Exploring high-penetration electric vehicles impact on urban power grid based on voltage stability analysis

Lyu, Lin; Yang, Xinran; Xiang, Yue; Liu, Junyong; Jawad, Shafqat; Deng, Runqi

doi:10.1016/j.energy.2020.117301

Cited by 31 publications

(12 citation statements)

References 22 publications

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“…With the advanced technology of battery storages, the battery systems have been widely deployed in the renewable supported multi-energy systems [24]. The main functions of battery storages include the mitigation on renewable intermittence [25,26], load leveling through peak shaving and valley filling [27,28], power stability of micro-grid [29,30], economic savings with energy shifting [31,32], together with battery optimisation [33,34] and grid-responsive energy flexibility [35]. Phan et al [32] optimized the battery storage capacity for the operating cost savings of a grid-connected building energy system.…”

Section: Literature Reviewmentioning

confidence: 99%

An energy paradigm transition framework from negative towards positive district energy sharing networks—Battery cycling aging, advanced battery management strategies, flexible vehicles-to-buildings interactions, uncertainty and sensitivity analysis

2021

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Section: Literature Reviewmentioning

confidence: 99%

An energy paradigm transition framework from negative towards positive district energy sharing networks—Battery cycling aging, advanced battery management strategies, flexible vehicles-to-buildings interactions, uncertainty and sensitivity analysis

2021

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“…x is based on the rules as shown in Equation (9). x represents binary th j element in the th i individual, 1 r is random number generated between 0 and 1 and (0,1) U denotes standard uniform distribution.…”

Section: Formation Of Ocst Matrixmentioning

confidence: 99%

“…For the BEP, the mutation is applied by uniformly changing a variable from one to zero and vice versa. The mutation formulation for binary EP to generate an offspring x i+m from a parental vector x i is based on the rules as shown in Equation (9).…”

Section: Optimization Algorithmmentioning

confidence: 99%

“…From a grid point of view, it seems these modern vehicles are as an electric load on the system during the charging period. A frequent and uncontrolled charging strategy can cause negative effects such as an increase of power losses, voltage deviations, transformers, and line saturations [5][6][7][8][9]. As a result, the distribution grid's safe and reliable operation may be under high risk.…”

Section: Introductionmentioning

confidence: 99%

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A Coordinated Charging Scheduling of Electric Vehicles Considering Optimal Charging Time for Network Power Loss Minimization

et al. 2021

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Electric vehicles’ (EVs) technology is currently emerging as an alternative of traditional Internal Combustion Engine (ICE) vehicles. EVs have been treated as an efficient way for decreasing the production of harmful greenhouse gasses and saving the depleting natural oil reserve. The modern power system tends to be more sustainable with the support of electric vehicles (EVs). However, there have been serious concerns about the network’s safe and reliable operation due to the increasing penetration of EVs into the electric grid. Random or uncoordinated charging activities cause performance degradations and overloading of the network asset. This paper proposes an Optimal Charging Starting Time (OCST)-based coordinated charging algorithm for unplanned EVs’ arrival in a low voltage residential distribution network to minimize the network power losses. A time-of-use (ToU) tariff scheme is used to make the charging course more cost effective. The concept of OCST takes the departure time of EVs into account and schedules the overnight charging event in such a way that minimum network losses are obtained, and EV customers take more advantages of cost-effective tariff zones of ToU scheme. An optimal solution is obtained by employing Binary Evolutionary Programming (BEP). The proposed algorithm is tested on IEEE-31 bus distribution system connected to numerous low voltage residential feeders populated with different EVs’ penetration levels. The results obtained from the coordinated EV charging without OCST are compared with those employing the concept of OCST. The results verify that incorporation of OCST can significantly reduce network power losses, improve system voltage profile and can give more benefits to the EV customers by accommodating them into low-tariff zones.

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“…With the rapid development of the electric vehicle industry, the power quality problems caused by the access of electric vehicles to the power grid have received more and more attention from the industry. As the charging load increases, the original power flow distribution in the power network will also change, resulting in problems such as threephase imbalance and voltage deviation becoming increasingly prominent [1]. In addition, the batteries in the electric vehicles can also be used to discharge into the distribution grid, which is the V2G option.…”

Section: Introductionmentioning

confidence: 99%

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

Chen

et al. 2022

Energies

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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.

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Exploring high-penetration electric vehicles impact on urban power grid based on voltage stability analysis

Cited by 31 publications

References 22 publications

An energy paradigm transition framework from negative towards positive district energy sharing networks—Battery cycling aging, advanced battery management strategies, flexible vehicles-to-buildings interactions, uncertainty and sensitivity analysis

An energy paradigm transition framework from negative towards positive district energy sharing networks—Battery cycling aging, advanced battery management strategies, flexible vehicles-to-buildings interactions, uncertainty and sensitivity analysis

A Coordinated Charging Scheduling of Electric Vehicles Considering Optimal Charging Time for Network Power Loss Minimization

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

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