Advanced Load Shedding Strategy Incorporating Voltage and Frequency Stability for Enhanced Grid Reliability

Power systems are frequently exposed to various disturbances and contingencies that can jeopardize grid stability. Some scenarios may require the hard line delegation of cutting a portion of the load in order to save the system from succumbing to a catastrophic position like a blackout. Throughout the world, a great many load shedding schemes are available, each one being quite contrastive to the others. This paper introduces an innovative approach to load shedding that integrates real-time frequency deviation and reactive power margin to ensure both voltage and frequency stability. The proposed methodology dynamically adjusts the amount of load shed based on system conditions, prioritizing non-critical loads while minimizing disruptions. Frequency excursions beyond system limits is prevented by taking advantage of the Rate of Change of Frequency (RoCoF) and reactive power margin in this method, safeguarding equipment and maintaining grid integrity. The performance of the methodology was validated through simulations on the North-Western power grid of Bangladesh, demonstrating superior performance in arresting frequency excursions while reducing the total load shed compared to traditional schemes. A satisfactory and convincing result is attained endorsing the efficaciousness of this adaptive load shedding strategy in enhancing grid stability and reliability.