为了评估长时间充氮无油存放的变压器质量，重点从氮气中水分对绝缘性能的影响、绝缘材料老化降解、空腔及气泡形成等方面进行分析，指出了变压器长期充氮存放可能出现的风险，同时对实际长期存放的变压器的电气性能进行了对比分析。结果表明：采取有效的保护措施后无油充氮存放对产品质量不会造成明显的影响，采取正确的处理工艺后产品质量可以得到较好的恢复，为后续变压器的存放管理提供参考。
In order to assess the quality of transformers after long-term storage without oil-immersed in ni-trogen atmosphere, the effects of moisture in nitrogen on the insulating properties and aging degradation of insulating materials and the formation of cavities and bubbles were analyzed mainly, and the possible risks of long-term storage in nitrogen atmosphere were pointed out. The electrical properties of the trans-formers after long-term storage were compared and analyzed simultaneously. The results show that long-term storage in nitrogen atmosphere would not significantly affect the quality of the transformers and the quality can recover after adopting effective protective measures, which provide a valuable refer-ence to subsequent storage management of transformers.
参考文献
| [1] | 何伟然.变压器的充氮保管[J].华东电力,1987(05):48-50. |
| [2] | DL/T 580-1995.用露点法测定变压器绝缘纸中平均含水量的方法[S]. |
| [3] | Oommen T V;赵宗平.用于变压器绝缘干燥工艺的含水量平衡曲线图[J].变压器,1985(04):26-29. |
| [4] | 刘玉仙.变压器油纸绝缘的含湿分析及其对运行安全的影响[J].变压器,2002(05):1-6. |
| [5] | 董宝骅.变压器在正常工作电压下的绝缘事故原因分析及防御措施[J].电力设备,2005(11):63-66. |
| [6] | 宋敬东,薛艳红.220 kV变压器绝缘深度受潮的现场干燥处理方法[J].电工电气,2012(11):52-55. |
| [7] | 路长柏.电力变压器绝缘技术[M].哈尔滨:哈尔滨工业大学出版社,1997:301-303. |
| [8] | 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. |
| [9] | GB 50148-2010.电气装置安装工程电力变压器、油浸电抗器、互感器施工及验收规范[S]. |
| [10] | DLT 596-2005.电力设备预防性试验规程[S]. |
| [11] | GB 50150-2006.电气装置安装工程电气设备交接试验标准[S]. |
| [12] | 王大伟.变压器静放时间对局部放电测量的影响[J].吉林电力技术,1997(04):21-22. |
| [13] | 康西元.360MVA500kV变压器在安装运行时的绝缘分析[J].变压器,1993(11):31-38. |
| [14] | 冷勇.变压器绝缘电阻和吸收比分析[J].高电压技术,2002(04):21-23. |
| [15] | 陈训耀.降低高压变压器现场安装时油中含气量的方法[J].高压电器,2005(05):397-398. |
| [16] | 李悦,李宏.利用变压器中的油纸水分平衡关系分析绝缘受潮[J].西北电力技术,2004(01):54-55. |
| [17] | 刘锐,李金忠,张书琦,汤浩.大型变压器现场加热干燥方法的研究与应用[J].中国电机工程学报,2012(01):193-198. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%