高压电器2026，Vol.62Issue(4)：1-16,16.DOI:10.13296/j.1001⁃1609.hva.2026.04.001
换流变压器油纸绝缘气泡动态行为与高能电弧演化机理及其防治技术综述
Review on the Dynamic Bubble Behavior in Oil⁃paper Insulation of Converter Transformer and the Evolution Mechanism of High⁃energy Arcs and Mitigation Techniques
摘要
Abstract
Converter transformer is a key equipment in the AC/DC transmission link and its operation stability and safety directly affects both reliability and stability level of the entire power system.In recent years,the deflagration accidents in converter transformers caused by high⁃energy arcs have shown an increasing trend,posing an major threat to the operational safety of power grids.Due to the significant impact of bubbles in oil paper insulation on its insulation performance under the influence of electric and temperature fields,and their crucial role in the formation process of high⁃energy arcs,it is of great importance to investigate the dynamic behavior of bubbles in oil paper in⁃sulation of converter transformers,the evolution mechanism of high⁃energy arcs,and their prevention and their cor⁃responding mitigation techniques.Therefore,the generation mechanism and complex dynamic behavior of oil paper insulation bubbles in converter transformers is systematically reviewed,with a focus on summarizing the formation mechanisms of thermally induced and electrically induced bubbles under different operating conditions,and the coupling mechanism between bubble cluster explosion and partial discharge evolution is introduced further.By sum⁃marizing the division of discharge stages and warning methods,the current methods for identifying high⁃energy arc precursors and their existing problems are summarized.Finally,typical discharge mitigatino technique paths are summarized from the perspectives of material modification and oil circuit structure control,providing ideas for early warning and prevention of arc precursors in converter transformers and ensuring the safe and reliable operation of AC/DC transmission systems.关键词
换流变压器/油纸绝缘/气泡/高能电弧Key words
converter transformer/oil⁃paper insulation/gas bubble/high⁃energy arc引用本文复制引用
刘洪顺,隋宜臻,赵茹雪,武宏斌,任富强,李清泉,李元..换流变压器油纸绝缘气泡动态行为与高能电弧演化机理及其防治技术综述[J].高压电器,2026,62(4):1-16,16.基金项目
国家自然科学基金(52577171) （52577171）
电工材料电气绝缘全国重点实验室项目(EIPE25206).Project Supported by National Natural Science Foundation of China(52577171),State Key Laboratory of Electrical Insulation and Power Equipment(EIPE25206). （EIPE25206）
