AUTHOR=Joga S. Ramana Kumar , Sinha Pampa , Paul Kaushik , Sahoo Satyabrata , Pani Samita Rani , Dei Geetanjali , Ustun Taha Selim TITLE=Identification of harmonic sources in smart grid using systematic feature extraction from non-active powers JOURNAL=Frontiers in Smart Grids VOLUME=3 YEAR=2024 URL=https://www.frontiersin.org/journals/smart-grids/articles/10.3389/frsgr.2024.1338774 DOI=10.3389/frsgr.2024.1338774 ISSN=2813-4311 ABSTRACT=

The paper introduces a novel method for identifying the location of harmonic-generating sources in smartgrids. The method utilizes a Dual-Tree Complex Wavelet Transform (DTCWT) of voltage and current signals measured at a specific point in the network. By applying DTCWT Transform, the signals are decomposed, and three non-active power quantities are extracted to represent the harmonic components within the system exclusively. These chosen non-active power quantities serve as indicators of the presence of harmonics in the system. Through analysis and comparison of these quantities, the method enables determining the precise location of the dominant harmonic generating source. This information is valuable for effectively addressing and mitigating harmonic issues in the network. Leveraging DTCWT and focusing on non-active power quantities provides a valuable tool for power system engineers and operators to diagnose and mitigate harmonic issues, ultimately improving power quality and system performance. This study presents a new feature extraction method to compute Non-active power quantities based on DTCWT due to its shift-invariant property.