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Information Technology Journal

Year: 2013 | Volume: 12 | Issue: 5 | Page No.: 1004-1010
DOI: 10.3923/itj.2013.1004.1010

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Authors


Li Jia-Sheng

Country: China

Wang Jia-Jia

Country: China

Tian Wang-Lan

Country: China

Hu Sai-Chun

Country: China

Xiao Wei-Chu

Country: China

Keywords


  • harmonic and inter-harmonic
  • Small hydro
  • add-window interpolation
Research Article

Detection of Harmonic and Inter-harmonic Caused by Synchronization of Small Hydropower Station

Li Jia-Sheng, Wang Jia-Jia, Tian Wang-Lan, Hu Sai-Chun and Xiao Wei-Chu
It is significant to boost the construction of small hydropower stations in mountainous areas due to the source water’s abundance and big fall. However, the instability of small hydro increases the power quality problems such as harmonic and inter-harmonic when synchronizing and brings about lots of difficulties in the rapid development. To solve the power quality problems is an important bottleneck in the development of small hydro. This paper bases on the currently available harmonic and inter-harmonic detection methods, focuses on the specific situation of small hydro synchronization and puts forward an add-window interpolation FFT algorithm. Meanwhile, comparisons among several situations adopting different window functions are made and simulations in MATLAB are processed. The results show that the add-window interpolation FFT algorithm can overcome the picket fence effect, frequency spectrum leakage and aliasing. When choosing window function, employing Hanning window is more appropriate for harmonic and inter-harmonic detection arose by the synchronization of small hydro.
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How to cite this article

Li Jia-Sheng, Wang Jia-Jia, Tian Wang-Lan, Hu Sai-Chun and Xiao Wei-Chu, 2013. Detection of Harmonic and Inter-harmonic Caused by Synchronization of Small Hydropower Station. Information Technology Journal, 12: 1004-1010.

DOI: 10.3923/itj.2013.1004.1010

URL: https://scialert.net/abstract/?doi=itj.2013.1004.1010

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