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A method for electric vehicles to participate in grid voltage regulation and scheduling considering behavior randomness

An electric vehicle, random technology, applied in electric vehicle charging technology, electric vehicle, AC network voltage adjustment and other directions, can solve the problems of lack of guidance in practical application, different time and initial power, small adjustment force, etc., to reduce The effect of economic expenses, protection of economic interests, and reduction of negative impacts

Inactive Publication Date: 2019-07-12
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in fact, a single electric vehicle does little to regulate the grid voltage, and it is more effective to participate in grid voltage regulation by dispatching electric vehicle fleets; in addition, the daily behavior of electric vehicle users is uncertain, and each electric vehicle connected The time and initial power of the grid varies, and the minimum power required to meet the trip when it leaves is also different
Therefore, the current research lacks effective guidance for practical application

Method used

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  • A method for electric vehicles to participate in grid voltage regulation and scheduling considering behavior randomness
  • A method for electric vehicles to participate in grid voltage regulation and scheduling considering behavior randomness
  • A method for electric vehicles to participate in grid voltage regulation and scheduling considering behavior randomness

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Embodiment

[0071] figure 1 It is the topological structure diagram of the grid system connected to electric vehicles.

[0072] According to the load situation in one day and the general commuting time of electric vehicles, in this embodiment, the charging station in a residential area selects the scheduling time for electric vehicles from 18:00 in the evening to 6:00 in the morning of the next day, and the time interval is 1 hour, and the number of electric vehicles is 150. The grid topology corresponding to the residential area is as follows: figure 1 As shown, there is an 8-bus structure including distributed power sources, basic loads, and electric vehicle charging stations, where bus 1 is used as a reference point, and its voltage value is the output voltage of the transformer 220V.

[0073] Combine below figure 1 , a method for electric vehicles participating in power grid voltage regulation and scheduling considering behavioral randomness in the present invention is described in...

example

[0159] According to Table 3, from 18:00 to 6:00 the next day, the statistical results of the number of electric vehicles arriving in each time interval, it can be found that no electric vehicles arrive after 24:00, and electric vehicles begin to arrive at 4:00 in the morning. The cars left, and a total of 12 vehicles left before the end of the dispatch, and it was stipulated that these 12 vehicles would only be charged. For the remaining electric vehicles, starting from the connection of the electric vehicles to the charging station, the overall process of dispatching the electric vehicles by the charging station is as follows: Figure 9 shown.

[0160] Firstly, obtain relevant data such as basic load, line impedance, and market electricity price from the power grid, and calculate the reactive power incentive price proportional coefficient through the designed reactive power incentive price bidding process; the first dispatch starts at 18:00, and at this time st=1, count the ...

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Abstract

The invention discloses a method for electric vehicles to participate in power grid voltage regulation and scheduling considering behavior randomness, fully considers the randomness of electric vehicle user behavior, and satisfies grid voltage stability, electric vehicle charging requirements, and maximizes the economic benefits of electric vehicle charging stations. By designing a reactive power price mechanism that balances the economic benefits of both charging stations and electric vehicle users, the rational dispatch of electric vehicles connected to the grid can be realized, which can effectively improve the stability of grid voltage and greatly increase the economic benefits of electric vehicle charging stations. , and can significantly reduce the economic expenditure of electric vehicle users.

Description

technical field [0001] The invention belongs to the technical field of electric vehicles, and more specifically relates to a method for electric vehicles to participate in power grid voltage regulation and scheduling considering behavior randomness. Background technique [0002] Due to the increasingly serious problems of fossil fuel shortage and environmental pollution, electric vehicles using renewable and clean energy have been more and more widely used. A large number of electric vehicle charging will bring a new round of rapid load growth, which will increase the huge power supply pressure for the power system with increasing peak-valley difference in power load. [0003] V2G (Vehicle-to-grid) technology refers to the two-way flow of energy and information between electric vehicles and the grid. In this mode, electric vehicles are not only the electricity load of the grid, but also become the power supply of the grid to feed power to the grid or serve as energy storage...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/14H02J3/16B60L53/64B60L53/63
CPCH02J3/14H02J3/16B60L53/63B60L53/64H02J2310/64H02J2203/20Y04S20/222Y04S30/12Y04S30/14Y02B70/3225Y02E40/30Y02T10/7072Y02T90/167Y02T10/70Y02T90/12
Inventor 邹见效吴鑫鑫吴春燕李立英彭超徐红兵
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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