An Assessment Method for the Impact of Electric Vehicle Participation in V2G on the Voltage Quality of the Distribution Network

In order to further evaluate the impact of vehicle-to-grid (V2G) on the distribution network, this paper studies a method to assess the influence of electric vehicles participating in charge and discharge on the voltage quality of the distribution network. First, considering the state of charge of t...

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Bibliographic Details
Published in:Energies (Basel) 2022-06, Vol.15 (11), p.4170
Main Authors: Chen, Wei, Zheng, Lei, Li, Hengjie, Pei, Xiping
Format: Article
Language:English
Subjects:
Electric potential
Electric power grids
Electric vehicles
Electricity
Electricity distribution
Evaluation
Hypercubes
Latin hypercube sampling
Load distribution
Normal distribution
Power flow
probabilistic current
Probability distribution
Residential areas
Statistical analysis
V2G
Vehicle-to-grid
Voltage
voltage mass
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Summary:In order to further evaluate the impact of vehicle-to-grid (V2G) on the distribution network, this paper studies a method to assess the influence of electric vehicles participating in charge and discharge on the voltage quality of the distribution network. First, considering the state of charge of the EV, the participation of the owner and other factors, the charging and discharging model is built. Then, the probabilistic power flow calculation based on Latin hypercube sampling is used to obtain the probability distribution of the voltage amplitude of the charge and discharge load connected to the distribution network, and finally the evaluation index is established to quantify and calculate the voltage quality of the distribution network participating in the V2G process of electric vehicles. Simulation results show that the evaluation method has the advantage of fast calculation speed while ensuring known accuracy, introduces the probability distribution of expected value and variance quantification of voltage amplitude, more intuitively understands the degree of influence on voltage quality before and after V2G, and can effectively assess the impact of electric vehicles accessing the distribution network in V2G mode on the power quality of low-voltage residential areas and industrial and commercial areas, and this evaluation method can provide useful reference for the formulation of future V2G control strategies and the planning of future urban power grids.
ISSN:1996-1073
1996-1073
DOI:10.3390/en15114170