Integrated Monitoring and Fault-Tolerant Dispatch of Hybrid Energy Systems

PI：El-Farra，Nael H.Proposal#：1438456机构：加州大学戴维斯分校标题：混合能源系统的集成监控和容错调度电力行业的竞争随着环保微型涡轮机、燃料电池、光伏、小型风力涡轮机和其他先进分布式发电技术的到来而汇聚在一起，引发了人们对分布式发电的浓厚兴趣。这种政策和技术的融合有望使电力系统从主要依赖中央发电转变为分布式能源(DER)提供所需的大部分电力。由此产生的电力可靠性、质量和效率的重大改进；以及对不断变化的能源需求做出更大的反应的灵活性，可以节省目前每年因电力中断而损失的数十亿美元。这一演变的一个重要挑战-特别是鉴于核反应堆的数量和多样性不断增加--是制定综合监测、控制和协调战略，以确保在各种干扰和故障情况下最佳调度能源资源，提供高度可靠的服务。考虑到分布式电力市场是由对可靠的高质量电力的需求驱动的，以及当DER被集成以支持电网运行时，局部潮流中断可能会产生重大影响，这一点具有重要意义。本研究项目的目标是通过开发集成监控和监督容错控制的分层体系结构来解决DER容错调度中出现的基本问题。在这种体系结构中，分布式监控和容错控制系统在本地执行及时的故障识别和控制系统重构，并与更高级别的监控器集成，在无法进行本地故障整改的情况下，该监控器以最佳方式协调发电。这种层级结构能够通过监督监督及时减少故障。为实现这些目标，计划开展以下项目：(1)开发一种基于局部模型的综合方法来识别和适应独立的DER，(2)设计稳健的监测和重构策略，以解决可再生DER中间歇发电、外部扰动以及数据丢失和错误等固有不确定性，(3)设计基于优化的监督控制系统，该系统可在发生故障事件后重新配置电力调度策略，以及(4)将开发的方法应用于混合DER的仿真模型。

PI: El-Farra, Nael H.Proposal #: 1438456Institution: University of California - Davis Title: Integrated Monitoring and Fault-Tolerant Dispatch of Hybrid Energy SystemsThe convergence of competition in the power industry with the arrival of environmentally friendly micro-turbines, fuel cells, photovoltaics, small wind turbines, and other advanced distributed power technologies has sparked strong interest in distributed power generation. This convergence of policy and technology promises to transform the electric power system from one relying primarily on central generation to one in which Distributed Energy Resources (DERs) provide most of the power needed. The resulting major improvement in power reliability, quality and efficiency; and the greater flexibility to respond to changing energy needs could save billions of dollars now lost each year because of power disruptions. An important challenge with this evolution -- especially in light of the increasing number and diversity of DERs -- is the development of integrated monitoring, control and coordination strategies that would ensure optimal dispatch of the energy resources to provide highly reliable services under various disturbance and failure scenarios. This is significant given the fact that the distributed power market is driven by the need for reliable high-quality power, and the substantial impact that local disruptions in power flow can have when the DERs are integrated to support grid operations.The objective of this research project is to resolve the fundamental issues that arise in the fault-tolerant dispatch of DERs through the development of a hierarchical architecture for the integration of monitoring and supervisory fault-tolerant control. In this architecture, distributed monitoring and fault-tolerant control systems that perform timely fault identification and control system reconfiguration at the local level are integrated with a higher-level supervisor that optimally coordinates power generation in the event that local fault rectification is not possible. This hierarchy enables the timely mitigation of faults with supervisory oversight. To achieve these objectives, the following projects are planned: (1) the development of an integrated approach for local model-based fault identification and accommodation in stand-alone DERs, (2) the design of robust monitoring and reconfiguration strategies that account for intrinsic uncertainties due to intermittent power generation in renewable DERs, external disturbances, and data losses and errors, (3) the design of an optimization-based supervisory control system that reconfigures the power dispatch strategy following failure events, and (4) applications of the developed methods to simulated models of hybrid DERs.