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Fuzzy comprehensive evaluation method-based residential area electric vehicle charging demand modeling method and charging system

A fuzzy comprehensive evaluation, electric vehicle technology, applied in the direction of instruments, data processing applications, resources, etc., can solve problems such as the owner's inability to leave in time, affecting the efficiency of charging, and the quality of charging services, and achieve the effect of refined modeling processing.

Pending Publication Date: 2021-05-07
NANJING INST OF TECH
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AI Technical Summary

Problems solved by technology

However, this literature does not consider the phenomenon of queuing up at charging places in residential areas due to insufficient charging facilities and the phenomenon that some car owners cannot leave the charging parking space in time after charging, which will affect the efficiency of charging and the quality of charging services.

Method used

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  • Fuzzy comprehensive evaluation method-based residential area electric vehicle charging demand modeling method and charging system
  • Fuzzy comprehensive evaluation method-based residential area electric vehicle charging demand modeling method and charging system
  • Fuzzy comprehensive evaluation method-based residential area electric vehicle charging demand modeling method and charging system

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Embodiment Construction

[0088] Such as figure 1 As shown, the present invention discloses a method for modeling the charging demand of electric vehicles in residential areas based on the fuzzy comprehensive judgment method.

[0089] First build the power battery model:

[0090]

[0091] In the formula: P C Charging power for electric vehicles, P max For constant charging power during constant current phase, T td is the end time of the constant current phase, T m is the end time of the constant voltage phase, and λ is the power decay time constant.

[0092] Secondly, establish the probability model of arriving at the residential area and daily mileage:

[0093] The arrival time of the car owner in the residential area obeys a normal distribution:

[0094]

[0095] In the formula: μ s and σ s are the mean and standard deviation of the time for car owners to return to the residential area, respectively.

[0096] The owner’s daily mileage follows a lognormal distribution:

[0097]

[0...

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Abstract

The invention relates to the technical field of electric vehicle charging, and provides a Fuzzy comprehensive evaluation method-based residential area electric vehicle charging demand modeling method and a charging system, and the method comprises the steps of building a charging model of a power battery of a single electric vehicle; extracting the charging starting time and daily mileage of each electric vehicle by adopting a Monte Carlo method, and judging the charging selection of a vehicle owner by utilizing a fuzzy comprehensive evaluation method aiming at the queuing waiting problem caused by insufficient number of charging piles and the charging facility waste phenomenon caused by the fact that the vehicle owner cannot leave a charging parking space in time after finishing the charging service, thus obtaining the charging response time of each vehicle owner. According to the invention, the influence of the residual charge state and the queuing waiting time on the charging selection behavior of the vehicle owner can be fully considered, and a basis is provided for safe and stable operation of the power distribution network and reasonable layout of charging facilities.

Description

technical field [0001] The invention relates to the technical field of electric vehicle charging demand modeling, in particular to a method for modeling the charging demand of electric vehicles in residential areas based on a fuzzy comprehensive evaluation method and a charging system. Background technique [0002] In recent years, people's continuous attention to environmental issues and the huge pressure brought by the energy crisis have made electric vehicles, a clean energy vehicle, widely used. Limited by the current battery technology, people cannot avoid the problem of frequent charging of electric vehicle power batteries, and residential quarters are one of the primary places for car owners to choose for charging. However, the charging power of electric vehicles is large and random, and the large-scale electric vehicle charging demand in the future is bound to have a major impact on the power distribution system of old residential quarters. Therefore, the current de...

Claims

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Application Information

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IPC IPC(8): G06Q10/06G06Q50/06
CPCG06Q10/06315G06Q10/06393G06Q50/06
Inventor 李军蔡峥嵘刘克天邓晖
Owner NANJING INST OF TECH
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