Quantifying disturbance level of voltage sag events

  title={Quantifying disturbance level of voltage sag events},
  author={C. C. Shen and A. Wang and R F Chang and C. N. Lu},
  journal={IEEE Power Engineering Society General Meeting, 2005},
  pages={2314-2318 Vol. 3}
This paper presents an application of fuzzy logic technique to quantify the system voltage sag disturbance level. It describes the fuzzy sets and IF-THEN inference rules involved in a process of providing a disturbance level to a voltage sag event based on the voltage dip windows defined by the South African utility ESKOM. The sag classes in the windows are exploited in defining the fuzzy membership functions which represent different classes of voltage depression and durations. The output of… CONTINUE READING