[1]孙利雄,赵莉华,赵 虎.不同绝缘气体下中压开关柜温升特性研究[J].机械与电子,2022,(02):39-44.
　SUN Lixiong,ZHAO Lihua,ZHAO Hu.Study on the Temperature Rise Characteristics of Medium-voltage Switchgear with Different Insulating Gas[J].Machinery & Electronics,2022,(02):39-44.
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不同绝缘气体下中压开关柜温升特性研究()
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机械与电子[ISSN:1001-2257/CN:52-1052/TH]

卷:
期数:
2022年02期
页码:
39-44
栏目:
机电一体化技术
出版日期:
2022-02-22

文章信息/Info

Title:
Study on the Temperature Rise Characteristics of Medium-voltage Switchgear with Different Insulating Gas
文章编号:
1001-2257 ( 2022 ) 02-0039-06
作者:
孙利雄 1 ; 赵莉华 2 ; 赵 虎 3
1. 云南电网有限责任公司保山供电局,云南 保山 678000 ; 2. 四川大学电气工程学院,四川 成都 610065 ;3. 西北工业大学自动化学院,陕西 西安 710072
Author(s):
SUN Lixiong1 ;  ZHAO Lihua2 ;  ZHAO Hu3
(1.Baoshan Power Supply Bureau of Yunnan Power Grid Co. , Ltd. , Baoshan 678000 , China ; 2.School of Electrical Engineering , Sichuan University , Chengdu 610065 , China ; 3.School of Automation , Northwestern Polytechnical University , Xi ’an 710072 , China
关键词:
流场; 温度场; 干燥空气; SF6 ;  N2 ; 多物理场仿真
Keywords:
flow filed ;  temperature field ;  dry air ;  SF6 ;  N2 ;  multi-physics simulation
分类号:
TM591
文献标志码:
A
摘要:
为探究干燥空气和 N2 从温升角度替代 SF6 气体的可能性,针对 KYN28-12 型中压开关柜,通过有限元分析法,构建三维温度场 流场的耦合模型,并在 3 种绝缘气体下,研究中压开关柜温升特性。研究结果表明,在 3 种绝缘气体下,具有相似的温度场分布,采用干燥空气和 N2 开关柜的温升要高于 SF6 气体,高出约 5~9 ℃ ; 3 种气体中流场分布规律也基本一致,但 SF6 气体流速较慢,最高 0.12 m / s ,干燥空气和 N2?的流速类似,最高流速 0.16 m / s 。研究结果认为从温升方面考虑,满足绝缘条件下,干燥空气和 N2 替代 SF6 可行,但需要注意较 SF6 更高的温升,流场分布特性可为干燥空气和 N2 开关柜降低温升研究提供一定的理论依据。
Abstract:
To explore the possibility of replacing SF6?gas with dry air and N2?from the perspective of temperature rise , the coupling model of three-dimensional temperature field flow ( field coupling ) was estublished by the finite element analysis for KYN28-12 medium voltage switchgear.And the temperature rise characteristics of medium voltage switchgear under three kinds of insulating gases were studied , the results show that the temperature distribution with three insulating gases was similar.With using dry air and N2 , the temperature rise of switchgear is higher than thta of SF6?gas about 5~9 ℃.The flow field distribution in the three gases is almost the same , but the flow velocity of SF6?gas is slow , of which the highest flow velocity is 0.12 m / s.The flow velocity of dry air and N2?is similar , with the highest flow velocity of 0.16 m / s.The result shows that , under insulation condition , it is feasible for dry air and N2?to take place of SF6?in terms of temperature rise.However , it is neccessray to pay attention to the higher temperature rise than SF6 .And the distribution characteristics of flow field can provide a theoretical basis for the study on the reduction of temperature rise of dry air and N2?switchgear.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期: 2021-09-03
作者简介:孙利雄 ( 1980- ),男,云南保山人,学士,高级工程师,高级技师,研究方向为高压绝缘技术的应用和研究;赵莉华 ( 1968- ),女,四川绵阳人,硕士,副教授,研究方向为电气设备状态监测及评估;赵 虎 ( 1986- ),男,陕西延安人,博士,副教授,研究方向为高电压及环保电力设备技术研究。
更新日期/Last Update: 2022-03-03