考虑需求响应和电动汽车负荷路-电耦合特性的配电网可靠性评估

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...

Reliability Evaluation of Distribution Network Considering Demand Response and Road-Electricity Coupling Characteristics of Electric Vehicle Load

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.