An approach to determine a sequence of adjustments to eliminate voltage magnitude violations in transmission power systems

Voltage magnitudes in transmission power systems must be kept within the limits defined by regulatory agencies for safe operations. Thus, this paper proposes an approach to determine and apply a sequence of adjustments to control the voltage magnitude in such systems. The adjustments follow two methodologies based on a reduced Jacobian matrix (J
_qv
) of the system power balance equations. Computational simulations made in the IEEE (Institute of Electrical and Electronic Engineers) 57-bus system evaluated the proposed approach for operational scenarios with voltage magnitude violations. The results obtained provide the reactive power dispatch to correct voltage magnitude violations, voltage profiles and active power losses as the recommended adjustments are executed, showing that the control methodologies were able to manage the test system across different states without voltage magnitude violations.