Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A probability method for quantitative evaluation of electric vehicle acceptance capability of a power distribution network

An electric vehicle, quantitative evaluation technology, applied in data processing applications, instruments, calculations, etc., can solve the problem of inability to take into account the uncertainty of the charging delay of electric vehicles, the inability to accurately analyze the impact of the load fluctuation capacity of the power grid, the lack of global representation, etc.

Active Publication Date: 2019-05-17
STATE GRID JIANGSU ELECTRIC POWER CO ELECTRIC POWER RES INST +5
View PDF3 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the existing methods use the method of Monte Carlo simulation to generate the uncertain charging demand of electric vehicles. This method tends to lack global representativeness when generating random samples, and cannot take into account charging delays, etc. to charge electric vehicles. The impact of demand uncertainty; when the scale of electric vehicles is large, the calculation speed of this deterministic power flow algorithm based on Monte Carlo sampling will be limited
In addition, some existing methods use the idea of ​​small probability events, and think that the constraints satisfy the '3σ' principle of normal distribution. Receptivity Impact

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 more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A probability method for quantitative evaluation of electric vehicle acceptance capability of a power distribution network
  • A probability method for quantitative evaluation of electric vehicle acceptance capability of a power distribution network
  • A probability method for quantitative evaluation of electric vehicle acceptance capability of a power distribution network

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0123] A 33-node power distribution system such as figure 2 As shown, the system load curve is as Figure 3-5 shown. The line voltage reference value of the system is 12.66kV, the lower limit of the node voltage constraint is 0.90UN, the upper limit of the node voltage is 1.10UN, and UN represents the rated value of the node voltage. The system is connected to electric vehicles at nodes 17 and 27. The parameters of the electric vehicles are shown in the table 1.

[0124]

[0125] Table 1 Electric Vehicle Parameters

[0126] Calculation example Given substation voltages are: 1.00UN, 1.025UN, 1.05UN, the confidence levels are 0.10, 0.15, respectively, according to the present invention to analyze the receiving capacity of the distribution network at t=17, t=18.

[0127] After calculation, the distribution network’s ability to accept electric vehicles is shown in Table 2. Comparing the acceptance capabilities of different substation voltages, different confidence levels, d...

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

No PUM Login to View More

Abstract

The invention discloses a probability method for the quantitative evaluation of the electric vehicle acceptance capability of a power distribution network, and the method comprises the steps of establishing a power distribution network node load semi-invariant and an electric vehicle charging demand semi-invariant through median Latin hypercube sampling, and analyzing the acceptance capability ofthe power distribution network at a given confidence level by utilizing a probability power flow method. The method has the advantages of high calculation efficiency, high simulation precision and high practicability, and is suitable for analyzing the acceptance capability of the power distribution network under the condition of large-scale electric vehicle access.

Description

technical field [0001] The invention relates to a probability method for quantitative evaluation of electric vehicle acceptance capacity of a distribution network, and belongs to the technical field of distribution network acceptance of electric vehicles. Background technique [0002] At present, electric vehicles have become a new direction for the development of the automobile industry due to their advantages of energy saving, environmental protection and low noise. Most electric vehicles will be directly connected to the distribution network for charging. Due to the uncertainty of the charging load of electric vehicles, a large number of electric vehicles The connection of automobiles to the power grid will bring new impacts to the safe and stable operation of the power grid. These impacts include: distribution network node voltage limit, branch current limit, transformer overload, etc. Among them, the voltage limit is the most serious impact of electric vehicle charging ...

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
no application Login to View More
IPC IPC(8): G06Q10/06G06Q50/06
CPCY04S10/50
Inventor 潘志新王建明王守相李春蔡声霞陈兵朱卫平刘利国方鑫吴楠袁晓冬史明明孙健杨雄
Owner STATE GRID JIANGSU ELECTRIC POWER CO ELECTRIC POWER RES INST
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com