GOALI: Investigation of Galvanic Reaction Barriers in High Temperature High Voltage Conductors

该GOALI项目将研究机械，电气和环境领域对玻璃/聚合物复合护套结构完整性的综合影响，作为下一代高压聚合物基复合导体中的电化学反应屏障。通过这个项目，我们对臭氧，污染，高温，机械和电气负载以及酸/水分对复合材料的综合影响的理解将得到显着提高，从而导致高压工程的重大进展。 这项研究将具有非常强的跨学科实验和数值组成部分。复合材料将受到各种极端的高电压/温度在服务中的应力和他们的故障特性将被确定。 复合材料中的各种类型的传输机制将通过多尺度建模进行数值模拟，以了解复合材料和导体中的原电池反应过程。我们将使用纳米技术优化复合材料的设计，最大限度地提高其作为未来导体设计的电流反应屏障的有效性。 该项目将与美国多家公用事业公司和制造商密切合作。由于电力需求的快速增长和新能源的开发，该国迫切需要能够利用现有的通行权更有效地输送更多的电力。然而，在区域电网中使用的基于钢（用于强度）和铝（用于传导）绞线的高压导体的当前设计表现出若干限制。因此，正在设计对使用条件具有更好抵抗力的新导线。其中之一是聚合物芯复合导体（PCCC）。 PCCC基于单向聚合物基质复合材料芯，具有用于强度和刚度的碳纤维和玻璃纤维，以及用于传导的铝绞线。它们可以传输比目前基于钢和铝的设计多三倍的电力。这些导体将在本研究中进行研究，以改进其设计或用全新的设计取代它们。该项目将提高美国高压制造业在世界各地的声誉，也将提高PCC导体潜在用户的信心水平。

This GOALI project will examine the combined effect of mechanical, electrical and environmental fields on the structural integrity of glass/polymer composite sheaths as barriers against galvanic reactions in the next generation high voltage polymer based composite conductors. Through this project, our understanding of the combined effects of ozone, pollution, high temperature, mechanical and electrical loads, and acids/moisture on the composites will be significantly improved leading to major advances in high voltage engineering. This research will have very strong interdisciplinary experimental and numerical components. The composites will be subjected to a variety of extreme high voltage/temperature in-service stresses and their failure characteristics will be determined. Various types of transport mechanisms in the composites will be numerically simulated though multiscale modeling to understand the galvanic reaction processes in the composites and the conductors. We will optimize the design of the composites using nanotechnology maximizing their effectiveness as galvanic reaction barriers for future designs of the conductors. The project will be done in very close collaborations with several US utilities and manufactures.Due to the rapidly increasing demand for electric power and the development of new sources of energy, there is an urgent need in this country to be able to transport more electric power, more efficiently, using the existing rights-of-way. However, the current designs of high voltage conductors based on steel (for strength) and aluminum (for conduction) strands used in regional grids exhibit several limitations. Therefore, new conductors, with significantly better resistance to in-service conditions are being designed. One of them is the Polymer Core Composite Conductor (PCCC). PCCCs are based on a unidirectional polymer matrix composite core with carbon and glass fibers for strength and stiffness, and aluminum strands for conduction. They can transport three times more power than the current designs based on steel and aluminum. And these conductors will be studied in this research in order to improve their design or to replace them with entirely new designs. The project will enhance the reputation of American high voltage manufacturing around the world and will also improve the level of confidence among the potential users of PCC conductors.