In this paper, the battery energy storage technology is applied to the traditional EV (electric vehicle) charging piles to build a new EV charging pile with integrated charging,...
In response to the issues arising from the disordered charging and discharging behavior of electric vehicle energy storage Charging piles, as well as the dynamic characteristics of electric vehicles, we have developed an ordered charging and discharging optimization scheduling strategy for energy storage Charging piles considering time-of-use el...
In this article, a real-time fault prediction method combining cost-sensitive logistic regression (CS-LR) and cost-sensitive support vector machine classification (CS-SVM) is proposed. CS-LR is first used to classify the fault data of smart charging piles, then the CS-SVM is adopted to predict the faults based on the classified data.
energy-electric vehicle charging piles, many scholars at home and abroad have adopted different research * Corresponding author: [email protected] .cn methods. It can be seen that in terms of charging pile layout optimization, there are many algorithms that can be used, the relevant charging pile layout optimization
In-depth analysis of the reliability impact of the internal structural function modules of the DC charging pile, and the minimum cut set method was used to calculate the failure index of the
The experimental results show that the accuracy of this method in preventive maintenance decision-making for electric vehicle charging piles can reach 98%, with an average preventive maintenance decision-making time of
The results of scenario simulation indicate that the increase in EVs will reinforce the peak value of the total power load, while increasing private charging piles and the participation rate of
According to the reliability problems of DC charging piles, in this paper, we first put forward several indicators which can describe the reliability of DC charging piles, and then we explain the hardware system structure of DC charging piles, at the same time we analyse the failure rate
For example, interoperability function defects lead to a charging pile''s failure to provide effective protection; an excessive output current of the charging pile can easily damage the structure of the electric vehicle battery system; insufficient IP protection levels of the system can easily cause a short circuit in the charging pile or even electric shock and other accidents
The test results show that the single-phase intelligent watt hour meters produced by the four manufacturers can meet the reliability requirements such as annual failure rate
Most of the charging piles run in harsh environments such as outdoor for a long time, and are prone to reliability problems, which has become one of the bottlenecks affecting the development of new energy automobile industry. Taking the classic DC charging pile as an example, the reliability index of the DC charging pile is proposed. In-depth analysis of the reliability impact of
In response to the issues arising from the disordered charging and discharging behavior of electric vehicle energy storage Charging piles, as well as the dynamic characteristics of electric vehicles, we have developed an ordered charging and discharging optimization scheduling strategy for energy storage Charging piles considering time-of-use electricity prices.
The energy storage charging pile achieved energy storage benefits through charging during off-peak periods and discharging during peak periods, with benefits ranging
In-depth analysis of the reliability impact of the internal structural function modules of the DC charging pile, and the minimum cut set method was used to calculate the failure index of the DC charging pile. The calculation example calculates the reliability indicators such as the failure rate of the charging pile through specific parameters
In response to the issues arising from the disordered charging and discharging behavior of electric vehicle energy storage Charging piles, as well as the dynamic
With the popularization of new energy electric vehicles (EVs), the recommendation algorithm is widely used in the relatively new field of charge piles. At the same time, the construction of charging infrastructure is facing
The test results show that the single-phase intelligent watt hour meters produced by the four manufacturers can meet the reliability requirements such as annual failure rate index. The accelerated test theory is applied to the reliability life and failure rate evaluation of intelligent electric energy meter to shorten the test time
Processes 2023, 11, 1561 3 of 15 to a case study [29]; in order to systematically explain the pretreatment process, leaching process, chemical purification process, and industrial applications
In this paper, the battery energy storage technology is applied to the traditional EV (electric vehicle) charging piles to build a new EV charging pile with integrated charging, discharging, and storage; Multisim software is used to build an EV charging model in order to simulate the charge control guidance module. On this basis, combined with
New energy electric vehicles will become a rational choice to achieve clean energy alternatives in the transportation field, and the advantages of new energy electric vehicles rely on high energy storage density batteries and efficient and fast charging technology. This paper introduces a DC charging pile for new energy electric vehicles. The DC charging pile
The experimental results show that the accuracy of this method in preventive maintenance decision-making for electric vehicle charging piles can reach 98%, with an average preventive maintenance decision-making time of 1.6 s for load piles. At the same time, the risk probability value and load loss value are effectively controlled.
Firstly, the characteristics of electric load are analyzed, the model of energy storage charging piles is established, the charging volume, power and charging/discharging timing...
In this article, a real-time fault prediction method combining cost-sensitive logistic regression (CS-LR) and cost-sensitive support vector machine classification (CS-SVM)
Moreover, a coupled PV-energy storage-charging station (PV-ES-CS) is a key development target for energy in the future that can effectively combine the advantages of photovoltaic, energy storage and electric vehicle
Firstly, the characteristics of electric load are analyzed, the model of energy storage charging piles is established, the charging volume, power and charging/discharging
The construction of charging infrastructure needs to keep pace with the rapid growth of electric vehicle sales. In contrast to the increased focus and growth of public charging stations
According to the reliability problems of DC charging piles, in this paper, we first put forward several indicators which can describe the reliability of DC charging piles, and then we explain the hardware system structure of DC charging piles, at the same time we analyse the failure rate of each modules by using the method of fault tree, and
In this paper, the battery energy storage technology is applied to the traditional EV (electric vehicle) charging piles to build a new EV charging pile with integrated charging,
The energy storage charging pile achieved energy storage benefits through charging during off-peak periods and discharging during peak periods, with benefits ranging from 501.04 to 1467.78 yuan. At an average demand of 50 % battery capacity, with 50–200 electric vehicles, the cost optimization decreased by 18.2%–25.01 % before and after
The simulation results of this paper show that: (1) Enough output power can be provided to meet the design and use requirements of the energy-storage charging pile; (2) the control guidance circuit can meet the requirements of the charging pile; (3) during the switching process of charging pile connection state, the voltage state changes smoothly.
Design of Energy Storage Charging Pile Equipment The main function of the control device of the energy storage charging pile is to facilitate the user to charge the electric vehicle and to charge the energy storage battery as far as possible when the electricity price is at the valley period.
From the perspective of failure generation and development, the factors affecting the failure probability of electric vehicle charging piles can be divided into two categories: one is the cumulative factor of service life, including the aging (material fatigue aging and wear) brought by the increase of service life.
Combined with the fault degree, maintenance experience, and expert analysis of the charging pile, the state classification strategy is given. Each indicator of the charging pile is standardized according to the threshold level of the operating state.
Combining Figs. 10 and 11, it can be observed that, based on the cooperative effect of energy storage, in order to further reduce the discharge load of charging piles during peak hours, the optimized scheduling scheme transfers most of the controllable discharge load to the early morning period, thereby further reducing users' charging costs.
The main function of the control device of the energy storage charging pile is to facilitate the user to charge the electric vehicle and to charge the energy storage battery as far as possible when the electricity price is at the valley period. In this section, the energy storage charging pile device is designed as a whole.
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