摘要
针对高海拔、频繁发生温湿风、易出现冷凝现象及污秽地区等环境使用要求,笔者开发出一种12 kV小型化开关柜。该开关柜设计基于KYN28A-12型开关柜结构,依据IEC、GB等有关标准,对断路器室、母线室、电缆室等主要功能单元及内部零部件进行改进设计或创新,经过多次摸底试验,解决其中的绝缘、温升、内部燃弧等关键问题。新设计的开关柜柜宽650 mm,相对地、相间及断口间雷电冲击耐压达95 kV,在西安高压电器研究院通过型式试验验证(包括内部燃弧),具有体积小、绝缘水平高、接地关合及抗内部燃弧能力强等特点。设计中采取的提高绝缘、增强内部燃弧能力等措施,为今后高海拔地区中压开关设备的设计提供参考。
A 12 kV miniaturization switchgear is developed, which is used in the regions with high altitude, fre- quent humid air, easily to appear condensation phenomenon and impurity. Based on the structure of KYN28A- 12 type switchgear, according to the IEC, GB and other relevant standards, the main function units and internal compo- nents of the compartment （such as circuit-breaker, busbar, cable etc.） are improved or innovated. The key problems of insulation, temperature rise, internal arc etc, are resolved after a lot of tests. The new designed switchgear can realize the 650 mm switchgear width and the lightning impulse withstand voltage of phase-to-earth, phase-to-phase and the isolating distance reaches 95 kV, and have been passed the verification by the type testing in the XIHARI （includ- ing the arc test）. The switchgear has the characteristics of small volume, high insulation level, strong capability of earthing switch making and breaking, withstanding internal arc etc. The measures to improve the insulation and en- hance the internal arc capacity will supply the reference for medium voltage switchgear design in high altitude areas.
作者
孔祥冲
李政军
刘立东
张世晓
彭凤娟
KONG Xiangchong;LI Zhengjun;LIU Lidong;ZHANG Shixiao;PENG Fengjuan(Yihe Electric Group Co., Ltd., Shandong Qingdao 266500, Chin)
出处
《高压电器》
CAS
CSCD
北大核心
2018年第4期221-226,共6页
High Voltage Apparatus
关键词
开关柜
小型化
绝缘
内部燃弧
试验验证
switchgear
miniaturization
insulation
internal arc
verification
