Integration and Impact Assessment of AC/DC Hybrid Distribution Grids

目前由Newmarket-Tay Power Distributed Ltd(NTPDL)拥有和管理的配电系统基础设施的设计不能适应新出现的直流技术。可再生能源、存储系统和插电式电动汽车(EVS)等直流技术的广泛应用产生了对更多AC/DC和DC/DC转换的需求。随着分布式能源和现代负载等其他直流技术的采用，变流系统的数量将继续迅速增加。AC/DC混合基础设施是未来智能电网的一种很有前途的配置。这样的配置使NTPDL配电系统能够有效地管理AC/DC不可信的能源资源，并可靠地向负荷中心输送电力，从而形成AC/DC配电系统。威斯康星州大学的研究人员将与NTPDL合作，研究以即插即用特性为特征的新型AC/DC混合配电系统。NTPDL将面临的另一个重要方面是，相当大比例的分布式能源可能是可再生的，因此本质上是间歇性的。如果考虑到电动汽车电力需求的未知水平，不确定性水平甚至会进一步增加。可再生能源的间歇性和业主的随机行为都使交直流配电系统的设计和运行变得更加复杂和困难。

The current infrastructure of the distribution system owned and managed by Newmarket-Tay PowerDistribution Ltd (NTPDL) is not designed to accommodate the new emerging DC technologies. Thewidespread implementation of DC technologies such as renewables, storage systems, and plug-in electricvehicles (EVs) have created a demand for more AC/DC and DC/DC conversions. The number of conversionsystems will continue to escalate rapidly as additional DC technologies, such as distributed energy resourcesand modern loads, are adopted. An AC/DC hybrid infrastructure is a promising configuration for future smartgrids. Such a configuration allows NTPDL distribution system to efficiently manage AC/DC distrusted energyresources and reliably deliver power to load centres, along with the resulting formation of AC/DC distributionsystems. UW researchers will collaborate with NTPDL to investigate the newly structured AC/DC hybriddistribution system characterized by plug-and-play features. Another important aspect NTPDL will be facing isthat a significant proportion of distributed energy resources will probably be renewable and thereforeintermittent in nature. The level of uncertainty increases even further when the unknown level of EV powerdemand is taken into account. Both the intermittent nature of renewable energy and the random behaviour ofEV owners complicate and render more difficult the design and operation of the AC/DC distribution system.