Survey on assessment of power quality cost in Shanghai China

Zhong, Qing; Huang, Wei; Tao, Shun; Xiao, Xiangning

doi:10.1109/pesgm.2014.6938832

Cited by 10 publications

(6 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This new opportunity is also relevant taking into account that the derived costs caused by power quality problems are substantially high around the world [37][38] [39]. Therefore, the EV can be used as a dispersed and dynamic active power filter within the power grid, demonstrating that it can be an added value for supporting power quality.…”

Section: On-board Ev Bcsmentioning

confidence: 99%

The Role of Off-Board EV Battery Chargers in Smart Homes and Smart Grids: Operation with Renewables and Energy Storage Systems

Monteiro

Afonso

Sousa

2020

Electric Vehicles in Energy Systems

View full text Add to dashboard Cite

Concerns about climate changes and environmental air pollution are leading to the adoption of new technologies for transportation, mainly based on vehicle electrification and the interaction with smart grids, and also with the introduction of renewable energy sources (RES) accompanied by energy storage systems (ESS). For these three fundamental pillars, new power electronics technologies are emerging to transform the electrical power grid, targeting a flexible and collaborative operation. As a distinctive factor, the vehicle electrification has stimulated the presence of new technologies in terms of power management, both for smart homes and smart grids. As the title indicates, this book chapter focuses on the role of off-board EV battery chargers in terms of operation modes and contextualization for smart homes and smart grids in terms of opportunities. Based on a review of on-board and off-board EV battery charging systems (EV-BCS), this chapter focus on the off-board EV-BCS framed with RES and ESS as a dominant system in future smart homes. Contextualizing these aspects, three distinct cases are considered: (1) An ac smart home using separate power converters, according to the considered technologies; (2) A hybrid ac and dc smart home with an off-board EV-BCS interfacing RES and ESS, and with the electrical appliances plugged-in to the ac power grid; (3) A dc smart home using a unified

show abstract

Section: On-board Ev Bcsmentioning

confidence: 99%

The Role of Off-Board EV Battery Chargers in Smart Homes and Smart Grids: Operation with Renewables and Energy Storage Systems

Monteiro

Afonso

Sousa

2020

Electric Vehicles in Energy Systems

View full text Add to dashboard Cite

show abstract

“…Aiming at this problem, Zhou et al [15] established a model corresponding to the compressive treatment device and the related benefit measurement and clarified the correlation between economic benefits and device performance using the net present value method. Zhong et al [16] used direct and indirect analysis methods for PQ economic investigation and concluded that a more precise conclusion could be obtained through direct analysis methods under the preconditions of data analysis detection and statistical analysis of data information. Yuan et al [17] introduced a basic framework for the economic analysis of PQ in public distribution networks, detailed the evaluation method of PQ economic loss, and carried out a specific analysis using distribution network data.…”

Section: Introductionmentioning

confidence: 99%

Dynamics Power Quality Cost Assessment Based on a Gradient Descent Method

Zhang,

Sheng,

et al. 2024

Energies

View full text Add to dashboard Cite

The escalating demand for power load is increasingly prone to triggering power quality (PQ) issues, leading to severe economic losses. Aiming at reducing the economic losses, this paper focuses on the coordinated relationship between PQ and economic costs. Firstly, a multilayer multiple linear stepwise regression method is employed to screen PQ indicators, identifying harmonic and voltage deviation as the primary influencing factors of PQ. Secondly, a gradient descent optimization algorithm based on the Least Absolute Shrinkage and Selection Operator (LASSO) is proposed, enabling rapid computation of the minimum PQ cost. Finally, through validations of two case studies, the results confirm that the proposed method can rapidly calculate the minimum PQ cost based on real-time load demands, enabling the dynamic adjustment of PQ cost to meet the evolving needs of power system development.

show abstract

“…Besides exchange active power with the grid, the EV charger can also be designed and controlled to compensate power quality problems, mainly, the current harmonics and the power factor of the electrical installation where it is plugged-in. This new challenge is more relevant knowing that it is not necessary to use any energy from the EV battery, and that the derivative costs from power quality problems are considerable high around the world [19] [20] [21]. Thus, the EV can be controlled as a distributed and dynamic active power filter throughout the power grid, representing an added value to support grid power quality.…”

Section: Introductionmentioning

confidence: 99%

Improved vehicle-for-grid (iV4G) mode: Novel operation mode for EVs battery chargers in smart grids

Monteiro

Pinto

Afonso

2019

International Journal of Electrical Power & Energy Systems

View full text Add to dashboard Cite

The experimental validation of a novel operation mode for electric vehicles (EVs) to support the grid power quality is presented. The proposed operation mode, denominated improved vehicle-for-grid (iV4G), is directly associated with the EVs operation aiming the compensation of power quality problems associated with current harmonic distortion and reactive power, improving the total power factor of the electrical installation. Simultaneously with the proposed iV4G, where the EV injects current harmonics and provides reactive power, the EV can exchange active power with the grid (grid-to-vehicle, G2V, to charge the batteries or vehicle-to-grid, V2G, to deliver energy back to the power grid). In this paper, the proposed iV4G operation mode is experimentally validated with a developed EV battery charger prototype connected to an electrical installation of 230 V, 16 A, 50 Hz. The control strategies of the iV4G operation mode and the used prototype are described in detail along the paper. The achieved results confirm the feasibility and good performance of the proposed iV4G operation mode, working alone, and also when associated with the G2V and V2G operating modes.

show abstract

Survey on assessment of power quality cost in Shanghai China

Cited by 10 publications

References 9 publications

The Role of Off-Board EV Battery Chargers in Smart Homes and Smart Grids: Operation with Renewables and Energy Storage Systems

The Role of Off-Board EV Battery Chargers in Smart Homes and Smart Grids: Operation with Renewables and Energy Storage Systems

Dynamics Power Quality Cost Assessment Based on a Gradient Descent Method

Improved vehicle-for-grid (iV4G) mode: Novel operation mode for EVs battery chargers in smart grids

Contact Info

Product

Resources

About