摘要
本文介绍了一例主变局部进水受潮介损大、经吸附循环再生合格的案例。采用高效吸附剂加上真空干燥的方法，成功地将主变绝缘提高到新变压器投运前的水平. 吸附热油循环加上真空干燥的方法简单易行，适用于进水受潮及油质劣化的变压器恢复绝缘水平，能加快脱水和除杂质速度，缩短提升绝缘所需时间，保证变压器经济可靠运行。
关键词： 变压器油；吸附剂；绝缘
Abstract
This paper presents a case study of a main transformer with excessive dielectric loss caused by partial water ingress and dampness, which was successfully restored to the qualified standard through adsorption cycle regeneration. By adopting the method of combining high-efficiency adsorbent with vacuum drying, the main insulation performance of the main transformer was effectively improved to the level of a new transformer before commissioning. The integrated technology of hot oil circulation adsorption and vacuum drying is simple and feasible, which is suitable for restoring the insulation level of transformers suffering from water dampness and oil deterioration. This method can accelerate the speed of water removal and impurity elimination, shorten the time required for insulation improvement, and ensure the economical and reliable operation of transformers.
Key words： Transformer oil; Adsorbent; Main insulation
参考文献 References
[1] 陈钠, 徐浩, 丁嘉乐, 等. 变压器绝缘电阻异常原因排查及处理[J]. 电气技术, 2024, (9): 45-50.
[2] 黄琬祎,任乔林,黄文涛,汤迎春,黄旦莉,任贝婷,蔡世腾.壳聚糖-膨润土吸附剂的制备及其对变压器废油的再生性能[J]. 石油炼制与化工,2023,54 (11).
[3] IET. 变压器高负荷波动期间的水分动力学:油/纸板绝缘内的局部积累与界面迁移[J]. IET发电、输电与配电, 2024, 18(12): 2890-2901.
[4] QIAN Y H, LI Z, ZHAO Y H, et al. Infrared spectroscopy for ageing assessment of insulating oils via dielectric loss factor and interfacial tension[J]. Open Physics, 2023, 21: 20220260.
https://doi.org/10.1515/phys-2022-0260
[5] 任乔林,张逸,张伟,蔡萱,吴优,李钟灵. 变压器废油处置案例分析及应用 [J]. 湖南电力,2023,43(4):114-117.
https://doi:10.3969/j.issn.1008-0198.2023.04.017
[6] 窦鹏,朱紫妍,黄燕,等. 铁改性活性炭的制备及其对劣化变压器油再生试验的研究[J]. 绝缘材料,2025,58 (10): 146-152.
https://doi.org/10.16790/j.cnki.1009-9239.im.2025.10.017
[7] 王建国, 刘敏, 张鹏. 吸附剂辅助真空干燥处理变压器水分及降温增效研究[J]. 电力建设, 2025, 46(8): 78-85.
[8] 张军, 李丽, 赵伟. 变压器绝缘吸收比与极化指数检测规范及特性研究[J]. 高压电器, 2024, 60(11): 102-108.