Title :
Relationships between space charge accumulation and electrical or water treeing in improved PE and XLPE by ethylene-acrylic acid copolymer
Author :
Zhimin, Dang ; Jie, Kang ; Demin, Tu
Author_Institution :
Electr. Eng. Sch., Xi´´an Jiaotong Univ., China
Abstract :
Polyethylene and cross-linked polyethylene have been improved by various contents of ethylene-acrylic acid copolymer (EAA). The electro-acoustic pulse method is used to observe the space charge distributions in samples. The treeing initiation voltage of samples, DC pre-stressed after short-circuiting, is measured. The water treeing in samples being developed under a number of AC voltages is detected. It has been found by test results that there is a certain relationship between the space charge accumulation and the 50% initiation voltage of short-circuit treeing and the water treeing with the contents of EAA. The space charge accumulation can be regarded as a measure of resistance to electrical and water treeing in samples
Keywords :
XLPE insulation; acoustoelectric effects; limited space charge accumulation; trees (electrical); XLPE; electrical treeing; electro-acoustic pulse method; ethylene-acrylic acid copolymer; polyethylene; short-circuit treeing; space charge accumulation; treeing initiation voltage; water treeing; Charge measurement; Current measurement; Electric resistance; Electric variables measurement; Electrical resistance measurement; Polyethylene; Pulsed electroacoustic methods; Space charge; Testing; Voltage;
Conference_Titel :
Properties and Applications of Dielectric Materials, 2000. Proceedings of the 6th International Conference on
Conference_Location :
Xi´an
Print_ISBN :
0-7803-5459-1
DOI :
10.1109/ICPADM.2000.875756
