Review of Space/Interface Charge Characteristics and Its Suppression Methods for Oil-Paper Insulation Composite Dielectrics

被引：0
作者：
Hao J. [1 ]
Liao R. [1 ]
Chen G. [2 ]
Min D. [3 ]
Zhang L. [4 ]
Zou R. [1 ]
机构：
[1] State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing
[2] School of Electronics and Computer Science, University of Southampton, Southampton
[3] State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an
[4] State Key Lab of Control and Simulation of Power System and Generation Equipment, Department of Electrical Engineering, Tsinghua University, Beijing
来源：
Gaodianya Jishu/High Voltage Engineering | 2019年 / 45卷 / 10期
基金：
国家重点研发计划; 中国国家自然科学基金;
关键词：
Evolution rule; Insulation performance; Oil-paper insulation; Space/interface charge; Suppression method;
D O I：
10.13336/j.1003-6520.hve.20190924019
中图分类号：
学科分类号：
摘要：
The space/interface charge problem in polymer dielectric has been the hot research field in domestic and abroad. Converter transformer is the most important equipment in HVDC transmission project. The accumulation of space/interface charges in oil-paper insulation system will directly lead to the distortion of local electric field distribution which can cause the breakdown, surface flashover, accelerated aging of insulating medium and so on, and is an important factor that impairs the safe and stable operation of converter transformers. We summarized and analyzed achievements in the research of space/interface charge of oil-paper insulating dielectrics in recent 20 years. First, we presented the latest progress in the space/interface charge measurement and simulation for oil-paper insulating composite dielectrics. Then, we discussed the influences of different voltage types (DC, AC, DC+AC, polarity reversal), field strength, temperature gradient and oil-paper bulk state on the space/interface charge evolution, and analyzed the relationship between space/interface charge dynamic behavior and the insulation performance. Finally, we put forward the suppression methods for space/interface charge of oil-paper insulation. A great deal of valuable achievements in research on space/interface charge of oil-paper insulation can provide a theoretical support for the design of insulation structure and the improvement of insulation performance of equipment. Moreover, it is needed to further research the measurement and simulation of space/interface charges of large-scale oil-paper insulation structures, the micro-correlation mechanism between space/interface charges and insulation properties of materials, and advanced electrical insulating materials with excellent insulation properties. © 2019, High Voltage Engineering Editorial Department of CEPRI. All right reserved.
引用
收藏
页码：3192 / 3206
页数：14
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