Abstract
This paper describes a novel load-shedding strategy that assures adequate voltage stability margin in post-load-shedding conditions. Minimum numbers of buses are selected for load shedding based on the incremental voltage of the load buses. An objective function has been formed that is to be minimized based on inequality constraints on load bus voltage and line flow. This objective function is the weighted sum of the slope of the PV-curve of the weakest bus, transmission losses, and the total load shed amount, which has been normalized with respect to the pre-load shed condition. A modified Crow Search Algorithm (CSA) has been used to obtain optimal load shed. The developed methodology has been implemented on standard IEEE 14 and 25-bus test systems, and comparisons based on statistical inferences have been carried out with the Sine–Cosine, Jaya, and Self-adaptive differential evolution (SaDE) algorithms.
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