南方电网技术2017，Vol.11Issue(12)：51-55,5.DOI:10.13648/j.cnki.issn1674-0629.2017.12.008
基于PEA的聚四氟乙烯空间电荷测量及其温度特性
Measurement of Space Charges of Polytetrafluoroethylene Based on PEA and Their Temperature Characteristics
周兴梅 1蔡彪 2彭庆军 1周天春3
作者信息
- 1. 云南电网有限责任公司电力科学研究院,昆明650106
- 2. 输配电装备及系统安全与新技术国家重点实验室(重庆大学),重庆400030
- 3. 电力规划设计总院,北京100120
- 折叠
摘要
Abstract
The composite insulating material composed of polytetrafluoroethylene (PTFE) film and silicone oil is widely used in dry type high voltage apparatus.Though PTFE film is a key component of composite insulation,the spatial charge distribution of it is not clear yet.However,the existing researches prove that the space charge has a great influence on insulation discharge.Therefore,the space charge distributions of PTFE film at different temperatures are measured by electroacoustic pulse method.The results show that the negative space charge is easy to accumulate in the PTFE medium under the applied DC electric field.Secondly,the increase of temperature helps to accelerate the rate of space charge dissipation in the PTFE medium and dissipate the charge.However,the increase of temperature will also lead to the increase of space charge injection and accumulation of PTFE,and might promote the ionization of impurities in the medium,and lead to the accumulation of lots of space charge in the PTFE medium.Therefore,aiming at eliminating as much space charge a possible,it is recommended that the PTFE insulation medium should avoid to be operated at high temperature.关键词
聚四氟乙烯/空间电荷/电声脉冲法/电场Key words
polytetrafluoroethylene (PTFE)/space charge/electroacoustic pulse method (PEA)/electric field分类
信息技术与安全科学引用本文复制引用
周兴梅,蔡彪,彭庆军,周天春..基于PEA的聚四氟乙烯空间电荷测量及其温度特性[J].南方电网技术,2017,11(12):51-55,5.
