评估电动汽车在电网中的响应能力
Shen Yuong Wong1, Kaihan Liang1, Hui Hwang Goh2
1Department of Electrical and El Engineering, Xiamen University Malaysia, Sepang, Malaysia.
MethodsX
|July 5, 2024
概括
电动汽车为电网提供备用电力,但它们在状态变化时的响应能力往往被忽视. 本研究引入了一个模型来预测这种能力,改善电网稳定性和电动汽车集成.
科学领域:
- 电气工程 电气工程
- 城市规划 城市规划
- 能源系统 能源系统
背景情况:
- 由于频繁,大规模的停电,城市需要强大的备用电力.
- 电动汽车 (EV) 可以通过车辆到电网 (V2G) 技术支持电网,提供响应能力.
- 现有的研究忽略了在状态过渡 (充电,放电,置) 期间的电动汽车响应能力动态.
研究的目的:
- 为电动汽车引入一个多时间尺度响应能力预测模型.
- 为了考虑电动汽车状态的转换,并确保用户的旅行需求得到满足.
- 为了提高V2G集成预测的准确性.
主要方法:
- 开发了一种多时间尺度响应能力预测模型.
- 集成的电动汽车充电状态评估,以满足用户旅行要求.
- 在能力预测之前利用重力模型来评估用户的旅行需求.
- 分析了洛杉矶的三个社区:市中心,林肯高地和银湖.
主要成果:
- 在状态转换过程中忽视EV响应能力可能会导致2000-4000千瓦时的差异响应能力.
- 当忽略状态转换时,预测准确度可能会下降20%至25%.
- 即使在状态转换期间,EV响应能力也是非零的.
结论:
- 准确预测电动汽车响应能力,包括在状态过渡期间,对于电网稳定性至关重要.
- 整合用户旅行需求评估可以提高V2G预测的有效性.
- 这项研究支持将V2G技术无整合到城市电网中.
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