| Title |
Equivalent 10-Hz Flicker Index Calculation Using Half-cycle Sliding Window and Recursive RMS Method |
| DOI |
https://doi.org/10.5370/KIEE.2011.60.11.2017 |
| Keywords |
Half-cycle sliding window ; Flicker ; Recursive RMS method ; Voltage fluctuation ; δV_{10} |
| Abstract |
Flicker, which is also known as voltage fluctuation, is an electromagnetic phenomenon generated by large scale nonlinear loads, such as arc furnaces and welding machines. Since a severe and continuous flicker can cause to some damages to electrically sensitive loads as well as human's visual irritations, it needs to be appropriately managed by being accurately measured, quantified and assessed. In Korea, an equivalent 10-Hz flicker index, shortly δV10, is used to determine the permission limit of flicker. This paper presents an efficient calculation of the flicker index by using a half-cycle sliding window and a recursive method, showing a concrete calculating procedure of δV10 from the viewpoint of signal processing. |