Investigation on Charge Transport in Polypropylene Film under High Electric Field by Experiments and Simulation

Xiying Dai, Fuqiang Tian, Fei Li, Shuting Zhang, Zhaoliang Xing and Jinbo Wu
Additional contact information
Xiying Dai: State Key Laboratory of Advanced Power Transmission Technology, Beijing 102209, China
Fuqiang Tian: School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China
Fei Li: State Key Laboratory of Advanced Power Transmission Technology, Beijing 102209, China
Shuting Zhang: School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China
Zhaoliang Xing: State Key Laboratory of Advanced Power Transmission Technology, Beijing 102209, China
Jinbo Wu: School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China

Energies, 2021, vol. 14, issue 16, 1-15

Abstract: The charge transport in polypropylene was studied under DC electric fields at different temperatures. By the experimental measurement and simulation of the BCT model, we studied conduction currents, breakdown strength, and space charge distribution. In particular, the conduction characteristics under high temperature and high field, especially the conduction characteristics before the breakdown, were studied by systematic experiments, and the conduction characteristics and the breakdown mechanism were further studied by simulation. The results show that in the process of measuring conduction currents until breakdown, both high temperature and high electric field will promote charge transport. However, the free volume will increase at high temperature, which will easily lead to faster charge transport and breakdown. In the breakdown process at different temperatures, there are different breakdown mechanisms. At 20–60 °C, the electric breakdown process has mainly occurred in polypropylene film, and the breakdown strength is almost unchanged. At 80 °C, electric breakdown and thermal breakdown act together, and the charge transport is faster, and the breakdown field becomes smaller. Finally, we conclude that thermal stress plays a very important role in charge transport. In a high-temperature environment, the volume expansion of polypropylene will promote charge transport, and the insulation of polypropylene capacitor films will be damaged.

Keywords: charge transport; DC breakdown; conduction current; polypropylene film (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/1996-1073/14/16/4722/pdf (application/pdf)
https://www.mdpi.com/1996-1073/14/16/4722/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:14:y:2021:i:16:p:4722-:d:607973

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().