本期两场讲座报告，具体信息如下：

时间：2021年10月16日 10：00——12:00

地点：创新港涵英楼·新港报告厅

电力真空开关技术百年  A Hundred Years of Power Vacuum Switch Technology

时间：10：00-11：00

刘志远

西安交通大学电气工程学院教授，博士生导师。电力设备电气绝缘国家重点实验室固定研究人员。曾获国家技术发明奖二等奖，教育部技术发明一等奖，和教育部科技进步二等奖各1次。出版英文专著1部，中文专著2部、译著1部。发表学术论文374篇，授权中国发明专利60项，实用新型15项，美国发明专利2项。参与制定中国标准8项。担任国际电力开关领域学术组织“电流零点俱乐部”（Current zero club）委员；IEEE系列国际电力开断技术会议“ICEPE-ST”常设国际科学委员会秘书长、委员；国际熔断器及其应用会议国际科学委员会委员；担任国际大电网会议(CIGRE) 的4个工作组委员；担任全国电工合金标准化技术委员会主任委员等4个技术委员会委员。担任SCI源刊中国工程院院刊《Engineering》青年通讯专家和SCI源刊IET《HIGH VOLTAGE》associate editor，担任《电工材料》编辑委员会副主任委员等3个学术期刊编委。

Zhiyuan Liu is a professor and doctoral supervisor in the School of Electrical Engineering, Xi'an Jiaotong University. He is a permanent researcher in the State Key Laboratory of Electrical Insulation of Power Equipment. He was awarded the National Technical Invention Award's Second Prize, the Technical Invention of the Ministry of Education's First Prize, and the Scientific and Technological Progress of the Ministry of Education's Second Prize. He has published one English monograph, two Chinese monographs, one translation, and 374 academic papers; and has been granted 60 Chinese invention patents, 15 utility models, and 2 US invention patents. He has participated in the formulation of 8 Chinese standards. He is a member of the “Current zero club”, an international academic organization in the field of electrical switchgear; and is the secretary general and member of the permanent international scientific committee of “ICEPE-ST”, a series of IEEE international conferences on electrical switching technology. He is a member of the International Scientific Committee of the International Conference on Fuses and Their Applications, a member of four working groups of the International Conference on Large Power Grids (CIGRE), and a member of four technical committees, including the chairman of the National Technical Committee for the Standardization of Electrical Alloys. He is the young correspondent expert of SCI source journal Engineering, associate editor of SCI source journal HIGH VOLTAGE", and the vice-chairman of the editorial board of Electrical Materials".

报告讲述电力真空开关从1920年代在美国加州理工学院诞生以来的百年恢宏历史。报告包括三个方面的内容：电力系统与电力开关、电力真空开关的诞生、以及真空开关如何改变电力系统的未来。该报告一方面介绍电力真空开关技术的发展历程，另一方面突出其中的关键人物，包括世界上第一台真空开关的创始人－美国加州理工学院索伦森教授，世界上第一台真空断路器的发明者－交通大学校友李天和，“中国真空开关之父”－西安交通大学王季梅教授等。最后讨论电力真空开关技术正在改变电力系统的未来：发展高电压等级真空断路器有望减少强温室效应气体SF６的排放、超高压快速真空断路器可以显著提升电力系统暂态稳定性，快速真空开关可实现相控投切以降低电力系统开关操作引起的暂态等。

The report covers the 100-year history of the electric vacuum switch since its birth at Caltech in the 1920s. The report covers three areas - the power system and the power switch, the birth of the power vacuum switch, and how the vacuum switch is changing the future of the power system. The report introduces the development of power vacuum switch technology and focuses on key figures such as Professor Sorensen of Caltech, known as the founder of the world's first vacuum switch; Li Tianhe, the inventor of the world's first vacuum circuit breaker; and Prof. Jimei Wang of Xi'an Jiaotong University, an alumnus of Jiaotong University who is also known as the Father of China's vacuum switch. Finally, how vacuum switchgear technology is changing the future of power systems is discussed. The development of high-voltage vacuum breakers is expected to reduce the emission of SF6, a strong greenhouse gas. Ultra-high voltage fast vacuum breakers significantly improve the transient stability of power systems, and fast vacuum switches can realize phase-controlled switching to reduce transients caused by switching operations in power systems.

高压直流电缆中的捣蛋鬼-空间电荷  Troublemakers in HVDC Cables - Space Charge

时间：11：00-12：00

吕泽鹏

西安交通大学教授，博士生导师。2015年至2018年在曼彻斯特大学电气与电子工程学院，任助理研究员，2018年入选校西安交通大学“青年拔尖人才计划”。针对高压直交流电缆绝缘老化问题，提出改进的双极性载流子输模型，系统解释了电荷积聚的试样厚度依赖性、纳米填料抑制电荷积聚和温度梯度加剧电荷积聚的作用机理等问题；利用3DXCT表征了电树枝的分步生长，揭示了微米填料影响电树枝生长的机理；提出利用局放电压差获取起始和终止电压的新模型，建立了局放与电树生长的定量关系；提出基于逐步升压法获取绝缘材料电老化寿命指数的新方法，揭示交直流、纳米填料、温度梯度对绝缘老化的影响。主持国家自然科学基金1项，企业科技项目十余项，参与国家重点、重大项目若干项。共发表SCI期刊论文20余篇，作国际会议特邀报告3次，国际会议分会场主席3次。

Zepeng Lü is a professor and doctoral supervisor in the School of Electrical Engineering, Xi'an Jiaotong University. From 2015 to 2018, he was an assistant researcher in the School of Electrical and Electronic Engineering, the University of Manchester.Targeting aging high-voltage direct AC cable insulation, he proposed an improved bipolar carrier transport model and systematically explained the dependence of specimen thickness on charge accumulation, the inhibition of charge accumulation by nano-fillers, and the mechanism of charge accumulation exacerbated by temperature gradients. He characterized the growth of electric dendrites using 3D XCT, showing that the mechanism of micron filler affecting the growth of electric dendrites. He also proposed a new model to obtain the starting and ending voltages by establishing the quantitative relationship between local discharge and electric tree growth. A new method for obtaining the electric aging life index of insulating materials based on the step-up voltage method was proposed, and the effects of AC/DC, nano-filler and temperature gradient on insulation aging were revealed. He has presided over one project supported by the National Natural Science Foundation of China, more than ten enterprise-supported science and technology projects, and participated in several national key and major projects. He has published more than 20 papers in SCI-indexed journals, presented 3 times at international conferences, and served as the chair 3 times in parallel sessions of international conferences 

高压直流电缆是未来城市能源输送与新能源接入的重要电力设备。但在高压运行下，电缆绝缘中会形成空间电荷积聚，使其内部电场畸变，从而威胁电缆的安全运行。报告针对高压直流电缆绝缘中的电荷输运和积聚现象进行了描述，分析了电荷输运的机理，并对目前常采用的电荷输运抑制方法进行了介绍。

High voltage DC cables are important future power equipment for urban energy transmission and new energy access. However, under high-voltage operation, space charge accumulation forms in cable insulation, distorting the internal electric field and thus threatening safe cable operation. This report describes the charge transport and accumulation phenomena in the insulation of high-voltage DC cables, analyzes the mechanism of charge transport, and introduces commonly used charge transport suppression methods.