PROJECT TITLE :

Assessing the Applicability of Uncertainty Importance Measures for Power System Studies

ABSTRACT:

This paper critically evaluates a range of uncertainty importance measures to be used in power system stability studies. Sensitivity analysis of uncertain system parameters is vital as new technologies proliferate and the entire level of system uncertainty grows. Correct assessment of the importance of various uncertainties can guide power system operators towards parameters which will require the best levels of mitigation or increased monitoring so as to reduce the uncertainty and its subsequent impact. Native and world sensitivity analysis techniques are described and evaluated inside this paper, including nonparametric methods, variance-primarily based approaches, and distribution-primarily based techniques. The techniques are illustrated employing a large 295-bus realistic network model of a generic distribution system. Numerical experiments on dynamic models are utilized in order to assess the impact of uncertainties on the mitigation of system frequency excursions using single-website and distributed energy storage devices.