TY - GEN
T1 - Space charge characteristics in XLPE/BN nanocomposites at different temperatures
AU - Xiang, Jiao
AU - Wang, Shihang
AU - Chen, Peixing
AU - Li, Jianying
N1 - Publisher Copyright:
© 2018 IEEE.
PY - 2018/6/29
Y1 - 2018/6/29
N2 - In order to explore the method of improving the space charge characteristic of crosslinked polyethylene for HVDC cable, a small amount of nano-BN (0.1 wt%, 0.5 wt%, 1 wt%) are added into the crosslinked polyethylene matrix using the melt blending method. Because electrical characteristics of crosslinked polyethylene (XLPE) often depend on temperature, it is important to study the space charge injection characteristics of XLPE and nanocomposites under various temperatures. In this paper, the space charge characteristics of XLPE and XLPE/BN nanocomposites at different temperatures are tested by pulsed electro-acoustic (PEA) measurement. The results show that the temperature and the addition of nano-BN both have a great effect on the space charge characteristics of XLPE/BN. At 20 oC, homocharge is observed adjacent to anode, while at higher temperatures (40 oC, 60 oC) the space charge distribution is basically dominated by negative charges with deeper injection. The average volume charge density of nanocomposite with concentration of 0.1 wt% is always lower than that of pure XLPE at each temperature. Therefore, moderate addition of nano-BN can suppress the injection of positive charges. It is suggested that the improved space charge characteristics mainly arise from the interaction area formed by nano-BN. Besides, the mean attenuation rate of space charge in XLPE/BN nanocomposites decreases with the increase of nano-BN and accelerates as the temperature increases.
AB - In order to explore the method of improving the space charge characteristic of crosslinked polyethylene for HVDC cable, a small amount of nano-BN (0.1 wt%, 0.5 wt%, 1 wt%) are added into the crosslinked polyethylene matrix using the melt blending method. Because electrical characteristics of crosslinked polyethylene (XLPE) often depend on temperature, it is important to study the space charge injection characteristics of XLPE and nanocomposites under various temperatures. In this paper, the space charge characteristics of XLPE and XLPE/BN nanocomposites at different temperatures are tested by pulsed electro-acoustic (PEA) measurement. The results show that the temperature and the addition of nano-BN both have a great effect on the space charge characteristics of XLPE/BN. At 20 oC, homocharge is observed adjacent to anode, while at higher temperatures (40 oC, 60 oC) the space charge distribution is basically dominated by negative charges with deeper injection. The average volume charge density of nanocomposite with concentration of 0.1 wt% is always lower than that of pure XLPE at each temperature. Therefore, moderate addition of nano-BN can suppress the injection of positive charges. It is suggested that the improved space charge characteristics mainly arise from the interaction area formed by nano-BN. Besides, the mean attenuation rate of space charge in XLPE/BN nanocomposites decreases with the increase of nano-BN and accelerates as the temperature increases.
UR - https://www.scopus.com/pages/publications/85049850226
U2 - 10.1109/ICPADM.2018.8401195
DO - 10.1109/ICPADM.2018.8401195
M3 - 会议稿件
AN - SCOPUS:85049850226
T3 - Proceedings of the IEEE International Conference on Properties and Applications of Dielectric Materials
SP - 952
EP - 955
BT - ICPADM 2018 - 12th International Conference on the Properties and Applications of Dielectric Materials
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 12th International Conference on the Properties and Applications of Dielectric Materials, ICPADM 2018
Y2 - 20 May 2018 through 24 May 2018
ER -