A New Method of Harmonic Detection Based on Auxiliary Tools

Abstract:

In power systems there are many non-linear loads, the resulting harmonics on the power quality can cause great impact to the power system. Thus it is important to monitor and analyze harmonics generated by these equipments in order to get a better power quality. In this paper, we firstly analysis the theoretical foundation of the harmonic measurement. Secondly, by use of the experimental data received from oscilloscope, we calculate and analyze the harmonic currents by using the tool of FFT in MATLAB. The method is of universal applicability, particularly compared with the expensive power analyzing equipments, which may be a good alternative.

• Periodical: Advanced Materials Research (Volumes 433-440)
• Pages: 6462-6466
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.433-440.6462
• Online since: January 2012
• Authors: Song Wang, Ming Guang Liu, De He Li, Hong Rui Wang
• Keywords: FFT, Harmonics, MATLAB, Oscilloscope

References

[1] T. Lobos, T. Kozina, and J.H. Koglin, Power system harmonics edtimation using linear least squares method and SVD, Instrument and Measurement Technology Conference, 1999. IMTC/99, Proceeding of the 16th IEEE, pp.789-794, (1999).

DOI: 10.1109/imtc.1999.776975

[2] I. Purkayastha, P.J. Savioe, Effect of harmonics on power measurement, IEEE Transactions on Industry Applications, vol. 26, no. 5, pp.944-946, (1999).

[3] Flying technology products research and development center, MATLAB7 auxiliary signal processing technology and applications, Publishing House of Electronic Industry, (2005).

[4] Zhou Hui, Dong Zhenghong, Digital signal processing fundamental and MATLAB achievement, Beijing Hope Electronic Press, China Forestry Publishing House, (2006).

[5] Wang Zhaoan, Yang Jun, and Liu Jinjun, Harmonic suppression and reactive power compensation, Beijing: China Machine Press, (2006).