| 引用本文: | 赵黄江,向月,刘俊勇,胡帅.基于改进配电网安全域的规模化电动汽车入网影响分析[J].电力自动化设备,2021,41(11): |
| ZHAO Huangjiang,XIANG Yue,LIU Junyong,HU Shuai.Analysis on impact of large-scale electric vehicles integration based on improved security region of distribution network[J].Electric Power Automation Equipment,2021,41(11): |
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| 摘要: |
| 我国电动汽车的潜在市场规模巨大且增长迅速，部分经济发达城市所在地区已形成规模化充电负荷需求。为评估规模化电动汽车接入给配电网带来的影响，提出了改进配电网安全域评估模型。在配电网-交通网耦合架构下提出一种计及电动汽车时空特性的“混合法”潮流可行域边界模型，从而模拟规模化电动汽车的充电过程。基于传统的配电网安全域的概念，提出计及电动汽车接入的配电网改进安全域模型，并由此给出电动汽车出行潜力指标的定义，从而分析规模化电动汽车接入对配电网的影响。算例分析表明所提方法可求得不同时刻不同节点处的配电网运行范围，通过电动汽车出行潜力指标可引导电动汽车用户的出行，从而为规模化电动汽车入网调度管理等应用提供支撑。 |
| 关键词: 规模化电动汽车 充电负荷 配电网-交通网 配电网安全域 出行潜力 |
| DOI：10.16081/j.epae.202105025 |
| 分类号:TM727;U469.72 |
| 基金项目:国家自然科学基金资助项目(51807127)；四川省科技计划项目(2019YFH0171,2019YFG0152) |
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| Analysis on impact of large-scale electric vehicles integration based on improved security region of distribution network |
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ZHAO Huangjiang1, XIANG Yue1, LIU Junyong1, HU Shuai2
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1.College of Electrical Engineering, Sichuan University, Chengdu 610065, China;2.State Grid Ningxia Electric Power Eco-Tech Research Institute, Yinchuan 750004, China
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| Abstract: |
| The potential market share of electric vehicles in China is huge and growing rapidly, and the demand for large-scale charging load has been noticeable in a few developed cities. To evaluate the impact of large-scale electric vehicles integrated to distribution network, an improved model of security region of distribution network is proposed. Under the distribution network-transportation network coupling architecture, a “hybrid method” power flow feasible region boundary model considering the space-time characteristics of electric vehicles is proposed to simulate the charging process of large-scale electric vehicles. On the basis of the traditional definition of security region of distribution network, an improved security region model of distribution network considering the integration of electric vehicles is proposed. In this model, the definition of electric vehicle travel potential index is illustrated, which is used to analyze the impact of large-scale electric vehicles integrated to distribution network. Numerical results show that the proposed method can accurately measure the operating range of distribution network at different time and different nodes. At the same time, the electric vehicle travel potential index can provide guidance to the travel of electric vehicle users, which further contributes to the scheduling management and other applications of large-scale electric vehicles. |
| Key words: large-scale electric vehicles charging load distribution network-transportation network security region of distribution network travel potential |
