Analysis of Load Shedding parameters through a new scoring metric system

Electrical Power Systems are constantly exposed to various disturbances that can significantly affect their operation. Hence, the Automatic Under Frequency Load Shedding philosophy was proposed in order to relieve overloaded infrastructures in cases of imbalances between generation and demand. However, determining the various parameters that compose a conventional load shedding scheme is not a deterministic task. In this context, where load shedding schemes must be well designed, there is a need to pursue new methodologies to provide fast and optimized projects whose parameters are appropriate for the specific dynamics of each electrical system. Therefore, this paper proposes a methodology to analyse the required parameters in conventional load shedding designs. A scoring metric system is also presented to compare different proposed schemes. The methodology analyses the performance of each scheme design considering overload situations. In order to achieve this, a 12-Bus electrical system was modelled, promoting effective control and a testing platform. From the contingencies applied to the system and the scoring metric, each scheme was evaluated and compared in order to obtain the best configuration. The results demonstrate that the decreasing load distribution between the blocks has good generalization compared to the presented overload situations.