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大规模电动汽车充放电对配电网的影响研究+程序

时间:2019-03-17 21:25来源:毕业论文
论文以电动汽车大规模使用为前提,将私家电动汽车作为研究对象,建立了具体的充电负荷模型,算例分析可得:单向无序充电模式下,电动汽车入网使得负荷曲线“峰上加峰”,造成

摘要在当今低碳经济的大背景下,电动汽车相比于传统汽车具有不可比拟的优势,但是由于充电需求具有明显的不确定性和随机性,当大量电动汽车入网充电时,会对总负荷分布态势带来较大改变。另一方面,电动汽车入网技术( )允许电动汽车给系统反馈电能,给配电系统的运行带来了新的发展机遇。33872
论文以电动汽车大规模使用为前提,将私家电动汽车作为研究对象,建立了具体的充电负荷模型,算例分析可得:单向无序充电模式下,电动汽车入网使得负荷曲线“峰上加峰”,造成系统运行负担,而对充电行为在电压偏移、网络损耗方面的影响,则进行潮流计算,并由算例分析可得:单向无序充电模式下,会使得电压最大偏移量超出允许值,网损率较高,影响系统经济运行,就此都提出了单向有序充电模式下,实行分时段电价的优化策略;最后,介绍电动汽车入网技术( )模式下,分时段电价政策对于不利影响有明显改善,带来削峰填谷、应急备用等有利影响。
关键词  电动汽车  配电网  V2G  电价政策
毕业论文设计说明书外文摘要
Title     Large scale study of electric vehicle charging and  discharging effect on distribution network                                                        源自$六l维,论:文w网)加7位QQ3249^114 www.lwfree.cn
Abstract
Under the background of low-carbon economy,although compared with the traditional car, electric vehicle has incomparable advantages,but due to charging demand has obvious uncertainty and randomness,when a large number of electric vehicle network charge,the total load distribution trend to bring great change.On the other hand,V2G allow electric vehicles to the system feedback electric energy,has brought the new opportunity for development to the operation of the power distribution system.
The paper takes the large-scale use of electric vehicles as the premise. The paper studies the private electric vehicle as the object of study, and establishes the charging load model. It can be analyzed by the numerical examples, This kind of charging mode, the electric car network makes the load curve of "peak on peak", causing the system to run the burden. The influence of the charging behavior on the voltage shift and network loss is carried out, and the power flow is calculated. It also can be analyzed by the numerical examples, Under the unidirectional charge mode, the maximum offset of the voltage exceeds the allowable value, and the net loss rate is higher, and the economic operation of the system is affected.The optimal strategy for the time price of the sub period is put forward. Finally, in the V2G mode, the sub-time electricity price policy has a significant improvement to the adverse effect, which brings the favorable impact of the peak load-cut, emergency reserve, etc.
Keywords  Electric vehicles  Distribution network  V2G  Pricing policy
目   录
1  绪论    1
1.1  课题研究背景及意义    1
1.2  电动汽车发展情况    2
1.3 电动汽车充放电    4
1.4国内外研究现状    6 源自$六l维,论:文w网)加7位QQ3249^114 www.lwfree.cn
1.5 论文主要研究内容    8
2 电动汽车充电行为对配电网的影响    9
2.1 影响电动汽车充电负荷的因素    9
2.2 方法的选用    10
2.3 电动汽车充电行为对负荷曲线的影响    11
2.4 电动汽车充电行为对电压偏移和网络损耗的影响    17 大规模电动汽车充放电对配电网的影响研究+程序:http://www.lwfree.cn/zidonghua/20190317/31172.html
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