Quantitative Analysis Method for Impact of Distributed Photovoltaic Access in Distribution Networks Based on Gaussian Mixture Model
Aiming at the problem of difficulty in accurately assessing the impact of a large number of PV connected to the grid on the distribution network,a method of quantitative analysis for the impact of distributed PV access on the distribution network based on Gaussian mixture model is proposed in this paper.Firstly,based on the historical data of node load and solar irradiation intensity in distribution station area,an uncertainty model of the node injection power in the distribution station area is established based on the Gaussian mixture model theory,and the probability density function of the node voltage amplitude,branch circuit active power flow and other electrical quantities in the distribution station area is calculated by the linearized power flow method.Secondly,the quantitative evaluation index system for the impact of distributed PV access is established,and the quantitative evaluation method of distributed PV access impact is proposed.Finally,the method proposed in this paper is verified based on the case analysis.
distribution griddistributed photovoltaicGaussian mixture modelnode loadrisk indicators
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