TY - JOUR
T1 - Effect of traps on surface flashover of XLPE in vacuum
AU - Li, Shengtao
AU - Huang, Qifeng
AU - Sun, Jian
AU - Zhang, Tuo
AU - Li, Jianying
PY - 2010/6
Y1 - 2010/6
N2 - In the present paper, we study the effect of trap depth for shallow traps on the surface flashover performance in vacuum; that is on deepening the trap depth, the flashover performance is firstly enhanced and then weakened, only when the trap depth changes in the certain range, the best surface flashover performance in vacuum is exhibited. Further to a previous study, we extensively study wide range of trap depths by changing the aggregation structure of semi-crystalline cross-linked polyethylene (XLPE). In the present study, we firstly annealed the XLPE at 135 °C for 10 minutes then cooled it at different conditions to get samples with different trap depths. We found that the trap depth deepened on increasing the grain size. Furthermore, we found that the flashover performances of the samples (Cooled at a rate of 0.5 °C /min) were enhanced by 76% and 19%, respectively under dc and impulse voltage. These results demonstrate heat-treatment as an effective way to enhance the flashover performance in vacuum for the semi-crystalline polymers.
AB - In the present paper, we study the effect of trap depth for shallow traps on the surface flashover performance in vacuum; that is on deepening the trap depth, the flashover performance is firstly enhanced and then weakened, only when the trap depth changes in the certain range, the best surface flashover performance in vacuum is exhibited. Further to a previous study, we extensively study wide range of trap depths by changing the aggregation structure of semi-crystalline cross-linked polyethylene (XLPE). In the present study, we firstly annealed the XLPE at 135 °C for 10 minutes then cooled it at different conditions to get samples with different trap depths. We found that the trap depth deepened on increasing the grain size. Furthermore, we found that the flashover performances of the samples (Cooled at a rate of 0.5 °C /min) were enhanced by 76% and 19%, respectively under dc and impulse voltage. These results demonstrate heat-treatment as an effective way to enhance the flashover performance in vacuum for the semi-crystalline polymers.
KW - Aggregation structure
KW - Cross-linked polyethylene
KW - Heat treatment
KW - Surface flashover in vacuum
KW - Trap
UR - https://www.scopus.com/pages/publications/77954197616
U2 - 10.1109/TDEI.2010.5492273
DO - 10.1109/TDEI.2010.5492273
M3 - 文章
AN - SCOPUS:77954197616
SN - 1070-9878
VL - 17
SP - 964
EP - 970
JO - IEEE Transactions on Dielectrics and Electrical Insulation
JF - IEEE Transactions on Dielectrics and Electrical Insulation
IS - 3
M1 - 5492273
ER -