| 引用本文: | 杨昕然,吕林,向月,刘友波,刘芳芳.“车-路-网”耦合下电动汽车恶劣充电场景及其对城市配电网电压稳定性影响[J].电力自动化设备,2019,39(10): |
| YANG Xinran,Lü Lin,XIANG Yue,LIU Youbo,LIU Fangfang.Degradation charging scenarios and impacts on voltage stability of urban distribution network under “EV-road-grid” coupling[J].Electric Power Automation Equipment,2019,39(10): |
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| 摘要: |
| 为评估电动汽车无序充电行为引起的充电负荷时空变化对城市配电网电压稳定性的影响，在构建恶劣充电场景的基础上提出了一种计及电动汽车行为特性驱动负荷增长的连续潮流模型。基于复杂网络理论构建“车-路-网”耦合系统模拟电动汽车行驶路径特性，在考虑城市交通网的约束条件下，设计电动汽车充电位置和行驶路径表征充电负荷的时空变化性，并以此构建恶劣充电场景，利用改进的连续潮流模型搜索电网崩溃状态，分析临界状态下的电压分布特性和电网薄弱区域。所提方法可量化恶劣充电场景下城市电网接纳电动汽车的数量，评估电网薄弱区域并对接入充电设施的该区域配电网进行改造和规划。 |
| 关键词: 电动汽车 充电负荷模型 “车-路-网”系统 恶劣充电场景 连续潮流 配电网 电压稳定性 |
| DOI：10.16081/j.epae.201908018 |
| 分类号:TM712.2;U469.72 |
| 基金项目:国家自然科学基金资助项目(51807127)；四川省科技厅项目(2019YFH0171,2019YFG0152) |
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| Degradation charging scenarios and impacts on voltage stability of urban distribution network under “EV-road-grid” coupling |
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YANG Xinran, Lü Lin, XIANG Yue, LIU Youbo, LIU Fangfang
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College of Electrical Engineering, Sichuan University, Chengdu 610065, China
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| Abstract: |
| In order to evaluate the impact of static voltage stability caused by the disordered charging behavior of EVs(Electric Vehicles),a degradation charging scenario is constructed and a continuous flow model considering the behavior of EVs in a temporal and spatial context is proposed. Based on the complex network theory, a coupling system of “EV-road-grid” is built to simulate the driving path characteristics of EVs under the constraints of urban traffic network. The charging position and driving path of EVs are designed to characterize the temporal and spatial variability of charging load, then a degradation charging scenario is constructed. An improved continuous power flow model is built to search the power grid collapse state, and the voltage distribution characteristics and weak areas of power grid in critical state are analyzed. The proposed method can quantify the number of EVs admitted to the urban power grid in degradation charging scenarios, evaluate the weak areas of power grid, reconstruct and plan the regional distribution network connected with charging facilities. |
| Key words: electric vehicles charging load model “EV-road-grid” system degradation charging scenario continuous power flow distribution network voltage stability |
