汽车点火线圈用环氧胶的电老化规律研究
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摘要
通过电气绝缘强度测试研究了5 000,8 000,12 000,15 000 V这4种不同高压电场下,双酚A型环氧树脂WRS618A体系的电老化过程。结果表明,随电老化试验电场强度的增加,试样的电气绝缘强度呈下降趋势。通过对测试结果的分析拟合,得出树脂材料的老化寿命模型,并据此预测出WRS618A体系在10 000 V高压电场条件下的使用寿命约为3.7 a。
The electrical aging process of bisphenol A epoxy resin WRS618 A system under four different high voltage electric fields of 5 000,8 000,12 000 and 15 000 V was studied by electrical insulation strength test. The results showed that the electrical insulation strength of the sample was decreased with the increasing of electric field strength in the electric aging test. Through the analysis and fitting of the test results,the aging life model of the resin material was obtained,and the service life of the WRS618 A system under the high-voltage electric field of 10 000 V was predicted to be about 3. 7 a.
The electrical aging process of bisphenol A epoxy resin WRS618 A system under four different high voltage electric fields of 5 000,8 000,12 000 and 15 000 V was studied by electrical insulation strength test. The results showed that the electrical insulation strength of the sample was decreased with the increasing of electric field strength in the electric aging test. Through the analysis and fitting of the test results,the aging life model of the resin material was obtained,and the service life of the WRS618 A system under the high-voltage electric field of 10 000 V was predicted to be about 3. 7 a.
引文
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[2]金军,赵全振.汽车点火线圈用环氧灌封料的研制[J].粘接,2014,36(1):68-71.
[3]芦竹茂.环氧树脂绝缘材料中的电树枝研究[D].北京:华北电力大学,2012:1-58.
[4]saha TapanK. Re View of modem diagnostic techniques for assessing insulation condition in aged transformers[J]. IEEE Transactions on Dielectrics and Electrical Insulation,2003,10(5):903-917
[5]吴旭涛,李秀广,李军浩,等.交直流复合电压下油纸绝缘沿面局部放电特性研究[J].高压电器,2016,52(4):128-131.
[6]刘荣,李继胜,田维坚,等. XLPE电力电缆典型缺陷局部放电测量与分析[J].高压电器,2015,51(2):44-50.
[7]常文治,阎春雨,李成榕,等.硅橡胶/胶联聚乙烯界面金属颗粒沿面放电严重程度的评估[J].电工技术学报,2015,30(24):245-254.
[8]李字明,徐康泰,孙佑飞,等.直流斜面法中试验电压对硅橡胶材料蚀损程度的影响[J].高压电器,2015,51(12):43-47.
[9]刘涛,韩帅,李庆民,等.频变电应力下高频电力变压器绝缘沿面放电形态及发展过程[J].电工技术学报,2016,31(19):199-207.
[10]袁端磊,王海燕,杨芳,等.固体绝缘件长时间正常工作条件下电老化寿命评估方法研究[J].高压电器,2017,53(4):31-35.