EAGER: Electrical Grid Leveling by Distributed Energy Storage

EAGER：通过分布式储能实现电网均衡

• 批准号: 1135368
• 负责人: Trung Nguyen
• 金额: $ 2.57万
• 依托单位: University of Kansas Center for Research Inc
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-06-01 至 2013-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1135368&HistoricalAwards=false
• 关键词: EAGER; Electrical; Grid; Leveling; Distributed

1135368 (Nguyen). Our electrical grids are currently overloaded because of simultaneous peak electrical energy demand. This simultaneous demand sets the peak power generation level for power plants and peak power delivery capacity of the electrical grids. The peak power demand in the US and around the world is expected to increase significantly as the population grows and electrification of transportation is implemented. This creates a significant pressure for the need to build new power plants and upgrade the electrical grids. While the total daily electrical energy demand is fairly constant, its distribution rate (power) is not uniform with daytime load being almost double the night time load. If we can create a way in which this total daily energy demand is delivered at a constant rate, our existing electrical power plants and grids, which were designed for peak power, could produce and transmit energy more efficiently and economically. Furthermore, new power plants deployment and electrical grid upgrades or replacement can be done at a rate that is more manageable and less disruptive. A concept that may make this possible is to store electrical energy locally at the ?point of use? when demand is low or not needed for use when it is needed. An example of this is to buy and store electricity at night, when the demand and cost are low, for use in the day time when the demand and cost are high. This distributed energy storage approach allows the power plants and electrical grids to operate at more economical and sustainable levels. This one-year proposed project plans to conduct a systems and economics study of this concept and its impacts on the current energy production and distribution systems. Two storage applications will be evaluated, phase change systems for air-conditioning, a major use of electrical energy, and electrochemical storage systems (stationary batteries, flow batteries and fuel cells). The research team will identify the requirements of each application and determine the minimum round-trip storage efficiency and costs that these systems must have to be competitive using existing price differences. They will determine the percent of power plant and grid capacity that will become available when local energy storage capacity is used in various application sectors (commercial and residential). This work will be done by two undergraduate students, one each from Chemical Engineering and Electrical Engineering. The results generated will be used in an elective course called ?Energy for Sustainability? that the PI is developing for all disciplines in the school of engineering at the University of Kansas. This distributed energy storage concept may have a transformational impact on our current electrical energy production and transmission infrastructures. The data generated by this study will be very useful to the energy generation and transmission industries and the research community. Finally, this research will serve as an excellent venue to introduce issues on energy and environmental sustainability to the participating undergraduate students and to contribute to the development of a workforce that is more knowledgeable of these sustainability issues.

1135368（Nguyen）。由于同时峰值电能需求，我们的电网目前被超载。这一同时需求为发电厂的峰值发电水平和电网的峰值发电能力设定了峰值发电水平。随着人口的增长和运输的电气化，预计美国和世界各地的峰值电力需求将大大增加。这为需要建造新的发电厂和升级电网造成了巨大的压力。 虽然每日总电能需求相当恒定，但其分配速率（功率）并不均匀，白天负载几乎是夜间负载的两倍。如果我们能够创建一种以恒定速度传递的总每日能源需求的方式，那么我们现有的电力发电厂和网格是为峰值功率而设计的，可以在更有效，经济上产生和传输能量。此外，可以以更易于管理且破坏性较小的速度进行新的发电厂部署和电网升级或更换。 一个可能使这一点的概念是在使用点上本地存储电能？当需求低或不需要时，需要使用。一个例子是在晚上购买和存储电力，当需求和成本较低时，在需求和成本很高的时间内使用。这种分布式的储能方法使电厂和电网可以在更经济和可持续的水平上运行。这项为期一年的项目计划计划对该概念进行系统和经济学研究及其对当前能源生产和分销系统的影响。将评估两种存储应用，即用于空调的相变系统，电能的主要用途以及电化学存储系统（固定电池，流量电池和燃料电池）。研究团队将确定每个应用程序的要求，并确定使用现有价格差异必须具有竞争力的最低往返存储效率和成本。他们将确定当在各个应用领域（商业和住宅）中使用当地储能容量时，电厂和电网容量的百分比将可用。 这项工作将由两名本科生完成，一名来自化学工程和电气工程。产生的结果将在一个称为“可持续性的能源”的选修课程中使用？ PI正在堪萨斯大学工程学院的所有学科发展。 这种分布式的储能概念可能会对我们当前的电能生产和传输基础设施产生变革影响。这项研究产生的数据将对能源产生和传输行业和研究界非常有用。最后，这项研究将成为一个极好的场所，向参与的本科生介绍有关能源和环境可持续性的问题，并为发展这些可持续性问题的劳动力发展做出贡献。