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发明公开
CN104714130A 干式变压器环氧树脂热氧老化试验模型及制作方法和应用 无效 - 驳回

干式变压器环氧树脂热氧老化试验模型及制作方法和应用
摘要：
本发明涉及一种干式变压器环氧树脂的热氧老化试验模型及其制作方法和应用。该干式变压器环氧树脂热氧老化试验模型，包括实心铜棒、环氧树脂绝缘层以及绕组层，该环氧树脂绝缘层紧密包裹该实心铜棒，该绕组层由紧密缠绕在该环氧树脂绝缘层外表面的双绞线构成。采用双绞线缠绕的方式制作的上述试验模型与实际干式变压器的绕组类似，相较之传统的单一使用环氧树脂材料制作成片状试验模型更加真实，通过对该缠绕有双绞线的实心铜棒进行环氧树脂绝缘材料的浇注，制作出的试验模型能更加真实的反应环氧树脂绝缘材料在耐热及耐压下的老化情况，从而热氧老化试验更能反映真实的热氧老化情况，更加准确。
摘要（英）：

The invention relates to a dry type transformer epoxy resin thermo-oxidative aging test model and a manufacturing method and application thereof. The dry type transformer epoxy resin thermo-oxidative aging test model comprises a solid copper bar, an epoxy resin insulation layer and a winding layer, wherein the solid copper bar is tightly wrapped by the epoxy resin insulation layer, and the winding layer is formed by a twisted pair tightly wound on the outer surface of the epoxy resin insulation layer. The test model manufactured in the twisted pair winding mode is similar to a winding of a real dry type transformer, the test model is more real than a traditional sheet test model made of single epoxy resin materials, the solid copper bar wound by the twisted pair is used for pouring epoxy resin insulation materials, the manufactured test model can more really reflect the aging condition of the epoxy resin insulation materials under heat and voltage resistance conditions, and thus thermo-oxidative aging tests can better reflect the real thermo-oxidative aging conditions and be more accurate.

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