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Electric vehicle charging pile health state assessment method based on digital twinning

A technology of electric vehicles and health status, which is applied in data processing applications, special data processing applications, instruments, etc., can solve the problems of lack of long-term monitoring data and insufficient running time in the evaluation of operating health status, so as to achieve effective evaluation results and reduce differences Effect

Pending Publication Date: 2021-08-03
北京首都机场节能技术服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] With the widespread investment of electric vehicle charging piles, the running time is not long enough, and the lack of long-term monitoring data for the evaluation of their operating health status has become a problem that needs to be solved

Method used

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  • Electric vehicle charging pile health state assessment method based on digital twinning
  • Electric vehicle charging pile health state assessment method based on digital twinning
  • Electric vehicle charging pile health state assessment method based on digital twinning

Examples

Experimental program
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Embodiment 1

[0070] A method for evaluating the state of health of an electric vehicle charging pile based on a digital twin is characterized in that it comprises the following steps:

[0071] Step1: According to the charging pile mechanism, the charging pile is divided into electrical performance evaluation index C and safety performance evaluation index S, and the electrical performance evaluation index C and safety performance evaluation index S include several sub-indicators respectively;

[0072] Step2: According to the required assessment of the charging pile capacity, topology, operating mechanism, and surrounding environment, establish a digital twin model of the charging pile;

[0073] Step3: Use the Monte Carlo method to perform multiple simulations on the digital twin model of the charging pile, and obtain the health status index results evaluated by simulation;

[0074] Step4: Use a variety of evaluation methods to evaluate the weights of the sub-indices of the electrical perfo...

Embodiment 2

[0098] The difference between embodiment 2 and embodiment 2 is that on the basis of embodiment 1, a condition for judging the health state of an electric vehicle charging pile is designed to make a more accurate judgment.

[0099] Specifically, the conditions for determining the health status of electric vehicle charging piles in Step6 include:

[0100] (1) When the health status of the electric vehicle charging pile is healthy, the following criteria are met:

[0101]

[0102] Among them, a is the index threshold value of the health state of the electric vehicle charging pile as a healthy indicator, which is a constant, and y cp Indicates any sub-index value of the electrical performance evaluation index C, y sq Indicates any sub-index value of the safety performance evaluation index S, δ is a limiting factor, which is a constant between 0-1;

[0103] (2) When the health status of the electric vehicle charging pile is sub-healthy, the following criteria are met:

[0104...

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Abstract

The invention provides an electric vehicle charging pile health state evaluation method based on digital twinning, and the method comprises the following steps: Step 1, constructing an electric vehicle charging pile health state evaluation index system according to a charging pile mechanism; Step 2, establishing a charging pile digital twinborn model for the charging pile; Step 3, adopting a Monte Carlo method to simulate the digital twin model of the charging pile for multiple times to obtain a health state index result evaluated by simulation; Step 4: evaluating the index weight by adopting multiple evaluation methods, and calculating the combination weight of the index based on a consistency combination algorithm; Step 5, calculating a health state evaluation index result of the electric vehicle charging pile; and Step 6, rating the health state of the electric vehicle charging pile based on the judgment condition of the health state of the electric vehicle charging pile, and taking corresponding measures. Based on the charging pile digital twin model and the consistency combinatorial algorithm, the health state of the electric vehicle charging pile in medium and long-term operation is evaluated by using the health state judgment condition of the electric vehicle charging pile.

Description

technical field [0001] The invention relates to the field of energy efficiency management control methods, in particular to a method for evaluating the health status of electric vehicle charging piles based on digital twins. Background technique [0002] With the construction of a large number of electric charging piles in my country, the health status of charging piles has important guiding significance for the service life, operation and maintenance cycle, and safety assessment of charging piles. [0003] 3.1 Electric Vehicle Charging Pile [0004] As a power converter between the power grid and the electric vehicle battery, the electric vehicle charging pile can charge one or more of lithium-ion batteries, nickel-metal hydride batteries, and valve-regulated lead-acid batteries. According to different types of output current It is divided into AC charging pile and DC charging pile. [0005] The AC charging pile is a power supply device that provides AC power for the on-b...

Claims

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Application Information

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IPC IPC(8): G06Q10/06G06Q50/06G06F30/20
CPCG06Q10/06393G06Q50/06G06F30/20
Inventor 董丽燕李雪刚傅博孙国君杨林青李缘春
Owner 北京首都机场节能技术服务有限公司