高压电器2026，Vol.62Issue(3)：22-28,7.DOI:10.13296/j.1001-1609.hva.2026.03.004
40.5 kV环保型开关设备大电流温升特性研究
Research on High Current Temperature Rise Characteristics of 40.5 kV Environmentally Friendly Switchgear
刘顺凯 1马平 1辛昭昭 1陈志彬 1李嘉龙 1曹阳娜 1贺博2
作者信息
- 1. 西安高压电器研究院股份有限公司,西安 710077
- 2. 西安交通大学,西安 710049
- 折叠
摘要
Abstract
Environmentally friendly switchgear using clean air as the insulation medium meets the requirements of green environmental protection concepts and the"dual carbon"target.Dead tank type high-pressure products are more likely to solve both insulation and heat dissipation problems and,however,their high current heating and tem-perature rise problems are still prominent.In response to the temperature rise problem encountered in the develop-ment of 40.5 kV/2500 A high current environmentally friendly switchgear at 1.1 times of the rated current,a three position switch and busbar prototype model are constructed in this paper,the electromagnetic-thermal-flow multi physics coupling simulation method is adopted to study its temperature rise characteristics and the simulation result is verified through testing.The structural optimization of the original prototype model is performed and the tempera-ture rise before and after the structural optimization is simulated and compared.Under natural cooling conditions at 2 750 A,the maximum temperature rise of the original structure is 66.2 K,and that of the new structure is 52.6 K.After optimization,the temperature rise is decreased by 13.6 K,significantly improving the overall design margin of the product.The whole switchgear prototype,including the three position switch,busbar module,and circuit break-er module,successfully passed the temperature rise test at 2750 A under natural cooling conditions.关键词
洁净空气绝缘开关/多物理场耦合/温升特性/结构优化Key words
clean air insulated switch/multi-physics-field coupling/temperature rise characteristics/structural optimization引用本文复制引用
刘顺凯,马平,辛昭昭,陈志彬,李嘉龙,曹阳娜,贺博..40.5 kV环保型开关设备大电流温升特性研究[J].高压电器,2026,62(3):22-28,7.
