Geomagnetic-induced currents in power networks and transmission lines pose challenges for so many nations as they produce many unexpected effects. This paper contributes to the modelling and monitoring of geomagnetic induced currents in a power network, with an aim of minimising the energy in the signals using the optimal control method, specifically, the Hamiltonian method. This paper specifically employs the Haar wavelet transform to investigate the optimal energy in selected Namibian power network substations geomagnetic induced current's data during the two geomagnetic disturbance events in 2013 and 2015. The results reveal some significant phenomena during specific times of the day, which suggest the need for appropriate network disturbance mitigation strategies for the selected stations. Another major contribution is that the control managed to keep the energy as low for most of the period, illustrating that optimal control technique presents a good tool for geomagnetically induced current modelling.
Ndadi et al. (Fri,) studied this question.
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