A method and device for constructing a v2b and v2g coexistence application scenario model
A construction method and application scenario technology, which is applied in the construction field of V2B and V2G coexistence application scenario models, can solve problems such as management or improper management, failure to meet user charging needs, and increase building electricity costs.
Active Publication Date: 2020-09-29
ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD +1
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Problems solved by technology
[0004] If there is a lack of management or improper management of the charging and discharging of electric vehicles, it may not only fail to meet the charging needs of users, but may also increase the electricity cost of buildings.
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[0039] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.
[0040] Such as figure 1 As shown, the garage of a certain building can provide charging for electric vehicles, and at the same time support the application scenario of electric vehicle V2B; electric vehicles can also directly feed power to the grid, supporting the application scenario of V2G.
[0041] In the implementation case of the present invention, taking six electric vehicles parked in the garage of the building for charging as an example, the model is modeled and the optimization result is calculated according to the construction method and device for the V2B and V2G coexistence application scene model described above.
[0042] S1. First build a V2B and V2G coexistence application scenario model, including establishing an electric vehicle charging and discharging model based on the basic characteristics of the electric vehicle battery...
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The invention discloses a construction method and a construction device of a V2B and V2G coexisting application scenario model. The construction method comprises the steps of: establishing an electricvehicle charging and discharging model according to basic characteristics of an electric vehicle battery; analyzing a relationship between a state of charge at the end of battery charging and a userexpected state of charge according to electricity utilization demand of a user; evaluating battery loss according to the switching between charge and discharge states of the battery; establishing a constraint condition according to a condition that V2B scenario load is greater than 0; establishing an objective function according to the optimization of building electricity consumption costs, wherein the objective function satisfies a relationship among the electric vehicle charging and discharging model, the state of charge at the end of battery charging and the user expected state of charge; and considering the battery loss and the constraint condition, and calculating a model optimal solution according to the determined model by means of the device. The construction method and construction device can provide technical support for charging and discharging management of electric vehicles parked in a parking lot of a building in the future, and calculate and optimize the electricity consumption cost of the building.
Description
technical field [0001] The present invention relates to the field of electric power management in electric power systems, in particular to a method and device for constructing a V2B and V2G coexistence application scenario model. Background technique [0002] As a clean and efficient means of transportation, electric vehicles are becoming more and more widely used, and they are also a key load growth point for current and future power grids. With the development of battery discharge technology, in the future, in addition to serving as a charging load, electric vehicles can also act as a mobile energy storage component to provide external power, and perform different charging and discharging behaviors driven by power price signals. [0003] When an electric car parked in the parking lot of a building is connected to a charging pile, the electric car can not only charge the electric car, but also supply power to the load in the building (V2B: Vehicle-to-Building, that is, the ...
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IPC IPC(8): G06F30/20H02J3/32H02J7/00G06F111/04G06F111/10
CPCH02J3/32H02J7/0022H02J2203/20
Inventor 毛田周保荣姚文峰徐乾耀王嘉阳苏祥瑞
Owner ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD