Research on Harmonic Resonance Mechanism and Characteristics for Power System with High Proportion of Renewable Energy

Shi, Jinhui; Chen, Wei; Pei, Xiping; Zheng, Guoqiang; Wang, Kun

doi:10.1007/978-981-15-9746-6_24

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2021

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“…A simplified approach to address resonances in WPPs, in relation to instabilities and negative damping with wind turbines, is presented in [43]. In [44], a transfer function (referred to as "frequency scanning") is used to detect resonances for a WPP.…”

Section: Introductionmentioning

confidence: 99%

Harmonic Transfers for Quantifying Propagation of Harmonics in Wind Power Plants

Schwanz

Bollen

Lennerhag³

et al. 2021

Energies

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In this paper, primary and secondary emissions in wind power plants are studied by using transfer admittance and current transfer functions between turbines and the public grid. The use of such transfer functions allows harmonic propagation studies without knowledge of the emission from individual turbines or the background voltage distortion. The transfer functions are calculated for one synthetic and one existing wind power plant, and results are discussed. Primary emission, secondary emission from other turbines and secondary emission from the public grid are shown to be of the same order of magnitude. Furthermore, the paper addresses the impact of turbine converter modelling, public grid impedance and the change in the aggregation exponent with frequency on the propagation. All three are shown to have a significant impact and should be considered. The main challenge for future studies is in obtaining relevant models for turbine impedance versus frequency.

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Section: Introductionmentioning

confidence: 99%