中国电机工程学报2015，Vol.35Issue(11)：2903-2910,后插31,9.DOI:10.13334/j.0258-8013.pcsee.2015.11.031
交联副产物对交联聚乙烯中空间电荷行为的影响
The Influence of Cross-linked By-products on Space Charge Behaviour in XLPE
摘要
Abstract
To study the relationship between cross-linked by-products of cross-linked polyethylene (XLPE) and space charge characteristics under high voltage direct current (HVDC), three kinds of XLPE samples were degassed for various hours (0h, 24h, 72h). Space charge distribution in these samples was detected after DC was applied. The measurement was based on pulsed electro-acoustic measurement (PEA) principle. The remaining cross-linked by-products in the samples were detected by gas chromatograph-mass spectrometer (GC-MS). It shows that with the increase of degassing time, the kinds of cross-linked by-products unchanged, but the amount was significantly reduced. Under HVDC, samples not degassed accumulated large amounts of heterocharges near two electrodes. Besides, charge amount increased significantly as the electric field was strengthened. The internal space charge accumulation in samples degassed was significantly reduced. In low electric field, there were only few homocharges near two electrodes. As the electric field increased, heterocharges gradually became dominant. It indicates that, under DC electric field, heterocharges mainly come from the dissociation of cross-linked by-products in XLPE. And the higher the electric field is, the more ionic charges accumulate. Degassing treatment can effectively reduce the amount of cross-linked by-products in XLPE, so it can improve the space charge characteristics.关键词
空间电荷/交联副产物/交联聚乙烯/脱气处理Key words
space charge/cross-linked by-products/cross-linked polyethylene (XLPE)/degassing分类
信息技术与安全科学引用本文复制引用
钟琼霞,兰莉,吴建东,尹毅..交联副产物对交联聚乙烯中空间电荷行为的影响[J].中国电机工程学报,2015,35(11):2903-2910,后插31,9.基金项目
国家高技术研究发展计划(2012AA030310) （2012AA030310）
国家自然科学基金项目(51277118). Project Supported by National High Technology Research and Development Program of China (2012AA030310) （51277118）
National Natural Science Foundation of China (51277118). （51277118）
