V2G-oriented electric vehicle bidirectional electric energy metering method

A technology for electric vehicles and electric energy metering, which is applied in the direction of measuring electric variables, measuring devices, complex mathematical operations, etc., and can solve problems such as the inability to realize charging and discharging two-way electric energy metering
CN112255453AActive Publication Date: 2021-01-22UNIV OF SCI & TECH BEIJING
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
UNIV OF SCI & TECH BEIJING
Publication Date
2021-01-22

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Abstract

The invention provides a V2G-oriented electric vehicle bidirectional electric energy metering method, and belongs to the field of electric vehicle electric energy metering. The method comprises the following steps: establishing a bidirectional interaction model of an electric vehicle connected to a power grid, wherein the bidirectional interaction model comprises power grid voltage u(t), power grid line loads Zl1, Zl2 and Zl3, other loads Z in the power grid, an electric vehicle bidirectional inverter, an electric vehicle battery electromotive force E and an electric vehicle internal load Zev,the power grid voltage is sequentially connected with the Zl2 and the Zl3 in series and then connected into the electric vehicle bidirectional inverter, the Zev and the E are connected to the two ends of the electric vehicle bidirectional inverter in parallel after being connected in series, and the Z and the Zl1 are connected to the two ends of the power grid voltage in parallel after being connected in series; and determining the electric energy metered during charging and the electric energy metered during discharging of the electric vehicle under the distortion signal according to the established bidirectional interaction model. According to the invention, bidirectional electric energy metering of the electric vehicle during charging and discharging under distortion signals can be realized.
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Description

technical field

[0001] The invention relates to the field of electric energy metering for electric vehicles, in particular to a V2G-oriented two-way electric energy metering method for electric vehicles. Background technique

[0002] The environmental and resource problems caused by traditional fuel vehicles have become increasingly prominent. Countries have successively introduced strict measures to restrict fuel vehicles. New energy vehicles have played a role in alleviating the pressure of oil shortages, reducing vehicle exhaust emissions, promoting the transformation and upgrading of the automobile manufacturing industry, and sustainable development of the transportation industry. play an important role. However, the connection of large-scale electric vehicles to the power grid has also brought great challenges to the operation of the power grid.

[0003] Vehicle to Grid (V2G) describes a system in which electric vehicles are connected to the grid for bidirectional char...

Claims

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