With the development of industry 4.0, new energy generation, electric vehicles and high-speed railways, the harmonic pollution problem of power grid has become more and more serious. The comprehensive treatment, responsibility division and cause analysis of power grid harmonics have become extremely urgent. This paper mainly studies a kind of artificial harmonic measurement method. In this paper, linear neural network is introduced into harmonic detection of power system because of its simple structure and small computation. A method based on the approximation of the 5, 7, 11 and 13 harmonics of CVT and neural network is studied to predict the transfer coefficients of each harmonics of CVT in the field. Simulation results show that the detection effect of the proposed method is superior.

Shenglan Li. Harmonic Measurement Method Based on Artificial Neural Network. Machine Learning Theory and Practice (2020), Vol. 1, Issue 4: 9-16. https://doi.org/10.38007/ML.2020.010402.

[1] Luu T T, Wörner H J. Measurement of the Berry curvature of solids using high-harmonic spectroscopy. Nature communications, 2018, 9(1): 1-6. https://doi.org/10.1038/s41467-018-03397-4

[2] Seferi Y, Blair S M, Mester C, et al. Power quality measurement and active harmonic power in 25 kV 50 Hz AC railway systems. Energies, 2020, 13(21): 5698. https://doi.org/10.3390/en13215698

[3] Inada Y, Shioda T, Nakamura R, et al. Systematic 1D electric field induced second harmonic measurement on primary-to-secondary transition phase of positive streamer discharge in atmospheric-pressure air. Journal of Physics D: Applied Physics, 2020, 55(38): 385201. https://doi.org/10.1088/1361-6463/ac7b54

[4] Vedik B, Shiva C K, Harish P. Reverse harmonic load flow analysis using an evolutionary technique. SN Applied Sciences, 2020, 2(9): 1-11. https://doi.org/10.1007/s42452-020-03408-4

[5] Kuwałek P, Wiczy G. Problem of total harmonic distortion measurement performed by smart energy meters. Measurement Science Review, 2020, 22(1): 1-10. 

[6] Salis V, Costabeber A, Cox S M, et al. Experimental validation of harmonic impedance measurement and LTP Nyquist criterion for stability analysis in power converter networks. IEEE Transactions on Power Electronics, 2018, 34(8): 7972-7982. https://doi.org/10.1109/TPEL.2018.2880935

[7] Bernard L, Goondram S, Bahrani B, et al. Harmonic and interharmonic phasor estimation using matrix pencil method for phasor measurement units. IEEE Sensors Journal, 2020, 21(2): 945-954. https://doi.org/10.1109/JSEN.2020.3009643

[8] Carta D, Muscas C, Pegoraro P A, et al. Identification and estimation of harmonic sources based on compressive sensing. IEEE Transactions on Instrumentation and Measurement, 2018, 68(1): 95-104. https://doi.org/10.1109/TIM.2018.2838738

[9] Letizia P S, Signorino D, Crotti G. Impact of DC Transient Disturbances on Harmonic Performance of Voltage Transformers for AC Railway Applications. Sensors, 2020, 22(6): 2270. https://doi.org/10.3390/s22062270

[10] Tadayon M, Hooshmand R A, Kiyoumarsi A, et al. Imposing fair penalty to the harmonic sources based on the measurement data. IET Generation, Transmission & Distribution, 2020, 15(17): 2446-2459. https://doi.org/10.1049/gtd2.12189

[11] Enpuku K, Shibakura M, Arao Y, et al. Wash-free detection of C-reactive protein based on third-harmonic signal measurement of magnetic markers. Japanese Journal of Applied Physics, 2018, 57(9): 090309. https://doi.org/10.7567/JJAP.57.090309

[12] Pérez-Benito Ó, Weigand R. Nano–dispersion–scan: measurement of sub-7-fs laser pulses using second-harmonic nanoparticles. Optics Letters, 2019, 44(20): 4921-4924. https://doi.org/10.1364/OL.44.004921

[13] Van Tilborg J, Gonsalves A J, Esarey E, et al. High-sensitivity plasma density retrieval in a common-path second-harmonic interferometer through simultaneous group and phase velocity measurement. Physics of Plasmas, 2019, 26(2): 023106. https://doi.org/10.1063/1.5080269

[14] Toscani S, Faifer M, Ferrero A, et al. Compensating nonlinearities in voltage transformers for enhanced harmonic measurements: The Simplified Volterra Approach. IEEE Transactions on Power Delivery, 2020, 36(1): 362-370. https://doi.org/10.1109/TPWRD.2020.2978668

[15] Chernyshev S L, Chernyshev A S. General Problems of Metrology and Measurement Technique Metrological Aspects of Harmonic Self-Organization. Measurement Techniques, 2020, 65(3): 157-165. 

[16] Granados-Lieberman D. Global harmonic parameters for estimation of power quality indices: An approach for PMUs. Energies, 2020, 13(9): 2337. https://doi.org/10.3390/en13092337

[17] Faul F T, Kornprobst J, Fritzel T, et al. Near-field measurement of continuously modulated fields employing the time-harmonic near-to far-field transformation. Advances in Radio Science, 2019, 17(B.): 83-89. https://doi.org/10.5194/ars-17-83-2019

[18] Chen L, Farajollahi M, Ghamkhari M, et al. Switch status identification in distribution networks using harmonic synchrophasor measurements. IEEE Transactions on Smart Grid, 2020, 12(3): 2413-2424. https://doi.org/10.1109/TSG.2020.3038214