Influence of Temperature on Electrical Ageing Process of Oil-pressboard Insulation Under Stressing of Step-voltage

LIN Chunyao; OU Xiaobo; WEI Xinlao; NIE Hongyan; LIN Lin; CHI Minghe

doi:10.13296/j.1001-1609.hva.2016.10.033

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Influence of Temperature on Electrical Ageing Process of Oil-pressboard Insulation Under Stressing of Step-voltage

更新时间：2025-04-26

- Influence of Temperature on Electrical Ageing Process of Oil-pressboard Insulation Under Stressing of Step-voltage
- High VoltageApparatus Vol. 52, Issue 10, Pages: 194-200(2016)
- 作者机构：
  
  1. 广东电网有限责任公司电力科学研究院
  2. 哈尔滨理工大学科技发展总公司
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2016.10.033
  CLC： TM855
- Published：2016
- 稿件说明：
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[1]林春耀,欧小波,魏新劳,聂洪岩,林林,池明赫.温度对步进电压下油纸绝缘电老化的影响[J].高压电器,2016,52(10):194-200.

LIN Chunyao, OU Xiaobo, WEI Xinlao, et al. Influence of Temperature on Electrical Ageing Process of Oil-pressboard Insulation Under Stressing of Step-voltage[J]. High voltageapparatus, 2016, 52(10): 194-200.
[1]林春耀,欧小波,魏新劳,聂洪岩,林林,池明赫.温度对步进电压下油纸绝缘电老化的影响[J].高压电器,2016,52(10):194-200. DOI： 10.13296/j.1001-1609.hva.2016.10.033.

LIN Chunyao, OU Xiaobo, WEI Xinlao, et al. Influence of Temperature on Electrical Ageing Process of Oil-pressboard Insulation Under Stressing of Step-voltage[J]. High voltageapparatus, 2016, 52(10): 194-200. DOI： 10.13296/j.1001-1609.hva.2016.10.033.

摘要

为了研究温度对变压器匝间油纸绝缘电老化过程的影响

文中设计了变压器匝间油纸绝缘模型线圈及试验系统

用步进升压法进行了模型线圈在常温22℃及运行温度80℃下的电老化试验。采用一种基于极大似然思想的数据处理方法

求取了油纸绝缘反幂模型中的常数A及电压寿命指数N

并用恒定电压法验证了所得反幂模型的正确性。结果表明:步进电压法可以用于变压器匝间油纸绝缘的电老化研究;与常温下相比

在电压低于某一阈值时运行温度下变压器匝间油纸绝缘模型线圈的电老化速度较慢

寿命较长

在电压高于该阈值时恰好相反;电老化不是变压器绝缘材料老化的最主要因素。

Abstract

In order to investigate the influence of temperature on electrical ageing process of transformer turn-to-turn oil-pressboard insulation

the model coil and test system of transformer turn-to-turn oil-pressboard insulation are set up. Using step-voltage into the booster method the electrical ageing test of model coil is carried on at normal temperature（22 ℃） and operating temperature（80 ℃） respectively. Based on the data processing method of maximum likeli hood

the constant A and voltage endurance coefficient N in oil-pressboard insulation inverse power model are obtained. The validity of inverse power model is proved with constant voltage method. The result shows that stepvoltage can be used to study the electrical ageing of transformer turn-to-turn oil-pressboard insulation. Compared with normal temperature

the speed of the electrical ageing of transformer turn-to-turn oil-pressboard insulation coil is slower when the voltage below a certain threshold

the life of the coil is long. It is just the opposite when voltage is higher than the threshold. Electrical aging is not the most important factor of transformer insulation aging.

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