieves −1.2 ± 2.41i, −2.5 ± 2.62i, −2.11 ± 2.68i, −2.15 ± .2.71i, −4.4 ± 3.76i, −4.7 ± 3.94i and −5.5 ± 6.99i.

KEYWORDS:

• Power system stability
• Harris Hawks optimization algorithm
• Tabu search algorithm
• controller
• dynamic behaviour
• generator
• unbalanced issues

Disclosure statement

No potential conflict of interest was reported by the author(s).