摘要
随着电动汽车的普及,大量的无序充电行为给配电网可靠性带来负面影响。文章建立了考虑需求响应和路-电耦合特性的配电网可靠性评估模型,准确预测电动汽车时空分布负荷并对其进行调度,改善可靠性指标。提出了路-电耦合模式结构及时空负荷预测框架;建立了路网模型、用户模型、考虑需求响应的充电负荷补充模型,得到电动汽车负荷时空分布;基于双向层级结构、启发式削减策略对电动汽车接入的配电网可靠性进行评估。以某区域路-电耦合网为例,分析了该区域电动私家车充电负荷时空分布情况并对考虑需求响应、路-电耦合特性的配电网可靠性进行了评估。各种场景下的仿真结果验证了文章模型的有效性以及需求响应对可靠性指标的优化作用、路-电耦合特性对可靠性指标的恶化影响。
With the popularity of electric vehicles(EVs), a large number of disorderly charging behaviors have a negative impact on the reliability of the distribution network. In this paper, a reliability evaluation model of distribution network considering demand response and road-electricity coupling characteristics is established to accurately predict and dispatch the spatiotemporal distribution load of electric vehicles, so as to improve the reliability index. Firstly, the road-electricity coupling model structure and the time-space load forecasting framework are proposed. Then the road network model, user model, and charging load supplement model considering demand response are given, and the space-time distribution of electric vehicle load is obtained. Finally, evaluation based on the two-way hierarchical structure and heuristic reduction strategy is carried out for the reliability of the distribution network where the EVs connect. Taking a regional road-electricity coupling network as an example, the temporal and spatial distribution of private EV charging load in this area is analyzed and the reliability of the distribution network considering demand response and road-electricity coupling characteristics is evaluated. Simulation results in various scenarios verify the effectiveness of the proposed model, the optimization effect of demand response on reliability index, and the deterioration effect of road-electricity coupling characteristics on the reliability index.
作者
林铭蓉
胡志坚
高明鑫
陈锦鹏
LIN Mingrong;HU Zhijian;GAO Mingxin;CHEN Jinpeng(School of Electrical Engineering and Automation,Wuhan University,Wuhan 430072,China)
出处
《电力建设》
CSCD
北大核心
2021年第6期86-95,共10页
Electric Power Construction
基金
国家自然科学基金项目(51977156)。
关键词
路-电耦合
电动汽车
充电负荷
需求响应
可靠性评估
road-electricity coupling
electric vehicle
charging load
demand response
reliability evaluation
