在各种电网条件下的长期储能价值,在未来的零排放环境中
Martin Staadecker1,2, Julia Szinai3, Pedro A Sánchez-Pérez4
1Mechanical and Aerospace Engineering, University of California San Diego, La Jolla, CA, USA. staadeck@mit.edu.
长期储能 (LDES) 对于零排放电网至关重要,特别是在风力强或下降的水力发电地区. 强制实施LDES可以显著降低高需求电力成本.
科学领域:
- 能源系统分析 能源系统分析
- 电网现代化 电网现代化
- 整合可再生能源的整合.
背景情况:
- 零排放电网需要强大的储能解决方案.
- 跨不同电网类型的长期储能 (LDES) 的具体价值和运行模式仍然不完全理解.
- 西部互联网是一个复杂的系统,拥有多样化的资源和传输基础设施.
研究的目的:
- 在一个零排放的西部互联网电网中量化长期储能 (LDES) 的价值.
- 在各种场景下分析LDES值,包括发电组合,传输扩展,存储成本和存储任务.
- 为电网规划人员提供关于LDES整合和政策制定的指导.
主要方法:
- 使用Switch容量扩展模型进行高分辨率电网建模.
- 模拟了西部互联网的39个不同的场景,以评估LDES价值.
- 评估了不同发电组合,传输基础设施和LDES成本轨迹的影响.
主要成果:
- 在风力发电主导的地区和那些经历水电资源减少的地区,LDES具有显著的价值.
- 当资本成本降至5美元/千瓦时以下时,季节性LDES运行变得经济可行.
- 强制为一年的储存周期提供足够的LDES,可以将高峰电价降低70%以上.
结论:
- 在实现可靠的零排放电网方面,LDES是至关重要的组成部分,特别是在特定的区域环境中.
- 降低LDES技术的成本对于实现成本效益高的季节性储能至关重要.
- 政策干预,如LDES授权,可以通过稳定在高峰需求期间的电价,为消费者带来实质性的利益.
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