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http://dx.doi.org/10.5370/KIEE.2011.60.11.2017

Equivalent 10-Hz Flicker Index Calculation Using Half-cycle Sliding Window and Recursive RMS Method  

Cho, Soo-Hwan (상명대 융복합특성화대학 에너지그리드학과)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.60, no.11, 2011 , pp. 2017-2020 More about this Journal
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 ${\Delta}V10$, 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 ${\Delta}V10$ from the viewpoint of signal processing.
Keywords
Half-cycle sliding window; Flicker; Recursive RMS method; Voltage fluctuation; ${\Delta}V_{10}$;
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