电工技术学报  2022, Vol. 37 Issue (11): 2733-2742    DOI: 10.19595/j.cnki.1000-6753.tces.201703
高电压与绝缘 |
10kV高压开关柜安全性能的提升方法
董盼1, 杨鑫1, 贾鹏飞2, 雷佳成1, 刘瑶3
1.长沙理工大学电气与信息工程学院 长沙 410114;
2.中国电力科学研究院 北京 100192;
3.国网北京市电力公司 北京 100031
Improve Method the Safety Performance of 10kV High Voltage Switchgear
Dong Pan1, Yang Xin1, Jia Pengfei2, Lei Jiacheng1, Liu Yao3
1. School of Electrical & Information Engineering Changsha University of Science and Technology Changsha 410114 China;
2. China Electric Power Research Institute Beijing 100192 China;
3. State Grid Beijing Electric Power Company Beijing 100031 China
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摘要 针对10kV高压开关柜内部短路电弧引发的爆炸造成二次伤害的问题,该文从开关柜柜体和柜门安全裕度比较的角度出发,提出提高开关柜安全裕度的计算方法和设计建议。采用热源等效和分舱建模的方式,利用多物理场耦合的有限元仿真,对开关柜在短路电弧冲击作用下的安全裕度进行仿真计算。以电缆室为例,得出电缆室柜体和柜门的安全裕度值(分别为51%和2%),指出影响开关柜安全裕度的关键在于提升柜门的安全裕度值。提出在柜门内侧覆盖陶瓷化硅橡胶高分子复合耐火材料的方法来提升柜门的安全裕度,在电缆室柜门内侧压强较大区域覆盖3mm厚的陶瓷化硅橡胶高分子复合耐火材料,可将柜门的安全裕度提升至70%,进而提升开关柜的整体安全性能。与传统提升方法相比,更具针对性,促进设备向轻质化发展,为10kV开关柜安全等级提升提供了新的解决思路与方法。
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董盼
杨鑫
贾鹏飞
雷佳成
刘瑶
关键词 10kV开关柜短路电弧安全设计高分子材料多物理场耦合    
Abstract:Aiming at the secondary damage of the explosion caused by the internal short-circuit arc of the 10kV high-voltage switchgear, the paper proposed calculation methods and design suggestions to improve the safety margin of the switchgear from the perspective of comparing the safety margin of the cabinet box and cabinet door. The heat source equivalent and sub-cabin modeling methods were adopted, and the finite element simulation calculation method of multi-physics coupling was used to simulate the safety margin of the switchgear under the impact of short-circuit arc. Taking the cable room as an example, the safety margin values (51% and 2%, respectively) of the cable room cabinet and the door were obtained. It is pointed out that the key to the safety margin of the switchgear is to increase the safety margin value of the cabinet door. A method of covering the inner side of the cabinet door with ceramic silicone rubber polymer composite refractory material is proposed to improve the safety margin of the cabinet door, and a 3mm thick ceramic silicone rubber polymer composite refractory material is covered in the area of high pressure inside the cabinet door. The safety margin of the cabinet door can be increased to 70%, and the overall safety performance of the switch cabinet is improved. Compared with traditional upgrading methods, it is more targeted, promotes the development of lightweight equipment, and provides new solutions and methods for upgrading the safety level of 10kV switchgear.
Key words10kV switchgear    short circuit arc    safe design    polymer materials    multi-physics coupling   
收稿日期: 2020-12-28     
PACS: TM591  
基金资助:国家自然科学基金(52177015)和广东电网有限责任公司科技项目(GDKJXM20161905)资助
通讯作者: 杨 鑫 男,1983年生,副教授,硕士生导师,研究方向为电力系统过电压及其防护和低温高压绝缘技术。E-mail:yan_19830713@163.com   
作者简介: 董 盼 男,1995年生,硕士研究生,研究方向为高电压绝缘技术。E-mail:1397591127@qq.com
引用本文:   
董盼, 杨鑫, 贾鹏飞, 雷佳成, 刘瑶. 10kV高压开关柜安全性能的提升方法[J]. 电工技术学报, 2022, 37(11): 2733-2742. Dong Pan, Yang Xin, Jia Pengfei, Lei Jiacheng, Liu Yao. Improve Method the Safety Performance of 10kV High Voltage Switchgear. Transactions of China Electrotechnical Society, 2022, 37(11): 2733-2742.
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https://dgjsxb.ces-transaction.com/CN/10.19595/j.cnki.1000-6753.tces.201703          https://dgjsxb.ces-transaction.com/CN/Y2022/V37/I11/2733