Detection of Flicker Caused by High-frequency Interharmonics

International standard bodies specified have an instrument capable of detecting and assessing the severity of lighting flicker, which is called a flickermeter. However, the recommended flickermeter did not consider flicker caused by high-frequency interharmonics. In recent studies, the deficiency of the current flickermeter standard is reported based on real field case examples. In this paper, we review the deficiency of the current flickermeter standard regarding interharmonics, and propose a new approach based on down-up sampling in the discrete time sample domain. We demonstrate the efficacy of the proposed method by qualitative and quantitative comparison with the current flickermeter standard in the presence of interharmonics.