Research on DC Breakdown Performance of Nanofluid-impregnated Pressboard Based on TiO2 Nanoparticles

被引：1

作者：

Shan, Bingliang ^{[1
]}

Wu, Yanyu ^{[1
]}

Song, Hanlin ^{[1
]}

Xing, Zhaoliang ^{[1
,2
]}

Huang, Meng ^{[1
]}

Liu, Baixin ^{[1
]}

Lv, Yuzhen ^{[1
]}

Li, Chengrong ^{[1
]}

机构：

[1] North China Elect Power Univ, State Key Lab Alternate Elect Power Syst Renewabl, Beijing, Peoples R China

[2] Global Energy Interconnect Res Inst Co Ltd, State Key Lab Adv Transmiss Technol, Beijing, Peoples R China

来源：

PROCEEDINGS OF THE 2020 3RD IEEE INTERNATIONAL CONFERENCE ON DIELECTRICS (ICD 2020) | 2020年

基金：

中国国家自然科学基金;

关键词：

CREEPING FLASHOVER CHARACTERISTICS; INSULATION; TRANSFORMERS;

D O I：

10.1109/ICD46958.2020.9341992

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

UHVDC has been applied widely since it possesses technical advantages in transmission electric power in long distance and large capability, leading to the severe test for the insulation performance of converter transformer. Oil-impregnated pressboard (OP) is one of the key insulating components in converter transformer due to its high mechanical strength and dielectric property, and its electrical performance is strictly related to the phenomenon of space charge accumulation. Recent experiments have shown that the insulation nanofluid has attracted a great deal of attention due to its considerable dielectric performance. Meanwhile, TiO2 semiconductor nanoparticles are considered to be the best choice owing to their low dielectric loss induced and considerable modification effect. However, the relation among particle sizes, DC breakdown voltages and space charge characteristics of nanofluid-impregnated pressboard (NP) based on TiO2 nanoparticles remains largely uncertain, which limits the performance improvement of oil/pressboard insulating system. In this paper, the modification effect on DC breakdown strength of oil-impregnated pressboard based on TiO2 nanoparticles with various sizes has been investigated. Moreover, the accumulation characteristics of OP and NPs were also studied by use of Pulsed Electro Acoustic Method (PEA). According to the experimental results and analysis, the relation among particle sizes, DC breakdown performance and accumulation characteristics of space charge was clarified and a possible modification mechanism has been proposed.

引用

页码：169 / 172

页数：4