THE EXPERIMENTS ON THE EFFECT OF PEROXIDE DECOMPOSITION PRODUCTS AND ANTIOXIDANTS IN XLPE INSULATIONS ON AC TREE INITIATION

Bibliographic Information

Other Title
  • 架橋ポリエチレンの電気トリーに及ぼす架橋分解残渣と酸化防止剤の効果に関する実験
  • カキョウ ポリエチレン ノ デンキ トリー ニ オヨボス カキョウ ブンカイザンサ ト サンカ ボウシザイ ノ コウカ ニ カンスル ジッケン

Search this article

Abstract

Using XLPE specimens containing several kinds of antioxidant (AO), the effects of peroxide decomposition 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°C, 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.

Journal

Citations (8)*help

See more

References(10)*help

See more

Keywords

Details

Report a problem

Back to top