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Retrofit Control: A New, Modular Gyrator Control Approach for Integrating Large-Scale Renewable Power

改造控制：一种用于集成大规模可再生能源的新型模块化回转器控制方法

基本信息

批准号：
1711004
负责人：
Alexandra Duel-Hallen
金额：
$ 32.39万
依托单位：
North Carolina State University
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2017
资助国家：
美国
起止时间：
2017-08-01 至 2023-07-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1711004&HistoricalAwards=false
关键词：
Retrofit Control New Modular Gyrator

项目摘要

This 3-year NSF project advocates a power distribution system with ultra-high wind and photovoltaic penetration, whose operation and management are enabled by a smart device called the Solid-State Transformer (SST). The SST is a power electronics-based controllable transformer wherein communications and intelligence can be easily integrated for demand-side management. The bi-directional power flow capability of the SST can feed locally generated power back to the grid in a controlled way, which makes it a tailor-made choice for integrating large-scale wind and solar generation. As renewable installations continue to grow in the United States, multitudes of SSTs will need to be installed as well. This will necessitate advanced, complex and cross-coupled control algorithms spanning hundreds to thousands of SSTs. Our goal in this project is to study different variants of such SST-enabled control applications that can enable renewable integration in a smooth and stable way. We will particularly address two problems, namely, frequency control and voltage control, based on the fundamental question on "how to choose controller set-points for every SST in a distribution grid to ensure stable operation despite high variability in wind and solar generation". Currently, there is no well-defined control algorithm that addresses this question considering the physical constraints from the generation side. Our controllers will respond in real-time to any change in generation and loads, and automatically recalculate the set-points for every SST using a new control approach called retrofit control. The intellectual merit of this project will be in developing control designs for next-generation power grids, centered on new power electronic converter technologies. Advanced ideas of bifurcation analyses, nonlinear control, moving equilibria systems, and hierarchical control will be applied. The broader impact will be in bringing together three traditionally distinct research communities - control systems, power systems, and power electronics - to join forces, and resolve emerging issues on stability and dynamics in face of high renewable penetration. Research results will be broadcast through publications, undergraduate and graduate education, and conference tutorials. International collaboration will be fostered through a US-Japan research initiative between NC State University and Tokyo Institute of Technology.

这个为期3年的NSF项目倡导一种具有超高风能和光伏渗透率的配电系统，其操作和管理由称为固态Transformer（SST）的智能设备实现。SST是一种基于电力电子的可控Transformer，其中通信和智能可以很容易地集成到需求侧管理。SST的双向功率流能力可以以受控的方式将本地产生的电力反馈到电网，这使其成为整合大规模风能和太阳能发电的定制选择。随着可再生能源装置在美国的持续增长，也需要安装大量的SST。这将需要跨越数百到数千个SST的先进、复杂和交叉耦合的控制算法。我们在这个项目中的目标是研究这种支持SST的控制应用的不同变体，这些变体可以以平稳和稳定的方式实现可再生集成。我们将特别解决两个问题，即频率控制和电压控制，基于“如何为配电网中的每个SST选择控制器设定点，以确保稳定运行，尽管在风能和太阳能发电的高度可变性”的基本问题。目前，还没有一个明确定义的控制算法，解决这个问题，考虑到从发电侧的物理约束。我们的控制器将实时响应发电和负荷的任何变化，并使用称为改造控制的新控制方法自动重新计算每个SST的设定点。该项目的智力价值将是为下一代电网开发控制设计，以新的电力电子转换器技术为中心。先进的思想分歧分析，非线性控制，移动平衡系统，分层控制将被应用。更广泛的影响将是将三个传统上不同的研究团体-控制系统，电力系统和电力电子-联合起来，并解决面对高可再生能源渗透率的稳定性和动态性方面的新问题。研究成果将通过出版物、本科生和研究生教育以及会议教程进行传播。国际合作将通过北卡罗来纳州立大学和东京工业大学之间的美日研究计划来促进。