An approach for optimum under frequency based load shedding for a power system network.

Under-frequency load shedding (UFLS) has been used to restore the electricity system after a major outage. However, based on the research of recent blackouts, voltage collapse and voltage-related issues are also major challenges in preserving system stability. As a result, both frequency and voltage must be considered in load shedding methods. To calculate the quantity of load to be shed and its optimal location, the research considered both aspects when building a load shedding plan. Voltage sensitivity is used to identify the location and amount of load to be shed from each bus. Newton-Raphson load flow method is used considering ZIP load model to show the enhancement in voltage profile and total loss. To test the validity of recommended attitudes, the IEEE 39-bus is used. For accurate results, a gravitational binary search optimization technique (BGSA) is utilized, and comparisons are made to demonstrate the efficacy of the proposed strategy. A BGSA optimization technique can help reduce the search space for the smallest amount of power shed and its location. The results show that the supplied techniques can employ the BGSA optimization algorithm to discover the optimal solution for a significant loss reduction and a better voltage profile and frequency. The planned disruptions include the loss of a generator for several buses and the loss of transmission lines in multiple situations. [ABSTRACT FROM AUTHOR]