电动汽车有序充电与配电网成本效能分析

发布时间：2018-04-25 07:32

本文选题：电动汽车 + 区域配电网　；参考：《华北电力大学》2017年硕士论文

【摘要】：近年来全球气候不断恶化,传统化石燃料汽车受到挑战,电动汽车领域迅速发展。电动汽车充电负荷在时间和空间上具有一定随机性,电动汽车的随机充电会导致配电网负荷峰值加大,影响配电网的安全稳定运行。为给用户提供合格的电能质量,配电网需要进行增容扩建,在电力市场化的形式下,电力企业越来越重视配电网的成本效能。因此研究电动汽车有序充电提高配电网的成本效能具有重要意义。区域配电网是由多种用电负荷组成的,分析居民小区用电负荷、商业部门用电负荷以及政府部门用电负荷的用电规律,针对不同的负荷对电动汽车采用不同的有序充电策略,居民小区和政府部门的电动汽车夜晚停放时间较长,有足够的充电时间,本文提出了一种基于峰谷电价的延时充电策略;商业区电动汽车停靠相对集中,停靠时间相对较短,且商业区电价较高,本文采用V2G模式进行有序充放电控制。考虑到区域配电网不同类型用户的用电负荷用电规律的不同,其不同类型的负荷的之间在空间上能够形成互补。为达到区域配电网削峰填谷的目的,在居民小区,政府部门和商业区用电负荷进行单点有序充电的基础上使其在空间上进行互补,从而进一步降低配电网的峰谷差。为给用户提供合格的电能质量,配电网需要升级改造。根据不同的电动汽车的接入模式对配电网进行规划,通过计算配电网成本效能指标来体现配电网规划方案的优劣。通过对居民小区、政府部门用户进行峰谷电价延时充电仿真,验证了峰谷电价延时充电法的有效性;通过对商业区用户进行V2G模式下的充电负荷仿真,验证了V2G控制策略的有效性。以IEEE-RBTS Bus5系统主馈线为算例,进行时空互补的有序充电仿真,验证了区域配电网时空互补有序充电策略的有效性。分别计算了电动汽车不同接入模式下原有配电网的电能质量。根据电动汽车的不同接入模式进行配电网规划,通过成本效能的计算验证了时空互补有序充电规划方案最优。
[Abstract]:In recent years, the global climate is deteriorating, the traditional fossil fuel vehicles are challenged, and the electric vehicle field is developing rapidly. The charging load of electric vehicle is random in time and space. Random charging of electric vehicle will increase the peak load of distribution network and affect the safe and stable operation of distribution network. In order to provide users with qualified power quality, the distribution network needs to be expanded. In the form of electricity marketization, power enterprises pay more and more attention to the cost effectiveness of distribution network. Therefore, it is of great significance to study the orderly charging of electric vehicles to improve the cost efficiency of distribution network. The regional distribution network is composed of a variety of power loads. This paper analyzes the law of electricity consumption in residential areas, commercial departments and government departments, and adopts different orderly charging strategies for electric vehicles under different loads. Electric vehicles in residential areas and government departments have long parking time at night and sufficient charging time. In this paper, a time-delay charging strategy based on peak and valley price is proposed, and the parking time of electric vehicles in commercial district is relatively concentrated, and the parking time is relatively short. The electricity price of commercial district is high. In this paper, V2G mode is used to control the charge and discharge orderly. Considering the different law of power consumption of different types of users in regional distribution network, the different types of load can complement each other in space. In order to realize the goal of cutting peak and filling valley in regional distribution network, on the basis of single point orderly charging of electricity load in residential area, government department and commercial district, it can complement each other in space, thus further reducing the peak and valley difference of distribution network. In order to provide users with qualified power quality, the distribution network needs to be upgraded. According to the different access modes of electric vehicles, the distribution network is planned, and the cost effectiveness index of the distribution network is calculated to reflect the advantages and disadvantages of the distribution network planning scheme. The validity of peak-valley price delay charging method is verified by the simulation of peak-valley price delay charging for residential district and government department users, and the charging load simulation of commercial area users under V2G mode is carried out. The effectiveness of V2G control strategy is verified. Taking the main feeder of IEEE-RBTS Bus5 system as an example, the spatio-temporal complementary ordered charging simulation is carried out to verify the effectiveness of the space-time complementary ordered charging strategy for regional distribution network. The power quality of the original distribution network under different access modes of electric vehicles is calculated respectively. The distribution network planning is carried out according to the different access modes of electric vehicles, and the optimization of space-time complementary orderly charging planning scheme is verified by the cost effectiveness calculation.
【学位授予单位】：华北电力大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM73;U491.8

【参考文献】