A control method for electric vehicles participating in power grid frequency regulation based on v2g technology
A technology for electric vehicles and control methods, applied in electric vehicles, current collectors, power management, etc., can solve problems such as frequency instability and lack of inertia in power systems
Inactive Publication Date: 2020-02-07
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0005] The technical problem to be solved by the present invention is to solve the problems of lack of inertia and frequency instability in the power system caused by a large number of electric vehicles connected to the network and the application of large-scale power electronic devices, combined with the advanced virtual synchronous machine control algorithm at the present stage, to realize the participation of electric vehicles in power grid frequency regulation functions, including primary frequency modulation and secondary frequency modulation without communication
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0049] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0050] Aiming at the problems of lack of inertia and unstable operating frequency in the grid caused by a large number of electric vehicles connected to the grid and the application of large-scale power electronic devices, the present invention provides a V2G technology-based control method for bidirectional charging and discharging of electric vehicles participating in grid frequency regulation, which can be used for power grids. Provide inertia and frequency support to realize frequency adjustment without difference.
[0051] The hardware power circuit that the present invention adopts is as figure 1 As shown, the two-stage power conversion circuit includes a front-stage PWM rectifier circuit, a supporting LC filter and a Buck-Boost DC conversion circuit, and the two circuits are connected through a DC bus capacitor. Among them, the PWM rectifier circuit r...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a control method for an electric automobile participating in grid frequency modulation based on V2G technology. A charge / discharge circuit is a two-stage converter circuit, which comprises a PWM rectification circuit and a matched LC filter and a Buck-Boost conversion circuit, wherein the two circuits are connected through a DC bus capacitor; the PWM rectification circuit rectifies a network voltage into a 700V DC voltage, AC-side harmonic waves are filtered through the LC filter, and the PWM rectification circuit is connected with a power grid through a network-side inductor; and the Buck-Boost conversion circuit converts the 700V DC voltage into a 60V DC voltage, and is connected with an electric automobile directly. The method adopts an AC / DC control module and a DC / DC control module, and meanwhile, enables a frequency modulation control module to be embedded into the DC / DC control module; and charge and discharge power reference values of a power battery are given through the frequency modulation control module, and a current transformer makes a response to realize primary and secondary frequency modulation of the power grid.
Description
technical field [0001] The invention belongs to the technical field of electric vehicles, and the stable operation and control of power systems, and in particular relates to a control method for electric vehicles participating in power grid frequency modulation based on V2G (Vehicle to Grid) technology, which considers the stability of power grid frequency operation and the lack of inertia of power electronic devices . Background technique [0002] The global energy crisis and environmental pollution have promoted the development of the electric vehicle industry in countries all over the world. The increasing number of electric vehicles brings great challenges and opportunities to the construction and development of power systems. On the one hand, a large number of electric vehicles are connected to the power grid as new loads for centralized charging. If they are not managed and guided, the peak power consumption of the power grid will increase, and the load on the power g...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/24H02J3/32B60L55/00
CPCB60L55/00H02J3/24H02J3/32Y02T10/70Y02T10/72
Inventor 刘其辉逯胜建
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)