Influence of Some Factors in Practical System on the Dynamic Parameter Model of Harmonic Source and the Corresponding Solutions

Compared with other harmonic source models, the dynamic parameter model (DPM) has the advantage of accuracy and good application prospects. Previous studies on the DPM have been carried out under ideal conditions. In order to improve the practicability of the DPM, for the first time, this paper studied the influence of some factors in practical system on the DPM, the corresponding solutions and suggestions were put forward. Firstly, the DPM was briefly introduced and the concept of nonlinear characteristic curve of harmonic source was put forward. Secondly, in order to deal with the time-varying of harmonic source in practical system, a method of dividing each working state and modeling separately was developed. Thirdly, the influence of the sampling quantity, range and error on the accuracy and parameters of the DPM were analyzed, the guidance on sampling for different kinds of harmonic sources were obtained. Finally, the practical research direction of the DPM in the future were discussed.

[1]  Sabine Van Huffel,et al.  Overview of total least-squares methods , 2007, Signal Process..

[2]  Lennart Söder,et al.  A Norton approach to distribution network modeling for harmonic studies , 1999 .

[3]  Zhengyou He,et al.  Harmonic Resonance Evaluation for Hub Traction Substation Consisting of Multiple High-Speed Railways , 2017, IEEE Transactions on Power Delivery.

[4]  Xinliang Ge,et al.  A Dynamic Parameter Model of Harmonic Source Networks , 2020, IEEE Transactions on Power Delivery.

[5]  M. Fotuhi-Firuzabad,et al.  Reliability Assessment of Protective Relays in Harmonic-Polluted Power Systems , 2017, IEEE Transactions on Power Delivery.

[6]  Zhengyou He,et al.  Adaptive method for harmonic contribution assessment based on hierarchical K -means clustering and Bayesian partial least squares regression , 2016 .

[7]  M. Fauri,et al.  Harmonic modelling of non-linear load by means of crossed frequency admittance matrix , 1997 .

[8]  Zhengyou He,et al.  Potential Harmonic Resonance Impacts of PV Inverter Filters on Distribution Systems , 2015, IEEE Transactions on Sustainable Energy.

[9]  Fei Wang,et al.  Modeling and Analysis of Grid Harmonic Distortion Impact of Aggregated DG Inverters , 2011, IEEE Transactions on Power Electronics.

[10]  Mark Sumner,et al.  A technique for power supply harmonic impedance estimation using a controlled voltage disturbance , 2002 .

[11]  Wilsun Xu,et al.  A Harmonically Coupled Admittance Matrix Model for AC/DC Converters , 2007, IEEE Transactions on Power Systems.

[12]  W. Xu,et al.  Measurement of Network Harmonic Impedences: Practical Implementation Issues and Their Solutions , 2001, IEEE Power Engineering Review.

[13]  Honggeng Yang,et al.  Assessing Utility Harmonic Impedance Based on the Covariance Characteristic of Random Vectors , 2010, IEEE Transactions on Power Delivery.