Direct-current power distribution network control method for virtual inertia control strategy regulation and control of electric vehicle
A technology of DC distribution network and electric vehicles, which is applied in the direction of electric vehicles, DC network circuit devices, load balance in DC networks, etc., to achieve the effects of satisfying system stability, smoothing load curves, and reducing negative impacts
Pending Publication Date: 2020-06-23
SHANGHAI UNIVERSITY OF ELECTRIC POWER
View PDF2 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
In the existing literature, the electric vehicle fast charging technology using the virtual synchronous motor control technology is proposed to provide inertial support for the distribution network, and some literatures also propose a strategy to control the flow of electric vehicles and distribution power, which can effectively use electric vehicles for distribution. Grid voltage regulation, but the existing research has not fully considered the difference in the inertia provided by the electric vehicle when it participates in the grid voltage regulation due to the different state of charge. Distribution network control method has major social and economic benefits
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 1
[0062] The DC distribution network dominated by power electronic converters is a low-inertia network. The voltage is easily affected by factors such as frequent load switching and distributed energy output fluctuations, which endanger the safe and stable operation of the DC distribution network. The main application of virtual inertia control is In the AC distribution network, there are few studies on the DC distribution network, and most of them study the improvement of the inertia of the system from the perspective of energy storage, which makes the increase of the operating cost of the entire distribution network unfavorable for its economic operation. With the large increase of electric vehicles, the load fluctuation of the DC distribution network has been exacerbated, and the peak load and power consumption peaks generated by it have a high overlap. If electric vehicles are not considered as a means of grid voltage regulation, DC power distribution will be seriously affecte...
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 direct-current power distribution network control method for virtual inertia control strategy regulation and control of an electric vehicle. The method comprises: establishing a generator mathematical model to simulate inertia of the generator mathematical model; constructing a virtual inertia control strategy of the electric vehicle charging and discharging interface converter; establishing a small signal model to realize quantitative analysis; adopting a hysteresis control strategy to enable the electric vehicle to participate in voltage regulation of a direct-current power distribution network; and achieving the control of the direct-current power distribution network is realized. The inertia is provided for a power grid, so that bus voltage drop caused by power fluctuation is effectively stabilized; and the stability of the power grid is improved, the inertia capacity provided by the control strategy is adjusted according to different SOC states, the configuration number and cost of energy storage equipment in the direct-current power distribution network are greatly reduced while the service life of the battery of the electric vehicle is prolonged, and the economy of the direct-current power distribution network is improved.
Description
technical field [0001] The invention relates to the technical field of DC distribution network control, in particular to a DC distribution network control method regulated by an electric vehicle virtual inertia control strategy. Background technique [0002] With the global environmental problems and energy crisis becoming more and more prominent, the continuous progress of renewable energy technology and energy storage technology has also promoted a new round of development of distribution network. Compared with the AC distribution network, the DC distribution network has advantages such as no frequency regulation and reactive power compensation, high system stability, easy access to distributed energy sources, and high energy conversion efficiency. At the same time, in the power distribution link, there are With the existence of more DC loads and energy storage equipment, the DC distribution network does not need to perform frequent DC / AC and AC / DC conversions, which can r...
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 IPC IPC(8): H02J1/00H02J1/14B60L55/00B60L58/10B60L58/12
CPCH02J1/00H02J1/14B60L55/00B60L58/10B60L58/12Y02T10/70
Inventor 毛玲王璨朱勇杰孟伟赵晋斌
Owner SHANGHAI UNIVERSITY OF ELECTRIC POWER