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Optimized operation method for electric bus charging and battery swapping station

An electric bus, charging and swapping station technology, applied in electric vehicle charging technology, charging stations, electric vehicles, etc., can solve problems such as large space limitations of optimization strategies, uneven use of battery packs, and increased battery pack loss.

Active Publication Date: 2018-08-17
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the existing operation methods of electric bus charging and swapping stations are based on 1. fixed battery swapping rules (the battery is replaced when the vehicle enters the station or the battery is replaced when the remaining battery power is insufficient), and the optimization strategy space is limited; 2. The corresponding relationship of the battery pack is simple, and there is room for further improvement in the optimization effect; or there is no corresponding relationship, which may lead to unbalanced use of the battery pack, increase the loss of the battery pack, and reduce the life of the battery pack

Method used

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  • Optimized operation method for electric bus charging and battery swapping station

Examples

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Embodiment

[0081] A. Taking the electric bus charging and swapping station serving two bus lines (K=2) as the research object, a dedicated distribution transformer (without conventional load) is used in the station; Δt=15min is an optimal control period, that is, a single The day is divided into 96 periods. The relevant parameters are set as follows: electric bus related parameters, including: battery pack capacity C B is 180kWh, and the average unit power consumption of the vehicle is C E Take 1.25kWh / km (this example assumes that the power consumption per unit mileage of the vehicle is proportional to the one-way driving time), the minimum state of charge SOC of the battery pack min Take 0.2; electric bus charging station related parameters: the number of charging piles in the station N cha is 25 seats, its maximum and minimum charging power P max ,P min 60kW and 0kW respectively, charging efficiency η cha is 0.95, the number of backup battery packs is 25 sets, and the number K of...

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Abstract

The invention discloses an optimized operation method for an electric bus charging and battery swapping station. The optimized operation method for the electric bus charging and battery swapping station comprises the steps of firstly, establishing a vehicle battery swapping demand and battery pack charging demand model on the basis of a battery swapping rule; secondly, giving an evaluation index,establishing a battery pack evaluation system according to an entropy weight method and optimally matching a vehicle battery swapping demand and a battery pack charging demand to guarantee the balanced use of battery packs and prolong the service lives of the battery packs; and establishing a battery pack orderly charging double-layer optimized model in the electric bus charging and battery swapping station on the basis, and optimizing the battery swapping rule and a battery pack charging scheme in the electric bus charging and battery swapping station in a combined manner to obtain an optimalbattery swapping rule and an optimal charging scheme. Compared with a traditional operation method, the optimized operation method for the electric bus charging and battery swapping station has the advantage that adverse effect on a power grid due to large-scale access of the battery packs to the power grid is reduced on the basis of guaranteeing the safe and economic operation in the electric bus charging and battery swapping station.

Description

technical field [0001] The invention relates to the technical field of optimal dispatching of electric buses, in particular to an optimal operation method of an electric bus charging and swapping station. Background technique [0002] In recent years, global fossil energy shortages and environmental problems have worsened. Energy crisis and environmental pollution are common problems faced by all countries in the world today, and they are huge obstacles to the sustainable development of human society. Electric vehicles (with the advantages of energy saving, environmental protection, and low carbon) have become a strategic emerging industry supported by my country. The public transportation industry represented by electric buses has large power supply, small supply intervals, and relatively uniform specifications. It is more suitable for battery replacement mode. For the growing electric bus charging and replacing stations, the disorderly charging behavior of large-scale batte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L11/18
CPCB60L53/60B60L53/64B60L53/80Y02T10/70Y02T10/7072Y02T90/12Y02T90/14
Inventor 杨健维杨鹤苟方杰何正友
Owner SOUTHWEST JIAOTONG UNIV
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