为对比研究植物绝缘油-纸板和矿物油-纸板体系的绝缘老化寿命，先在170℃进行加速热老化对比试验，再根据植物油变压器特有的温升情况，将植物油-纸板体系和矿物油-纸板体系分别在150℃和140℃条件下进行加速老化对比试验，并对经过不同老化试验后的纸板的外观、聚合度及SEM微观结构进行比较分析。结果表明：在170℃下经过1000 h热老化即等效20年自然老化后，矿物油中纸板结构受到严重破坏，相当于变压器寿命已到晚期，而植物油中纸板结构保持比较完整，聚合度仍在500以上，相当于变压器寿命只到中期；植物绝缘油中纸板体系在150℃条件下的热老化速度比矿物绝缘油-纸体系在140℃条件下的热老化速度慢，进一步说明植物绝缘油-纸板体系比矿物油-纸板体系的寿命更长。
To comparatively study the insulation ageing life of vegetable insulating oil-paperboard and min-eral oil-paperboard, we conducted accelerated thermal ageing experiments at 170 ℃. Then according to the temperature rise of vegetable insulating oil transformer, we conducted accelerated thermal ageing ex-periments at 150℃ for vegetable insulating oil-paperboard and at 140℃ for mineral oil-paperboard. The appearance, polymerization degree, and SEM microstructure of the paperboard after different ageing experi-ments were comparative analyzed. The results show that after the oil-paperboard system is accelerated age-ing for 1 000 h at 170 ℃, that is equivalent to 20 years natural ageing, the structure of paperboard in vegetable insulating oil is damaged severely, which indicates that the lifetime of transformer are in the late stage; while the structure of paperboard in mineral oil maintain complete, and the polymerization de-gree is still above 500, which indicate that the lifetime of transformer are in the middle stage. The accel-erated ageing rate of the vegetable insulating oil-paperboard system at 150℃ is slower than that of the mineral oil-paperboard system, which indicates that the lifetime of the vegetable insulating oil-paperboard is longer than that of the mineral oil-paperboard.
参考文献
| [1] | 吕健,詹怀宇,晋华春.电力变压器绝缘纸的性能及其绝缘老化[J].中国造纸,2008(05):54-58. |
| [2] | Emsley A M, Stevens G C . Review of Chemical Indicators of Degradation of Cellulosic Electrical Paper Insulation in Oil-filled Transformers[J].IEE Proceedings of Science,1994,141(5):324-334.,1994. |
| [3] | 操敦奎,许维宗,阮国方. 变压器运行维护与故障分析处理[M].北京:中国电力出版社,2008:10-79.,2008. |
| [4] | 陈玉放,郭元强,谢来苏 . 植物纤维有氧条件下的热稳定特性的研究[J].纤维素科学与技术,1999,7(3):13-19.,1999. |
| [5] | 杨丽君,廖瑞金,孙会刚,孙才新,李剑.油纸绝缘热老化特性及生成物的对比分析[J].中国电机工程学报,2008(22):53-58. |
| [6] | Lundgaard L E, Hansen W, Linhjell D . Aging of Oil-impreg-nated Paper in Power Transformers[J].IEEE Transactions on Power Delivery,2004,19(1):230-239.,2004. |
| [7] | 王世强,张冠军,魏建林,黄新波,陈玉峰.纸板的老化状态对其PDC特性影响的实验研究[J].中国电机工程学报,2011(34):177-183. |
| [8] | 莫瑟 H P, 达欣登 V. 变压器绝缘纸板[M]. 朱英浩,赵育文,译.沈阳:辽宁科学技术出版社,1997.,1997. |
| [9] | 印华,邱毓昌.油浸变压器用植物油[J].绝缘材料,2003(02):23-25. |
| [10] | Mc Shane C P . Relative Properties of the New Combus-tion-resist Vegetable-oil-based Dielectric Coolants for Distri-bution and Power Transformers[J].IEEE Transactions on In-dustry Applications,2001,37(4):1132-1139.,2001. |
| [11] | Badent R, Hemmer M, Schwab A J. Inhibited Rape-seed Oil as Substitute for Mineral Oils[C]//2002 Annual Report Conference on Electrical Insulation and Dielectric Phenome-na,IEEE Quintana Roo,Mexico,2002:268-271.,2002. |
| [12] | Oommen T V . Vegetable Oils for Liquid Filled Transform-ers[J].IEEE Electrical Insulation Magazine,2002,18(1):6-11.,2002. |
| [13] | 廖瑞金,梁帅伟,杨丽君,王红梅,孙才新,孙会刚.天然酯-普通纸（或热稳定纸）绝缘热老化特性[J].电工技术学报,2009(12):12-17. |
| [14] | 廖瑞金,梁帅伟,周天春,杨丽君,孙会刚.天然酯-纸绝缘热老化速度减缓及其原因分析[J].电工技术学报,2008(09):32-37,44. |
| [15] | 胡婷,吴义华,周竹君,陈江波,凡勇,章立.植物绝缘油碱炼工艺的优化[J].绝缘材料,2012(04):60-63. |
| [16] | 凡勇,周竹君,伍志荣,吴义华,陈江波,蔡胜伟,周翠娟.几种植物绝缘油的抗氧化性能研究[J].绝缘材料,2013(02):45-48. |
| [17] | 朱德恒,谈克雄. 电绝缘诊断技术[M]. 北京:中国电力出版社, 1999.,1999. |
| [18] | 毕鹏翔,张文元,秦少臻,张红云,金青.变压器固体绝缘状况的监测方法[J].高电压技术,2000(03):47-49,51. |
| [19] | 王伟,马志青,李成榕,汪鑫.纤维素老化对油纸绝缘水分平衡的影响[J].中国电机工程学报,2012(31):100-105,前插13. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%