Impacts of plug-in electric vehicles charging on low voltage distribution network

Nour, Morsy; Ramadan, Hassanien; Ali, Abdelfatah; Farkas, Csaba

doi:10.1109/itce.2018.8316650

Cited by 50 publications

(22 citation statements)

References 8 publications

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“…The cross-coupling effects of inductance and shunt capacitance from different phases are not considered. Based on the results deduced in [12], the active and reactive supply power at a random BUS k can be related to the power loss on the distribution line and the grid parameters of BUS k − 1, as shown in Equations (5) and (6). The voltage relationship between BUS k − 1 and BUS k can also be derived as Equation 7:…”

Section: The Voltage-load Variation Relationship Analysismentioning

confidence: 99%

“…Large-scale PEV charging activities bring more challenges to power distribution grids. Papers [5][6][7] use deterministic and stochastic approaches to analyze the PEV charging impact on the distribution networks, including overloading, transformer aging, voltage drop, frequency deviation, and network operating costs. Investigations have been conducted to mitigate some of the aforementioned grid challenges.…”

Section: Introductionmentioning

confidence: 99%

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Electric Vehicle–Grid Integration with Voltage Regulation in Radial Distribution Networks

Cao

Chen

2020

Energies

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In this paper, a vehicle–grid integration (VGI) control strategy for radial power distribution networks is presented. The control schemes are designed at both microgrid level and distribution level. At the VGI microgrid level, the available power capacity for electric vehicle (EV) charging is optimally allocated for charging electric vehicles to meet charging requirements. At the distribution grid level, a distributed voltage compensation algorithm is designed to recover voltage violation when it happens at a distribution node. The voltage compensation is achieved through a negotiation between the grid-level agent and VGI microgrid agents using the alternating direction method of multipliers. In each negotiation round, individual agents pursue their own objectives. The computation can be carried out in parallel for each agent. The presented VGI control schemes are simulated and verified in a modified IEEE 37 bus distribution system. The simulation results are presented to show the effectiveness of the VGI control algorithms and the effect of algorithm parameters on the convergence of agent negotiation.

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Section: The Voltage-load Variation Relationship Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Electric Vehicle–Grid Integration with Voltage Regulation in Radial Distribution Networks

Cao

Chen

2020

Energies

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“…However, in [54], the HV network from the city of Morelia, Mexico, is analysed, where a penetration ratio of 10.5% would not saturate the power lines nor the transformers, nor losses would increase noticeably. In [55], another network, a model from CIGRE, is analysed with up to 50% penetration index, resulting in an increase of both losses and load factor of equipment, but within the established limits. However, voltage at certain nodes would not be acceptable.…”

Section: Uncontrolledmentioning

confidence: 99%

Electric Vehicle into the Grid: Charging Methodologies Aimed at Providing Ancillary Services Considering Battery Degradation

et al. 2019

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The necessity of transport electrification is already undeniable due to, among other facts, global Greenhouse Gas (GHG) emissions and fossil-fuel dependency. In this context, electric vehicles (EVs) play a fundamental role. Such vehicles are usually seen by the network as simple loads whose needs have to be supplied. However, they can contribute to the correct operation of the network or a microgrid and the provision of ancillary services and delay the need to reinforce the power lines. These concepts are referred to as Vehicle-to-Grid (V2G), Vehicle-to-Building (V2B) and Vehicle-to-Home (V2H). In paper, a deep classification and analysis of published charging strategies is provided. In addition, optimal charging strategies must minimise the degradation of the batteries to increase their lifetime, since it is considered that the life of a battery ends when its capacity is reduced by 20% with respect to its nominal capacity. Therefore, an optimal integration of EVs must consider both grid and batteries impact. Finally, some guidelines are proposed for further research considering the current limitations of electric vehicle technology. Thus, these proposed guidelines are focused on V2G optimal management, enabling new business models while keeping economic viability for all parts involved.

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“…However, for the power system, EVs are nonlinear loads whose frequent input and exit will provoke a negative impact on the power quality of the distribution network [8][9][10]. To alleviate the above problems, loads-virtual synchronous motor (VSM) technology has attracted more attention due to its ability to improve stability of frequency and voltage.…”

Section: Introductionmentioning

confidence: 99%

Virtual Synchronous Motor Based-Control of a Three-Phase Electric Vehicle Off-Board Charger for Providing Fast-Charging Service

Yan

Zhang

et al. 2018

Applied Sciences

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This study introduces a three-phase virtual synchronous motor (VSM) control and its possible application for providing fast-charging service from off-board chargers of electric vehicles (EVs). The main circuit of the off-board charger consists of a three-phase voltage source PWM rectifier (VSR) and a resonant LLC zero-voltage-switching converter. In the proposed control approach, VSM-controlled pre-stage VSR emulates the external characteristics of a synchronous motor (SM), simultaneously, droop control based on charging mode in the VSM can satisfy the demand of the EVs constant-current fast-charging; The post-stage DC-DC converter is responsible for stabilizing the DC bus voltage. The feature of this control strategy is that VSM and fast charging control are implemented by the pre-stage converter, which has better coordination. In the MATLAB, the equivalent synchronous grid of the distribution network supplies to the power battery through the off-board charger, and the effectiveness of the presented control is demonstrated by typical working conditions.

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Impacts of plug-in electric vehicles charging on low voltage distribution network

Cited by 50 publications

References 8 publications

Electric Vehicle–Grid Integration with Voltage Regulation in Radial Distribution Networks

Electric Vehicle–Grid Integration with Voltage Regulation in Radial Distribution Networks

Electric Vehicle into the Grid: Charging Methodologies Aimed at Providing Ancillary Services Considering Battery Degradation

Virtual Synchronous Motor Based-Control of a Three-Phase Electric Vehicle Off-Board Charger for Providing Fast-Charging Service

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