THE EXPERIMENTS ON THE EFFECT OF PEROXIDE DECOMPOSITION PRODUCTS AND ANTIOXIDANTS IN XLPE INSULATIONS ON AC TREE INITIATION
THE EXPERIMENTS ON THE EFFECT OF PEROXIDE DECOMPOSITION PRODUCTS AND ANTIOXIDANTS IN XLPE INSULATIONS ON AC TREE INITIATION
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XLPE绝缘中过氧化物分解产物和抗氧化剂对AC树引发影响的实验
DOI：
10.1541/ieejfms1990.119.6_848
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发表时间：
1999
影响因子：
--
通讯作者：
Y. Sekii
中科院分区：
文献类型：
--
作者：
K. Hirota;T. Okada;K. Maruta;Y. Sekii
研究了交联聚乙烯（XLPE）绝缘层在果树萌发过程中的产物（PDP）和抗氧化剂（AO）。PDP和部分种类的AO被证实具有抑制树木的作用。还研究了高温对树木的抑制作用。含PDP的XLPE的起始电压随温度的升高而降低。这种减少被认为是由于PDP在高温下蒸发造成的。添加酚醛AO或UV吸收剂的XLPE的起始电压也随温度的升高而降低。含PDP和UV吸收剂的XLPE在80•Ž时起始电压下降幅度不大，而不含PDP的XLPE起始电压下降幅度较大。为了研究PDP对树形抑制的机制，利用FTIR显微镜测量了样品中针电极附近PDP的含量。结果表明：随着离针尖距离的增加，苯乙酮和茴香醇的含量降低，这可能支持针尖电场松弛导致树形抑制的机制。研究了AO对树木抑制的机理。
products (PDP) and antioxidant (AO) in XLPE insulation on ac tree initiation was investigated. The PDP and some kinds AO were confirmed to have the effect of tree suppression. The tree suppression at elevated temperature was also studied. The tree inception voltage of XLPE containing the PDP decreases with the increase of temperature. This decrease is considered to be caused by the evaporation of the PDP at high temperature. The tree inception voltage of XLPE with a phenolic AO or a UV absorber also decreases with the increase of temperature. The fall down of tree inception voltage of XLPE containing both PDP and UV absorber was not so great even at 80•Ž, while the drop of the inception voltage of XLPE without the PDP was significant. To examine the mechanism of tree suppression due to the PDP, PDP content in the vicinity of the needle electrode in the specimen was measured using FTIR microscope. The result demonstrates that the. content of acetophenone and cumylalcohol decreases with the increase of the distance from the needle tip, which could support the mechanism of tree suppression caused by the electric field relaxation at the needle tip. The mechanism of tree suppression due to the AO was also examined.