XLPE中空间电荷形成的研究

2001 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.01CH37225) Pub Date : 2001-10-14 DOI:10.1109/CEIDP.2001.963583

Y. Sekii, T. Ohbayashi, T. Uchimura, T. Hukuyama, T. Maeno

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引用次数: 23

摘要

利用交联聚乙烯(XLPE)样品在不同温度下的电荷谱，研究了交联聚乙烯(XLPE)中空间电荷的形成。当温度超过180℃时，在交联试样的正极附近检测到负电荷。除去交联副产物后，即使将样品浸泡在苯乙酮中，异电荷也消失且未被检测到。同时，对含有具有吸湿作用的抗静电剂的XLPE试样进行了电荷谱分析。在这些样品中可以明显检测到异电荷，虽然去除分解产物后异电荷消失，但在苯乙酮中浸泡后，样品中再次检测到异电荷。结果表明，交联聚乙烯中少量的水分是产生异电荷的主要原因。

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A study on the space charge formation in XLPE

Space-charge formation in crosslinked polyethylene (XLPE) was examined using the charge profiles of XLPE specimens crosslinked at different temperatures. Negative charges were detected in the vicinity of the positive electrode of specimens cross-linked at temperatures exceeding 180/spl deg/C. After the crosslinking byproducts were removed, the heterocharge disappeared and remained undetected even after the specimens were soaked in acetophenone. Charge profiles were also obtained for XLPE specimens containing an antistatic agent, which has the function of absorbing moisture. The heterocharge was detected clearly in these specimens, and although the heterocharge disappeared after the decomposition products were removed, the heterocharge was detected again when the specimen was soaked in acetophenone. It is concluded that the small amount of moisture in XLPE is responsible for heterocharge creation.

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2001 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.01CH37225)

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