TY - GEN
T1 - Study on charge migration properties at XLPE/EPDM interface under orthogonal electric field
AU - Wang, Xia
AU - Yu, Dong
AU - Wang, Huanan
AU - Cui, Jiangjing
AU - Qiu, Wei
AU - Huang, Shuntao
AU - Wei, Yilong
AU - Duan, Shengjie
N1 - Publisher Copyright:
© 2018 IEEE.
PY - 2018/6/29
Y1 - 2018/6/29
N2 - Due to the discontinuity of the dielectrics, the interface between cable and accessory insulation is easy to capture charges and to form interfacial charges. Furthermore, in practice, the orthogonal electric stress exists at the interface between cable and accessory. Therefore, the accumulation and migration characteristics of interfacial charges will be much complex under this applied stress. In this paper, we developed a set of two-dimensional space charge measurement equipment based on pulsed electroacoustic (PEA) method. Then interfacial charges of XLPE/EPDM composite were measured under single bulk electrical stress and orthogonal electrical stress to investigate migration property of interface charges especially under the orthogonal electrical stress. Here the applied voltages were all 9 kV at the both conditions. The test results show that under single body electrical stress, the amount of the measured interfacial charges is basically same at any site of the three PVDF sensors. In addition, the longer the application time the greater the interfacial charges. Under orthogonal electric field, interfacial charges at the site of the three PVDF sensors occur an obvious migration process: the maximum amount of charges changes from the first PVDF sensor to the third PVDF sensor. On the other hand, the mobility of interfacial charges decreases gradually during the migration process.
AB - Due to the discontinuity of the dielectrics, the interface between cable and accessory insulation is easy to capture charges and to form interfacial charges. Furthermore, in practice, the orthogonal electric stress exists at the interface between cable and accessory. Therefore, the accumulation and migration characteristics of interfacial charges will be much complex under this applied stress. In this paper, we developed a set of two-dimensional space charge measurement equipment based on pulsed electroacoustic (PEA) method. Then interfacial charges of XLPE/EPDM composite were measured under single bulk electrical stress and orthogonal electrical stress to investigate migration property of interface charges especially under the orthogonal electrical stress. Here the applied voltages were all 9 kV at the both conditions. The test results show that under single body electrical stress, the amount of the measured interfacial charges is basically same at any site of the three PVDF sensors. In addition, the longer the application time the greater the interfacial charges. Under orthogonal electric field, interfacial charges at the site of the three PVDF sensors occur an obvious migration process: the maximum amount of charges changes from the first PVDF sensor to the third PVDF sensor. On the other hand, the mobility of interfacial charges decreases gradually during the migration process.
KW - cable accessory
KW - interfacial charge
KW - orthogonal electric field
KW - pulsed electroacoustic method
KW - XLPE/EPDM composite dielectric
UR - https://www.scopus.com/pages/publications/85049860289
U2 - 10.1109/ICPADM.2018.8401255
DO - 10.1109/ICPADM.2018.8401255
M3 - 会议稿件
AN - SCOPUS:85049860289
T3 - Proceedings of the IEEE International Conference on Properties and Applications of Dielectric Materials
SP - 239
EP - 244
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 -