Multi-source complementary charging method for hybrid parking lot based on flexible charging of electric vehicles
An electric vehicle and charging method technology, which is applied in the field of multi-source complementary charging of hybrid parking lots, can solve the problems of grid impact and harm in regulation mode, and achieve the effects of reducing huge impact, accelerating promotion, and improving safety and reliability.
Active Publication Date: 2021-06-18
CHINA THREE GORGES UNIV
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However, an incorrect control method of a large-scale flexible charging system will cause a huge impact on the power grid, and even bring certain harm in serious cases. Therefore, when designing a flexible charging system, it is necessary to comprehensively and comprehensively consider the coordination of the benefit chain and power system stability
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[0061] According to the national policy, the power price and time of each region are different. The definition of this calculation example is: peak power time period t 1 9:00-14:00 and 17:00-21:00, valley power time period t 2 0:00-9:00, 14:00-17:00 and 21:00-24:00. low electricity price p 1 and peak electricity price p 2 They are 0.576 yuan and 1.136 yuan respectively. The pricing coefficient α of the slow charging area and the pricing coefficient β of the fast charging area are 1.2 and 1.5 respectively. The fast charging and slow charging load statistics and demand conditions of the parking lot of this system are shown in the figure, and the maximum capacity of the battery W is determined accordingly. b = 600kWh and discharge power P b =50kw. Rated charging power P of the vehicle in the fast charging area f =30kW, the rated charging power P of the vehicle in the slow charging area s = 10 kW. In this system, the grid can withstand the maximum power P Gmax = 200kW. ...
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The hybrid parking lot multi-source complementary charging method based on the flexible charging of electric vehicles includes the following steps: according to the electricity consumption policy of each region, obtain information such as the time period and price of the peak and trough of electricity consumption; according to the fast charging load statistics of the parking lot and demand conditions, it is planned to set the battery capacity and its discharge power; use the information collection device connected to the system to obtain real-time status information of all vehicles in the fast / slow charging area, and predict the charging power in the fast / slow charging area; The electrical status of the input system grid and the charging area; set different charging and discharging modes, and flexibly select different charging and discharging modes based on the change of system operating status; based on the contribution of charging and discharging, reasonably calculate the electricity cost of the charging car. The present invention is a hybrid parking lot multi-source complementary charging method based on the flexible charging of electric vehicles, which is used to play a role of load backup, cooperate with the power grid to realize peak-shaving and valley-filling effects, and enable service providers and users to obtain greater economic benefits at the same time .
Description
technical field [0001] The invention relates to the field of flexible charging of new energy vehicles, in particular to a multi-source complementary charging method for hybrid parking lots based on flexible charging of electric vehicles. Background technique [0002] With the rapid development of new energy technology, the country and society are gradually increasing the promotion of electric vehicles, and the penetration rate of electric vehicles is getting higher and higher, resulting in many electric vehicle charging parking lots. However, the centralized charging of electric vehicles also brings many problems that need to be solved urgently. Such as: the impact on the power grid, the effective use of new energy, the optimal charging dispatch of electric vehicles, etc. Therefore, it is of great significance to use the flexible charging technology of electric vehicles to compensate users for electricity charges and improve the stability of the power system. [0003] At p...
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IPC IPC(8): B60L53/63B60L53/64B60L53/62
CPCB60L53/64B60L53/665Y02T10/70Y02T10/7072Y02T90/12
Inventor 李振兴龚旸黄悦华邓靖雷李振华邱立翁汉琍
Owner CHINA THREE GORGES UNIV